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Maintenance, troubleshooting, spare parts and dismantling
Extreme pressure drop
in the dryer.
The dryer does not
drain the condensate.
Failure during the
condensate discharge.
Water in the line.
If installed: the HPS
high-pressure switch
has triggered.
If installed:
the LPS low-pressure
switch was triggered.
If installed:
the T
safety
S
temperature switch
was triggered.
The DMC18
LED
is on.
38
The dryer does not discharge the condensate – see the corresponding point.
The dew point is too low – the condensate is frozen and blocks the air – see the
corresponding point.
Check the flexible connection hoses for obstructions.
The shut-off valve at the condensate outlet is closed – open it.
Check the electric cabling.
The dew point is too low – the condensate is frozen – see the corresponding point.
The BEKOMAT condensate drain does not work properly (see BEKOMAT MANUAL).
Please read the separate BEKOMAT installation and operating instructions.
The dryer does not start – see the corresponding point.
If installed - untreated air flows through the bypass unit – close the bypass.
The dryer does not drain condensate – see the corresponding point.
Dew point too high – see the corresponding point.
Check which of the following reasons is responsible for the triggering:
1. The ambient temperature is too high or the room ventilation insufficient – ensure sufficient
ventilation (air-cooled).
2. The condenser is dirty – please clean it (air-cooled).
3. The condenser fan does not work – see the corresponding point (air-cooled).
4. The cooling water is too hot – re-establish the nominal conditions (water-cooled).
5. The cooling-water flow is insufficient – re-establish the nominal conditions (water-cooled).
Reset the pressure switch by pressing the button on the controller itself – check the proper
functioning of the dryer.
The HPS pressure switch is defective – contact a BEKO service technician for the
replacement.
There is a leak in the refrigeration cycle – please contact a BEKO service technician.
The pressure switch is automatically reset as soon as the normal conditions are re-
established – check the dryer for proper functioning.
Check which of the following reasons is responsible for the triggering:
1. Excess thermal load – re-establish the standard operating conditions.
2. The inlet air is too hot – re-establish the nominal conditions.
3. The ambient temperature is too high or the room ventilation insufficient – ensure sufficient
ventilation.
4. The condenser unit is dirty – please clean it.
5. The fan does not work – see the corresponding point.
6. The hot-gas bypass valve needs to be re-adjusted – contact a specialist for refrigerating
plants to have the nominal calibration re-established.
7. The cooling-water temperature is too low – re-establish the nominal conditions (water-
cooled).
8. 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).
9. There is a leak in the refrigeration cycle – please contact a BEKO service technician.
Reset the temperature switch by manually pushing the button on the temperature switch –
check the perfect functioning of the dryer.
The TS temperature switch is defective – replace it.
When the
LED flashes: one or more service warnings/alarms are active. The
display shows the dew point temperature and the active service warnings/alarms.
The service warnings are indicated by the following messages:
1.
: PF – Failure temperature probe T1 (dew point) – check the electric cabling
and/or replace the probe.
2.
: Hdp – Dew point too high (higher than the adjusted alarm value) – see the
corresponding section.
3.
: Ldp – Dew point too low (lower than the adjusted alarm value) – see the
corresponding section.
4.
: drA – The Bekomat BM-IF condensate drain does not work properly - see the
corresponding section.
5.
: SrV - Service – maintenance notification time expired (parameter SrV) – carry
out the scheduled maintenance and reset the hour meter.
NOTE: SrV Service (service time expired) needs to be reset manually (press the
button and keep it pressed for at least 20 seconds).
DRYPOINT® RA 20-960
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Table of Contents
Troubleshooting
