Air Conditioner User Manual

MAINTENANCE AND REPAIR

1. CONTROL TRANSFORMER

This item is located in the electrical enclosure. It may be replaced

while in the enclosure. To service or replace remove the quick

connect wires and mark their locations. Remove two screws

which hold the transformer in place. Note transformer orientation

and voltage labels on top. Replace transformer in the same orien-

tation and connect wires. Replace the cast aluminum cover and

bolt down.

2. CONTACTOR

This component can be removed from the base plate while in the

enclosure. Follow the same steps as indicated for the transformer

replacement.

3. ALARM PILOT LAMP (OPTIONAL)

To replace the bulb, unscrew the red lens bezel while holding the

lock ring until disengaged. Avoid turning the entire assembly

which is held tight to the enclosure with a locking nut on the

inside of the enclosure. It must be re-tightened if loosened before

reuse. Replace the lamp with a 656 type bulb at the correct control

voltage for the unit (120V or 24). Secure the lens cap (5 threads

minimum) against the locking ring and tighten securely before re-

energizing unit. Lamp should flash on momentarily when unit is

energized. See renewal parts section for part number of replace-

ment bulbs.

Figure 14

CXH-A with Built in Disconnect Switch

(Must use HMK-00 Ceiling Mounting Kit)

Figure 15

CXH-A with Built in Thermostat

RENEWAL PARTS IDENTIFICATION

Publication Number Title

PF458 Mounting Kits for Model CXH-EP

PF461 Material Safety Data Sheet Chromakool EG

PF462 Material Safety Data Sheet Chromakool PG