16
Routine Maintenance Schedule
Every 6
Months
Every 12
Months
Comments
1. Examine fan guards (if fitted)
3
Remove any debris that may have accumulated round or on the
guard surface.
2. Examine motor cooling fins
3
Remove any material or dirt which has build-up between the
motor cooling fins.
3. Examine impeller for dirt build-up or
any physical damage
3
Remove any build-up of dirt. Ensure impeller is secure.
Replace impeller if it is damaged.
4. Check condition and tautness of fan safety
support chains / harnesses / ropes (if fitted)
3
Clean and inspect safety supports. Replace if there is any
deterioration / corrosion detected.
5. Examine and operate vibration sensors
(if fitted), and temperature sensors
(if fitted)
3
Check operation using built-in sensor test features or dummy
signals. Check that the fan is automatically switched off, or that
a warning indication is provided, when the sensors / switches
indicates a fault.
6. Examine condition of safety guards
(if fitted) and associated fasteners
3
Clean safety guards. Replace if there are any signs of excessive
corrosion or damage
7. Check operation of space heater / anti-
condensation heaters (if fitted)
3
Switch off power to the motor. Check that the anti-condensation
heater is energised (i.e. it is drawing current).
8. Examine the clearance between the
fan impeller blade tips and fan housing.
Check the angle, and the security of
the impeller blades
3
Ensure that the gap between the impeller blade ends and the fan
housing is even and adequate. If in doubt, please contact Woods
Air Movement USA for advice related blade tip gap. Ensure that
the impeller blades are secure. Blade angle must not be changed
before contacting Woods Air Movement for advice.
9. Check torque of fixings used to secure
the fan to its support structure.
3
It is essential to confirm that all fixings are properly fitted, are
tight, and are fully driven home (see Paragraph 17.1). If in doubt,
please contact Woods Air Movement USA for advice related to the
torque value of a particular fastener.
10. Examine motor, fan and ancillary
equipment fixings
3
It is essential to confirm that all fixings are properly fitted, are
tight, and are fully driven home (see Paragraph 17.1)
If in doubt about the torque of a fastener contact Woods Air
Movement USA Ltd for advice.
11. Check movement (deflection) of
vibration isolators (if fitted)
3
Check freedom of movement. Tighten anti-vibration mount
fixings if necessary.
12. Check motor voltage and current
consumption
3
Ensure voltage and full load current are as specified on the
motor nameplate
13. Inspect paintwork / galvanising finish
3
Treat any areas of damage with suitable anti-corrosion paint.
14. Grease motor bearings
3
Check requirement in accordance with paragraph 17.2
15. Check fan assembly wiring
3
Check security and condition of all wiring
(including the earth).
16. Check fan operation for excessive
vibration levels
3
Vibration levels, whilst the fan is operating, should not be
excessive. If levels are seen to have increased since the previous
inspection, the fan must not be operated until the root cause
has been identified and rectified.
TABLE 1
Summary of Contents for 911025
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