0047 00
TM 1-4920-436-13&P
REMOVAL CONTINUED
ECU POWER CABLE CONTINUED
WARNING
HIGH VOLTAGE exists in electrical system of shop. All electrical inspections, repairs, or
replacements will be performed with power OFF and only by a qualiied electrician. Serious
shock hazards exist which could result in INJURY OR EVEN DEATH to personnel.
NOTE
This procedure covers obsolete NQOB circuit breaker panel and new NQOD circuit breaker
panel. These units are distinguishable by nameplates attached to panel boards.
1.
Move all circuit breaker switches to the OFF position.
2.
Tag and disconnect shelter electrical power.
3.
Remove panel cover from circuit breaker box (Figure 2, Item 2).
4.
To remove panel cover and board:
a.
NQOD - Remove four screws and four washers and lift circuit breaker panel cover from panel board.
b.
NQOB - Move clamp ingers to OPEN position and lift circuit breaker panel cover from panel board.
5.
Disconnect ECU power cable (Figure 2, Item 6) from 30 amp, 240V, three pole circuit breaker (Figure 2, Item
5).
6.
Disconnect neutral from circuit breaker box terminal strip (Figure 2, Item 3).
7.
Disconnect ground wire from ground terminal strip (Figure 2, Item 4).
8.
Loosen compression nut (Figure 2, Item 1) on box connector at circuit breaker box (Figure 2, Item 2) and pull
ECU power cable (Figure 2, Item 6) through and out of box connector.
INSTALLATION
ECU POWER CABLE
Personnel End
1.
Pull ECU power cable (Figure 2, Item 6) through box connector and tighten compression nut (Figure 2, Item
1) after ECU power cable (Figure 2, Item 6) has been positioned with length (approximately 36 inches) of
wire.
2.
Attach ECU power cable wires to circuit breaker with neutral and ground wires to corresponding terminal
strip (Figure 2, Item 3 or Figure 2, Item 4).
3.
Replace circuit breaker panel board and cover onto circuit breaker box (Figure 2, Item 2).
4.
Move main circuit breaker to ON position.
REPAIR OR REPLACEMENT
ECU POWER CABLE
Cargo End
1.
Repeat Remove and Install procedures of Personnel End to replace ECU power cable (Figure 2, Item 6) for
cargo end of shelter.
2.
Using electrical tape, attach a length of ibrous twine or 1/4 inch rope approximately 25-30 feet long to end of
ECU power cable. This will be the end just removed from circuit breaker box (Figure 2, Item 2).
0047 00-4
