Manuals / Carrier / Kitchen Appliance / Refrigerator

Carrier 30HL050, 30HW018-040, 30HK040-060 specifications Ð Thermistor

Models: 30HK040-060 060 30HL050 30HW018-040

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Fig. 22 Ð Thermistor

Thermistor Ð The resistance at various temperatures for the thermistor are given in Tables 12A and 12B.

THERMISTOR REPLACEMENT, 30HK, HL UNITS

Thermistors are installed directly in ¯uid circuit. Drain ¯uid before removing.

Proceed as follows (see Fig. 22):

1. Remove and discard original thermistor and coupling.

IMPORTANT: Do not diassemble new coupling. In- stall as received.

2.Apply pipe sealant to 1¤4-in. NPT threads on replacement coupling and install in place of original. Do not use a pack- ing nut to tighten coupling. This damages the ferrules (see Fig. 22).

3.Insert thermistor T1 into coupling body to its full depth. Tighten packing nut ®nger tight to position ferrules, then tighten 11¤4 turns more using a back-up wrench. Ferrules are not attached to the sensor, which can be withdrawn from coupling for service.

THERMISTOR REPLACEMENT, 30HW UNITS Ð To re- place the thermistor, follow these steps:

1.Disconnect the existing thermistor from the S1 and S2 terminals of the temperature controller (located in the con- trol section of the control box).

2.Remove the thermistor from the well in the cooler leaving- ¯uid cacity.

3.Insert the replacement thermistor into the thermistor well.

4.Run thermistor wires into the control box and connect to the S1 and S2 terminals of the temperature controller.

Fig. 22 Ð Thermistor

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Carrier 30HL050, 30HW018-040, 30HK040-060 specifications Ð Thermistor

Contents

Installation, Start-Up and Service Instructions CONTENTS30HK040-060 30HL050,060 30HW018-040 Reciprocating Liquid Chillers 50/60 HzGENERAL SAFETY CONSIDERATIONSFig. 2 Ð 30HWA,B Unit Fig. 3 Ð 30HWC,S Unit Fig. 1 Ð 30HK,HL Unit 30HK ShownINSTALLATION Step 2 Ð Rig and Place UnitStep 3 Ð Place the Unit Fig. 4 Ð 30HK040-060 Fluid Cooled FRONT VIEWRIGHT SIDE VIEW Fig. 5 Ð 30HL050,060 Condenserless 1. Standard unit shown with the sound en- closure accessoryCLY Ð Cylinder COMP Ð Compressor CONN Ð Connection K.O. Ð Knockout Fig. 6 Ð 30HWA018-040 Condenserless REAR VIEW LEFT SIDE VIEWRIGHT SIDE VIEW 2. Denotes accessory or factory-installed option Fig. 7 Ð 30HWB018-040 Fluid Cooled3. Dimensions are in inches. Dimensions in are in millimeters 1. Denotes center of gravityLEFT SIDE VIEW Fig. 8 Ð 30HWC,S018-040 Fluid CooledFRONT VIEW RIGHT SIDE VIEWFig. 10 Ð Mounting Hole Weight Distribution 30HW Units Fig. 9 Ð Weight Distribution and Mounting Hole Location 30HK,HL UnitsWEIGHT DISTRIBUTION AT EACH MOUNTING HOLE, 60 HZ UNITS WEIGHT DISTRIBUTION AT EACH MOUNTING HOLE, 50 HZ UNITSPage Page Table 2B Ð Physical Data 30HL, HWA Condenserless Units Ð SI Table 2A Ð Physical Data 30HL, HWA Condenserless Units Ð EnglishTHUMB-SCREW BRAKE Fig. 11 Ð Factory-Installed Unit Wheels Fig. 12 Ð Compressor MountingFig. 13 Ð Typical Piping with Fluid-Cooled 30HWB Unit Shown Page Fig. 15 Ð Installed Coupling Fastening Grooved Pipe Ends Fig. 16 Ð Cooler and Condenser Water Pressure Drop Table 3 Ð Minimum Cooler and Condenser Flow Rates Minimum Loop VolumeCOOLER PRESSURE DROP Ð 30HW UNITS COOLER PRESSURE DROP Ð 30HK, HL UNITSCONDENSER PRESSURE DROP Ð Fig. 16 Ð Cooler and Condenser Water Pressure Drop cont30HK UNITS 30HWB UNITSPage Table 4A Ð Electrical Data Ð 30HK, HWB, HWC, HWS Fluid-Cooled Units 30HK, HL, HWA, HWB Table 4B Ð Electrical Data Ð 30HL and HWA Condenserless UnitsFIELD POWER WIRING, 60 Hz UNITS Fig. 17 Ð Field Wiring Diagram 30HK, HL UnitsFIELD CONTROL WIRING, 50 Hz UNITS FIELD ACCESSORY WIRINGFig. 18 Ð Field Wiring Diagram 30HW Units Interrupt Field Wiring Factory WiringR Ð Relay Fig. 19 Ð 30HK, HL Control Box PRE-START-UP Initial CheckFig. 20 Ð 30HW Control Box Components Label Table 6 Ð Deadband Setting Check Refrigerant ChargeTable 5 Ð Typical Deadband Requirements START-UP AND OPERATION Operating LimitationsCheck Refrigerant Feed Components Table 7 Ð Pressure Relief Valve Settings Compressor and Unit Protective DevicesCheck Unit Safeties Table 8 Ð Factory Settings, High-Pressure Switch Fixed Table 9 Ð Factory Settings, Low-Pressure Switch FixedFig. 21 Ð Temperature Controller UNIT OPERATION Capacity Control and Operating Sequence Ð Table 10 Ð Capacity Control Steps Ð 30HK, HL Standard Units SERVICE Fig. 22 Ð Thermistor 11,111 Table 12A Ð Sensor Temperature F vs ResistanceTable 12B Ð Sensor Temperature C vs Resistance Tightening Cooler Head Bolts SERVICING COOLER 30HK,HL ONLYFig. 23 Ð Typical Tube Sheet Table 13 Ð Plugs and TubesTROUBLESHOOTING Fig. 24 Ð Elliott Tube PlugFig. 25 Ð Typical Tube Sheet Compressor cycles control Table 14 Ð TroubleshootingTable 14 Ð Troubleshooting cont ing is considered abuse and is not covered by warrantymay be added to the water. Damage to chiller due to freez CALL FOR FREE CATALOG SERVICE TRAININGA. Preliminary Information START-UP CHECKLIST FOR CHILLER SYSTEMS Remove and use for job leB. Preliminary Equipment Check YES or NO EQUIPMENT Chiller MODEL #CL-2 B. Preliminary Equipment Check YES or NO contCL-3 C. Unit Start-Up contCopyright 1998 Carrier Corporation