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Maintenance
NOTE! With all maintenance and service of the
dehumidifier:
•
Switch off the dehumidifier
approximately 15 minutes prior to
opening any service panel, allowing the
heater to cool down.
•
Disconnect the dehumidifier from main
electrical supply by turning the external
switch to the off position.
The maintenance intervals for the dehumidifier
depend on the surrounding environment and
installation site. Recommended maintenance
intervals could therefore differ from one
installation to another. Incorrect maintenance
and service may result in reduced
dehumidification capacity.
Filters
The dehumidifier is equipped with two separate
filter banks, one for the process air and the other
for the reactivation air. The filters are positioned
at the respective inlets and will clean the air prior
to entering the dehumidifier.
Intervals for cleaning or replacement of the
filters will be determined by the amount of dust
and particles in the air at the installation site.
We recommend that the filters are checked at
least once a month.
The unit can be equipped with differential
pressure
measurement
pressure drop over the filters.
Never operate the dehumidifier without the
filters, as the rotor can be damaged by dust.
Rotor
The rotor is maintenance free. However should
it be necessary to clean the rotor the first choice
should be careful use of compressed air. With
severe contamination the rotor can be washed
with water.
© 2016 DehuTech AB - Subject to change without notice
for
checking
the
Cleaning with water is no routine matter, please
contact DehuTech AB or local distributor prior to
this procedure.
Check the rotor bearing and the rotor surface
once a year.
Electrical motors
The electrical motors are equipped with ball
bearings. The bearings are designed to last
the life of the motor and therefore no
maintenance is required.
Check the motors once a year for any
abnormal sound.
Heater
The reactivation electric heater does not need
maintenance, but should be checked twice a
year for any mechanical damage to the heating
elements.
Rotor drive belt
Check the belt tensioning at regular
intervals. The tensioning is maintained
constantly by the belt tension device, and
should not need to be adjusted during
normal operation.
Rotor sealings
Check that the sealings are in the right
position and not damage.
DT-3500 - 9
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