Beko DRYPOINT RA 200/AC NA Operating Manual page 26

Maintenance, troubleshooting, spares and dismantling
DewPoint too low.
Excessive pressure
drop within the dryer.
The dryer doesn't drain
the condensate.
The dryer continuously
drains condensate.
Water within the line.
The safety thermo-
switch T tripped.
S
The P high-pressure
A
switch has been
activated.
The P low-pressure
B
switch has been
activated.
The "alarm" led is ON.
DMC14- The LED
of the
instrument is on or
flashes to indicate
alarm situations.
26
The fan is always ON - PV pressure switch is faulty - replace it (Air-Cooled).
The Hot Gas By-pass Valve is out of setting - contact a refrigeration engineer to restore the
nominal setting.
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 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)
Bekomat drainer is dirty – (see BEKOMAT MANUAL)
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.
Check which of the following has caused the activation :
1. Excessive 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.
7. Reset the thermo-switch by pressing the button on the thermo-switch itself – verify the
correct operation of the dryer.
8. The TS thermo-switch is faulty - replace it.
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 (Air-Cooled).
2. The condenser is dirty - clean it (Air-Cooled).
3. The condenser fan doesn't work - see specific point (Air-Cooled).
4. The cooling water is too hot - restore the nominal condition (Water-Cooled).
5. The cooling water flow is insufficient - restore the nominal condition (Water-Cooled).
6. Reset the pressure-switch pressing the button on the controller itself - verify the dryer for
correct operation.
7. The PA pressure switch is faulty - contact a refrigeration engineer to replace it.
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.
The P high-pressure switch is activated - see specific point.
A
The P low-pressure switch is activated - see specific point.
B
The electric protection (see Q1 on the electric diagram) of the compressor is activated -
restore it and retry.
The electric protection (see Q2 on the electric diagram) of the fan(s) is activated - restore it
and retry (air cooled).
The thermal protection (see TV on the electric diagram) inside the fan is activated - wait 30
minutes and retry.
The safety thermo-switch T
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.
has been activated - see specific point.
S
DRYPOINT RA 200 – 2500 NA