MAINTENANCE
5.
Maintenance
5.1
Regreasing the engine plain bearings
When the actuator has reached a high number of cycles,
there can be increased lubricant consumption in the sin-
ter metal plain bearings of the shaded pole motor. This
leads to a significant loss of motor power or even stand
-
still. As a result, it is recommended for the plain bearings
to be regreased in good time if these symptoms occur.
CAUTION
There is a possibility of electric shock.
Before opening the motor, safely disconnect it
from the electrical power system!
Type STA actuators
Fig. 01
If sticking of the flap has already been identi
-
fied, the actuator must be renewed.
The bearings must be regreased with
Ballis-
tol Universal Oil
, as using other oils can lead
to complete failure of the motors.
1
2
1.
To remove the supply air damper, unscrew the fixing screws
(1)
2. Unscrew both cover screws (2) and pull off the cover to the
back.
50
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