80 FAXA-SVX01B-EN
Maintenance
periodic
checklists
Periodic Maintenance
Checklists
Monthly Checklist
The following checklist provides the
recommended maintenance schedule to
keep the unit running efficiently.
WARNING
Hazardous voltage!
Disconnect all electrical power
including remote disconnects before
servicing unit. Follow proper lockout/
tagout procedures to ensure power
cannot be inadvertently energized.
Failure to do so can cause death or
serious injury.
WARNING!
Disconnect gas supply!
Before servicing unit, FIRST turn off
the gas supply. Failure to turn off the
gas supply can cause death or serious
injury.
1. Inspect unit air filters. Clean or replace
if airflow is blocked or if filters are dirty.
2. Inspect coils for icing. Icing on the coils
may indicate low airflow supply,
restricted airflow from dirty fins,
evaporator frost protection sensor
problems, or a shortage of refrigerant
flowing through the coil.
3. Check the condition and tension of fan
belt. Adjust tension if belt is floppy or
squeals continually.
4. Verify the total energy wheel seals
have not become worn or damaged.
Replace as necessary.
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.
5. Check and record operating pressures
6. Inspect and clean total energy wheel as
needed.
Semi-Annual Maintenance
1. Verify the fan motor is properly aligned
and bolted tight to the motor frame.
2. Lubricate fan bearings with any of the
following types grease:
• NLGI N°3
• Mobil - Mobilux EP3
• ESSO - Beacon 3
• Shell - Alvania FET3
• Fina - Marson HTL3
3. With power disconnected, manually
rotate the fan wheel to check for
obstructions in the housing or
interference with fan blades or inlet
guide vane option. Remove
obstructions and debris. Center the fan
wheel if necessary.
4. Check the fan assembly sheave
alignment. Tighten set screws to their
proper torques.
5. Check the total energy wheel linkage
belt tightness. Adjust as necessary.
Note: Perform this procedure monthly if
the unit is in a coastal or corrosive
environment.
Annual Maintenance
Check and tighten all set screws, bolts,
locking collars and sheaves.
1. Inspect, clean, and tighten all electrical
connections.
2. Visually inspect the entire unit casing
for chips or corrosion. Remove rust or
corrosion and repaint surfaces.
3. Visually check for leaks in refrigerant
piping.
4. Inspect fan, motor, and control contacts.
Replace badly worn or eroded contacts.
5. Inspect the thermal expansion valve
sensing bulbs for cleanliness, good
contact with the suction line, and
adequate insulation from ambient air.
Note: For units with gas heat, refer to
the Reznor Installation Form RGM 401
for proper maintenance procedures of
gas heaters.
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