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Maintenance
Maintenance
Periodic Maintenance Checklist
The following checklist describes the
suggested maintenance schedule to
maintain proper operation of the unit.
Detailed procedures for owner-
operator maintenance checks are
given after this checklist.
WARNING
Disconnect electrical power and
allow rotating parts to stop before
servicing the unit. Exercise caution
if unit must be on for test or
maintenance procedures. Failure to
do so may result in injury or death
from electrical shock or moving
parts.
WARNING
Disconnect electrical power prior to
access into fan or ductwork. Even
when locked out electrically, fans
may cause injury or damage if the
impeller is subject to "windmilling".
The impeller should be secured to
physically restrict rotational
movement can cause severe
personal injury or death.
After 48 Hours Operation
■Belts have acquired their
permanent stretch. Readjust but do
not overtighten.
Weekly
■Observe unit weekly for any
change
in running condition and any unusual
noise.
Every Month or weekly
■Check air filters. Clean or replace if
clogged or dirty. Change bag filters
when pressure drop is 1-inch W.G.
Every Three to Six Months
■Check greasing on fan and motor.
■Align fan and motor sheaves (pulley).
Tighten sheaves setscrews to the
proper torque.
■Check and adjust fan belt tension.
■Tighten electrical connection.
■lnspect coils for dirt build-up or coil
freeze up
Every Year
■lnspect the unit casing for corrosion.
lf damage is found, clean and repaint
the surface with a rust-resistant primer
and vinyl chlorinated lacquer.
■Clean the fan wheels and fan shaft.
Remove rust with emery cloth and
apply a coat of LPS#3 or an equivalent.
■lnspect the condensate drain pan
and drain line, remove sludge or
foreign materials that might obstruct
proper drainage. Remove obstacles.
■Check damper linkages, set-screws
and blade adjustment for proper
damper operation.
■lnspect the control and power box
wiring for secure connections and
insulation.
■Rotate the fan wheel and check for
obstruction in the fan housing. The
wheel should not rub on the fan
housing. Adjust the center if necessary
and tighten wheel setscrews to the
proper torque.
■Check condition of gasketing and
insulation around unit, door and
damper.
■Examine flex connections for cracks
or leaks. Repair or replace damage
material.
IMPORTANT
Small & Medium size fans are
furnished shielded bearings. The
bearings are lubricated for life
and maintenance free. If re-
lubrication is necessary, on larger
fans it is recommended to use a
lithium base grease suitable for all
temperatures within the
operational limits.
Maintenance Plan
The following table (see Table 1) gives recommended maintenance intervals for the CLCP unit. Intervals are base
upon normal running conditions, in a moderate climate, and assuming 24 hour running.
Units operating outside these guideline may require shorter or longer maintenance intervals.
Table 1 - Recommended Maintenance Intervals
Component
Fan / Motor
Filter
Coils
Humidifiers
Dampers
Attenuators
Inlet / Outlet
Energy Recovery Componetnts
Controls
Check the following
Fan In General
For Corrosion
Flexible Connection
Anti-Vibration Mounts
Drainage
Fan Bearing
Motors In General
Motor Bearing
Belt Drive In General
Panel Or Bag Filters
Roll Filters
Fin Block / Fin Bundle
Frost Protection
Drainage
Drop Eliminator
Steam Coils
Scaling
Condensate Drain
Dampers
Scilencers
Hoods And Louvers
Plate Heat Exchangers
Themal Wheel
Control Box And Wiring
Weekly
Yes
Yes
Yes
Monthly
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
3 - 6 Monthly
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Annual
Yes
Yes
Yes
Yes
Yes
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