The minimum maintenance requirements for this equipment are as follows:
1. Inspect air filter(s) each month. Clean or replace when necessary.
2. Inspect indoor coil, drain pan, and condensate drain each cooling season for cleanliness. Clean when necessary.
3. Inspect blower motor and wheel for cleanliness each cooling season. Clean when necessary.
4. Check electrical connections for tightness and controls for proper operation each cooling season. Service when
necessary.
5. Ensure electric wires are not in contact with refrigerant tubing or sharp metal edges.
Air Filter - Important
: Never operate the unit without a suitable air filter in the return-air duct system. Always replace
the filter with the same dimensional size and type as originally installed. See Physical Data for recommended filter
sizes. Inspect air filter(s) at least once each month and replace (throwaway-type) or clean (cleanable-type) at least
twice during each cooling season and twice during the heating season if electric heat is installed, or whenever the filter
becomes clogged with dust and lint.
Unit Top Removal - Note
: When performing maintenance or service procedures that require removal of the unit top,
be sure to perform all of the routine maintenance procedures that require top removal, including coil inspection and
cleaning, and condensate drain pan inspection and cleaning.
Only qualified service personnel should perform maintenance and service procedures that require unit top removal.
Refer to the following top removal procedures:
1. Unplug all three wires from the outdoor fan motor.
2. Remove 5 screws on outdoor fan grille. (Save all screws.)
3. Remove 6 screws on unit top cover surface. (Save all screws.)
4. Remove 4 screws on unit top cover flange. (Save all screws.)
5. Lift top from unit carefully. Set top on edge and make sure that top is supported by unit side that is opposite
duct (or plenum) side.
Indoor Blower and Motor - Note
: All motors are pre-lubricated. Do not attempt to lubricate these motors.
For longer life, operating economy, and continuing efficiency, clean accumulated dirt and grease from the blower
wheel and motor annually.
WARNING
ELECTRIC SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
1. Turn off electrical power to the unit and install lockout tag before performing any maintenance or service on
this unit. 2. Use extreme caution when removing panels and parts. 3. Never place anything combustible either on
or in contact with the unit.
CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment damage or improper operation.
Errors made when reconnecting wires may cause improper and dangerous operation. Label all wires prior to
disconnecting when servicing.
WARNING
ELECTRIC SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Disconnect electrical power, and install lockout tag to the unit before removing top.
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