System Maintenance
CAUTION:
Be certain all electrical power to the unit is disconnected beforeperformingthefollowing recommended maintenance.
Proper maintenance is most important to achieve the best performance from the appliance and should be performed by a qualified service technician at least once a year.Follow the maintenance schedule and the instructions below for years of safe, trouble free operation.
•Do not place combustible materials on or against the cabinet.
•Do not store gasoline or any other flammable vapors and liquids in the vicinity of the unit.
•Annually inspect the physical support of the unit to ensure that it is physically sound without sagging, cracks, gaps, etc., around the base so as to provide a seal between the support and the base.
•Annually inspect the return- air connection to ensure that it is physically sound and is still sealed to the casing of the unit.
•Annually inspect the unit and ductwork for signs of physical deterioration.
•Always replace the doors on the unit after servicing. Do not operate the unit without all doors and covers in place.
1. Regular Cleaning:
CAUTION:
Do not strike any of the internal electrical components while cleaning.
•Remove any debris from the outdoor coil, being careful not to damage the aluminum fi ns.
•Check for and remove any obstructions to condenser airfl ow.
•Clean the blower compartment regularly during the heating and cooling seasons to remove any dust that may have accumulated in the compartment or on the blower and motor. Buildup of dust on the blower and motor can create excessive loads on the motor resulting in higher than normal operating temperatures and possible shortened service life.
2. Air Filters:
WARNING!
Never operate the unit without a filter in the return air system. Dust and lint in the return air can build up on the internal components, resulting in a loss of efficiency, equipment damage, and possible fire risk.
6, 7½ and 10 ton rooftop package units are factory equipped with pleated 2” disposable fi lters. The fi lters should be checked periodically and replaced (or cleaned) when necessary with
filters of the same dimensional size. Replace using disposable fi lters with a minimum airfl ow rating of 500 FPM or permanent filters only.The filter rack is fi eld adjustable to accommodate 1” permanent fi lters. DO NOT use 1” disposable fi lters in these units.
NOTE: Filters must be ULC approved or equivalent for use in Canada.
Always replace the filter access panels after changing or cleaning the filters. Do not operate unit without the filter access panels in place.
3. Motor Lubrication:
WARNING!
Lubrication of the motors in this unit is not required. Do not lubricate any motor in this product.
The motors for the circulating air blower and outdoor fan are
3
