How to service dampers
Introduction
There are different kinds of dampers, but they are serviced in the same way.
Intervals
Once annually.
Before start
No special tools are needed.
Warning!
Do not forget to disconnect all current to the unit and the unit parts before service!
Exception from
service
The bearings into which the damper plates are fixed do not need lubrication.
Illustration
Dampers:
Bypass damper
Louver damper
Procedure
Do as follows to service the dampers:
Step
Action
1
Clean the damper louvers
2
Check that the rubber gaskets are fixed and intact
3
Check that the damper louvers can rotate when the damper motor is running
and that they close/open completely
4
Check the fixing of the motor/damper shaft
5
Check that the damper setting is in accordance with the current operation
mode
6
Adjust the damper motor (or the bars connected to the motor), if the damper
does not close tightly
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