Allied Air Enterprises 4AC16LT manual Maintenance, Indoor Coil, Indoor Unit

MAINTENANCE

WARNING

Before performing maintenance operations on system, turn the electric power to unit OFF at disconnect switch(es). Unit may have multiple power supplies. Electrical shock could cause personal injury or death.

Maintenance and service must be performed by a quali- fied installer or service agency.

At the beginning of each cooling season, the system should be checked as follows:

1.Clean and inspect condenser coil. Coil may be flushed with a water hose. Be sure the power is off before using water to clean the coil.

2.Outdoor fan motor is pre-lubricated and sealed. No further lubrication is needed.

3.Visually inspect connecting lines and coils for evi- dence of oil leaks.

4.Check wiring for loose connections.

5.Check for correct voltage at unit (with unit operating).

6.Check amp-draw outdoor fan motor.

Unit nameplate _________ Actual _________

NOTE – If owner complains of insufficient cooling, the unit should be gauged and refrigerant charge checked. Refer to the Refrigerant Charging section on page 12.

Indoor Coil

1.Clean coil, if necessary.

2.Check connecting lines and coils for evidence of oil leaks.

3.Check condensate pan line and clean, if necessary.

Indoor Unit

1.Clean or change filters.

2.Adjust blower speed for cooling. Measure the pressure drop over the coil to determine the correct blower CFM.

3.Belt drive blowers: Check belt for wear and proper tension.

4.Check all wiring for loose connections.

5.Check for correct voltage at unit (with unit operating).

6.Check amp-draw on blower motor.

Unit nameplate _________ Actual _________

506467-01 Issue 1008 Page 20