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ROUTINE MAINTENANCE
1. Clean the unit air intake fi lter at least every 300 to 350 hours of operation. Clean the fi lters with a mild detergent in
warm water and allow to dry thoroughly before reinstalling.
2. The indoor coil (evaporator coil), the outdoor coil (condenser coil) and base pan should be inspected periodically
(yearly or bi-yearly) and cleaned of all debris (lint, dirt, leaves, paper, etc.). Clean the coils and base pan with a soft
brush and compressed air or vacuum. If using a pressure washer, be careful not to bend the aluminium fi n pack.
Use a sweeping up and down motion in the direction of the vertical aluminum fi n pack when pressure cleaning
coils. Cover all electrical components to protect them from water or spray. Allow the unit to dry thoroughly before
reinstalling it in the sleeve.
NOTE: Units are to be inspected and ser viced by qual i fi ed service per son nel only.
Inspect the indoor blower housing, evaporator blade, condenser fan blade, and condenser shroud periodically (yearly
or bi-yearly) and clean of all debris (lint, dirt, mold, fungus, etc.) Clean the blower housing area and blower wheel
with an antibacterial / antifungal cleaner. Use a biodegradable cleaning agent and degreaser on condenser fan
and condenser shroud. Use warm or cold water when rinsing these items. Allow all items to dry thoroughly before
reinstalling them.
3. Periodically (at least yearly or bi-yearly): inspect all control components, both electrical and mechanical, as well
as the power supply. Use proper testing instruments (voltmeter, ohmmeter, ammeter, wattmeter, etc.) to perform
electrical tests. Use an air conditioning or refrigeration thermometer to check room, outdoor and coil operating
temperatures. Use a sling psychrometer to measure wet bulb temperatures indoors and outdoors.
4. Inspect the surrounding area (inside and outside) to ensure that the units' clearances have not been compromised
or altered.
5. Inspect the sleeve and drain system periodically (at least yearly or bi-yearly) and clean of all obstructions and debris.
Clean both areas with an antibacterial and antifungal cleaner. Rinse both items thoroughly with water and ensure
that the drain outlets are operating correctly. Check the sealant around the sleeve and reseal areas as needed.
6. Clean the front cover when needed. Use a mild detergent. Wash and rinse with warm water. Allow it to dry thoroughly
before reinstalling it in the chassis.
NOTE: Do not use a caustic coil cleaning agent on coils or base pan. Use a biodegradable
cleaning agent and degreaser.
Return Air Grille
Discharge Air Grille
Evaporator Coil
Blower Wheel
Indoor Blower Housing
Condenser Fan Blade
Outdoor Grille
Wall Sleeve
Condenser
Coil
Condenser
Shroud
Compressor
Basepan
Control Panel
Front Cover
Control Door
Filters
Gasket
Gasket
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