Aircold WLA Compact 230/1/50, Перевод оригинальной инструкции

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WLA CompACT - TRANSLATIoN oF oRIGINAL INSTRUCTIoNS
10. Troubleshooting
Refer to the general safety rules indicated in paragraph 2.3. All the operations described in this
chapter must be performed only by qualified personnel according to that specified in paragraph
1.1.
problem possible cause Recommended intervention
1. The chiller fails
to start
No external consents Check the presence of external consents.
Incorrect external consent connection Check the external consent connections
The anti-circulation timer is on Wait 5 minutes
2. The
compressor
fails to start
Defective compressor Use the testers to check the winding phases if they are in
short circuit and the correct impedance. Repair/replace the
motor.
The power circuit is open. Check the power circuit
The compressor protection device is open Check the compressor work conditions
3. Compressor
repeated start
ups and stops
Defective compressor Check and/or replace it
Minimum pressure switch intervention See point 5
Defective compressor remote switch Check and/or replace it
Incorrect thermostat configuration Check and restore the original configuration, see point 7
No refrigerant Check and/or replace it
4. High pressure
switch
intervention
Defective pressure switch Clean the filters and/or condenser
Clogged air filter and/or condenser See point 6
Failed fan(s) Make sure that the liquid indicator indicates the presence of
humidity in the system or of bubbles in the liquid indicator
during normal operation. Replace the gas filter.
Clogged refrigerant filter Remove the refrigerant in excess. If the condensation pressure
is too high and if there are no additional anomalies in the
system, pay attention because zeotropic blends, as R407c,
allow you to discharge the circuit partially.
Excessive refrigerant gas charge Check and/or replace it
5. Minimum
pressure switch
intervention
Defective pressure switch See point 7
No refrigerant gas Check and open the valves completely
Valves closed partially on liquid line Check and/or replace it, see point 4
Clogged refrigerant filter Check if the machine does not cool down and if the low
pressure side has a too low pressure. Replace it if required
Blocked thermostatic valve Check if fluid circulates in the evaporator.
No thermal load Add liquid
Insufficient tank liquid level Check and/or replace it
6. The fan fails to
start
Defective fan remote switch Check the fan motor insulation
Fan circuit breaker intervention Check and/or replace it, see point 2
Defective fan motor Pressurise the circuit at 10 bar. Identify the leak with a leak
detector.
7. No refrigerant Leak from the refrigerant circuit Fill, repair, make the vacuum and refill.
8. Frost
thermostat
Blocked thermostatic valve Check and/or replace it
No refrigerant gas See point 7
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