Carrier Packaged and Dedicated Outdoor Air Units 62X

All wiring connections checked and tightened as necessary

Internal wiring checked and replaced as necessary with type THHN 221°F (105°C), 600V, 16-gauge wire or equivalent

Heater control panel checked for dust/dirt and moisture and cleaned as necessary

Heating elements checked for dust/dirt buildup and/or broken elements. Elements replaced and/or cleaned with low pressure air as necessary

Element male/female chassis insulators checked for breaks and/or cracks. Replaced as necessary

Element support frame insulators checked. Missing or broken insulators replaced as necessary

Sign off on the electric heater wiring and wiring connections

Check if small ECWs require maintenance

Check if larger ECWs are greased annually

Check if drive motors require maintenance

Check if belts require adjustment or replacement

Check if seals require adjustment or replacement

Inspect blower wheel and clean as necessary

Check for excessive vibration in blower wheel

Fix scratches on cabinet exterior

Inspect the caulk annually and re-apply as needed

Verify that no flammable objects, liquids, or vapors are present near the unit

Ensure free movement of condensing fans

Check that all fan mounting hardware is tight

Check for blockages in condensate drain pan and drain

Check evaporator coil for dirt and bent fins.

Clean evaporator coil with water from blower side towards filter side.

Check condenser coil for dirt and bent fins.

Clean condenser coil by brushing off with broom.

Check compressors for any maintenance requirement.

Note: Compressors are factory-supplied with a charge of oil and should not require additional maintenance.

Keep the motor clean and vent openings clear.

Before greasing, be sure fittings are clean and free from dirt.

Remove grease relief plug or plate and, using a low-pressure grease gun, pump in the required grease.