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48
Maintenance
Periodic Maintenance
Checklists
Monthly Checklist
The following check list provides the
recommended maintenance schedule to
keep the unit running efficiently.
WARNING
Hazardous Voltage!
Before servicing unit disconnect all
electrical power including remote
disconnects. Follow proper lockout/
tagout procedures to ensure power
cannot be inadvertently energized.
Failure to disconnect power before
servicing can cause death or serious
injury.
WARNING
Rotating parts!
Secure drive sheaves to ensure
motor cannot freewheel. Failure to do
so can cause severe personal injury
or death.
1. Inspect unit air filters. Clean or replace
if airflow is blocked or if filters are dirty.
2. Check the condition and tension of fan
belts. Adjust tension if belts are floppy
or squeal continually. Replace worn or
fraying belts in matched sets.
Note: Check and adjust belt tension at
least twice daily the first days of new
belt operation. Belt tension will rapidly
decrease until the belts are run in.
3. Re-lubricate motor bearings, if motor is
fitted with oil tubes and operating
conditions include moist or dirty air,
continuous duty and/or high
temperatures.
Maintenance
Procedures
Semi-Annual Maintenance
1. Verify the fan motor is properly
lubricated. Follow lubrication
recommendations on the motor tag or
nameplate. Contact the motor
manufacturer for more information.
2. With power disconnected, manually
rotate the fan wheel to check for
obstructions in the housing or
interference with fan blades. Remove
any obstructions and debris.
3. Check the fan assembly sheave
alignment. Tighten set screws to their
proper torques.
4. Check fan belt tension. Adjust if belt is
slipping. Replace if belt is worn or
frayed.
5. Inspect the coils for dirt build-up. Clean
fins if airflow is clogged.
Annual Maintenance
Check and tighten all set screws, bolts,
locking collars and sheaves.
1. Inspect, clean, and tighten all electrical
connections and wiring.
2. Visually inspect the entire unit casing
for chips or corrosion. Remove rust or
corrosion and repaint surfaces.
3. Clean fan wheels and fan shaft.
Remove any rust from the fan shaft
with an emergy cloth and recoat with
L.P .S. 3 or equivalent.
4. Inspect the drainpan for sludge or
other foreign material. Clear the drain
openins and drain line to ensure
adequate flow.
5. Rotate the fan wheel and check for
obstructions in the fan housing. The
wheel should bnot rub on the fan
housing or cutoff. Adjust to center if
necessary and tighten the wheel set
screws per the torque
recommendations in Table M-MP-1 on
page 43.
6. Examine flex connector for cracks or
leaks.
7. Repair or replace any damaged duct
material.
BCXC-SVX01A-EN
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