Carrier 30 GA Service Manual

130GH/GZ 009-035Air-Cooled Liquid Chillers50 HzInstallation, Operation and Maintenance Instructions

10Minimum evaporator water flow rates30GH/GZ Min. flow rate, l/s009 0.3013 0.5015 0.7020 0.8025 1.0030 1.2035 1.3If the flow rate is lower, follow the

111232345678910 1520 30 40 5060 70 804681012 14 16 1820 3040 60 80 100120 140Qm3/h.Qm3/h.16020018016014012010080604020020181614121086420kPa m WGI/s

12`• The water circulating pumps in the HYDROFLOWmodule are sized to cover the widest application range.For this reason it is essential to install a w

13INSTALLATIONSAFETY CONSIDERATIONSInstallation, start-up and servicing this equipment can behazardous due to system pressures, electrical components

14Water connectionsRefer to the certified dimensional drawings for the sizes andpositions of all water inlet and outlet connections. The waterpipes mu

15Power supplyThe power supply must conform to the specification on thechiller nameplate. The supply voltage must be within the rangespecified in the

16Design set point adjustment (three-step thermostat)Legend:A - Differential between stagesB - Differential on one contactR, Y, B - Thermostat contact

17SERVICING REFRIGERATION COMPONENTSServicing must be done by a qualified refrigeration engineer.WARNING: Before doing any work on the machine ensure

18Discharge gas thermostat(30GH/GZ 015/035) - electromechanical version or unitswith low-temperature optionA sensor in each compressor discharge line

19Heat exchangersBrazed plate heat exchanger (evaporator)Protection devices - freeze-up prevention thermostatThe evaporator is protected against freez

CONTENTSPageStart-up checklist ...

20Filter-drierThe filter-drier keeps the circuit clean and free of moisture. Thesight glass indicates when it is necessary to change the cartridgein t

21TROUBLESHOOTING CHARTBelow we list a series of possible faults, along with the probable causes and suggested solutions. In the event of a unitmalfun

22SYMPTOMSPump will not startPump stopsPump runs continuouslyNoises in systemPressure lossCAUSEIsolator switch openFlow controller openCircuit breaker

23

24Manufactured by Carrier SA, Montluel, FranceOrder No. 13030-76, September 1997. Supersedes order No.: 13030-76, June 1996 Printed on Totally Chlorin

START-UP CHECK LISTStart-up date:Equipment sold by: Contract No.:Installed by: Contract No.:Site address:Start-up date:Equipment type and serial numbe

4Dimensions and clearances (standard unit)30GH/GZ ABCDEFG009-013 1160 1220 1060 1200 1000 1000 1000015-025 1720 1160 1112 1200 1000 1000 1000030-035 2

530GH and 30GZ 030-035Floor mounting• For unit mounting holes, weight distribution and centre of gravity coordinates, refer to the dimensionaldrawings

630GH/GZ ABCDEFG009-013 1160 1310 1781 1200 1000 1000 1000015-025 1720 1246 1833 1200 1000 1000 1000030-035 2150 1370 2052 1200 1000 1000 1200All dime

730GH and 30GZ 030-035Floor mounting• For unit mounting holes, weight distribution and centre of gravity coordinates, refer to the dimensionaldrawings

8Physical dataSize 009 013 015 020 025 030 035Net nominal cooling capacity 30GH* kW 21.2 31.6 40.1 52.0 64.0 74.0 93.0Net nominal cooling capacity 30G

9NOTES:• 30GH/GZ 009-035 units have a single power connectionpoint.• A separate power source (230 V, 1 ph, 50 Hz) that doesnot exceed the main switch