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ARMY TM 9-4210-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
6-22. EVAPORATOR COIL REMOVAL
This task covers:
Repair
Removal
Installation
INITIAL SETUP:
Tools:
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Gloves, chemical (Appendix C)
Personnel: 2
Material:
Rags (Item 12, Appendix E)
Equipment Conditions:
WARNING
Disconnect Input power to the air conditioner before performing any internal maintenance. Voltages
used can KILL Shutting the unit off at the control panel does not disconnect unit power.
1.
Disconnect air conditioner input power at source.
2.
Remove left front evaporator panel (para 4-23).
3.
Remove right front evaporator panel (para 4-25)
4.
Remove rear evaporator panel (para 6-6).
5.
Discharge system (para 5-12).
6.
Remove evaporator motor (para 4-70).
7.
Remove evaporator circulator fan (para 4-71).
8.
Remove plastic heater protector (para 4-80).
9.
Remove solenoid (12) coil, power head and nut securing solenoid to bracket (para 5-35).
10.
Remove solenoid coil (L1) from solenoid value and set aside (para 4-88).
11.
Remove power head, cage assembly, and sensing bulb from primary expansion valve (para 5-38).
REPAIR
General Support Maintenance repair of the evaporator coil is limited to checking for leaks and brazing damaged tubing
(para 5-15 and 5-14).
REMOVAL (See Figure 6-16)
NOTE
· Two persons are required for removing control box
· Access is needed to rear of air conditioner.
1.
Remove screw (24), locknut (18), and two flat washers (20) securing control box wiring harness clamp (1) (see
Figure FO-5).
2.
Remove four screws (23), lockwasher (22), flat washers (21), and bracket (19).
3.
Remove control box (para 4-63) from side of coil and set on top of frame.
4.
Remove four bolts (6), locknuts (4), eight flat washers (3) and (5) from shock mounts.
5.
Remove evaporator motor and fan mounting bracket.
6.
Remove four screws (29), lockwashers (28), flat washers (40) mounting heater assembly (27) to unit frame (32).
7.
Remove four rivnuts (26) from unit frame (32) and coil frame (25).
6-37
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