Cornelius CH 251, CH 250 manual Troubleshooting

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TROUBLESHOOTING

WARNING: Disconnect electrical power to the Chiller to prevent personal injury before attempting any internal maintenance. Only qualified personnel should service internal components or electrical wiring.

If repairs to the Chiller must be made, disconnect electrical power to the unit, then shut off the water source.

TROUBLE

 

PROBABLE CAUSE

 

REMEDY

CHILLER DOES NOT

A.

No Power To Unit.

A.

Check Main disconnect fuses,

OPERATE, CONTROL

 

 

 

wiring, and power lead to unit.

POWER LIGHT “OFF”

 

 

 

 

 

B.

Defective Control Power

B.

Replace Switch

 

 

Switch.

 

 

 

C.

Defective Control Transformer.

C.

Replace Transformer

 

D.

Wrong Voltage Supplied to

D.

Supplied Voltage Must be within

 

 

Unit.

 

± 10% of nameplate rating.

 

 

 

 

 

PUMP DOES NOT OPERATE,

A.

Line to or from Chiller is

A.

Inspect lines and remove any

BUT POWER LIGHT IS “ON”.

 

restricted.

 

obstructions.

 

B. Internal or external filter is

B.

Remove and clean strainer, then

 

 

blocked with debris.

 

replace.

 

C.

Pump Contactor is

C.

Replace Contactor.

 

 

defective.

 

 

D.Damaged pump motor or impeller.

D.Replace pump motor or impeller.

UNIT RUNS CONTINUOUSLY, A.

Condenser is restricted.

A.

Clean condenser.

BUT IS NOT COOLING

 

 

 

PROCESS WATER ENOUGH.

 

 

 

B. Unit low on refrigerant.

B.

Call Service.

C.

Inefficient compressor.

C.

Call Service.

D. Unit is undersized for

D.

Call REMCOR Chiller Sales Rep.

 

application.

 

 

 

 

 

 

NOTE: When servicing a REMCOR Chiller, it is important to note all information provided on the DATA PLATE located in the upper rear of the unit. If technical assistance is needed, the REMCOR Service Technician will need this information along with any description of the problem(s) you are encountering. The serial number and other information will also be required when ordering replacement parts and any other Warranty Claims.

620914801

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Contents Chiller CH Series Table of Contents Introduction Unpacking and InspectionDesign Data Data Plate InformationChiller Installation Start UPLocation of Chiller Electrical ConnectionsThermostat Adjustment CorrectIncorrect Process Water Flow, Units Without Reservoir OptionalChiller Maintenance Lab & Industrial Grade Ethylene Glycol Commercial/Automotive AntifreezeTroubleshooting Wiring Diagram Wiring Cabinet Section Exploded View Page Warranty One Cornelius Place Anoka, Minnesota 763 800