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Maintenance
Periodic Maintenance Checklist
Every Three to Six Months
■Check greasing on fan and motor.
The following checklist describes the
■Align fan and motor sheaves (pulley).
suggested maintenance schedule to
Tighten sheaves setscrews to the
maintain proper operation of the unit.
proper torque.
Detailed procedures for owner-
operator maintenance checks are
■Check and adjust fan belt tension.
given after this checklist.
■Tighten electrical connection.
WARNING
■lnspect coils for dirt build-up or coil
freeze up
Disconnect electrical power and
allow rotating parts to stop before
Every Year
servicing the unit. Exercise caution
■lnspect the unit casing for corrosion.
if unit must be on for test or
lf damage is found, clean and repaint
maintenance procedures. Failure to
the surface with a rust-resistant primer
do so may result in injury or death
and vinyl chlorinated lacquer.
from electrical shock or moving
parts.
■Clean the fan wheels and fan shaft.
Remove rust with emery cloth and
apply a coat of LPS#3 or an equivalent.
WARNING
■lnspect the condensate drain pan
Disconnect electrical power prior to
and drain line, remove sludge or
foreign materials that might obstruct
access into fan or ductwork. Even
when locked out electrically, fans
proper drainage. Remove obstacles.
may cause injury or damage if the
■Check damper linkages, set-screws
impeller is subject to "windmilling".
The impeller should be secured to
and blade adjustment for proper
damper operation.
physically
restrict rotational
movement can cause severe
■lnspect the control and power box
personal injury or death.
wiring for secure connections and
insulation.
After 48 Hours Operation
■Belts have acquired their
■Rotate the fan wheel and check for
permanent stretch. Readjust but do
obstruction in the fan housing. The
not overtighten.
wheel should not rub on the fan
housing. Adjust the center if necessary
Weekly
and tighten wheel setscrews to the
■Observe unit weekly for any
proper torque.
change
in running condition and any unusual
■Check condition of gasketing and
noise.
insulation around unit, door and
damper.
Every Month or weekly
■Check air filters. Clean or replace if
■Examine flex connections for cracks
clogged or dirty. Change bag filters
or leaks. Repair or replace damage
when pressure drop is 1-inch W.G.
material.
20
Maintenance Plan
IMPORTANT
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.
Small & Medium size fans are
furnished shielded bearings. The
Units operating outside these guideline may require shorter or longer maintenance intervals.
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
21
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