Repair work at the humidifying and dehumidifying system
CAUTION!
Overflow of the internal wastewater tank due to condensate.
Emergence of water at the unit.
Following high humidity operation, do NOT directly switch off the unit.
Pump off the condensate before shut-down:
•
Set the humidity to 0 % r.H. and switch on humidity switch (-8S1). Operate the unit
for at least 2 hours.
•
Only then, shut down the unit at the main power switch (-
1S1
) and close the tap of
the water supply.
Functioning of the humidification module (-9A1):
Power supply of the humidification module is switched on with the humidity switch (
-8S1
) in the right lateral
control panel.
This power supply is also switched off temporarily (automatic reset) in case of exceeding the
maximum temperature set by the user at the safety controller MB1 I/O board (relay (
-5K1
)) or
at the option under-/overtemperature protection class 3.3 (relay (
-5K2
))
Over temperature protection of the steam boiler:
If the level control of the steam boiler fails, overheating of the humidification module is prevented by the
safety thermostat. It is automatically reactivated after cooling-down.
CAUTION!
If the safety thermostat has triggered, find and remove the
cause of the fault before taking the unit into operation again!
Service Manual KBF (E5.2) 04-2015
113
