background image

31

To minimize the opportunity for reverse rotation, the following
procedure must be applied. Rewire the power cables to the
compressor terminal pin as originally wired.

For replacement of the compressor, a low pressure switch is
included with the compressor. This low pressure switch should
be temporarily installed as a hard safety on the high pressure
part of the compressor. The purpose of this switch is to protect
the compressor against any wiring errors at the compressor
terminal pin. The electrical contact of the switch would be
wired in series with the high pressure switch. The switch will
remain in place until the compressor has been started and
direction of rotation has been verified; at this point, the switch
will be removed.

The switch that has been selected for detecting reverse rotation
is Carrier part number HK01CB001. It is available as part of
the "Compressor installation package" (part No. 06NA 660
013). This switch opens the contacts when the pressure falls
below 50 mm of vacuum. The switch is a manual reset type
that can be reset after the pressure has once again risen above
70 kPa. It is critical that the switch be a  manual reset type to
preclude the compressor from short cycling in the reverse
direction.

15.8.2 - EXD Troubleshooting Procedure

Follow steps below to diagnose and correct EXD/
Economizer problems.
On 30HXC/GX units with economizers, verify that the valve
for the bubbler tube (bottom of Economizer) is open. Check
EXD motor operation first (see procedure in the Controls
IOM). You should be able to feel the actuator moving by
placing your hand on the EXD or economizer body (the
actuator is located about one-half to two-thirds of the way up
from the bottom of the economizer shell). You should feel a
hard knocking come from the actuator when it reaches the top
of its stroke (can be heard if surroundings are relatively quiet).
The actuator should knock when it reaches the bottom of its
stroke. If it is believed that the valve is not working properly,
contact your Carrier service department for further checks on:

output signals on EXD module

wire connections (continuity and tight connection at all pin
terminals)

resistance of the EXD motor windings.

Summary of Contents for 30GX Series

Page 1: ...w Compressor Water Cooled Liquid Chillers and Air Cooled Liquid Chillers 30HXC Nominal cooling capacity 290 1325 kW 30GX Nominal cooling capacity 285 1205 kW 50 Hz Installation operation and maintenan...

Page 2: ...The cover photograph is for illustrative purposes only and is not part of any offer for sale or contract...

Page 3: ...080 190 18 11 2 30HXC 200 285 19 11 3 30HXC 310 375 19 11 4 30GX 082 162 20 11 5 30GX 182 20 11 6 30GX 207 267 21 11 7 30GX 298 358 21 11 8 Piping connections 22 12 ELECTRICAL CHARACTERISTICS 23 12 1...

Page 4: ...t leaks or damage PROVIDE A DRAIN connection in the vent line near each pressure relief device to prevent a build up of condensate or rain water 1 INTRODUCTION Prior to initial start up of the 30HXC a...

Page 5: ...C110 2705 3220 2000 1000 3283 3438 950 30HXC175 30HXC190 3550 3 DIMENSIONS CLEARANCES WEIGHT DISTRIBUTION 3 1 30HXC 080 190 NOTE Refer to the certified dimensional drawings supplied with the unit when...

Page 6: ...be removal Clearances D and E can be either on the left or on the right hand side Water inlet Water outlet Power supply kg total operating weight Clearances required for operation and maintenance 2 4...

Page 7: ...h the unit when designing an installation Water inlet Water outlet Clearances required for evaporator tube removal Clearances can be either on the left or on the right hand side Power supply kg total...

Page 8: ...ing an installation Multiple chiller installation see note 2 SOLID SURFACE AREA SOLID SURFACE AREA Clearances required for evaporator tube removal Clearances can be either on the left or on the right...

Page 9: ...5 C Power input compressor at unit operating limits evaporator water entering leaving temperature 15 C 10 C condenser entering leaving water temperature 40 C 45 C and a nominal voltage of 400 V data g...

Page 10: ...nomized compressor E Economized compressor INOM Average current draw of the compressor at Eurovent conditions MHA Must hold amperes maximum operating current at 360 V LRA Locked rotor current with acr...

Page 11: ...d in the values above N A Not available The 30HXC 080 375 units for high condensing temperatures are directly derived from the standard models Their applicat ion range is the same as that of the stand...

Page 12: ...73 290 326 352 388 449 492 528 582 642 704 776 Maximum power input kW 127 141 154 175 191 207 234 253 286 319 355 380 429 462 506 572 Circuit A kW 193 228 253 286 253 253 286 Circuit B kW 127 127 127...

Page 13: ...he chilled water entering temperature EVAPORATOR RECIRCULATION Compressors Reference Size I nom MHA LRA LRA Y LRA S 1 cp LRA S 2 cp 06NA2146S7N 39 70 95 605 191 220 06NA2174S7N 46 90 120 715 226 260 0...

Page 14: ...hillers The chillers maintain a constant leaving water temperature under all flow conditions For this to happen the minimum flow rate must be higher than the minimum flow given in the table of permiss...

Page 15: ...30HXC 100 30GX 092 102 30HXC 110 30GX 112 122 30GX 132 5 30HXC 120 130 6 30HXC 140 155 30GX 152 162 7 8 9 10 30HXC 175 190 30GX 182 30HXC 200 30GX 207 227 30HXC 230 30GX 247 30HXC 260 285 30GX 267 11...

Page 16: ...6 30HXC 080 090 100 110 30HXC 120 130 30HXC 140 155 30HXC 200 30HXC 230 260 285 30HXC 310 345 375 30HXC 175 190 100 10 1 1 10 100 9 9 Condenser pressure drop curve Water flow rate l s Pressure drop kP...

Page 17: ...nd are complete and undamaged Do not store units in an area exposed to weather because of sensitive control mechanism and electronic devices 10 2 Moving and siting the unit 10 2 1 Moving Do not remove...

Page 18: ...HXC110 30HXC175 30HXC100 30HXC090 30HXC080 13 5 36 39 X Z Y 1 1 2000 mm mini 1200 mm mini 11 LIFTING INSTRUCTIONS 11 1 30HXC 080 190 This diagram is shown for information only Refer to certified drawi...

Page 19: ...0 mm min 1200 mm min 3500 mm min 1200 mm min 11 LIFTING INSTRUCTIONS CONT 11 2 30HXC 200 285 This diagram is shown for information only Refer to certified drawings NOTE When all lifting and positionin...

Page 20: ...X mm 1440 1650 1650 1650 2155 2155 1440 1440 30GX092 30GX102 60 MAX 1 2 2 5 T M X 60 27MINI Y Z 2300 mm min 2000 mm min NOTE When all lifting and positioning operations are finished it is recommended...

Page 21: ...572 6363 Z mm 890 927 890 886 Y mm 1440 1430 1440 1420 30GX207 30GX247 30GX227 30GX267 X mm 2870 3320 2870 3300 60 MAX 1 2 2 5 T M 60 MINI 2300 mm min Y Z 11 LIFTING INSTRUCTIONS CONT 11 6 30GX 207 26...

Page 22: ...vapour barrier 11 8 2 Evaporator and condenser connections The evaporator and condenser are of the multi tube shell and tube type with removable water boxes to facilitate cleaning of the tubes Before...

Page 23: ...ssible 2 and is therefore accepta ble MOTOR 12 ELECTRICAL CHARACTERISTICS The 30HXC 080 190 and 30GX 082 182 have only one power disconnect isolating switch The 30HXC 200 375 and 30GX 207 358 have two...

Page 24: ...Cu 170 1 x 150 XLPE Al 210 30HX 140 1 x 95 XLPE Cu 180 1 x 185 XLPE Al 220 30HX 155 1 x 95 XLPE Cu 180 1 x 240 XLPE Al 225 30HX 175 1 x 120 XLPE Cu 185 1 x 240 XLPE Al 225 30HX 190 1 x150 XLPE Cu 190...

Page 25: ...0 OPT 150 1 x 95 XLPE Cu 170 2 x 120 PVC Al 265 30HXC 120 OPT 150 1 x 120 XLPE Cu 180 2 x 120 XLPE Al 205 30HXC 130 OPT 150 1 x 120 XLPE Cu 160 2 x 120 XLPE Al 210 30HXC 140 OPT 150 1 x 150 XLPE Cu 17...

Page 26: ...o water passes 14 4 Oil separator 30GX In the air cooled units the oil separator is a pressure vessel that is mounted under the outside vertical condenser coils Discharge gas enters at the top of the...

Page 27: ...flow across the motor windings as needed On units equipped with economizers flash gas leaves the top of the economizer and continually flows to the motor windings All refrigerant used for motor cooli...

Page 28: ...V14 EV31 EV33 EV33 EV37 EV32 EV34 EV34 EV38 EV34 EV36 EV36 EV32 EV32 EV33 EV35 EV35 EV31 EV31 EV17 EV17 EV17 EV18 EV18 EV18 EV15 EV15 EV15 EV16 EV16 EV16 EV11 EV11 EV11 EV12 EV12 EV12 EV11 EV11 EV12 E...

Page 29: ...ioned above is not necessarily an indication of low refrigerant charge 3 Add 2 5 kg of liquid charge into the evaporator using the charging valve located on the top of the evaporator 4 Observe the EXD...

Page 30: ...excess oil charge may impair correct unit operation 15 5 Integral oil filter change An integral oil filter in the 06N screw compressor is specified to provide a high level of filtration 3 required for...

Page 31: ...vacuum The switch is a manual reset type that can be reset after the pressure has once again risen above 70 kPa It is critical that the switch be a manual reset type to preclude the compressor from s...

Page 32: ...ere any shipping damage If so where Will this damage prevent unit start up Unit is level in its installation Power supply agrees with the unit nameplate Electrical circuit wiring has been sized and in...

Page 33: ...art chiller if voltage imbalance is greater than 2 Contact local power company for assistance All incoming power voltage is within rated voltage range Check cooler water loop Water loop volume liters...

Page 34: ...control Minimum load select Condenser pump control Loading sequence select Condenser flow switch Lead lag sequence select Condenser water sensors Head pressure control Motormaster select If installed...

Page 35: ......

Page 36: ...03 1999 Supersedes No 13173 76 March 1998 Manufacturer Carrier s a Montluel France Manufacturer reserves the right to change any product specifications without notice Printed in the Netherlands on ch...

Reviews: