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Maintenance, troubleshooting, spare parts and dismantling
Prior to carrying out maintenance works at the dryer, switch it off and wait for at least 30 minutes.
Caution!
Hot surfaces!
During operation, several components can reach surface temperatures of more than +60°C. There is
the risk of burns.
All components concerned are installed inside of the closed housing. The housing must only be opened
by certified skilled personnel.
Some components can reach high temperatures during operation. Avoid any contact until the system or
the component has cooled down.
FAULT
The dryer does not
start.
The refrigerating
compressor does
not work.
The fan of the
condenser does not
work (air-cooled).
Dew point too high
Dew point too low.
44
POSSIBLE REASON – SUGGESTED MEASURE
Check the power supply.
Check the electric cabling.
Fuse breakdown (see FU1/FU2/FU3 in the electric diagram) in the auxiliary circuit –
replace it and check the proper operation of the dryer.
Electronic controller DMC50 in alarm condition – see the corresponding point.
Check the electric cabling.
Electronic controller DMC50 in alarm condition – see the corresponding point.
In the event that the compressor still does not work, replace it.
Check the electric cabling.
Electronic controller DMC50 in alarm condition – see the corresponding point.
In the event that the fan still does not work, replace it.
Dryer does not start up – see the corresponding paragraph.
The BT1 dew point sensor does not record the temperature properly – ensure that the
sensor is pushed down to the bottom of the aluminium tube immersion sleeve.
The refrigerating compressor does not work – see the corresponding paragraph.
The room temperature is too high or the air change insufficient – ensure sufficient
ventilation (air-cooled).
The inlet air is too hot – re-establish the operating conditions indic.on the name plate.
The inlet air pressure is too low - re-establish the operating conditions indic.on the
name plate.
The inlet air throughput is higher than the throughput intended for operation – reduce
the throughput - re-establish the operating conditions indic.on the name plate.
The condenser is dirty – please clean it (air-cooled).
The fan does not work – see the corresponding paragraph (air-cooled).
The cooling water is too hot - re-establish the operating conditions indic.on the name
plate (water-cooled).
The cooling-water flow is insufficient - re-establish the operating conditions indic.on the
name plate (water-cooled).
The dryer does not discharge condensate – see the corresponding paragraph.
Refrigerant gas loss – contact a specialist for refrigerating plants.
The fan runs continuously – ensure perfect functioning of the pressure transducer (see
BHP on the electric diagram) – (air-cooled).
The ambient temperature is too low – re-establish the conditions indic.on the name
plate.
DRYPOINT® RA 1300-4400 eco
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Table of Contents
Troubleshooting
