Maintenance, troubleshooting, spare parts and dismantling
30
DRYPOINT® RA HT 20-350 NA UL
◆
Where installed
-
The HPS high-
pressure switch has
been activated.
Check which of the following has caused the activation :
1.
The ambient temperature is too high or the room aeration is insufficient - provide proper ventilation.
2.
The condenser is dirty - clean it.
3.
The
condenser fan doesn’t work - see specific point.
Reset the pressure-switch pressing the button on the controller itself - verify the dryer for correct
operation.
The HPS pressure switch is faulty - contact a refrigeration engineer to replace it.
◆
Where installed
-
The LPS low-
pressure switch has
been activated.
There is a leak in the refrigerating fluid circuit - contact a refrigeration engineer.
The pressure switch restores automatically when normal conditions are restored - check the proper
operation of the dryer.
◆
Where installed
-
The TS safety
thermo-switch has
been activated.
Check which of the following has caused the activation :
1. Eccessive thermal load
– restore the standard operating conditions.
2. The inlet air is too hot - restore the nominal conditions.
3. The ambient temperature is too high or the room aeration is insufficient - provide proper
ventilation.
4. The condenser unit is dirty - clean it.
5.
The fan doesn’t work - see specific point.
6. There is a leak in the refrigerating fluid circuit - contact a refrigeration engineer.
Reset the thermo-switch by pressing the button on the thermo-switch itself
– verify the correct operation
of the dryer.
The TS thermo-switch is faulty - replace it.
◆
DMC14
- The LED
of the
instrument is on or
flashes to indicate
alarm situations.
The LED
flashes because the DewPoint is too high
– see specific point.
The LED
flashes because the DewPoint is too low - see specific point.
The LED
flashes because the probe is faulty or interrupted, the instrument displays the
message “PF” (Probe Failure) – replace the probe.
Summary of Contents for DRYPOINT RA HT 100-P NA UL
Page 19: ...DRYPOINT RA HT 20 350 NA UL 19 10 2 Technical data DRYPOINT RA HT 150 350 NA E 1 230 60 UL ...
Page 34: ...Appendices 34 DRYPOINT RA HT 20 350 NA UL 13 1 2 Dryers Dimensions DRYPOINT RA HT 75 NA UL ...
Page 35: ...Appendices DRYPOINT RA HT 20 350 NA UL 35 13 1 3 Dryer dimensions DRYPOINT RA HT 100 NA UL ...
Page 36: ...Appendices 36 DRYPOINT RA HT 20 350 NA UL 13 1 4 Dryer dimensions DRYPOINT RA HT 150 NA UL ...
Page 46: ...Appendices 46 DRYPOINT RA HT 20 350 NA UL 13 3 2 Electric diagram DRYPOINT RA HT 20 50 NA UL ...
Page 47: ...Appendices DRYPOINT RA HT 20 350 NA UL 47 13 3 3 Electric diagram DRYPOINT RA HT 75 100 NA UL ...
Page 48: ...Appendices 48 DRYPOINT RA HT 20 350 NA UL 13 3 4 Electric diagram DRYPOINT RA HT 150 NA UL ...
Page 51: ...Appendices ...
