Routine Maintenance
Schedule
Every 6 Months
Every 12 Months
Comments
1. Examine the airways in to
the fan guards (if fitted)
*
Remove and debris that may have
accumulated round the guards
2. Examine motor cooling fins
*
Remove any material / dirt build-up
between the motor fins
3. Examine impeller for dirt
build-up or any physical
damage
*
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)
*
Clean safety supports. Replace them if
there is any deterioration / corrosion
5. Examine and operate
vibration sensors (if fitted),
and temperature sensors (if
fitted)
*
Check operation using built-in sensor test
features or dummy signals. Check that
the fan is automatically switched off, or a
warning indication is provided, when the
sensors / switches indicates a fault
6. Examine condition of
safety guards (if fitted) and
their fixings
*
Clean safety guards. Replace them if there
are any signs of damage
7. Check operation of
anti-condensation heaters (if
fitted)
*
Switch off power to the motor. Check that
the anti-condensation heater is energised
(drawing current)
8. On ‘bifurcated’ motors
remove the impeller and
inspect the packing located
behind the motor shaft-seal
retaining plate
*
Replace the 130mm Duramid seal if it is
damaged
9. Examine the clearance
between the fan impeller
blade tips and the fan duct.
Check the angle, and the
security of the impeller
blades
*
Ensure that the gap between the impeller
blade ends and the fan duct is even and
adequate. If in doubt about the gap contact
Flakt Woods for advice. Ensure that the
impeller blade is secure. The blade angle
must not be changed before contacting
Flat Woods Ltd for advice
10. Check torque of fan-to-
support fixings
*
It is essential to confirm that all fixings are
properly fitted, are tight, and are fully
driven home (see Paragraph 6.1) If in doubt
about the torque of a fixing contact Fläkt
Woods Ltd for advice
11. Examine motor, fan and
ancillary equipment fixings
*
It is essential to confirm that all fixings are
properly fitted, are tight, and are fully
driven home (see Paragraph 6.1) If in doubt
about the torque of a fixing contact Fläkt
Woods Ltd for advice
12. Check movement of
vibration isolators (if fitted)
*
Check freedom of movement. Tighten
fixings if necessary
13. Check motor voltage and
current consumption
*
Ensure voltage and full load current are as
specified on the motor nameplate
14. Inspect paintwork /
galvanising
*
Treat any areas of damage with suitable
anti-corrosion paint
15. Grease motor bearings
*
Check requirement in accordance with
paragraph 6.3
16. Check fan assembly
wiring
*
Check security and condition of all wiring
(including the earth)
TABLE 1
9
