0b702tec - Sreii e Srteii (i)

8/13/2019 0b702tec - Sreii e Srteii (i)

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TABLE OF CONTENTS

1. DESCRIPTION_________________________________________________________________ ______________________ PAGE

1.1 GENERAL CONSIDERATIONS____________________________________________________________________________ 01

1.2 WORKING PRINCIPLE_____________________________________________________________________ 01

1.3 CONSTRUCTION CHARACTERISTICS___________________________________________________________________ 011.4 SEALING _________________________________________________________________________________________ 01

2. INTENDED USE____________________________________________________________________________ 012.1 PUMPED GAS___________________________________________________________________________________ 01

2.2 MAXIMUM ALLOWABLE OPERATING CONDITIONS____________________________________________________ 02

2.3 CAPACITY CALIBRATION_______________________________________________________________________ 02

3. STORAGE AND CONSERVATION_______________________________________________________________ 03

3.1 CONSERVATION____________________________________________________________________________________ 03

3.2 STORAGE_________________________________________________________________________________ 03

4. INSTALLATION______________________________________________________________________________________ 03

4.1 GENERAL____________________________________________________________________________________________ 03

4.2 NOZZLES POSITION_______________________________________________________________________________ 04

4.3 COUPLING____________________________________________________________________________________ 04

4.3.1 COUPLING FOR ELASTIC SLEEVES_____________________________________________________________ 04

4.3.2 PERMISSIBLE TOLERANCES OF THE COUPLINGS____________________________________________________ 04

4.3.3 PULLEYS AND BELTS COUPLING_____________________________________________________________ 04

4.3.4 BELT TENSION_____________________________________________________________________________ 054.3.5 COUPLING AND PULLEYS___________________________________________________________________________ 05

4.4 DIRECTION OF ROTATION______________________________________________________________________________ 05

4.5 PIPING______________________________________________________________________________________ 05

4.6 CHECK VALVE____________________________________________________________________________ 064.7 SAFETY VALVE__________________________________________________________________________ 06

4.8 SUPPLY____________________________________________________________________________________ 06

5. STARTUP _________________________________________________________________________________________ 06

5.1. NORMAL__________________________________________________________________________________________ 06

5.2. CONTROLS_______________________________________________________________________________________ 06

5.2.1 DAILY___________________________________________________________________________________________ 06

5.2.2 AFTER THE FIRST 48:00 HOURS____________________________________________________________________ 06

5.2.3 EVERY 500 HOURS_________________________________________________________________________________ 07

5.3 BLOWER SHUTDOWN_____________________________________________________________________________ 07

6. MAINTENANCE____________________________________________________________________________________ 07

6.1 PREVENTIVE MAINTENANCE_________________________________________________________________________ 07

6.1.1 OIL CHANGE____________________________________________________________________________________ 07

6.1.2 RECOMMENDED OIL TYPES____________________________________________________________________ 07

6.1.3 OIL QUANTITY IN THE CRANKCASE_________________________________________________________________ 08

7. TROUBLESHOOTING_______________________________________________________________________ 08

7.1 EXCESSIVE PLAY IN THE BEARINGS_________________________________________________________________ 08

7.2 LOBES TOUCHING THE INTERNAL WALLS OF THE BODY AND EACH OTHER________________________________ 09

7.3 OVERHEATING_______________________________________________________________________________ 09

7.4 CRANKCASE OIL LEAKAGE___________________________________________________________________ 09

7.5 EXCESSIVE POWER CONSUMPTION ____________________________________________________________________ 09

7.6 PUMPED VOLUME REDUCTION_________________________________________________________________ 10

7.7 VIBRATIONS________________________________________________________________________________________ 10

8. DISASSEMBLY AND ASSEMBLY_____________________________________________________________________ 10

9. GENERAL SAFETY STANDARDS___________________________________________________________________ 13

9.1 OPERATING MACHINES___________________________________________________________________________ 13

9.2 BEFORE MAINTENANCE____________________________________________________________________________ 13

9.3 DURING MAINTENANCE__________________________________________________________________________ 13

TABLE OF PLAY _________________________________________________________________________________

TABLE OF PLAY FOR BLOWERS SREII-07 TO 08 AND SRTEII-10 TO 13 _______________________ 14

DRAWING OF PLAYS FOR SREII BLOWER ________________________________________________________ 15

DRAWING OF PLAYS FOR SRTEII BLOWER _______________________________________________________ 16

INSTALLATION SCHEMES OPERATING AS ASPIRATOR____________________________________________ 17

INSTALLATION SCHEMES OPERATING AS BLOWER_____________________________________________ 18

COMPONENTS LIST FOR SREII AND SRTEII BLOWERS ____________________________________________ 19

COMPONENTS DRAWING OF SREII AND SRTEII___________________________________________________________ 20


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INSTRUCTION MANUAL

FOR ROTARY BLOWERS - OMEL

SREII AND SRTEII SERIES

N. : 0B.702.TEC

PG. : 01

Date : JAN/07

1.1 - GENERAL CONSIDERATIONS:. The SREII AND SRTEII series low-pressure rotary blower canbe supplied in the SREHII AND SRTEHII versions with horizontal connections or in the SREVII AND

SRTEVII versions with vertical connections. Both series feature standardized connections

1.2 - WORKING PRINCIPLE: Two rotors, mounted in a suitably sized chamber, turn in oppositedirections and capture, when passing by the blower intake, a certain quantity of gas, which is exactly one

fourth (SREII) or one sixth (SRTE) of their total displacement. This cycle occurs four (SREII) or six

(SRTE) times per revolution, and the volume of gas contained between the wall of the chamber and the lobe

is transported inside the chamber until it reaches the outlet of the machine, located at the opposite side of

the inlet. The volume of gas conducted, practically constant as a function of the variation in pressure, is

proportional to the speed of rotation, and the pressure is that generated by the resistances found in the

installation at the machine outlet.

A pair of synchronized gears generates the rotation movement of the lobes. Since the rotors turn in opposite

directions and against the walls of the blower chamber without friction, there is no need for lubrication, forwhich reason the transportation of the gas occurs entirely free of oil dragging.

The necessary construction clearances are kept very small, in order to reduce losses (slip), but are

compatible with the inevitable expansion caused by the heat generated in the process of compression that

occurs downstream from the machine.

1.3 - CONSTRUCTION CHARACTERISTICS:The lobes in the body are supported on 2 sides in whichthe bearings and sealing elements are mounted. A pair of gears synchronizes the movement of the lobes and

piston ring type labyrinths provide sealing; gas leaks are collected in a common chamber and are discharged

to the atmosphere. Two crankcases mounted on the sides assure lubrication of the bearings and gears.

1.4 SEALING:

Shaft sealing is made: Using piston ring type labyrinth manufactured in special quality cast iron, two being

on the oil side and two on the air (or gas) side for each shaft-end.

The oil sealing between the crankcase and the coupling shaft: is made by high quality retainer.

2 - INTENDED USE

2.1 - PUMPED GAS:The blower is suitable for pumping inert gases, such as air and nitrogen, which are

compatible with the blower material and with the lubricant oil. For gases with different characteristics,

please check with our technical department.

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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 02

Date : JAN/07

2.2 - MAXIMUM ALLOWABLE OPERATING CONDITIONS

MACHINE SPEED (RPM) MACHINE SPEED (RPM) PRESSURE

(mbar)

TEMPERATURE

(t) (C)

SREIIV-0710 4800 SREIIH-0710 4800 800 110

SREIIV-0713 4800 SREIIH-0713 4800 700 110

SREIIV-0720 4800 SREIIH-0720 4800 500 100

SREIIV-0816 3800 SREIIH-0816 3800 900 110

SREIIV-0821 3800 SREIIH-0821 3800 700 100

SREIIV-0831 3800 SREIIH-0831 3800 500 70

SRTEIIV-1027 4800 SRTEIIH-1027 3800 700 100

SRTEIIV-1039 4800 SRTEIIH-1039 3800 500 60

SRTEIIV-1334 3800 SRTEIIH-1334 3800 700 90

SRTEIIV-1348 3800 SRTEIIH-1348 3800 600 70

NOTE: The maximum speeds indicated in the table are the catalog standards, however they may be

increased significantly by consulting our Technical Department.

2.3 - CAPACITY CALIBRATION: There are two conventional ways of doing so.

By means of pulleys and belts (fixed) or by motors fitted with frequency inverter (variable).

Relieving part of the pumped air to the atmosphere by means of a valve placed in a discharge bypass; thisair cannot be re-circulated to the aspiration, since it will cause an excessive increase in temperature. Do

not use the safety valve for this purpose. In case of extreme need, consult our CUSTOMER SERVICE

DEPARTMENT SAC.

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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 03

Date : JAN/07

3 - STORAGE AND CONSERVATION

3.1 - CONSERVATION:

Keep the blower in a dry and protected place.

3.2 STORAGE:

In the eventuality of a long storage period, the internal parts (internal chamber of the body, lobes, flange

faces and shaft-ends) should be sprayed with protective oils to avoid corrosion effects (Twice a month is a

good rule).

INDICATED PROTECTIVE OILS:MOBILARMA 524 (MOBIL)

NOTE: Excess protective oil can be drained by the plug located at the bottom of the body (Horizontal

Nozzles).

The flange protections should only be removed to spray the internal part of the blower, and they should

then be replaced, in order to avoid entry of foreign material to its interior. This measure is indispensable

for the safety of the equipment, since due to the small clearances between the spinning parts (lobes), any

carelessness will be a reason towards the JAMMING of the equipment.

Spray the bearings and gears with preventive oil by removing the vents. Manually turn the shaft from time

to time leaving it always in a different position (weekly is a good rule).

Check the state of conservation every six months in the case of long storage.

4. INSTALLATION (SCHEMES SEPARATE)

4.1 - GENERAL: Blower should be supported on a flat surface and be fastened by its respective anchorsor nuts and bolts. After operation, check their tightening from time to time.

Do not load the blower nozzles with weights, loads, or strains from piping and accessories.

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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 04

Date : JAN/07

4.2 - NOZZLES POSITION: These blowers do not follow the universal assembly, therefore the installationflow should be considered jointly with the blower flow, vertical or horizontal.

4.3 - COUPLING

4.3.1 - COUPLINGS BY ELASTIC SLEEVES: The blower shall be taken as a fixed point for anycoupling adjustment. The driving motor assembled at a slightly lower level shall be adjusted to the correct

height by the use of wedges. The wedge must fully support the weight of each foot.

The space required between the two couplings halves must be carefully maintained. The couplings, in order to

provide perfect functioning, must be tested by the use of micrometric thickness gauges, as shown in figure 1.

The gauges are fastened by the use of convenient devices to one half of the sleeve.

The ends of the micrometric thickness gauges press against the flange of the other half of the coupling sleeve.

Both shafts must turn simultaneously, and the maximum deflection of the gauge needles should be noted.

4.3.2 - PERMISSIBLE TOLERANCES DURING COUPLING ALIGNMENT:

Maximum Radial: 0.05 mm of shaft misalignment (0.1 mm over a complete revolution). If possible keep it

under 0.03 mm.

Maximum Axial: 0.05 mm of shaft misalignment over a complete revolution. If possible keep it within 0.03

mm.

4.3.3 - PULLEYS AND BELTS COUPLING:Pulley couplings must be previously aligned by the use of aline or an iron ruler. The parallelism between the shafts is assured, if the line, tightly stretched between the

pulleys, touches them at points A, B, C and D, forming a straight line (see figure 2).

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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 05

Date : JAN/07

4.3.4 - BELT TENSION: The pre-tension to be applied will depend on the flex allowed by the belt. The sagof the belt must be approximately 1 mm for each 100 mm of belt length not directly supported on pulleys .

4.3.5 - COUPLING AND PULLEYS:

Before assembling the couplings and pulleys, wipe off any traces of antirust protection from the shaft-end.Removal and/or installation should only be done with suitable devices, which should be applied againstthe shaft center marking hole. Lubrication of the shaft with oil or molybdenum disulfide (molykote) willease the assembly, as well as any disassembly that may eventually be required.NOTE: Follow the reverse sequence of assembly to disassemble the equipment, taking care to remove thecomponents without hitting or jerking them, in order to avoid damage to the parts.

4.4 - DIRECTION OF ROTATION:

Looking at the machine from the motor side, the direction of rotation shall be counter-clockwise and theflow from left to right for H blowers and from up to down for V blowers

4.5 - PIPING:

The diameter of the main pipes should be chosen in order to achieve gas speeds between 15 and 25 m/s.The piping diameters should never be smaller than the diameter of the blower nozzles.

Different diameters should always be connected by means of conical reductions.

The weight of the discharge/aspiration piping and the thermal expansions should not create stresses on theblower nozzles. Always fit the assembly with expansion joints.

Pipes should always be clean and their fittings should not penetrate them.

Whenever possible, always install a temporary filter in the aspiration piping, at least during the first 100hours of operation.

The installation of a vacuum gauge at the inlet line should be planned to control the saturation of thefilters.

When the vacuum reaches 20 mbar (or approximately 200 mm of water column) the element of the suctionfilter should be cleaned or replaced.

The mufflers should be mounted directly on the blower nozzles. Next, mount the expansion joint andsupport on the piping, at the point closest to the expansion joint. The mufflers should be supported so as

not to force the blower nozzles.

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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 06

Date : JAN/07

4.6 - The check valve is used to prevent rotation in the wrong direction in case machine is stopped underpressure. Install it at the outlet when the blower operates under pressure and at the suction when it operatesunder vacuum.

4.7 - The safety valve limits the operating pressure of the machine. Install it at the discharge or at the aspirationfor operation, respectively, under pressure or vacuum. Warning: Safety valves should be installed close to theblower nozzles, and with no closing valves before the safety valve.

4.8 - The electrical installation should be done only by specialized technicians. Control the voltage, frequency,number of phases and current absorbed on the motor plate.Follow the indications of the motor plate to make the connections. Size the cables in function of the motorsrated current. Protect the motor properly by means of circuit breakers calibrated at the value of the rated current.

Do not forget that the entire installation must be grounded to protect the operators. Warning: any bloweroperation should be done with the previous shutdown of the supply circuit voltage.

5 - STARTUP

5.1 - NORMAL

1 Open the water valve if the blower has crankcase cooling.2 Startup: With direct startup the motor will start even at maximum counter pressure.

With star-triangle startup the pressure should be null.3 Avoid starting up the machine with the installation pressurized.

5.2 PERIODIC CONTROLS

5.2.1 - DAILY: CONTROL

Discharge temperature Discharge pressure or aspiration vacuum Power absorbed.

Flow of coolant liquid Condition of the aspiration filter Functioning of the safety valve

5.2.2 - AFTER THE FIRST 48 HOURS: With the blower stopped, control: Oil level Eventual oil leaks Belt tension Eventual leaks in the auxiliary lines Tightening of the bolts that fasten the blower to the base and the base to the foundations. Functioning of the safety valve.

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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 07

Date : JAN/07

5.2.3 - EVERY 500 HOURS: With the blower stopped, control: Oil level Viscosity and state of the oil Wear of the belts Coupling sleeve element Auxiliary circuits Tightening of the bolts that fasten the blower to the base and the base to the foundations State of the alignment State of the aspiration filter Functioning of the safety valve.

5.3 - BLOWER SHUTDOWN

Depressurize the machine whenever possible. Cut off the power supply. The machine may be shutdown even with its line pressurized, but due to

the high current absorbed, the electric circuit might experience problems.Warning: Control the shutdown of the blower, as it should be uniform and vibration free.

Close the eventual auxiliary cooling circuits.

6 MAINTENANCE:

Before starting any maintenance operation, stop the blower according to the paragraph SAFETY

STANDARDS.

6.1 - PREVENTIVE MAINTENANCE

6.1.1 - OIL CHANGE:

Remove the oil after 500 hours of operation from the first startup. The successive changes are made at

every 4000 hours of operation. Reduce this period for environments with lots of dust.Warning: The oil level should be at the middle of the visor with the machine shut down.

6.1.2 - RECOMMENDED OIL TYPES::

Mineral oils of good quality, chemically neutral, stable and with a high degree of resistance to agingshould be used. We recommend the use of oils with viscosity below that of the SAE 90 standard foroperating temperatures up to 110C.

!

WARNING

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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 08

Date : JAN/07

LUBRICATION RECOMMENDATIONS

1 Normal Conditions: Use Oil ISO-VG-150 for: 2 Specific conditions:Use Oil ISO-VG-220 for:1.1 Oil temperatures up to 80C

1.2 Compression ratio up to 1.7

1.3 Gas temperature at the machine outlet up to110C1.4 Room temperature up to 35C

2.1 Oil temperatures up to 110C2.2 Compression ratio over 1.7

2.3 Gas temperature at the machine output over110C2.4 Room temperature over 35C2.5 Machines installed inside acoustic cabins.

SOME SUGGESTED OILS

VG 150 VG 220

PETROBRSTEXACOESSOMOBILOIL*SHELL

MARBRAX - TRREGAL R&OTURBINE - OILDTE - EHMORLINA

150150150

150

PETROBRSTEXACOESSOMOBILOIL*SHELL

MARBRAX - TRREGAL R&OTURBINE - OILDTE - BBMORLINA

220220220

220

IMPORTANT NOTES:

a) An oil with an additive that has a propensity to attack silicon or nitrile rubber should in no case be used.b) The blowers are supplied with crankcases without oil. They should be filled according to item 4.2.2 before

starting operation.c) The maximum oil level in the crankcase is at the center of the visor with the blower stopped..

6.1.3 - QUANTITY OF OIL IN THE CRANKCASE:

MODEL QTY AT THE DRIVE SIDE (liters) QTY AT THE SIDE OPPOSITETHE DRIVE (liters)

SREIIV-07 0.37 0.95SREIIH-07 0.26 0.38SREIIV-08 0.62 1.10SREIIH-08 0.38 0.80

SRTEIIH-10 0.42 1.30SRTEIIV-10 0.74 1.55SRTEIIH-13 0.85 1.65SRTEIIV-13 1.35 2.35

7 - TROUBLESHOOTING

7.1 - EXCESSIVE PLAY IN THE BEARINGS:

The only way to check the play in the bearings is to remove them from the blower. Remove from the shaft andmeasure the movement. When in good condition, the tolerance is equal to the C2for SREII-07 and 08 models and C3for SREII AND SRTEII-10 and 13 models. Excessive play can cause the lobes to touch the inside of the body of theblower or each other.

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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 09

Date : JAN/07

7.2 - LOBES TOUCHING THE INTERNAL WALLS OF THE BODY AND EACH OTHER:

Can occur in two ways:

7.2.1 Due to an overload caused by excess pressure that creates a deflection of the shaft. Check thecurrent operating pressure and temperature conditions and compare with the conditions initiallyspecified.

7.2.2 Due to imbalance of the lobes caused by irregular accumulation of dirt or residues on the surface(dust or solid material). Examine the internal parts to check if the eventual contact has caused splits orcracks. Clean the lobes with a suitable solvent.Next, check their concentricity and possible deflection of the shaft.

7.3 - OVERHEATING:

7.3.1 Excessively high compression temperature due to excess differential pressure. Each 0.1 kgf/cm2

(1.0 m w.c. or 1.42 lbf/In2) corresponds to an increment of approximately 10C in temperature. Alsocheck the aspiration temperature.

7.3.2 Clogging of the inlet filter increases the aspiration resistances, reducing volumetric efficiency andcausing increase in temperature (maximum load loss allowed = 200 mm w.c.). The filtering elementshould be cleaned or replaced if this load loss limit is exceeded.

7.3.3 Excess oil in the crankcase or high oil viscosity creates additional friction resistances, resulting incrankcase overheating.

7.3.4 Insufficient room ventilation causes an increase in temperature, due to heat dissipation of theblower itself.

7.3.5 Excessive play between the lobes reduces volumetric efficiency, causing increase in temperature(natural wear and corrosion cause these excessive plays). In these cases, send the blower to our plant forchecking.

7.4 - OIL LEAKAGE IN THE CRANKCASES:

7.4.1 Too high an oil level can cause internal leaks when the blower starts operating. These possibleleaks may be worsened with the increase in temperature.

7.4.2 Wear or rupture of the retainers, which in this case should be replaced.

7.5 - REDUCTION IN THE PUMPED VOLUME:

7.5.1 Incorrect speed. Check the installation and plate and motor data. Measure the speed of rotation.

7.5.2 Excess play between the lobes, in which case they should be replaced.

7.5.3 There could be a reduction of volumetric efficiency due to clogging of the filters installed at theinlet of the blowers. Therefore clean or replace the filters whenever required.


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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 10

Date : JAN/07

7.6 - EXCESSIVE POWER CONSUMPTION:

7.6.1 Lobes touching the internal walls of the body or each other.

7.6.2 Differences in the operating conditions of the blower and the electrical characteristics of the motorwith respect to their specification, principally if related to rotation.Thus, immediately tell us of the occurrence of any change, principally to rotation and pressure.

7.7 - VIBRATIONS:

7.7.1 Misalignment of the couplings.7.7.2 Friction between the lobes and the internal parts of the body or between each other.7.7.3 Bearings or gears with problems or wear.

In this case replace them.7.7.4 Imbalance of the lobes.

They should be rebalanced or cleaned.7.7.5 Loose fixing bolts or studs retighten them.7.7.6 Critical resonance in the piping.

Check the design of the lines.7.7.7 Pulleys with excess play.

Stretch

8 - DISASSEMBLY AND ASSEMBLY

The user should not disassemble equipment in warranty because it will void the warranty. If required, employ only qualified personnel and with suitable tools. This manual supplies only

instructions for regular maintenance. See the drawings and attached lists for references of thecomponents.

The warranty will not cover damages caused by improper assemblies/disassemblies of the blower or bynon-qualified personnel.

8.1 The disassembly follows a logical sequence that qualified personnel are able to follow.

8.2 Since the assembly sequence is more complex, it is described below.

8.2.1. Check that every item is clean, free of burrs and dents made by light hits, principally on the bearingsupports (pos. 2 and 40) and the sealing faces of the crankcases (pos. 7 and 95).

8.2.2. Place the bearing support, drive side (pos. 2) horizontally on a trestle.


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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 11

Date : JAN/07

8.2.3. Assemble the lobes taking due care to not invert the position. The drive lobe should always be onthe of the blower foot, in the H mounting version, that is, horizontal flow. And in the V verticalversion (vertical flow) of the left side looking towards by the driving shaft.

8.2.4. Assemble the bearing support on the side opposite the drive (pos. 40). Fix the support with at least4 duly spaced tie rods.

8.2.5. Insert already pre-assembled labyrinths (pos. 197 + labyrinth rings pos. 200).

8.2.6. Measure the clearance existing between the labyrinth seating (pos. 197) and the bearing seating (pos13) in the bearing support (pos. 40).

8.2.6.1. The dimension found there should be the F6 gap, otherwise compensate the dimension of thelabyrinth (pos. 197). It is always recommendable to add the maximum gap in order to compensate the

stresses when the set is blocked.

8.2.6.2. Insert the retainers (pos. 48).

8.2.7. Assemble the bearings (pos. 13) with the help of a hydraulic cylinder that should be fixed with a boltor tie rod, threaded on the thread existing on the shaft-end.

8.2.7.1 Note that the blocking is correct, seating at the bottom with the bearing support (pos. 40) andlabyrinths (pos. 197).

8.2.8. Invert the assembly and remove the bearing support (pos. 2).

8.2.9. Couple the blower body (pos. 1) applying a layer of Loctite 574 between the body and the bearingsupport.

8.2.10. Assemble the bearing support on the drive side (pos. 2), fixing it to the body with bolts (pos. 173)and nuts (pos. 153).

8.2.11. Insert the labyrinths (pos. 197) + labyrinth rings (pos. 200) of the driven side.

8.2.12. Assemble the bearings (pos. 97) with the help of a hydraulic cylinder.

8.2.13. Fix the washer (pos. 171) with a pressure washer (pos. 227) and bolt (pos. 175).

8.2.14. Put and assemble the gland disc (pos. 199). Fixing it between the nuts (pos. 15).

8.2.15. Apply a layer of Loctite 574on the sealing face between the crankcase and the bearing support.Couple the crankcases on the drive side (pos. 95) + retainer (pos. 103), guide by the guide-pins (pos. 110)already pre-assembled.

8.2.16. Fix the crankcase with the bolts (pos. 173) and nuts (pos. 153).


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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 12

Date : JAN/07

8.2.17. Place the machine in the horizontal position.

8.2.18. Assemble the gear spacing rings (pos. 124).

8.2.19. Assemble the left gear (pos. 8) of the drive lobe (pos. 51), until it touches the spacing ring (pos.124).

8.2.20. Assemble the right gear (pos. 20) of the driven lobe (pos. 50). Manually synchronize the gearwith the (pos. 8).

8.2.21. Assemble the set of lock rings (pos. 230), noting its assembly position on the driven shaft.

8.2.22. Fix the tightening flange (pos. 226) on the driven shaft with bolts (pos. 228 and 152) and theirwashers (pos. 227). With the help of wooden wedges placed between the gears, tighten each bolt to lock

the gear on the shaft according to the table below.

Blower Pos 228 (N.m)

SREII-07SREII-08

SRTEII-10SRTEII-13*

170300

300550

*In equipments with old serial number, that bolts 228 are 5/8, applied torque must be 300 N.m.

8.2.23. Assemble the set of lock rings (pos. 230), noting its assembly position on the drive shaft.

8.2.24. Assemble the tightening flange (pos. 226) fixing (without tightening) with the bolts (pos. 227), andtheir washers (pos. 227).

8.2.25. With a thickness gauge, check the gaps: F1, F4, F5, F6, F7 and F8, which are fixed andconsequently automatically generated after the closing of the set.The F2 and F3 gaps may experience slight adjustments. If required, turn drive shaft, where gear (pos. 8) isloosen. Check the synchronism and tighten drive side bolts (pos 228) to guarantee a tightening torqueaccording to the table of item 8.2.23.

8.2.26. Assemble the crankcase on the side opposite the drive side (pos. 7), noting that the sealing face

should be very clean and with a layer of Loctite 574.

8.2.27. Fix the crankcase with the bolts (pos. 173) and nuts (pos. 153).

8.2.28. Assemble the shaft protection sleeve (pos. 125), fixing it with bolts (pos. 128), distributing thetightening stresses uniformly. Couple the retainer (pos. 48).

8.2.29. Assemble the plugs (pos. 304) and the oil visor (pos. 27).

8.2.30. Assemble the key (pos. 32).


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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 13

Date : JAN/07

9 - GENERAL SAFETY STANDARDS

9.1 - OPERATING MACHINES:

Do not touch the external surface of the machine since it can reach temperatures that can cause burns.

Never put your hands inside the nozzles since the lobes can cause severe physical injuries.

Do not get close to coupling elements for the same reason explained above. Provide suitable protection

for the couplings.

If the blower operates with open nozzles, do not get close to the aspiration and do not stand in front of

the air flow at the discharge.

Do not open the oil plugs.

Do not damage or deactivate the safety devices.

Do not get close to the discharge of the safety valve.

Avoid long exposure to blower noise without suitable ear protection, since the level of sound pressure

close to the machine can exceed 85 dB(A).

9.2 - BEFORE MAINTENANCE:

Stop the machine by shutting off the power supply.

Disconnect power supply cables and/or activate the safety device.

Take the internal pressure to the atmospheric pressure.

9.3 - DURING MAINTENANCE:

Make sure the tasks indicated in item 9.2 were performed.

Use suitable tools to disconnect and move piping, disassemble the accessories and move the machine,

remembering the weight of its main parts is not insignificant.

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PLAYS OF OMEL BLOWER

MODELS SREII-07 TO 08 AND SRTEII-10 TO 13

N. : 0B.702.TEC

PG. : 14

Date : JAN/07

MODEL F1 F2 F3 F4 F5 F6 F7 F8

SREII-07100.13/0.15 0.12/0.15 0.15/0.18 0.08/0.12 0.08/0.12 0.08/0.10 0.15/0.26 0.08/0.12

SREII-0713

SREII-0720

SREII-08160.18/0.21 0.15/0.18 0.18/0.20 0.09/0.16 0.09/0.11 0.15/0.26 0.15/0.26 0.09/0.16

SREIII-0821

SREII-0831

SRTEII-10270.20/0.25 0.14/0.20 0.23/0.35 0.17/0.22 0.05/0.18 0.08/0.13 0.20/0.24 0.11/0.17

SRTEII-1039 0.20/0.24

SRTEII-13340.24/0.32 0.16/0.22 0.32/0.42 0.22/0.29 0.08/0.12 0.12/0.16 0.26/0.30 0.18/0.24

SRTEII-1348 0.35/0.41


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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 17

Date : JAN/07

Installation Scheme:

Operating as an Aspirator

ACCESSORIES MUST BE SUITABLE AND

SUPPORTED

!WARNING


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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 18

Date : JAN/07

Operating As a Blower:

POS. DENOMINATION

1 SREII AND SRTEIIII BLOWER

2 SALN MUFFLER3 SALL MUFFLER

4 SRLN MUFFLER

5 EXPANSION JOINT

6 TEE

7 SAFETY VALVE

8 VACUUM METER

9 CHECK VALVE

10 PRESSURE VACUUM METER

11 REEL

12 FILTER

ACCESSORIES MUST BE SUITABLE AND

SUPPORTED

!WARNING


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INSTRUCTION MANUAL



N. : 0B.702.TEC

PG. : 19

Date : JAN/07

COMPONENTS LIST

MOD. SREII AND SRTEII BLOWER

1 BLOWER BODY2 BEARING SUPPORT DRIVE SIDE

7 CRANKCASE SIDE OPPOSITE DRIVE SIDE

8 HELICOIDAL DRIVE GEAR

13 BEARING

15 LOCK NUT

20 HELICOIDAL DRIVEN GEAR

27 OIL VISOR

32 COUPLING KEY

39 GUIDE PIN

40 BEARING SUPPORT OPPOSITE SIDE

48 RETAINER

50 DRIVEN LOBE

51 DRIVE LOBE

90 HEXAGONAL HEAD BOLT

95 CRANKCASE DRIVE SIDE

97 CYLINDRICAL ROLLER BEARING

124 GEAR SPACING RING

125 SHAFT PROTECTION SLEEVE

128 HEADLESS ALLEN BOLT


153 HEXAGONAL NUT

170 PLAIN WASHER HEAVY SERIES 5/16 (ASA B272)

171 LOCK WASHER


175 ALLEN BOLT WITH CYLINDRICAL HEAD197 LABYRINTH

199 SUB SET OIL DEFLECTOR

200 LABYRINTH RING

220 PLUG

226 LOCK RINGS TIGHTENING FLANGE

227 PRESSURE WASHER

228 ALLEN BOLT WITH CYLINDRICAL HEAD

230 LOCK RINGS

298 OIL VENT

301 BEARING SUPPORT PLUG

302 BODY PLUG

303 BODY FLANGE PLUG

304 CRANKCASE PLUG


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Documents

0b702tec - Sreii e Srteii (i)