BA313600 N922 EX-en001 1119...An ignition hazard assessment in accordance with standards DIN EN ISO 80079-36 and DIN EN ISO 80079-37 was performed for the pumps. The protective goals

N922 EXTRANSLATION OF ORIGINAL OPERATION ANDINSTALLATION INSTRUCTIONENGLISH

KNF 313600 04/20 EN-US

ATEX

Notice!Before operating the pump and the accessories, read the operating and installation instructions and observethe safety notices!

DIAPHRAGM PUMP

Index1 About this document ......................................................... 32 Use ................................................................................... 53 Safety.............................................................................. 114 Technical data ................................................................ 135 Design and function ........................................................ 156 Transport ........................................................................ 167 Installation and connection ............................................. 178 Operation ........................................................................ 279 Servicing ......................................................................... 3110 Troubleshooting .............................................................. 3811 Spare parts and accessories .......................................... 4112 Returns ........................................................................... 4313 Appendix......................................................................... 44

KNF Neuberger GmbHAlter Weg 379112 FreiburgGermanyTel. +49 (0)7664/5909-0Fax. +49 (0)7664/5909-99

www.knf.com

Diaphragm pump N922 EX About this document

Translation of Original Operation and Installation Instruction, english, KNF 313600 04/20 3

1 About this document

1.1 Using the operating and installation instructionsThe operating and installation instructions are part of the pump.

à In the event of uncertainties with regard to the content of the operatingand installation instructions, please contact the manufacturer (contactdata: see www.knf.com). Please have the type designation and serialnumber of the pump ready.

à Read the operating and installation instructions before you commissionthe pump.

à Give the operating and installation instructions to the next owner.

à Keep the operating and installation instructions within reach at alltimes.

Project pumps For customer-specific project pumps (pump models that begin with "PJ" or"PM"), there may be deviations from the operating and installation instruc-tions.

à For project pumps, also observe the agreed specifications.Motor The operating and installation instructions apply for pumps without motor.

à Also observe the operating instructions for the motor in the appendix.

1.2 Symbols and markingsWarning notice

WARNING

A notice that warns you of danger is located here.Possible consequences of a failure to observe thewarning notice are specified here. The signalword, e.g., warning, indicates the danger level.

à Measures for avoiding the danger and itsconsequences are specified here.

Danger levels

Signal word Meaning Consequences if notobserved

DANGER warns of immediatedanger

Death or serious injuryor serious damage willresult.

WARNING warns of possible dan-ger

Death or serious injuryor serious damage arepossible.

CAUTION warns of a possiblydangerous situation

Minor injuries or dam-age are possible.

Tab. 1

http://www.knf.com

About this document Diaphragm pump N922 EX

4 Translation of Original Operation and Installation Instruction, english, KNF 313600 04/20

Explanations of pictograms

Pictogram MeaningWarning of hand injuries through crushing

Warning of hot surface

Warning of electrical voltage

Warning of explosive materials

Observe the operating instructions

Tab. 3

Other notices and symbolsà An activity to be carried out is specified here (a step).1. The first step of an activity to be carried out is specified here.

Follow other sequentially numbered steps.

This symbol indicates important information.

Diaphragm pump N922 EX Use


2 Use

2.1 Proper useThe pumps are intended exclusively for transferring gases and vapors.

Responsibility of the ownerOperating parameters and

conditionsOnly install and operate the pumps in accordance with the operating pa-rameters and conditions described in Chapter 4 Technical data and Chap-ter 2.3 Use in potentially explosive areas.Only pumps that are fully assembled and in the condition as delivered maybe operated.Make sure that the installation location is dry and that the pump is pro-tected against rain, splash, gushing and drip water as well as from othercontaminants.The pump is suitable for transferring potentially explosive atmospheresand for operation in potentially explosive atmospheres.The tightness of the connections between the pipes of the application andthe pump (or the connection of the pump) is to be checked at regular inter-vals. Leaky connections carry the risk of releasing dangerous gases andvapors from the pump system.

Requirements for the transferredmedium

Before transferring a medium, check whether the medium can be trans-ferred danger-free in the specific application.Before using a medium, check the compatibility of the media-contactingcomponents (see 4 Technical data) with the medium.Risk of dangerous gas mixtures during pump operation if diaphragmbreaks: Depending on the medium being transferred, breakage of the di-aphragm can result in a dangerous mixture if the medium mixes with theair in the compressor housing or the surroundings.Make certain that no risk of explosion arises even in extreme operating sit-uations (temperature, pressure) and in the event of system breakdowns.Only transfer gases that remain stable under the pressures and tempera-tures that arise in the pump.

2.2 Improper useThe pumps are not suitable for use below ground.The pumps are not suitable for transferring:

§ Dusts

§ Liquids

§ Aerosols

§ Biological and microbiological substances

§ Explosives

§ Fibers

§ FoodPumps that can produce both vacuum as well as overpressure may not beused to simultaneously produce vacuum and overpressure.This function can be made possible on a project basis upon consultationwith KNF Customer Service.No overpressure may be applied to the suction side of the pump.This function can be made possible on a project basis upon consultationwith KNF Customer Service.

Use Diaphragm pump N922 EX


2.3 Use in potentially explosive areasIn potentially explosive areas (zones), only operate pumps of the appropri-ate device category and temperature class.The pumps have the following explosion protection designation:

Designation DescriptionSymbol for explosion-proof pumps

II Device group (See Chapter 2.4.1 Device groups)2/2G Device category (See Chapter 2.4.2 Device cate-

gories for gas)Ex Symbol indicates that the device complies with

one or more ignition protection typesH Symbol for ignition protection type (See Chapter

2.4.5 Ignition protection type)II B + H2 Explosion groups (see Chapter 2.4.3 Explosion

groups)T3 Temperature class (see Chapter 2.4.4 Tempera-

ture classes)Gb Equipment protection level (See Chapter 2.4.6

Equipment protection level for gas)Special operating conditions (See Chapter 2.4.7Special operating conditions)

Tab. 5

An ignition hazard assessment in accordance with standards DIN EN ISO80079-36 and DIN EN ISO 80079-37 was performed for the pumps. Theprotective goals were reached by applying ignition protection type con-structional safety "c".The explosion protection designation can also be found at the following lo-cation:

§ Type plate of the pumpMotor The pump motor must have at least the same explosion protection as the

pump.



2.4 Explanations of the explosion protection designation

2.4.1 Device groupsDevice group I Device group I applies for devices that are used in underground plants of

mines as well as their underground systems that could be endangered bymethane and/or combustible dusts.

Device group II Device group II applies for devices that are used in other areas that couldbe endangered by an explosive atmosphere.

2.4.2 Device categories for gasThe device category describes the frequency and the duration of the oc-currence of explosive atmospheres during operation.

Device cat-egory

Description

1G Devices of this category are designed for use in areas inwhich an explosive atmosphere consisting of a mixture of airand gases, vapors or mists is present constantly or for longperiods of time or often.

1D Devices of this category are designed for use in areas inwhich an explosive atmosphere consisting of a dust/air mix-ture is present constantly or for long periods of time or often.

2G Devices of this category are designed for use in areas inwhich it is to be expected that an explosive atmosphere con-sisting of gases, vapors or mists forms occasionally.

2/2G Devices that extract from zone 1 and are designed for use inareas in which it is to be expected that an explosive atmos-phere consisting of gases, vapors or mists forms occasion-ally.

2/-G Devices that extract from zone 1 but are not designed for in-stallation in a potentially explosive atmosphere (zone).

2D Devices of this category are designed for use in areas inwhich it is to be expected that an explosive atmosphere con-sisting of a dust/air mixture forms occasionally.

3G Devices of this category are designed for uses in areas inwhich it is to be expected that an explosive atmosphere re-sulting from gases, vapors or mists occurs, though in all like-lihood occurs only seldom and for a very short length of time.

3D Devices of this category are designed for uses in areas inwhich it is to be expected that an explosive atmosphere re-sulting from stirred-up dust occurs, though in all likelihoodoccurs only seldom and for a very short length of time.

Tab. 7



2.4.3 Explosion groupsCombustible gases and vapors are classified according to explosiongroups (I, IIA, IIB and IIC) and temperature classes. The following tableshows the classification of the most common combustible gases and va-pors.

T1 T2 T3 T4 T5 T6I Methane – – – – –IIA Acetone

EthaneEthyl ac-etateAmmoniaEthyl chlo-rideBenzeneAcetic acidCarbonmonoxideMethaneMethanolMethyl chlo-rideNaphthalenePhenolPropaneToluene

i-amyl ac-etaten-butanen-butyl alco-holCyclohex-anone1,2-dichloroethaneAcetic anhy-dride

GasolineDiesel fuelJet fuelHeating oilsn-hexane

Acetalde-hyde

– –

IIB Town gas EthyleneEthyl alcohol

Hydrogensulfide

Ethyl ether – –

IIC Hydrogen Acetylene – – – Carbondisulfide

Tab. 9

The classification of gases and vapors into groups with respect to explo-sion group and temperature class applies for the transferred medium aswell as for the pump surroundings.

Transferred medium The pump may only be used to transfer gases and vapors that belong tothe respective explosion group and corresponding temperature class (orbelow) (see designation on the type plate) or that are not explosive andcombustible.

Environment of the pump The pump may only be operated in an environment that contains an at-mosphere that belongs to the respective explosion group and correspond-ing temperature class (or below) (see designation on the type plate) or thatis not explosive and not combustible.



2.4.4 Temperature classesMaximum surface temperature The maximum surface temperature is the highest temperature that is

reached under the most unfavorable conditions of a surface of the pump.Ignition temperature The maximum surface temperature of the pump must always be lower

than the lowest ignition temperature of the gas or vapor/air mixture inwhich it is used.

Temperature class The maximum surface temperature arises from the design the pump and isspecified as temperature class.

Temperature class Max. surface tempera-ture [°C]

Ignition temperature[°C]

T1 450 > 450T2 300 > 300T3 200 > 200T4 135 > 135T5 100 > 100T6 85 > 85

Tab. 11

2.4.5 Ignition protection type

Designation Descriptionh Constructional safety "c"h Ignition source monitoring "b"h Liquid immersion "k"Tab. 13

An ignition hazard assessment in accordance with standards DIN EN ISO80079-36 and DIN EN ISO 80079-37 was performed for the pumps. Theprotective goals were reached by applying ignition protection type con-structional safety "c".



2.4.6 Equipment protection level for gasThe equipment protection level describes the frequency and the durationof the occurrence of explosive atmospheres in an area.

Equipmentprotectionlevel

Description* Constructionalsafety

Ga Devices with very high protection levelfor use in potentially explosive areas.With these devices, there is no risk of ig-nition during normal operation or in theevent of foreseeable or infrequent faults/malfunctions.

Very high

Gb Devices with high protection level foruse in potentially explosive areas inwhich there is no risk of ignition duringnormal operation or in the event of fore-seeable or infrequent faults/malfunc-tions.

High

Gc Device with increased protection levelfor use in potentially explosive areas.There is no risk of ignition during normaloperation. The devices have a numberof additional protection measures whichensure that, in the event of commonlyforeseeable faults in the device, no dan-ger of ignition exists.

Increased

Tab. 15 *according to DIN EN ISO 80079-36

2.4.7 Special operating conditions§ The pumps may not be set up outdoors. Commissioning may only be

performed with suitable weather- and corrosion-protection paneling.

§ The pumps are to be set up so that they are not exposed to any UV ra-diation.

Diaphragm pump N922 EX Safety


3 SafetyObserve the safety notices in Chapters 7 Installation and connec-tion and Operation.

The pumps are built in accordance with the generally recognized rules oftechnology and the occupational safety and accident prevention regula-tions. Nevertheless, dangers can arise during their use that lead to injuriesto the user or third parties or to damage to the pump or other property.Only use the pumps in perfect technical condition, for their intended pur-pose, safely and aware of the dangers and in observation of the operatinginstructions.The components that are to be connected to the pumps must be designedaccording to the pneumatic data of the pumps.When connecting the pumps to the electrical mains, observe the corre-sponding safety rules.

Personnel Make sure that only specially trained personnel or trained and instructedpersonnel work on the pumps. This applies, in particular, for connectionand servicing work.Make sure that the personnel have read and understood the operating in-structions, particularly the chapter on safety.

Working in a safety consciousmanner

Observe the regulations on accident prevention and safety during all workon the pumps and during operation.Avoid contact with the heads and housing parts as the pump heats up dur-ing operation.

When working on the pump, make certain that the pump is disconnectedfrom mains and without power.Make certain that no dangers arise from flow when gas connections areopen, from noises or from hot, corrosive, dangerous and environmentallyhazardous gases.

Classification of a pumpenvironment

When classifying a pump environment in a potentially explosive area(zone), observe the "Guideline for Preventing Danger from Explosive At-mospheres, with a Collection of Examples – Explosion Protection Guide-lines – (EX-RL)".If the situation relates to special cases or if doubt exists about the defini-tion of the potentially explosive areas, inform the regulatory authorities andhave them make the decision.

Use in potentially explosiveenvironment

The following applies for use in a potentially explosive environment con-sisting of gases, vapors and mists:The lowest ignition temperature of the potentially explosive atmospheresthat comes into question must be higher than the so-called "maximum sur-face temperature" of the pump.According to DIN EN ISO 80079-36, the maximum surface temperature isthe highest temperature that is achieved during operation under the mostunfavorable conditions (but within the accepted tolerances) of a part or ona surface of the pump.The maximum surface temperature is specified from the design of thepump and noted on the pump type plate as temperature class.

Working with hazardous media Upon breakage of the diaphragm and/or leaks, the transferred mediummixes with the air in the surroundings and/or in the pump housing. Makesure that a dangerous situation cannot arise as a result.When transferring hazardous media, observe the safety regulations for thehandling of these media.

Safety Diaphragm pump N922 EX


Working with combustible media Make certain that the temperature of the medium is always sufficiently be-low the ignition temperature of the medium so as to prevent ignition or ex-plosion. This also applies for abnormal operating situations.Note here that the temperature of the medium increases when the pumpcompresses the medium.Therefore, make certain that the temperature of the medium also remainssufficiently below the ignition temperature of the medium even when it iscompressed to the maximum permissible operating pressure of the pump.The maximum permissible operating pressure of the pump is stated inChapter 4 Technical data.

Make certain that the permissible ambient temperature (4 Technical data)is not exceeded.If applicable, also take into consideration external energy sources (e.g., ra-diation sources) that could add heat to the medium.In case of doubt, contact KNF Customer Service.

Environmental protection Store and dispose of all replacement parts in accordance with environmen-tal regulations. Observe the respective national and international regula-tions. This applies in particular to parts that are contaminated with toxicsubstances.

EU/EC directives/standards See EC/EU Declaration of Conformity

Customer service and repairs The pumps are maintenance-free. KNF does, however, recommend peri-odically inspecting the pumps for noticeable changes to noises and vibra-tions.Only have repairs to the pumps performed by the responsible KNF Cus-tomer Service.Housings with live components may only be opened by specialist person-nel.Use only original parts from KNF during servicing work.Only have repairs to the motors performed by the responsible KNF Cus-tomer Service.

Diaphragm pump N922 EX Technical data


4 Technical data

4.1 Technical dataPump materials

Assembly MaterialPump head Modified PTFEDiaphragm PTFE-coatedValve plate/seal FFPMO-ring (only .29 versions) FFPMTab. 17

Pneumatic values

Parameter ValueN922 EX 16L

ValueN922 EX 8L

Max. permissible operat-ing pressure [bar rel]

2.0 1.5

Ultimate vacuum [mbarabs.]

≤200 ≤350

Flow rate at atm. pres-sure [l/min]*:-open bypass-closed bypass

50 Hz 60 Hz 50 Hz 60 Hz10 ± 10%16 ± 10%

12 ± 10%18 ± 10%

3 ± 15%7.5 ± 10%

4 ± 15%9 ± 10%

Flow rate at max. permis-sible operating pressure[l/min]*

6.5 ± 10% 8 ± 10% 0 0

Tab. 19 *Liters in standard state (1013 mbar)

Other parameters

Parameter ValuePermissible ambient temperature[°C]

+ 5 to + 50

Permissible media temperature [°C] + 5 to + 50DimensionsN922 EX (three-phase motor)

N922 EX (capacitor motor)

N922.29 EX (three-phase motor)

N922.29 EX (capacitor motor)

See Fig. 4, Kapitel 7.1 Installing thepumpSee Fig. 3, Kapitel 7.1 Installing thepumpSee Fig. 6, Kapitel 7.1 Installing thepumpSee Fig. 5, Chapter 7.1 Installingthe pump

Electrical data See motor type plateGas tightness* of the pump head < 6 x 10-3 mbar l/sRelative air humidity 80% for temperatures to 31°C, de-

creasing linearly to 50% at 40°CStarts against:- Vacuum- Pressure

0.5 bar g800 mbar abs.

Tab. 21 * The gas tightness of the pump head is no longer ensured after the pumphead is opened or after replacing diaphragm and valve plates/seals. A leak testcan be used to determine whether the original gas tightness is again achieved.

Technical data Diaphragm pump N922 EX


Weight

Pump type Value [kg]N922 EX 7.2Tab. 23

Diaphragm pump N922 EX Design and function


5 Design and functionDesign

1 Pump outlet2 Pump inlet3 Pump head4 Motor5 Capacitor (only capaci-

tor motor)6 Terminal box7 Adjustment valve for

flow rate (only .29 ver-sions)

Fig. 1 Design N922.29 EX

Function of a diaphragm pump1 Outlet valve2 Inlet valve3 Transfer chamber4 Diaphragm5 Eccentric6 Connecting rod7 Pump drive

Fig. 2 Function of a diaphragm pump

Diaphragm pumps transfer, compress (depending on the version) and evacu-ate gases and vapors.The elastic diaphragm (4) is moved up and down by the eccentric (5) and theconnecting rod (6). In the downwards stroke, it aspirates the gas to be trans-ferred via the inlet valve (2). In the upwards stroke, the diaphragm presses themedium out of the pump head via the outlet valve (1). The transfer chamber(3) is hermetically separated from the pump drive (7) by the diaphragm.

Transport Diaphragm pump N922 EX


6 Transport

General

CAUTION

Personal injury and/or property damage due to in-correct or improper transport of the pumpIn the event of incorrect or improper transport, thepump can fall down, be damaged or injure per-sons.

àUse suitable auxiliary means if necessary(carrying strap, lifting gear, etc.).

àWhere appropriate, wear suitable personalprotective equipment (e.g., safety shoes,safety gloves).

CAUTION

Risk of injury from sharp edges on the packagingThere is a risk of injury from cutting on the sharpedges when grabbing corners or when openingthe packaging.

à Where appropriate, wear suitable personalprotective equipment (e.g., safety shoes,safety gloves).

à Transport the pump in the original packaging to the installation loca-tion.

à Store the original packaging of the pump (e.g., for later storage).

à Inspect the pump for transport damage after receiving it.

à Document any transport damage in writing.

à Remove any transport safeguards on the pump prior to commissioning.

Parameter

Parameter ValueStorage temperature [°C] + 5 to + 40Transport temperature [°C] - 10 to + 60Permissible humidity (non-condens-ing) [%]

30 to 85

Tab. 25 Transport parameters

Prior to commissioning, make sure that the pump has reached theambient temperature (4 Technical data).

Diaphragm pump N922 EX Installation and connection


7 Installation and connectionThe pumps are only to be installed in accordance with the operating pa-rameters and conditions described in Chapter 4 Technical data.à Observe the safety notices (see Chapter Safety).

DANGER

Risk of dangerous gas mixtures during pump op-erationDepending on the medium being transferred,breakage of the media-contacting componentscan result in a dangerous mixture if the mediummixes with the air in the compressor housing orthe surroundings.

à Before using a medium, check the compati-bility of the media-contacting components(see 4 Technical data) with the medium.

7.1 Installing the pumpà Before installing, store the pump at the installation location to allow it to

reach the ambient temperature.Mounting dimensions à For mounting dimensions, see the following figures:

Installation and connection Diaphragm pump N922 EX


Fig. 3 Mounting dimensions N922 EX (capacitor motor)



Fig. 4 Mounting dimensions N922 EX (three-phase motor)



Fig. 5 Mounting dimensions N922.29 EX (capacitor motor)



Fig. 6 Mounting dimensions N922.29 EX (three-phase motor)

Cooling air supply

WARNING

Risk of explosion due to lack of cooling air supply

àMount the pump so that the fan wheel of thepump can draw in sufficient cooling air.

àEnsure sufficient ventilation or heat dissipationin the vicinity of the pump.

WARNING

Danger of burning on hot surfacesHot surfaces could occur if the pump overheats.

à When installing the pump, make sure thatsufficient cooling air infeed and discharge isensured.

Immediate environment of thehot pump parts

à During installation, make sure that no combustible or thermally de-formable objects are positioned in the immediate environment of thehot pump parts (head, motor).



Installation location à Make sure that the installation location is dry and that the pump is pro-tected against rain, splash, gushing and drip water as well as fromother contaminants.

à Make sure that the installation location is accessible for service.

à Make sure that access to moving parts is prevented.

The IP protection class of the pump motor is specified on the typeplate.

à Mount the pump at the highest point in the system to prevent conden-sate from collecting in the pump head.

à Protect the pump from dust.

à Protect the pump from vibration and impact.Installation position à The pump must be installed in the depicted installation position. Use

metal screws to fasten the pump at the attachment points indicated inChapter 7 Installation and connection.

WARNING

Personal injury and/or property damage from vi-brationsPump vibrations, in combination with adjacentcomponents, can result in crushing and/or dam-age to these components.

à Make sure that pump vibrations cannot leadto dangers in combination with adjacent com-ponents.



7.2 Aligning the compressor housingTool Quantity Tool/material

1 Allen key, 2 mm1 Allen key, 4 mmTab. 27

If damp gases are transferred with the pump, condensate may formin the pump head during operation. This results in, among otherthings, a reduction of the pump flow rate.To ensure optimum suction capacity, it is possible to orient thepump head downwards so that the condensate that forms can sim-ply drain out of the pump head. For this purpose, the compressorhousing including pump head (depending on installation position)can be rotated in increments of 90° and mounted.

1 Housing cover2 Allen screws3 Eccentric4 Motor fastening screws

Fig. 7

1. Loosen the four Allen screws (2) of the housing cover (1) and removethem.

WARNING

Risk of explosion from damageIf the housing cover is bent or if the paint is dam-aged, there is no risk of explosion.

à Perform the work steps carefully and withoutthe use of force.

2. Remove the housing cover (2).

The eccentric crank drive (3) and the four motor fastening screws (4)become visible.

3. Loosen and remove the four motor fastening screws (4).



4. Turn the housing to the desired position.

The compressor housing can be rotated completely around its ownaxis relative to the motor in 90° increments.

Fig. 8 Installation positions of the compressor housing

5. Screw in the four motor fastening screws (4) and tighten them (tighteningtorque: 6 Nm).

6. Position the housing cover (1) and screw down with the four Allen screws(2) (tightening torque: 15 Ncm).



7.3 Electrical connection

DANGER

Danger to life from electric shock

àOnly have the pump connected by an autho-rized specialist.

àOnly have the pump connected if the powersupply is disconnected.

WARNING

Risk of explosion from electrostatic charge

àConnect the pump so that the risk of ignitionfrom electrostatic charge is avoided.

àCarefully ground the pump.

à When connecting to a power source, observe the applicable standards,directives, regulations and technical standards.

à When connecting to a power source, carefully read and observe theoperating instructions for the motor.

à Install a device for separating the pump motor from the electrical mainsin the electrical installation.

à It is recommended that an additional emergency-off system be in-stalled.

Potentially explosiveatmospheres

à Only place the electrical equipment in potentially explosive areas thatis necessary there for the operation of the pump.

à Take lightning protection measures.Fastening the connection cables à Fasten the connection cables so that

– the cables do not come into contact with movable or hot parts.– the cables cannot be worn or damaged on sharp corners or edges– no tensile and pressure forces are exerted on the connection point

of the cables (strain relief)



7.4 Pneumatic connection

CAUTION

Personal injury or property damage throughejected plugsIf not removed, the plugs on the pressure side ofthe pump can be ejected during operation by theresulting overpressure.

àRemove the plugs during installation.

àWear appropriate personal protective equip-ment.

Connected components à Only connect components to the pump that are designed for the pneu-matic data and thermal requirements of the pump. (see Chapter 4Technical data).

Pressure relief device à Protect the compressors by means of a pressure relief device betweenthe pressure-side connections of the compressor and the first shut-offvalve.

WARNING

Risk of explosion during pressure limitation result-ing from the medium mixing with the environment

à Make certain that there is no risk of explosionposed by the medium mixing with the envi-ronment.

Pump discharge à If the pump is used as a vacuum pump, safely (with respect to mediumand noise) drain the hot pump discharge that may, under certain cir-cumstances, occur at the pneumatic outlet of the pump.

Decoupling à KNF recommends mechanically decoupling the pump from the pipesystem, e.g., through the use of flexible hoses or pipes. In this way it ispossible to prevent the transfer of possible pump vibrations and noisesto the system.

Connecting the pump

CAUTION

Risk of injury from mixing up suction side andpressure sideMixing up the suction side and pressure side canresult in breakage of connected components onthe suction side and pressure side.

à Observe the marking of inlet and outlet onthe pump head.

1. Remove the protective plugs from the gas connection threads.2. Connect the suction line and the pressure line (for mounting dimen-

sions, see Chapter 4 Technical data).3. Lay the suction line and the pressure line at a downward angle to pre-

vent condensate from running into the pump.

Diaphragm pump N922 EX Operation


8 Operation

8.1 General

WARNING

Risk of burns from hot pump parts and/or hotmediumSome pump parts may be hot during or after oper-ation of the pump.

àAllow the pump to cool after operation.

àTake protective measures to protect againsttouching hot parts.

WARNING

Injury to eyesComing too close to the inlet/outlet of the pumpmay result in injury to the eyes due to the presentvacuum/operating pressure.

à Do not look into the pump inlet/outlet duringoperation.

à Only operate the pumps in accordance with the operating parametersand operating conditions described in Chapter 4 Technical data and inChapter 2.3 Use in potentially explosive areas.

à Ensure the proper use of the pumps (See Chapter 2.1 Proper use).à Eliminate the possibility of improper use of the pumps (see Chapter Im-

proper use).

à Observe safety notices (Chapter Safety).

à The pumps are built-in devices. Before they are commissioned, it mustbe ensured that the machines or systems into which the pumps wereinstalled comply with the relevant provisions.

Operation Diaphragm pump N922 EX


WARNING

Risk of pump head bursting due to excessivepressure increase

àDo not exceed the maximum permissible op-erating pressure (see 4 Technical data).

àMonitor the pressure during operation.

àIf the pressure exceeds the maximum permis-sible operating pressure of the pump: immedi-ately switch off the pump and remedy the fault(see Chapter Troubleshooting).

àOnly throttle or regulate the air or gas quantityon the suction line to prevent the maximumpermissible operating pressure from being ex-ceeded.

àIf the air quantity or gas quantity on the pres-sure line is throttled or regulated, make surethat the maximum permissible operating pres-sure at the pump is not exceeded.

àEnsure that the pump outlet is not closed orrestricted.

WARNING

Risk of explosion from elevated ambient tempera-ture

àMonitor the ambient temperature (compres-sion heat, motor heat).

àEnsure sufficient cooling air supply.

Excessive pressure, with all of the associated hazards, can be pre-vented by means of a bypass line with a pressure relief valve be-tween the pressure side and suction side of the pump. Further infor-mation is available from KNF Customer Service (contact data: seewww.knf.com).

WARNING

Risk of dangerous gas mixtures during pump op-eration if diaphragm breaksIf the diaphragm should break, the medium willmix with the air in the compressor housing or inthe surroundings.

àStop pump immediately.

àReplace the diaphragm prior to further opera-tion (see Chapter 9 Servicing).

Because the diaphragm is a wear part, diaphragm breakage mayoccur at any time.

Pump standstill à When the pump is at a pump standstill, establish normal atmosphericpressure in the lines.

Diaphragm pump N922 EX Operation


Vapors as medium à The service life of the diaphragm can be extended by preventing theformation of condensate in the pump. Therefore, only perform workwith saturated or nearly saturated vapors with a warm pump.

Operation with open suction-side gas connection can result in con-taminants and objects being drawn in.

8.2 Information on switching the pump on and offSwitching on the pump

The pump may start up against pressure and/or vacuum duringswitch-on (see 4 Technical data). This also applies during operationafter a brief power failure.

à Ensure that normal atmospheric pressure is present in the lines whenswitching on.

Switching off the pumpà KNF recommends: When transferring aggressive media, flush the

pump before switching off (see Chapter 9.2.1 Flushing the pump) to ex-tend the service life of the diaphragm.

à Establish normal atmospheric pressure in the lines (relieve pumppneumatically).

Recommissioning à Before recommissioning, observe the applicable standards, guidelines,regulations and technical standards at the electrical connection.

Inspecting the pump à Inspect the pump periodically for external damage or leakage.

Operation Diaphragm pump N922 EX


8.3 Adjust the flow rate (.29 version)Tool Quantity Tool/material

1 Screwdriver blade width 6.5 mmTab. 29

à If, for analysis systems, it is not possible to precisely determine suctionlosses and the resistance of measuring devices, set the desired flowrate as follows:

Reducing the flow rateà Turn adjustment screw X counterclockwise.

Increasing the flow rateà Turn adjustment screw X clockwise.

When the valve is closed as well as when completely open, signifi-cant resistance is felt; then turn no further.The corresponding end position is reached.

X Self-locking adjustmentscrew

Fig. 9 Setting the flow rate (N922FT.29E EX)

Diaphragm pump N922 EX Servicing


9 Servicing

9.1 Servicing schedule

WARNING

Risk of explosion from wear

àHave the connecting rod bearing replaced byKNF according to servicing schedule.

àHave the motor bearing replaced by KNF ac-cording to servicing schedule.

WARNING

Risk of explosion if original parts are not usedIf original parts are not used, the pump loses itsexplosion protection properties. Furthermore, thefunction of the pump and it safety are lost.The validity of the CE conformity is rendered voidif original parts are not used.

à Use only original parts from KNF during ser-vicing work.

Component Servicing intervalPump à Inspect the pump periodically for

external damage or leakageZone diaphragm and valve plates/seals

à At the latest, replace when thepump flow rate decreases

Connecting rod bearing à Have replaced after 17,000 op-erating hours or after no morethan 24 months

Motor bearing à Have replaced after 17,000 op-erating hours or after no morethan 24 months

Gas connections à Inspect the pump periodically forexternal damage or leakage

Tab. 31

Servicing Diaphragm pump N922 EX


9.2 Cleaning

9.2.1 Flushing the pump

WARNING

Risk of explosion by flushing the pump with air

à In potentially explosive areas or when usingthe pump with explosive media, only permitspecialist to flush the pump with inert gas.

à Before switching off the pump under atmospheric conditions, flush forseveral minutes with inert gas.

If there is no risk of explosion, flushing can also be performed withair.

9.2.2 Cleaning the pump

WARNING

Risk of explosion from electrostatic charging of thecomponents

à Only clean the pump with a damp cloth.

à Only clean the pump with a damp cloth and non-flammable cleaningagents.

à If compressed air is present, blow out the components.

9.3 Replacing diaphragm and valve plates/sealsRequirements à Disconnect the motor from mains and ensure that it is voltage-free.

à Clean the pump and free the pump of hazardous materials.

Spare parts Spare part* Position designation** QuantityZone diaphragm (6) 1Valve plates/seals (9) 2O-ring (.29 versions) (10) 1Tab. 33 *According to spare parts list, Chapter 11.1 Spare parts**According to Fig. 10

Tool and material Quantity Tool/material1 Allen key, 3 mm1 Allen key, 4 mm1 Felt-tip penTab. 35

Information on the procedure Always replace zone diaphragm, valve plates/seals and O-ring (only .29version) together to maintain the performance of the pump.



WARNING

Risk of explosion from formation of potentially ex-plosive atmosphereLeaky connections can result in dangerous explo-sive atmospheres.

àMake sure that diaphragm, valve plates/seals,and O-ring are installed undamaged, cleanlyand correctly.

àCheck the pneumatic connections of the pumpfor leaks.

àWork with care during service work.

àReplace defective parts immediately.

WARNING

Health hazard due to dangerous substances in thepumpDepending on the medium being transferred,caustic burns or poisoning is possible.

àWear protective equipment if necessary, e.g.,protective gloves, goggles.

àClean the pump with suitable measures.

Work steps

The item numbers within the following work instruction refer to Fig.10.

Removing the pump head1. Mark the position between housing (1), intermediate plate (2), head

plate (3) and pressure plate (4) by means of a continuous line madewith a felt-tip pen to ensure proper mounting.

2. Removing the pump head:Loosen the six screws (5) and remove the pressure plate (4), headplate (3) and intermediate plate (2) together from the pump housing.

Replacing the diaphragm1. Loosen the four Allen screws ( Fig. 7/2) of the housing cover ( Fig. 7/1)

and remove the screws.

WARNING

Risk of explosion from damageIf the housing cover is bent or if the paint is dam-aged, there is no risk of explosion.

à Perform the work steps carefully and withoutthe use of force.

2. Remove the housing cover ( Fig. 7/1).3. Move the connecting rod (connection part between drive shaft and di-

aphragm) to the upper reversal point.4. Hold the diaphragm (6) on the side edges and unscrew it counterclock-

wise.5. Check all parts for soiling and clean them if necessary (see Chapter

9.2 Cleaning).



6. Screw the new diaphragm (6) onto the diaphragm support clockwiseand hand tighten.

If the zone diaphragm is overtightened, there is risk of the PTFEcoating detaching.

Replacing valve plate and seal1. Remove the pressure plate (4) with the six screws (5) from the pump

head.2. Loosen the screw (7) and remove it together with the washer (8).3. Separate the head plate (3) from the intermediate plate (2).

Carefully set down the head plate to so as not to damage its sealingedge.

4. Remove the valve plates/seals (9) from the intermediate plate (2).5. Only for .29 versions:

Remove the O-ring (10) from the intermediate plate.6. Check the valve seats, intermediate plate (2), head plate (3) and, if

necessary, O-ring groove for soiling and damage. Clean the parts ifnecessary.Contact KNF in the event of unevenness, scratches or corrosion. Orderand replace the damaged parts.

7. Inserting valve plate/seal:

Valve plates/seals are identical for the pressure and suction side;the same applies for the top and bottom of the valve plates/seals.Insert the new valve plates/seals (9) in the valve seats of the inter-mediate plate (2).

8. By moving the valve plates/seals (9) sideways slightly, make sure thatthe valve plates/seals (9) are centered in the valve seats of the inter-mediate plate (2).

9. Only for .29 versions:Insert the new O-ring (10).

10. Place the head plate (3) on the intermediate plate (2) according to thelocating pin (12) and the felt-tip pen marking.

11. Check the centering of the head plate (3) by means of a slight lateralmovement.

12. Connect the head plate (3) and the intermediate plate (2) to one an-other by tightening the screw (7) with underlying washer (8) (tighteningtorque: 100 Ncm).

13. Place the pressure plate (4) with the six screws (5) on the head plate(3) and the intermediate plate (2) according to the felt-tip pen marking.

14. Properly dispose of the replaced diaphragm, valve plates/seals and, ifapplicable, O-ring.

Mounting the pump head1. Place the pump head on the housing according to the felt-tip pen mark-

ing.2. Screw in the screws (5) and tighten them lightly crosswise.3. Check for ease of movement of the pump by turning the counterweight.4. Tighten the screws (5) crosswise (tightening torque: 450 Ncm).5. Position the housing cover ( Fig. 7/1) and screw down with the four

Allen screws ( Fig. 7/2) (tightening torque: 15 Ncm).

Final steps1. Reconnect the suction line and the pressure line to the pump.



2. Connect the pump to the electrical mains.3. Checking the pump head (pump heads) and pneumatic connections for

leaks:

To ensure the required gas tightness of the pump following servic-ing, a leak test is to be performed.

WARNING

Risk of explosion from leaks

à Before recommissioning the pump, check thepump heads and pneumatic connections forleaks. Leaks may lead to a risk of explosion.

WARNING

Risk of injury and poisoning from leaks

à Before recommissioning the pump, check thepump heads and pneumatic connections forleaks. Leaks may lead to poisoning, chemicalburns or similar injuries.

Before recommissioning, observe the applicable standards, guide-lines, regulations and technical standards at the electrical connec-tion.

If you have questions with regard to maintenance, please contact yourKNF technical adviser (contact data: see www.knf.com).



1 Housing2 Intermediate plate3 Head plate4 Pressure plate5 Screws6 Diaphragm7 Screw8 Washer9 Valve plate/seal

10 O-ring (only .29 version)11 Adjusting valve (only .29

version)12 Locating pin

Fig. 10 Pump parts N922FT.29E EX



9.4 Changing the adjusting valve (.29 version)Tool Quantity Tool/material

1 Wrench, WAF 22 mmTab. 37

The item numbers within the following work instruction refer to Fig.10.

4. Use a wrench to unscrew the adjusting valve (11) out of the headcounterclockwise.

5. Screw the new adjusting valve (11) into the head and tighten (tighten-ing torque: 450 Ncm).

Fig. 11 Adjusting valve

The adjusting valve (11) is preset ex works to a defined value. Nochanges may therefore be made to the adjusting valve before it ismounted on the head.Should deviations or discrepancies nevertheless occur, the follow-ing is to be observed according to Fig. 11:1. Threaded part (Y) and adjustment screw (X) must be flush formounting.2. The valve diaphragm (Z) must be fully screwed in but must notbe overtightened.

3. Adjust the flow rate according to 8.3 Adjust the flow rate (.29 ver-sion).

Troubleshooting Diaphragm pump N922 EX


10 Troubleshooting

DANGER

Danger to life from electric shock

àAll work on the pump may only be performedby an authorized specialist.

àDisconnect the pump power supply beforeworking on the pump.

àCheck and ensure that no voltage is present.

à Allow the pump to cool before troubleshooting.

à Check the pump (see following tables).

à Also observe the operating instructions for the motor when trou-bleshooting.

Pump does not transferCause Fault remedyPump is not connected to the elec-trical mains.

à Connect the pump to the electrical mains.

No voltage in the electrical mains. à Check the room fuse and switch on if necessary.Connections or lines are blocked. à Check the connections and lines.

à Remove the blockage.External valve is closed or filter isclogged.

à Check external valves and filters.

Condensate has collected in thepump head.

à Separate the source of the condensate from thepump.

à Flush the pump with air at atmospheric pressurefor a few minutes (if necessary for safety reasons:with an inert gas).

à Install the pump at the highest location in the sys-tem.

Diaphragm or reed valves/valveplate are worn.

à Change the diaphragm and the reed valves/valveplate(see Chapter 9 Servicing).

Tab. 39

Diaphragm pump N922 EX Troubleshooting


Flow rate, pressure or vacuum too lowThe pump does not achieve the flow rate specified in the technical specifications orin the data sheet.Cause Fault remedyCondensate has collected in thepump head.

à Separate the source of the condensate from thepump.

à Flush the pump with air at atmospheric pressurefor a few minutes (if necessary for safety reasons:with an inert gas).

à Install the pump at the highest location in the sys-tem.

There is overpressure on the pres-sure side and at the same timevacuum or pressure above atmo-spheric pressure on the suctionside.

à Change the pneumatic conditions.

Pneumatic lines or connectionparts have insufficient cross sec-tion or are throttled.

à Disconnect the pump from the system to deter-mine the output values.

à Eliminate throttling (e.g., valve) if necessary.

à Use lines or connection parts with larger crosssection if necessary.

Leaks occur at connections, linesor pump head.

à Eliminate the leaks.

Connections or lines are com-pletely or partially plugged.

à Check the connections and lines.

à Remove parts and particles that are causing theplugging.

Head parts are soiled. à Clean the head components.Working diaphragm broken à Stop pump immediately.Diaphragm or reed valves/valveplate are worn.

à Change the diaphragm and the reed valves/valveplate(see Chapter 9 Servicing).

Pump exhibiting changed runningnoises and vibrations.

à Stop pump immediately.

à Contact KNF Customer Service.Tab. 41

Pump exhibiting changed running noises and vibrations.Cause Fault remedyPump bearing worn or defective. à Determine the cause.

à Contact KNF Customer Service.Motor worn or defective. à See operating instructions for motor.Coupling worn or defective. à See operating instructions for coupling.

Tab. 43

Troubleshooting Diaphragm pump N922 EX


Fault cannot be rectifiedIf you are unable to identify any of the specified causes, send the pump toKNF Customer Service (contact data: see www.knf.com).1. Flush the pump with air at atmospheric pressure for a few minutes (if

necessary for safety reasons: with inert gas) to free the pump head ofdangerous or aggressive gases (see Chapter 9.2.1 Flushing the pump).

2. Clean the pump (see Chapter 9.2.2 Cleaning the pump).3. Send the pump together with completed Health and Safety Clearance

and Decontamination Form to KNF, stating the nature of the trans-ferred medium.

Diaphragm pump N922 EX Spare parts and accessories


11 Spare parts and accessories

11.1 Spare partsSpare part setA spare part set consists of:

Parts QuantityDiaphragm 1Valve plates/seals 2O-ring (Ø 5.5 x 2) (only .29 version) 1Tab. 45

Spare part set Order numberN922FTE EX 313515N922FT.29E EX 313516Tab. 47

Spare part Order numberAdjusting valve (only for .29 version) 309629Tab. 49

11.2 Accessories

Accessories Order numberHose screw connection, PVDF, forhose ID 6 x 1

303623

Mounting kit - rubber-bonded metals 313180Mounting kit - rubber-bonded metalsand mounting bracket

313181

Tab. 51

Spare parts and accessories Diaphragm pump N922 EX


Fig. 12 Pump with accessories(depicted with hose screw connection, mounting kit - rubber-bonded metals andmounting bracket)

Diaphragm pump N922 EX Returns


12 ReturnsPrerequisite for repairing a pump by KNF is a completed DecontaminationForm.This is made available on the KNF website as a download.

§ To find the form, select your country on the overview page(www.knf.com).

You can find the Decontamination Form in the download area.If you have questions, please contact your sales partner (contact data: seewww.knf.com).

http://www.knf.comhttp://www.knf.com

Appendix Diaphragm pump N922 EX


13 Appendix

13.1 Declaration of Conformity

For further information, see also§ Konformitätserklärung N922 EX

Diaphragm pump N922 EX Appendix


13.2 Motor

For further information, see also§ Betriebsanleitung Motor.pdf§ Anschlussplan Motor.pdf§ CE-Erklärung Motor.pdf

GBMotors series O-M

Safety, installingmaintenance instructions

www.orange1.eu

(Rev.00 – 28-01-2019)

1. GENERAL SAFETY INFORMATION

These security instructions refer to the installation, utilization andmaintenance of motors O-M series to be used in potentially explosive areaswith presence of combustible GAS and/or DUST. The information of theseinstructions are only for qualified personnel. Except for the opening of terminalcover, any other opening cancels the warranty conditions of the motors.Here below you can see the different markings of the motors and the differentzones where they can be used:

GAS

II 2G Ex db IIC T3 Gb T.amb –40°C , +60°CII 2G Ex db IIC T4 Gb T.amb –40°C , +60°CII 2G Ex db IIC T5 Gb T.amb –40°C , +40°C

II 2G Ex dbeb IIC T3 Gb T.amb –40°C , +60°CII 2G Ex dbeb IIC T4 Gb T.amb –40°C , +60°CII 2G Ex dbeb IIC T5 Gb T.amb –40°C , +40°C

Zones1, 2

DUST II 2D Ex tb IIIC T125°C T.amb –40°C , +60°C(maximum thicknes of dust layer 5mm)Zones21, 22

The motors comply with the Essential Health and Safety Requirements forpotentially explosive atmospheres provided by European Standards:

IEC/EN 60079-0, IEC/EN 60079-1, IEC/EN 60079-7, IEC/EN60079-31

Electric rotating machines present dangers from live and rotating parts,and probably very hot surfaces. All work on them including transportation ,connection , commissioning and maintenance must be by qualified andresponsible specialists ( IEC 364 must be observed). Inadequate work canlead to severe damage to persons and property.

It is imperative to observe the data printed on the nameplate beforeoperating the motor. Low voltage motors are components to be installed intomachines in accordance with Directive 2006/42/EC.Commissioning is not allowed until the conformity of the end product with thisdirective has been established.These asynchronous motors comply the EMC (2014/30/UE) Directive and noparticular shielding is necessary when connected to a pure sinewave voltagesupply.

Before working on the motor, ensure it has stopped and is disconnectedfrom the power supply (including auxiliary equipment).If there is any form ofautomatic starting, automatic resetting, relays or remote starting, avoid anypossibility of unexpected re-starting, paying attention to specificrecommendations on equipment application.

2. TRANSPORT, STORAGEOn receipt verify that the motor has not been damaged during transport

and in this case avoid any installation and communicate immediately to thetransport service.Eyebolts, when provided with the motor, must be tightened properly as theyare suitable only for lifting the motor, no additional loads are allowed to beattached. If necessary use sufficiently dimensioned devices as a means oftransport.Do not use any projection of the motor body to hang the motor for transportpurposes.If two eyebolts are present on the motor use both for lifting.Store low voltage motors in a dry, dust free and low vibration (v eff 35 mm2

Connection of auxiliary cables (“e” terminal box)

If the motor is provided with terminal board with auxiliary pins theconnection of thermal protection and/or heaters can be made in such pins.If the motor is provided with just a terminal board having just the 6 mains pinsthe connection of thermal protection and heaters have to be made by weldingthe wires of auxiliary devices with the wires of the cable and insulate using aheat-shrink sheath.

Protection

The motor must be protected by a tripping device that in case ofbreakdown, cut off the supply of the motor so that the surface temperature ofthe parts in contact with the explosive atmosphere doesn’t reach the ignitiontemperature.

Motors for inverter duty

In case the motors are supplied by inverter, they shall be provided withprotectors inside the windings (normally PTC thermistors), capable of assuringthe respect of temperature class limits..Such devices shall be connected to a control device able to cut off power to themotor in case of reaching of the limit temperature.

Heaters

The heaters shall be supplied only when the motor is not under power.Tha cables have to be adequate for a power of 25W with supply that can befrom 110V up to 240V (±10%).

Permissible loadAssuming a life-span of 20.000h for 2P motors and 40.000h for 4,6,8P motors:ù

Pull

ThrustF

F

L L/2

F

Motorsize Bearings

Maxradialloadin L/2

Maxaxialload

(Thrust)

Maxaxialload(Pull)

63 6202 365 230 12071 6202 450 280 16080 6204 590 370 22090 6205 645 400 230

100 6206 920 560 350112 6306 1280 700 480132 6308 1345 770 590160 6309 2465 1401 714180 6310 3000 1498 615

Allowed duty servicesS1: Continosus duty the motor works at a constant load until thermalequilibrium is reached.S2: Intermittent duty: Once started, the motor works at a constant load for alimited period and thermal equilibrium is not reached. Motor will be started asecond time then when its temperature has decreased to room temperature.S3: Intermittent duty: A sequence of identical duty cycles, made up with a timeof operation at constant load and a time at rest. When at rest, the motor is notfed. Starting current does not significantly influence temperature rise.S9: Load and speed vary periodically within the permissible operating range.Frequent overloading may occur. Tipical of motors supplied by inverter (seeabove).

Motors with forced ventilation (IC416)In case of motors with forced ventilation, the main motor can be supplied onlywhen the auxiliary ventilation is already working.

5. MARKING

(*) Marking of conformity to the European Directives

(*) Specific marking of explosion protection

II (*) Motor for surface plants (different from mines)

2 (*) Category 2: high level of protection

GAS

G (*) explosive atmosphere due to presence of combustiblegas vapour or mistEx db Flameproof motor and terminal box

Ex dbeb Flameproof motor, increased safety terminal box

IIC Gas group, suitable for IIB and IIA

T3, T4, T5 Temperature class

DUST

D (*) explosive atmosphere due to presence of combustibledustEx tb IIIC tb enclosures suitable for zone 21 (cat. 2D)

T125°C Max surface temperature

T.amb Ambient temperature

AB xx yyyAB : laboratory which issues the CE type certificate

xx : year of issue of certificateyyy : number of CE type certificate

ZZZZ (*) Notified Body that gives the Product Quality AssuranceNotification(*) Only for ATEX marking

6. MAINTENANCE AND REPAIRMAINTENANCE shall be performed only by qualified people in

accordance with the standard IEC/EN 60079-17 or national standards (lastedition).Qualified people must have knowledge about electrical apparatus forexplosive atmospheres and electrical installations in hazardous areas.- Every 3000 hours of service verify and restore, if necessary, the grease onthe radial seals (for example V-rings).Periodically (depending on the environment and duty) verify:- motor cleanliness (oil, DUST, dirt and machining residuals absence) and freepassage of cooling air- correct tightening of electrical connections, of fastening screws- free motor running with low vibration (v eff

ORANGE 1 ELECTRIC MOTORS S.P.A.Via Mantova 93 43122 Parma Italy

Te. +39 (0)521 272383www.orange1.eu

Dichiarazione UE di Conformità / UE Declaration of Conformity / Déclaration UE de ConformitéUE Konformitätserkärung / Declaration UE de Conformidad

I motori elettrici asincroni /Electric asynchronous motors / Les moteurs électriques asynchroneElektrische asynchron motoren typ / Los motores electricos asincronos del tipo

Serie O-MChe riportano la marcatura

Bearing the marks / Marques / Kennzeichnung / Que llevan marcado

0477 II 2G Ex db IIC T3 Gb or II 2G Ex db IIC T3 Tamb–40°C +60°C EPT 17 ATEX 2588 X

0477 II 2G Ex db e IIC T3 Gb or II 2G Ex db eb IIC T3 Tamb–40°C +60°C EPT 17 ATEX 2588 X


0477 II 2G Ex db e IIC T4 Gb or II 2G Ex db eb IIC T4 Tamb–40°C +60°C EPT 17 ATEX 2588 X


0477 II 2G Ex db e IIC T5 Gb or II 2G Ex db eb IIC T5 Tamb–40°C+40°C EPT 17 ATEX 2588 X

0477 II 2D Ex tb IIIC T125°C Tamb–40°C +60°C EPT 17 ATEX 2588 X

Sono prodotti da/ Are manufactured by/ Sont fabriqués par la société/ Wurden gefertigt von/ Han sido fabricadospor

ORANGE 1 ELECTRIC MOTORS S.P.A.in accordo alle seguenti Direttive CE/in compliance with the EC Directives/selon les Directives CE suivantes

in übereinstimmung mit den folgenden EG-Richtlinien/de acuerdo con las siguientes Directivas EC

2014/34/UE (ATEX)2014/30/UE (EMC)2006/42/EC (Machinery)2015/863 / EU (RoHS III)

e in conformità alla seguenti Norme/ and comply with the following Standards / et enconfrmité avec les Normesund entsprechen den folgenden Standard / y conform a las sigulentes Normas

EN 60079-0:2012+A11:2013, EN 60079-1:2014, EN 60079-31:2014, EN 60079-7:2015EN 60034-1,2,5,6,7,9,12,14, IEC60072-1, EN 60259

NOTA/ NOTE/ BEMERKUNG/ NOTAS(Directive 2006/42/EC Direttiva Macchine, Machinery Directive, Directive Machine, Maschinen-Richtlinie, Directiva Maquinaria)

I motori in oggetto sono considerati componenti, in accordo con la direttiva macchine. Il motore non deve essere messo in serviziofinché la macchina stessa su cui è montato non venga dichiarata conforme alla direttiva macchine.

Above motors considered as components, comply with the directive machine. The motor must not be incorporated in service until the machineitself has not been declared in conformity with the machinery directive.

Les moteurs ci-dessus considérés comme composants sont conformes à la directive machine. Le moteur ne peut être incorporéet mis en service avant que la machine dans laquelle il est incorporé ne soit déclarée conforme à la directive machine.

Für die korrekte installation der oben genannten Motore sowie der entsprechenden komponenten, die in ihrer Bauart mit den zu dieserBescheinigung aufgeführten Vorschriften übereinstimmen, ist der Mashinenherstelle/Maschinenbetreiber verantwortlich. Die Motorenentsprechen den Vorschriften nur, solange die Anlage, in der sie eingebaut wurden, in übereinstimmung mit den geltenden Maschinen-

richtlinien und Vorschriften errichtet wurde.

Los motores en objecto, por tratarse de componentes, cumplen las normas de la directiva si la instalacion està correctamente controlada por elconstructor de la màquina. El motor no debe entrar en servicio hasta que la màquina en que ha sido incorporado disponga de la declaration de

la directive maquinaria

Product Quality Assurance Notification Number: EPT 18 ATEX 2964 QNotified by Eurofins Product Testing Italy S.r.l. – Notified Body n.0477 - Via Courgné 21 - 10156 Torino Italy

Mauro GranaLegale Rappresentante

02/01/2019

Schemi di collegamento / Wiring diagrams

Trifase 1 Velocità 2-4-6-8 poli (6 fili) – Three-phase 1 speed 2-4-6-8 poles (6 wires)

U1 V1 W1

W2 U2 V2

L1 L2 L3L1 L2 L3

U1

W2 U2 V2

W1V1U1 V1 W1

W2 U2 V2

L1 L2 L3L1 L2 L3

U1

W2 U2 V2

W1V1

T11

T22

T11

T22

(D) Collegamento deltaTensione inferioreDelta connection

lower voltage

(Y) Collegamento stellaTensione superioreStar connectionhigher voltage

(D) Collegamento deltaTensione inferioreDelta connection

lower voltage

(Y) Collegamento stellaTensione superioreStar connectionhigher voltage

Trifase doppia velocità 1 avvolgimento – Three-phase double speed 1 winding

U1 V1 W1

W2 U2 V2

L3 L1 L2L1 L2 L3

U1

W2 U2 V2

W1V1U1 V1

W2 U2

L3 L1 L2L1 L2 L3

U1

W2 U2 V2

W1V1

1T1

2T2

1T1

2T2

W1

V2

Bassa velocità – Low speed Alta velocità – high speed Bassa velocità – Low speed Alta velocità – high speed

Trifase doppia velocità 2 avvolgimenti separati – Three-phase double speed 2 separate windings

U1 V1 W1

W2 U2 V2

L3 L1 L2L1 L2 L3

U1

W2 U2 V2

W1V1U1 V1 W1

W2 U2 V2

L3 L1 L2L1 L2 L3

U1

W2 U2 V2

W1V1

1T1

2T2

1T1

2T2

Bassa velocità – Low speed Alta velocità – high speed Bassa velocità – Low speed Alta velocità – high speed

Monofase 4 fili – Single-phase 4 wires Monofase 4 fili con protezione termicaSingle-phase 4 wires with thermal protection

U1 V1 W1

W2 U2 V2

L1 N

U1

W2 U2 V2

W1V1

L1 NU1 V1 W1

W2 U2 V2

L1 N

U1

W2 U2 V2

W1V1

L1 N

1T1

2T2 T1

1T22

Rotazione orariaClockwise rotation

Rotazione antiorariaCounter clockwise rotation



Monofase 3 fili – Single-phase 3 wires Monofase 3 fili con protezione termicaSingle-phase 3 wires with thermal protection

U1 V1 W1

W2 U2 V2

L1 N

U1

W2 U2 V2

W1V1

L1NU1 V1 W1

W2 U2 V2

U1

W2 U2 V2

W1V1

T1 T2 T1 T2





IECEx Certificate of Conformity

INTERNATIONAL ELECTROTECHNICAL COMMISSIONIEC Certification Scheme for Explosive Atmospheres

for rules and details of the IECEx Scheme visit www.iecex.com

Certificate No.: IECEx EUT 14.0001X Issue No: 2 Certificate history:Issue No. 2 (2019-02-08)Issue No. 1 (2017-03-10)Issue No. 0 (2014-03-07)

Status: Current

Date of Issue: 2019-02-08

Applicant: ORANGE1 ELECTRIC MOTORS S.p.A.Via Mantova, 9343122 ParmaItaly

Equipment: Series O-M three-phase and single-phase asynchronous squirrel cage rotor motors,supplied by mains or inverter

Optional accessory: Terminal box and Capacitor box

Type of Protection: Flameproof enclosures "d"; Equipment dust ignition protection by enclosure "t", Increased safety "e"

Marking:Ex db IIC T3, T4 or T5 Gb

Ex tb IIIC T125°C Db

or

Ex db eb IIC T3, T4 or T5 Gb

Ex tb IIIC T125°C Db

Approved for issue on behalf of the IECExCertification Body:

Dionisio Bucchieri

Position: Head of IECEx CB

Signature:(for printed version)

Date:

1. This certificate and schedule may only be reproduced in full.2. This certificate is not transferable and remains the property of the issuing body.3. The Status and authenticity of this certificate may be verified by visiting the Official IECEx Website.

Certificate issued by:

Eurofins Product Testing Italy S.r.I.Via Cuorgnè,

n.21 - 10156 TorinoItaly

Page 1 of 4


Certificate No: IECEx EUT 14.0001X Issue No: 2


Manufacturer: ORANGE1 ELECTRIC MOTORS S.p.A.Via Mantova, 9343122 ParmaItaly

Additional Manufacturing location(s):

This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with theIEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed andfound to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx SchemeRules, IECEx 02 and Operational Documents as amended.

STANDARDS:

The apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was found to complywith the following standards:

IEC 60079-0 : 2011Edition:6.0

Explosive atmospheres - Part 0: General requirements

IEC 60079-1 : 2014-06Edition:7.0

Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures "d"

IEC 60079-31 : 2013Edition:2

Explosive atmospheres - Part 31: Equipment dust ignition protection by enclosure "t"

IEC 60079-7 : 2015Edition:5.0

Explosive atmospheres – Part 7: Equipment protection by increased safety ''e''

This Certificate does not indicate compliance with electrical safety and performance requirements other than those expressly included in the

Standards listed above.

TEST & ASSESSMENT REPORTS:

A sample(s) of the equipment listed has successfully met the examination and test requirements as recorded in

Test Report:

IT/EUT/ExTR14.0001/02

Quality Assessment Report:

IT/EUT/QAR14.0001/03

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Schedule

EQUIPMENT:

Equipment and systems covered by this certificate are as follows:

The three-phase and single-phase asynchronous squirrel cage rotor motors series O-M, are made of aluminium (the paint used has amaximum thickness of 0.2 mm) with separate parts: motor enclosure, terminal box for supply and a capacitor enclosure. The motors aresuitable for Group IIC and IIIC.All the parts of the flameproof enclosures have flameproof joints independent from each other.

The motors can be equipped with auxiliary devices (heaters, thermal protectors).Possibility of supply through inverter exclusively with the use of thermal protectors applied on the windings.Such protectors may be either PTO and PTC and they shall be connected to an appropriate control device conforming to EN 50495.

A more detailed description is given in the annex

SPECIFIC CONDITIONS OF USE: YES as shown below:

Supply voltage must be within:

±5% of the nominal value tor temperature class T5;●

±10% of the nominal value tor temperature class T3 or T4●

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DETAILS OF CERTIFICATE CHANGES (for issues 1 and above):

- Changing of manufacturer's references

- Use of metric threaded plugs in holes of flameproof terminal enclosure with a free internal volume up to 450 cm3 (which is possible formotors from size 63 to size 132)

Annex:

Annex to CoC.pdf

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Index1 About this document1.1 Using the operating and installation instructions1.2 Symbols and markings

2 Use2.1 Proper use2.2 Improper use2.3 Use in potentially explosive areas2.4 Explanations of the explosion protection designation2.4.1 Device groups2.4.2 Device categories for gas2.4.3 Explosion groups2.4.4 Temperature classes2.4.5 Ignition protection type2.4.6 Equipment protection level for gas2.4.7 Special operating conditions

3 Safety4 Technical data4.1 Technical data

5 Design and function6 Transport General

7 Installation and connection7.1 Installing the pump7.2 Aligning the compressor housing7.3 Electrical connection7.4 Pneumatic connection

8 Operation8.1 General8.2 Information on switching the pump on and off8.3 Adjust the flow rate (.29 version)

9 Servicing9.1 Servicing schedule9.2 Cleaning9.2.1 Flushing the pump9.2.2 Cleaning the pump

9.3 Replacing diaphragm and valve plates/seals9.4 Changing the adjusting valve (.29 version)

10 Troubleshooting11 Spare parts and accessories11.1 Spare parts11.2 Accessories

12 Returns13 Appendix13.1 Declaration of Conformity13.1.1 Konformitätserklärung N922 EX

13.2 Motor13.2.1 Betriebsanleitung Motor.pdf13.2.2 Anschlussplan Motor.pdf13.2.3 CE-Erklärung Motor.pdf