McQuay M4LC, Руководство по обслуживанию

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62
Mini Chiller: Troubleshooting Guide
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troubleshooting tips are given below:
Symptoms
Possible Causes
Remedial Action
1. Compressor does not start
v
No power supply
v
Fuses blown or automatic circuit breakdown open
v
Defective contactor or coil
v
Unit is stopped because a safety has tripped
v
Loose wires
v
Compressor faulty
v
Check power supply
v
Look for short circuit or grounded wires in
motor windings
Replace fuses and reset circuit breakers when the fault has been corrected Check tightness and soundness of all electrical connection
v
Repair or replace
v
Determine the type of safety shut down and correct the unit is restarted
v
Check wire connection and tighten terminal screw
v
Contact local dealer
2. Fan does not start
v
No power supply
v
Fan motor faulty
v
Check power supply
v
Contact local dealer
3. Air conditioning does work, but insufficient cooling
v
Thermostat setting too high
v
Condenser coil dirty
v
Obstacle blocking air inlet or outlet of the unit
v
Insufficient refrigerant in the system
v
Improper water flow rate
v
Water in the system is contaminated
v
Reset thermostat
v
Contact local dealer
v
Remove the obstacle
v
Contact local dealer
v
Contact local dealer
v
Contact local dealer