Field Issues: 30 Series Packaged Chillersdocshare01.docshare.tips/files/14470/144702295.pdf · eliminating the need for the timer (RRT) and contactor (RRC). −If voltage drops below

Field Issues:

30 Series

Packaged Chillers

Woody Clark Syracuse, NY

NE Regional Service Managers Meeting 2008

General Topics

• 30RAN Aquasnap Field Issues

• 30RB Aquasnap Field Issues

• 30XA Aquaforce Field Issues

• 30GX/HX Field Issues

30RAN Aquasnap Field Issues

• Two-Speed Fan Motor w/MMV

• Low Ambient Operation

• Chilled Water Strainer

30RAN Two-Speed Fan Motor w/MMV

– High failure rate experienced when used with MMV.

– GE single speed 1140 rpm fan motor will replace Leroy-Somer dual speed 1140/570 rpm motor for use with MMV.

– SSN 4207Qnnnnn units ordered with the Motormaster FIOP will ship with the new motor.

– Will continue to use 5 hp MM-V with this motor.

New GE Fan Motor

Leroy-Somer

• 30RAN010,015,018,035 & 040 utilize two-speed condenser fan motor.

30RAN Two-Speed Fan Motor w/MMV

• Units can be converted in the field. – GE single speed 1140 rpm fan motor is available from RCD.

– New mounting brackets will be required. • Qty (4) - 30RA402081

– 5 hp MM-V is required with this motor.

• Refer to PMB08-007

• Field Installed Motormaster V Accessory Kits have recently been updated to include single speed motor.

– Previously single speed motor had to be purchased separately for field installation. This was not clear to Sales Engineers.

Manufacture 575/3/60 380/3/60 208-230/3/60 460/3/60

Original (Leroy-Somer) HD56AZ576 HD56AZ380 HD56AZ651 HD56AZ460

Replacement (GE) HD56AK578 HD56AK382 HD56AK656 HD56AK656

30RAN Low Ambient Operation

• Reports of multiple compressor failures during low ambient

operation.

– Replace Danfoss TXV’s with Sporlan TXV’s

– Install liquid line solenoid valve(s).

• Solenoid p/n EF23JM272, 7/8 x 7/8 ODF

• Coil p/n EF19ZE024, 24vac

• Auxillary contacts p/n 3RH19211EA11 one required for each

compressor

– CCH required.

• Standard on units produced SSN2304Fnnnnn

– Install new MLV accessory p/n 30RA-900---030.

• Standard on units produced SSN 3807Qnnnnn

– Configure MMV parameter P34 to 21.0 on sizes 022-055.

– Update software to Version 5.0



Liquid line solenoid valve wiring Partial Schematic

30RAN Chilled Water Strainer

• Complaints of current #20 mesh

strainer collapsing under high

pressure differential plugging BPHE.

– Current strainer p/n:

• KH14BW001 (2”)

• KH14BW010 (2 ½”)

• New strainer will be #40 Mesh with

1/8” Perforated Plate.

– New strainer p/n:

• KH14HZ102 (2”)

• KH14HZ104 (2 ½”)

• Will be implemented 4th qtr.

Current Strainer (#20 Mesh)

New Strainer (#40 Mesh)

30RB Aquasnap Field Issues

– Compressor Failures

– Medium Temperature Brine

– High Motor Temperature Alarms

– Filter Driers

– MCHX

– Software

30RB Compressor Failures


• High Differential Pressure/Low Suction

– Currently number one failure mode

– Primary cause is compressor contactor welding

• Units produced starting 0107Qnnnnn added voltage monitor

relay and contactor to prevent contactor chattering.

− Reaction time of voltage monitor relay is 300 milliseconds.

This is too slow to prevent chattering.

• Units produced starting 0108Qnnnnn have updated scroll

protection modules (SPM).

− Monitors 24 vac control voltage to SPM through the HPS

input. Shuts off compressor during low voltage situations

eliminating the need for the timer (RRT) and contactor (RRC).

− If voltage drops below 16.5 vac for 80 ms compressor output

will turn off and alarm generated.

New Version of Scroll Protection Module



• Two additional SPM alarms have been added.


• High Differential Pressure/Low Suction (cont’d)

– New SPM is backward compatible.

– Reverse rotation contactor (RRC) and reverse rotation timer

(RRT) were eliminated.

Timer &

Contactor

Phase

Monitor


MBB To All Controls

Set Primary Voltage


MBB

Set Primary Voltage

RRT & RRC Removed


– Beginning 1308Qnnnnn 460v

units were produced with the

Siemens 3RT10441AC20

(65A) contactor which replaced

the original Siemens

3RT10351AC20 (40A)

contactor.

– No changes made to the

208/230v or 575v units

– Manually depressing IEC style

contactors will cause them to

weld.

Warning label added

SSN 4007Qnnnnn

•High Differential Pressure/Low Suction (cont’d)


– Recently I have received reports of 208/230v units

welding contactors.

– Power monitor voltage setting may not have been

properly set. 230v instead of 200v.

– People have witnessed contactors dropping out and

then immediately picking up.

– One second time delay may not be long enough.

– 100 second time delay is now setup at RCD. Part

number 3RT1916-2CG31 (5-100 sec.) replaces

3RT1916-2CG11 timer included in the rework kit

and standard on units on units produced in 2007.

– Report any occurrences encountered.

•High Differential Pressure/Low Suction (cont’d)

30RB High Motor Temperature Alarms

• Motor Protection Scheme

– Total of four PTC

thermistors connected in

series protect motor

– Steep curve in trip area –

resistance rises quickly

• SPM board trips at greater

than 4.5 kΩ and resets

below 2.5 kΩ

– A 1K resistor connected to

the SPM may be used to

temporarily bypass the PTC

for troubleshooting

30RB High Motor Temperature Alarms

• Nx.01 Motor Temperature Too High & Nx.04 Motor

Sensor PTC out of range Alarms

– Motor Temperature Too High alarms are generated when Motor

Sensor is actually out of range

• Typically caused by loose connections

• Check connections on compressor and connector on SPM. Use

dielectric grease. Connector may have to be replaced.

• Replacement SPM’s will come with dielectric grease.

– Motor Temperature Too High alarms are generated when

compressor is seized.

• This is the compressor overload protection. PTC temperature rises

rapidly shutting off compressor.


• All compressor failures are analyzed by Danfoss. – Fill out compressor failure checklist

– IMPORTANT: PLEASE FAX THIS FORM TO 860-998-2135 AND RETURN FORM WITH THE FAILED COMPRESSOR

• Checklist provided with replacement compressor. Also available on HVAC Partners.

• Need to receive a checklist for every failure.


• Flooding

– Units with glycol in the chilled water system for freeze

protection have to be configured for brine

(Configuration>SERV>FLUD=2).

• P.40,41,42 - Repeated Low Suction Temperature Override

– Brine freeze setpoint should be set to the freeze point of the

antifreeze solution. (Configuration>SERV>LOSP).

• Default has been increased from 14°F to 34°F.

– Don’t be afraid to raise the superheat setpoint if flooding is

witnessed (Configuration>SERV>SHP.x). Default is 7.2°F.

• Increasing the superheat to 10°F or 12°F will help.

• You should not see foaming in the oil level sightglass during

steady-state operation.

• Discharge superheat should be approximately 30°F or higher.


• Flooding

– Check accuracy of thermistors and transducers. Have received

reports of inaccurate readings which may affect superheat

control.

HPS ENRV SPT

SGT


• Flooding

– Check compressor oil level.

• If oil level is too high logging may occur in the cooler.

• Approach (LWT-SST) will be high >15°F.

• This may occur as the result of replacing a compressor.

Factory oil charge

is 7/8 glass.

Normal operating

level is ½ to full

glass.

View oil sight

glass

• SMB07-0014 was issued to update units in the field in

areas that were experiencing higher than normal

compressor failures.

– Not all units are included in this SMB.

– The SMB will be reissued to include units produced prior to

0107Q and shipped to high risk areas.

– Units produced prior to 0107Q not listed in the SMB should be

updated if frequent power outages or welded contactors are

encountered.


• Reports of plugged liquid line filter driers

– P.40,41,42 - Repeated Low Suction Temperature Override

– Nitrogen not being used during brazing

– Drier cores not properly assembled

– Loose wing nuts

30RB Filter Drier

• Recommending changes to the current filter drier

assembly.

– Proper location of gaskets

– Better outlet gasket

– Wing-nut with lock washer

30RB Filter Drier

Current assembly Revised assembly Fender washer &

lock washer added

30RB MCHX Condenser Coil

Micro-Channel Condenser


• Refrigerant leaks – Have received reports of

leaks around flange connections.

– Investigation has determined that nuts are not properly tightened.

– Torque Nuts to 12 ft-lbs +/- 3.

– Has not been necessary to replace EDPM washer.


• Refrigerant leaks

– Have received reports of leaks in face and header.

• Header leaks are typically manufacturing issues.

• Leaks on the face of the coil may be due to

manufacturing, handling or corrosion.


• Points of interest

– Top and bottom tubes are

inactive serving as

reinforcement.

• The cuts are designed to

prevent any failures in the

event that there is a significant

amount of thermal expansion

or contraction between the

parts.

– DO NOT USE a razor knife

to remove protective cover.


• Refrigerant leaks – If a leak occurs in the face of

the coil it can be repaired in the field.

– All DOA coils should be replaced and returned for analysis.

– Be aware of corrosion issues. Coastal and Industrial corrosion are primary concern.

– New Coil Selection Guidelines are soon to be released.

– E-Coat MCHX is being tested.

Repair / Replacement

RCD Repair Kit

50TJ660007

Coil Replacement

Non-corrosive flux

Repair Wire

316 SS Mask set

Replacement Center

Instant Adhesive


• Units with MCHX

condenser coils are very

sensitive to refrigerant

charge.

• One (1) pound can make the

difference between starting

or tripping on high pressure.

• Factory refrigerant charge

has been adjusted to allow

startup without generating

high pressure alarm.

• More work needed. Let us

know what you experience.

30RB MCHX Refrigerant Charge

30RB

MCHX Refrigerant Charge [lbs]

Unit

Size

A B C Total

Old New Old New Old New Old New

60 48 43 22 21 - - 70 64

70 59 43 22 21 - - 81 64

80 36 34 36 36 - - 72 70

90 51 43 40 43 - - 91 86

100 51 43 51 45 - - 102 88

110 51 46 61 56 - - 112 102

120 51 46 76 61 - - 127 107

130 71 58 61 57 - - 132 115

150 71 60 74 66 - - 145 126

160 86 86 61 59 - - 147 145

170 86 86 77 68 - - 163 154

190 86 86 93 93 - - 179 179

210 71 63 61 57 82 68 214 188

225 71 63 76 63 82 68 229 194

250 71 63 76 63 100 95 247 221

275 86 86 93 93 82 72 261 251

300 86 86 93 93 100 100 279 279

• Med Temp Brine Option (+15°F to +40°F)

• 30RBA060-100

- Special modifications not required

• 30RBA110-390

- Units with 3 or 4 compressor/ckt.

- Oil return issue at min. capacity

- Cooler has a special pass partition plate

- Hot Gas and Liquid Line solenoids added

to reduce condenser capacity under light

loads on 120 ckt B and both ckts 130 and

up.

- Special fan control routine

• MLV option not available with Brine Option

30RB Medium Temp Brine



If unit is configured for fluid type = Brine

Hot Gas Bypass Control (MLV) will not function

30RB Low Ambient Head Pressure Control

• Siemens Micromaster VFD Issues

– Field installed accessory and

replacement drives are not shipped

programmed.

• Follow instructions in Controls and

Troubleshooting Guide 30RB-2T to

commission drive.

– FIOP may not have proper fan motor current

programmed.

• Drive may ramp up and down quickly.

• Check motor nameplate (not unit

nameplate) for correct value.

30RB Software Change Summary (1)

• Version 2.00 key changes: SSN 2906Q

– Reduced occasional loss of configuration (rare).

– Fixes loss of communication with SPM issue (rare).

– “Black box” data management improved.


• Version 2.01 key changes: SSN 4406Q – If the motor temperature sensor is open circuited, alarm Nx.04

(Compressor Motor Sensor PTC Out of Range) will always be declared. Previously sometimes Nx.01(Compressor Motor Temp Too High) would be declared.

– Nuisance suction pressure transducer faults Pr.04, Pr.05, Pr.06 with the Minimum Load Valve Option have been addressed by delaying activation of the HGBP valve for 1 min. until the drop in suction pressure has been tested for.

– If saturated suction temperature is low, a compressor will not be permitted to run in Service Test.

– In order to capture Black Box data in the case of welded compressor contacts, the low SST alarms P.05, P.06, P.07 will now be declared even if a compressor is not running (per the control).

• Version 3.01 key changes: SSN 1707Q – Added welded contactor detection and management

• Welded contactor alarm is generated (Ct.01,Ct.02,Ct.03)

• EXV and Fan control shall go back to normal operation

• Unit shall shut down and remain at 0% capacity

• Cooler pump shall be controlled to ON

– The welded contactor management is cancelled if one of following conditions occur

• Cooler flow switch failure

• High pressure trip

• Cooler freeze protection alarm

– Modified “Black Box” data management

• PCDCT ver. 1.5.3 or higher required

– Improve compressor operating envelope protection.

– Improve Dual Chiller control

• If compressor is disabled algorithm will correctly declare it unavailable and allow lag chiller to start.


• Version 4.00 key changes: (Service Release Only) – Improve fan control especially to ensure correct SST at OAT below

57°F

– Correct a bug on fan controls introduced in version 3.01 which could cause fan cycles at low OAT

– Added configuration parameters for MCHX exchanger, desuperheater option and Danfoss VFD configuration

• Desuperheater and Danfoss VFD is not offered at this time

– Added ability to “force” pump operation from Scrolling Marquee

– Brine freeze setpoint default value is 34°F instead of 14°F


• Version 4.01 changes: (SSN 4407Q) – Added several config items Scrolling Marquee Display

• VLT FAN DRIVE SELECT (Not Supported)

– Configuration>UNIT>VLT.S = 0

• VLT FAN DRIVE RPM (Not Supported)

– Configuration>UNIT>RPM.F = 0

• MCHX SELECT (Must be configured to YES if unit has MCHX)

– Configuration>UNIT>MCHX = YES

• ATTACH DRIVE TO FAN x (x = Ckt. A,B,C)

– Configuration>SERV>AVFx = NO

– Added SP transducer failure condition to welded contactor logic.



• Version 5.01 changes: (SSN 3308Q) – Added dual speed fan parameter in FACTORY configuration

• This configuration is not supported.

– Corrected issue with P.14 flow switch alarm not being displayed when alarm occurred.

– Added minimum cooling setpoint parameter in SERVICE configuration for brine application.

– Improvement for MCHX application to avoid high pressure trip.

– Superheat setpoint default has been raised from 7.2°F to 9.0°F.

• Currently field testing Version 5.02 – Complaints of P.16 thru P.27 Compressor Not Started or Pressure

not established alarms. • Reduced threshold for compressor startup detection from 10 PSI to

3 PSI at start if EWT < 50°F.

30XA Aquaforce Field Issues

• Cooler Heater Failures

• Oil Separator Heater Failures

• Compressor will not start

• Software Issues

30XA Cooler Heater Failures

• Symptoms and Conditions: – Cooler Freeze Protection alarms

– Cooler Freeze-up on units not winterized or without glycol

• Root Cause – Cooler heater failure due to high watt density

• Heaters overheat and burn out (fail open)

• Heaters are rated for 500w @ 120v

• Nominal heater resistance is 28.8 +/- 1.4 ohms

– Oil Separator Heaters are also affected

• Same part as cooler heater

• Less failures due to the separator not being insulated


• Solution

– Beginning with s/n 1007Qnnnnn units were being shipped with 2

500w cooler heaters wired in series.

• In this configuration power is reduced to 125w for each heater

• Coolers have either 2 or 4 heaters depending on unit size

• Pump control accessory is being factory installed

• A letter is being sent to all sales offices identifying the addition of the

pump control accessory and stating that cooler freeze protection below

25°F will required pump control if the system is not protected with

antifreeze

• A stuffer will also be included with the units identifying the wiring

change and pump control requirements


• Solution – Beginning with serial number 2607Qnnnnn a new style belly band

heater has been incorporated.

• Each heater is rated at 400 watts vs. 500 watts previously.

• The new cooler heater design provides freeze protection to 0°F is without pump control and to -20°F with pump control.

– SMB07-0048 announced a rework

program to install insertion heaters

which will be located in the cooler

heads similar to the 30GX cooler

heaters.

– SMB08-0018 announced a rework

program to inspect units for possible

wiring error.

30XA Oil Separator Heater Failures

• Symptoms and Conditions:

– Low oil level alarms

– Compressor Locked Rotor alarms

• Root Cause

– Heater failure due to high watt density

• Same part as cooler heater

• Heaters overheat and burn out (fail open)

• Heaters are rated for 500w @ 120v

• Nominal heater resistance is 28.8 +/- 1.4

ohms

30XA Oil Separator Heater Failures

• Solution

– A new oil separator heater is now

available. Part Number is

00PPN800000300A.

• Units produced starting with

serial number 1108Qnnnnn have the new heater installed.

• Heater is still rated @ 500w.

Contains integral thermostat

with a 350°F setpoint to prevent

overheating.

• SMB08-0037 covers extended

warranty policy

30XA Software incompatibility with CPM

• All MBB software is not backward compatible with all CPM versions.

– CPM may also be referred to as TCPM.

• TCPM=Thunderbolt Compressor Protection Module.

– Testing indicates that HPS trips will not be displayed as alarms unless

unit is equipped with manual reset switch.

• 00PPG000444400A HPS w/ manual reset implemented SSN 2806Q.

– Version 4.01 software was to field tested to verify corrections.

– Units with ver. 1.0 CPM work with MBB ver. 2.06 and lower w/o replacing

HPS.

CPM rev

1.X 2.X 3.X 4.X 5.X

1.0 ok ok no** no * ok

2.0 no ok ok ok ok

3.0 no no no ok ok

** : 30XA software version 3.02 associated with CPM version 1.0 causes the EXV stay at the startup position.

* : 30XA software version 4.X associated with CPM version 1.0 can not perform the welded contactor management.

30XA sw version

30XA Software incompatibility with CPM

• 30XA’s manufactured with serial numbers between 2408Qnnnnn and 2608Qnnnnn where incorrectly shipped with MBB ver. 3.02 software and ver. 3.0 CPM’s. – The MBB will have to be upgraded to version 5.00 for proper operation.

– If the HPS trips the MBB does not recognize it. No alarm will be generated.

– Loose connection in the HPS circuit may cause eratic compressor operation.

– Beginning with serial number 2708Qnnnnn units were shipped with ver. 5.0 MBB software.

– A SMB will be issued to cover software upgrade.

• Replacement CPM’s shipped from RCD will be ver. 3.0. A MBB software upgrade to ver. 5.0 or higher will be necessary for proper operation. – CPM Software cannot be downloaded in the field because it is a UL

listed compressor protection device.

30XA Compressor will not start

• Situation: – Compressor will not run and no alarms displayed

• Units are inadvertently shipped from the factory with the

compressors disabled or incorrectly configured in the field.

– Run Status>CP.UN>x.UN = YES (No = Enable)

• Circuit is low on refrigerant. Capacity control override in effect.

– Run Status>VIEW>CAP.S = 34, 35 or 36

• Low oil level. Oil level switch is open.

– Inputs>GEN.I>OIL.x = LOW (HIGH = Closed)

• The Start/Stop button was not depressed on units equipped

with Touch Pilot.

30XA Software Change Summary (1)

• Information – The following operational issues have been reported involving

30XA software versions up to and including version 1.05 (CSA-SR-20C470105).

• When operating at low loads, under some circumstances hot gas can pass uncondensed through portions of the condenser coils. The bypassed hot gas, mixed with condensed refrigerant, may boost cooler saturated suction temperature higher than cooler water temperatures. This can generate Alarms Pr.04, Pr.05, Pr.06, “Suction Pressure Transducer Failure”. The EXV will typically be fully open or close to fully open to pass the mixed phase fluid.

• When configured for medium brine, low saturated suction temperature capacity override will be erroneously based on the default water freeze point (34°F) rather than the configured brine freeze point. Compressor will not load up.

• Does not support “Black Box” feature.


• Information – Version 2.01 (CSA-SR-20C470201) was released for production

with units having serial numbers beginning with 2406Qnnnnn. This version includes the following changes: • Software is modified to handle the Touch Pilot (“High Tier”) touch

screen display.

• The conditions for Suction Pressure Transducer Failure, Pr.04, Pr.05, Pr.06, now require that the EXV be less than 50% open. This eliminates declaration of these alarms under the conditions described in SITUATION above.

• When configured for medium brine, low saturated suction temperature capacity override now is based on the configured brine freeze point LO.SP.

• “Black Box” data acquisition feature now supported – Discharge gas temperatures are added to the set of points collected.

• Detection was added for swapped water temperature sensors.


• Information (cont’d) • EXV operation is modified for the case of discharge gas temperature

below 180°F.

• An extra 10 second delay is added before declaring a low suction

temperature alarm for brine.

– Anomalies

• Operating compressor(s) in Service Test with Navigator does not

work with Version 2.01.

• Condenser fans will start and run for short periods of time when the

unit is OFF.



with units having serial numbers beginning with 1107Qnnnnn. This version includes the following changes:

• Corrected unintentional operation of condenser fans

• Modified head pressure control routine for brine applications to eliminate P.78,P.79,P.80 high discharge temperature alarms

– If LBT>28°F the condensing temperature setpoint is not allowed to increase at startup during low ambient conditions



with units having serial numbers beginning with 4107Qnnnnn. This version includes the following changes:

• Improvement on compressor capacity control : at startup, 10%

increase instead of 5% allows unit to load quicker.

• Remove access to heat reclaim and heat pump parameters on

Navigator display. • Add missing CCN variables for Data Collection tool and Best ++

access (CURREN_A …) • Corrected problem with Start/Stop mode based on time schedule not

working when using Touch Pilot display.

• Improve the timing management to detect oil pressure and

economizer pressure failure



with units having serial numbers beginning with 1608Qnnnnn. This version includes the following changes: • Pump 1 output is duplicated at MBB-J2B

• Corrected "slide valve unverifiable" alert and improved slide valve

reactivity. • Corrected bug on slide valve control on triple circuit : it was possible

to have 2 circuits with 30% load

• Add hydraulic kit sensors management (not supported)

• Add welded contactor management

• Change the item name "cpb_cur" into "cpc_cur" for circuit C maintenance table

• Improve capacity control (fast unloading) to protect against freeze alarm in case of quick building load decrease

• Device description change will now be saved and not over written.


• Information

– Version 5.00 (CSA-SR-20C470500) was released for production

with units having serial numbers beginning with 2708Qnnnnn.

This version includes the following changes:

• Allows operation with CPM version 1.

– (Backward compatibility issue. MBB ver. 3.02 would not work with CPM

ver. 1.0)

• Integrate 30XW (water-cooled) application

• Extend fastload range to 4 for future fast loading function

– (not supported)

• Change alarm text for alarms "P-37 to 39 and P-81 to P-83

30GX/HX FIELD ISSUES

• ICM to TI CPM Conversion

• Software Change Summary

30GX/HX ICM to TI CPM Conversion

• ICM Compressor Protection Module discontinued

– Used on 30HX-076 to 271 and 30GX-080 to 265 Series 0,1,2 units

– Microprocessor for ICM CPM in no longer available

– Conversion kit is to be released soon

ICM CPM p/n HN67LM100 TI CPM p/n HN67LM103



– There will be 2 kits

• 30HX660012 for 2 compressor units. (Includes one (1) CPM)

• 30HX660013 for 3 compressor units. (Includes two (2) CPM’s)

• All CPM’s have to be replaced during the conversion.

– One (1) HN67LM103 replaces two (2) HN67LM100 boards

• New Toroids/CT’s are required for each compressor

– Replacement toroids must be selected for unit size and voltage

– Toroids are NOT included in conversion kits. Must be ordered

separately.

– 30GX sensor harness for toroids is NOT included in 30HX660013.

» 30GX660009 required for 30GX size 205 to 265

– Furnas Overload is not required with TI CPM.


CPM

Toroid

Overload (Not req’d w/ TI)

ICM TI



– Software upgrade required

• PSIO1 will have to be downloaded with correct

software to recognize TI CPM.

• Use Winloader to upgrade software

– Version 15 or 17

– Select TISERV configuration file

PSIO1

30GX/HX Software Change Summary (1)

• Version 2.1

– Corrects situation of MBB loss of control of compressor protection

board (CCP).

• Symptoms of problem are failure to be able to operate outputs or read

inputs from CCP.

– Oil soienoid and motor cooling solenoid will not function

– Motor temperature indicates 0°F

• Prior to Ver. 2.1, solution was to temporarily change configured number

of Circuit A compressors from 1 to 2 then back to 1.


• Version 2.7 (SSN 4906Qnnnnn)

– Corrects multiple problems associated with Chillervisor control

• Symptoms of problem are loss of communication and improper

indication of unit status.

• All units with Enhanced Screw software that are being controlled by a

CSM should be upgraded.

– Reduces low oil pressure alarms on 30HXA,C206 & 246

• Low oil pressure alarms reported when A2 compressor was operating

alone.

• Compressor A2 will not run as the only compressor on in the circuit

unless A1 is failed. If A2 is running alone, then the oil pump will always

be energized.

– Corrected units for DOP_A1, DOP_A2, DOP_B1, and DOP_B2

• They were specified as PSIG. They are displayed as PSIA.


• Version 2.11 (Beta Version) DO NOT USE

– Service Test for A2 does not work for 30HX-206 and 246

• This is a problem in version 2.7 that was introduced when adding the

A2 cannot start if A1 is not running enhancement.

– Corrected problem where LWT was not checked for cooler freeze

protection.

• Only EWT was being checked.

– Corrected issue that all compressors shutdown immediately when

remote start contacts open or R-O-E switch is placed in the OFF

position.

• All loaders will be de-energized immediately for 15 seconds before

staggering the shutdown of compressor 5 seconds apart.



– EXV Starting position too small for units with 2 compressors/circuit.

• EXV calculated starting position is no longer divided by the number of

compressors in the circuit.

– MLV remains energized for 30 sec. without compressor

• Corrected problem that if the first compressor of the unit is selected to

be started and during the start process, either a “Compressor Prestart

Oil Pressure” fault or “Oil Solenoid Failure” is encountered, MLV was

energized for 30 seconds without any compressor ON.

– Corrected problem of Ckt. B EXV occasionally not moving if both

circuits were operating.



– Added reverse rotation alarm for A1, A2, B1 and B2 compressors.

• If the discharge pressure drops at the starting of the circuit, alarm will

be generated for the compressor that is starting. Alarm reset method

shall be manual.

– T051 Circuit A, Compressor 1 Failure - Reverse Rotation

– T052 Circuit A, Compressor 2 Failure - Reverse Rotation

– T055 Circuit B, Compressor 1 Failure - Reverse Rotation

– T056 Circuit B, Compressor 2 Failure - Reverse Rotation


• Version 2.11 (Beta Version) DO NOT USE – A1 compressor always starts first

• Corrected problem introduced in version 2.07 for 30HX-206 and 246 units. Compressor A1 is always chosen to be the first compressor of the unit to be started even though A1 has more run hours than B1.

– Corrected problem with compressor oil solenoid not being energized.

• If Configuration>UNIT>CAP.A is configured for 100% B1 and B2 oil solenoids are not energized.

• If Configuration>UNIT>CAP.A is configured for 0% A1 and A2 oil solenoids are not energized.

– Anomalies

• If compressor is disabled Configuration>SERV>EN.xx and power is cycled configuration will revert to enabled.

• Nuisance Reverse Rotation alarms have been reported. Use Version 2.10 instead of 2.11.

Latest Software Versions (9/10/2008)

Product

Latest

Version*

Production

Version

Version

(HVAC Partners)

30RB 5.02 5.01 5.01

30XA 5.00 5.00 5.00

30RAN 5.0 5.0 ---

30GX,HX (series 6) 2.10 2.7 (HX only) 2.10

30GX,HX (series 4, 5) 5.3 --- 5.3

30GX,HX (series 0-3) w/ PSIO 17.7 --- 17.6

30HK, HL 4.3 4.3 4.3

30HW, 30GTN015-035 1.2 1.2 (HW only) 1.2

30GTN040-420 4.3 --- 4.3

* Including unreleased and beta versions

Documents

Field Issues: 30 Series Packaged Chillersdocshare01.docshare.tips/files/14470/144702295.pdf · eliminating the need for the timer (RRT) and contactor (RRC). −If voltage drops below