30
6. Maintenance
WARNING
!
Moving parts, disconnect power
before servicing.
WARNING
!
High Voltage, disconnect power
before servicing.
The following inspection and cleaning procedures should be performed monthly:
Tools Needed for Maintenance:
Spanner
10mm, 13mm, 17mm
, pneumatic screwdriver
1)
INSPECT PROPELLER
: Check that propeller is secure on drive hub and that
there are no signs of damage. The blades are of a self-cleaning design and should
not require maintenance.
2)
CLEAN
regularly for best results:
• FAN
MOTOR:
Remove any dust accumulation from motor using a brush or
cloth. (DO NOT use a pressure washer). A clean motor will run cooler and last
longer. At the same time, verify that the motor is secure in its mount.
• DAMPER:
Carefully clean dust from damper door and frame so that damper
door opens and closes freely. A brush or cloth should be used.
• GUARD:
Clean any dust or feathers from fan guards using a brush. Dirty guards can reduce
airflow.
3)
CHECK FASTENERS:
For safety, all fasteners should be inspected. Tighten any
loose connections.
4)
INSPECT FAN CONTROL:
With power disconnected, inspect all electrical connec-
tions. Wiring should be secure and in good condition. Remove any dust build-up
from control case and sensor using a soft brush or cloth.
NEVER CLEAN
ELECTRICAL EQUIPMENT WITH A PRESSURE WASHER!
Maintenance
6
.
WARNING
!!
Keep motor body clean. Dust deposit on motor body will lead to overheating and failure of
bearings and motor itself.
Do not use water for motor cleaning. Use compressed air only. Water spraying will cause
rust inside the bearings and lead to their failure.
We recommend to avoid to use water for washing fans since the electric motors and the
bearings of the central hub and centrifugal system support might get damaged by water
infiltration.
In case there is an unbreakable need to use water for cleaning the fans, the electric motor,
the central hub and the centrifugal weight mechanism have to be adequately protected by
water sprays.
!!
WARNING