Beko DRYPOINT RA HT 100-P NA UL, Instructions For Installation And Operation Manual

Page: 29 / 52

Maintenance, troubleshooting, spare parts and dismantling
DRYPOINT® RA HT 20-350 NA UL 29
FAULT POSSIBLE REASON
– SUGGESTED MEASURE
◆
The refrigerating
compressor does not
work.

The internal heat protection of the compressor was activated
– wait 30 minutes and then retry.

Check the electric cabling.

If installed
– replace the internal heat protection and/or the start-up relay and/or the starting
capacitor and/or the operating capacitor
.

If installed
– the HPS pressure switch was activated – see the corresponding point.

If installed
– the LPS pressure switch was activated – see the corresponding point.

If installed
– the TS safety temperature switch was activated – see the corresponding point.

If installed
– the power contactor KC1 does not work, replace it.

In the event that the compressor still does not work, replace it.
◆
The fan of the
condenser does not
work

Verify the electric wiring.

PV pressure switch is faulty - replace it.

There is a leak in the refrigerating fluid circuit - contact a refrigeration engineer.

If the fan still doesn't work, replace it.
◆
DRYPOINT RA HT 75-
350 NA
- The
Aftercooler fan doesn’t
work.

Verify the electric wiring.

If the fan still doesn't work, replace it.
◆
DewPoint too high.

The dryer doesn't start - see specific point.

The T1 DewPoint
probe doesn’t correctly detect the temperature - ensure the sensor is pushed into the
bottom of copper tube immersion well.

The refrigerating compressor doesn’t work - see specific point.

The ambient temperature is too high or the room aeration is insufficient - provide proper ventilation.

The inlet air is too hot - restore the nominal conditions.

The inlet air pressure is too low - restore the nominal conditions.

The inlet air flow rate is higher than the rate of the dryer - reduce the flow rate - restore the normal
conditions.

The condenser is dirty - clean it.

The aftercooler is dirty - clean it.

The condenser fan doesn’t work - see specific point.

The aftercooler fan doesn’t work - see specific point.

The dryer doesn’t drain the condensate - see specific point.

The hot gas by-pass valve is out of setting - contact a refrigeration engineer to restore the nominal
setting.

There is a leak in the refrigerating fluid circuit - contact a refrigeration engineer.
◆
The air compressor
doesn’t work.

Verify the electric wiring.

Verify that the air thermo-switch is working properly
If the air compressor still doesn't work see troubleshooting of the air compressor
◆
DewPoint too low.

The fan is always ON - PV pressure switch is faulty - replace it.

The Hot Gas By-pass Valve is out of setting - contact a refrigeration engineer to restore the nominal
setting.

Ambient temperature is too low - restore de nominal condition.
◆
Excessive pressure
drop within the dryer.

The Pre-Filter (1 micron) is clogged - replace the filter element (cartridge) - Refer to the instructions in
the user’s and maintenance manual of the filter.

The dryer doesn’t drain the condensate - see specific point.

The DewPoint is too low - the condensate is frost and blocks the air - see specific point.

Check for throttling the flexible connection hoses.
◆ The dryer doesn’t
drain the condensate.

The condensate drain service valve is closed - open it.

Verify the electric wiring.

The DewPoint is too low - the condensate is frozen - see specific point.

Bekomat drainer is not operating correctly (see BEKOMAT MANUAL)
◆
The dryer continuously
drains condensate.

Bekomat drainer is dirty (see BEKOMAT MANUAL)
◆
Water within the line.

The dryer doesn't start - see specific point.

Where installed
- Untreated air flows through the by-pass unit - close the by-pass.

The dryer doesn’t drain the condensate - see specific point.

DewPoint too high - see specific point.
◆
The dryer does not
start.

Check whether or not the dryer is connected with the electric mains.

Check the electric cabling.