5-25. ENVIRONMENTAL CONTROL UNIT.
This task consists of:
General Mechanics Tool Kit, (Appendix B, Section III, Item 1)
General Safety Instructions
Before performing any maintenance actions on electrical equipment, ensure all
electrical power has been turned off. Failure to comply with this warning may
result in serious injury or death.
Remove Electrical Power.
Position ECU remote control mode switch to OFF. See Figure 5-21.
Position Power Panel No. 2 circuit breakers A15CB1, A15CB2, A15CB3, or A15CB4 to OFF.
2. Remove Environmental Control Unit (ECU).
Disconnect two input power cables (1) from ECU (2).
Disconnect drain hose (3) from adapter (4).
Remove two adapters (4 and 5), elbow (6), and nipple (7) from ECU (2).
Remove four bolts (8), washers (9), and eight isolation mounts (10).
Remove 12 screws (11), lockwashers (12), and washers (13) securing flexible duct (14) to ECU (2). Discard
Remove quick release pin (15) from each side of ECU mounting platform to raise hold down bar (16).
Serious injury to personnel or damage to equipment may occur unless two or
more personnel are used to remove ECU because of weight and balance of units.
Carefully move ECU (8) onto pallet or flat-bed truck.
3. Remove Flexible Duct.
Loosen four bolts (17) securing flexible duct (14) to Mod Lab and remove flexible duct.