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MAINTENANCE
Operational malfunction
The dehumidifier is equipped with manually resettable
protector devices for the heating coil and high pressure
and with a fuse for the electrical control system.
If the heating coil stops working, it may be due to an
overheating protector (GT2:1 or GT2:2) being triggered.
GT2:1 and GT2:2 are located inside the front cover.
To reset them, follow these steps:
1. Disconnect the power to the dehumidifier.
2. Look for the cause of the protector(s) being
triggered and fix the fault. The cause may be
an electrical fault or poor air circulation.
3. Unscrew the hatch on the dehumidifier.
4. Reset the protector(s) by depressing sprung
contacts GT2:1 and GT2:2.
5. Reattach the hatch, switch on the power and start
the dehumidifier.
If the compressor stops and the high pressure light
(H1) illuminates, the high pressure protector (GP1)
on the pressure switch has been triggered. Reset the
protector as follows:
1. Disconnect the power to the dehumidifier.
2. Unscrew the hatch on the dehumidifier.
3. Depress the button GP1.
4. Reattach the hatch, switch on the power and start
the dehumidifier.
Time relay (K4)
Timber dehumidifier
When the dehumidifier is used to dry timber, the time
relay makes it possible to delay start of operation in
order to prevent current overload if multiple units are
installed.
Industrial dehumidifier
When the dehumidifier is used as an industrial dryer,
the time relay has the function of delaying start in
order to allow a defrost time (approx. 5 minutes) for
the evaporator when the dehumidifier operates in low
pressure conditions.
GP1
GT1
GT2:1 GT2:2 GT3
Selector A
Selector
B
Selector
C
Setting of selectors on time relay K4
Application area
Selector A Selector B Selector C
Timber dehumidifier e.g. 1-10 min. ≥ 0 min. setting A
Industrial dehumidifier e.g. 1-10 min. ≥ 5 min. setting A
or e.g. 6-60 min.
K4
