ACT 1500-2500, User Manual

Page: 34 / 68

Maintenance, troubleshooting, spare parts and dismantling
34 – EN
ACT 600 – 5000
SYMPTOM POSSIBLE CAUSE - SUGGESTED ACTION
 Compressor
discharge
temperature too
high.

Check which of the following has caused the failure :
1. Eccessive thermal load – restore nominal conditions.
2. The inlet air is too hot - restore nominal conditions.
3. The ambient temperature is too high or the room aeration is insufficient - provide
proper ventilation (Air-Cooled).
4. The condenser unit is dirty - clean it (Air-Cooled).
5. The fan doesn’t work - see specific point (Air-Cooled).
6. The fan is always on – verify proper operation of fan power contactor (see
KV1/KV2 on electric diagram) and/or of pressure transducer (see BHP on electric
diagram) – (Air-Cooled).
7. The hot gas by-pass valve requires re-adjusting – contact a specialized technician
to restore nominal setting.
8. The temperature of the cooling water is too low – restore nominal conditions
(Water-Cooled).
9. The cooling water flow adjusting valve requires re-adjusting - contact a specialized
technician to restore nominal setting (Water-Cooled).
10. Refrigerant gas leak - contact a refrigeration engineer.
 Condensing
pressure too
high
 Check which of the following has caused the failure :
1. The ambient temperature is too high or the room aeration is insufficient - provide
proper ventilation (Air-Cooled).
2. The condenser unit is dirty - clean it (Air-Cooled).
3. The fan doesn’t work - see specific point (Air-Cooled).
4. The temperature of the cooling water is too hot – restore nominal conditions
(Water-Cooled).
5. Cooling water flow is not sufficient – restore nominal conditions (Water-Cooled).
 Condensing
pressure too
low
 Check which of the following has caused the failure :
1. The fan is always on – verify proper operation of fan power contactor (see
KV1/KV2 on electric diagram) and/or of pressure transducer (see BHP on electric
diagram) – (Air-Cooled).
2. Ambient temperature is too low - restore nominal conditions (Air-Cooled).
3. Air flows through the condenser even with fan off – protect dryer against wind or
external air flows (not caused by dryer’s fan) (Air-Cooled).
4. The temperature of the cooling water is too low – restore nominal conditions
(Water-Cooled).
5. The cooling water flow adjusting valve requires re-adjusting - contact a specialized
technician to restore nominal setting (Water-Cooled).
6. Refrigerant gas leak - contact a refrigeration engineer.
7. Compressor does not work – see specific point.