Trane LPC Install And Operation Instructions page 102

Periodic Maintenance
Checklists
Monthly Checklist
The following check list provides the
recommended maintenance schedule to
keep the unit running efficiently.
WARNING
Live Electrical Components!
During installation, testing, servicing,
and troubleshooting this equipment, it
may be necessary to work with live
electrical components. Have a
qualified licensed electrician or other
individual who is properly trained in
handling live electrical components
perform these tasks. Failure to follow
all electrical components could result
in death or serious injury.
WARNING
Hazardous Voltage w/Capacitors!
Disconnect all electric power,
including remote disconnects and
discharge all motor start/run
capacitors before servicing. Follow
proper lockout/tagout procedures to
ensure the power cannot be
inadvertently energized. For variable
frequency drives or other energy
storing components provided by Trane
or others, refer to the appropriate
manufacturer's literature for
allowable waiting periods for
discharge of capacitors. Verify with an
appropriate voltmeter that all
capacitors have discharged. Failure to
disconnect power and discharge
capacitors before servicing could
result in death or serious injury.
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.
102
Maintenance
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.
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. Check bearing locking collar and
sheave set screws for proper tightness.
3. 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.
4. Check the fan assembly sheave
alignment. Tighten set screws to their
proper torques.
5 Check fan belt tension. Adjust the belt if
it is slipping. Replace if belt is worn or
frayed.
6. Inspect the coils for dirt build-up. Clean
fins if airflow is clogged.
maintenance
procedures
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
openings and drain line to ensure
adequate flow.
5. Rotate the fan wheel and check for
obstructions in the fan housing. The
wheel should not rub on the fan
housing or cutoff. Adjust to center if
necessary and tighten the wheel set
screws per torque recommendations in
Table M-A-1.
6. Examine flex connector for cracks or
leaks.
7 . Repair or replace any damaged duct
material.
Note: Reference the Appendix for
recommended torques for tightening
sheaves, bearing thrust collar, belt,
bearing mounting bolts, sheave set
screw, sheave bushing cap and damper
linkage components.
LPC-SVX01C-EN