Maintenance, troubleshooting, spare parts and dismantling
42
– EN
ACT VS 3000 - 6000
◆
Compressor
discharge
temperature too
high.
Check which of the following has caused the failure:
1. Excessive 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. Refrigerant gas leak - contact a refrigeration engineer.
7. One or more Electronic Expansion Valve EEV doesn't work properly - see specific point.
◆
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. Failure refrigerant pressure transducer BHP
– verify condensing pressure (HP) measure from
BHP (value available on DMC
50 display) with a pressure gauge and if they doesn’t match
replace the transducer.
4.
The fan doesn’t work properly - does not achieve the full speed- see specific point (Air-
Cooled).
5. The temperature of the cooling water is too hot
– restore nominal conditions (Water-Cooled).
6. 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. Ambient temperature is too low - restore nominal conditions (Air-Cooled).
2. 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).
3. The temperature of the cooling water is too low
– restore nominal conditions (Water-Cooled).
4. The cooling water flow adjusting valve requires re-adjusting - contact a specialized technician
to restore nominal setting (Water-Cooled).
5. Failure refrigerant pressure transducer BHP
– verify condensing pressure (HP) measure from
BHP (value available on DMC
50 display) with a pressure gauge and if they doesn’t match
replace the transducer.
6. Refrigerant gas leak - contact a refrigeration engineer.
7.
The fan doesn’t work properly - it runs at speed too high - see specific point (Air-Cooled).
8. Compressor does not work
– see specific point.
◆
Evaporating
pressure too high
Find out the reason for the fault:
1. Excessive thermal load
– re-establish the nominal conditions.
2. The inlet air is too hot
– re-establish the nominal conditions.
3. The ambient air temperature is too high or the room ventilation insufficient
– ensure sufficient
ventilation.
4. The condenser is dirty
– please clean it (air-cooled).
5. The fan does not work
– see the corresponding section (air-cooled).
6. Check by-pass solenoid valve proper functioning.
7. The adjusting valve for the cooling-water flow needs to be re-adjusted - contact a specialist
to have the nominal calibration re-established (water-cooled).
8. Evaporating pressure measured with DMC50 and BLP pressure transducer is not correct.
Contact a refrigeration engineer to verify and compare the correct evaporating pressure
value. If required replace BLP pressure transducer and/or DMC50 controller
9. One or more Electronic Expansion Valve EEV doesn't work properly - see specific point.
10. Compressor does not work
– see specific point.
Содержание ACT VC 3000 - 6000
Страница 52: ...Attachments 52 EN ACT VS 3000 6000 ...
Страница 53: ...Attachments ACT VS 3000 6000 EN 53 ...