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TM 43-0156
Step
Function
Mech
Insp
2
(b) Install phase barriers back onto the breakers.
cont
(c) Fabricate PPP-B-601 boxes (23 x 21 x 33) for the
arc chutes in accordance with appendix D-1. Refer
to table B-3-1 for list of materials.
(d) Wrap the arc chutes with PPP-C-843 cushioning.
(e) Place arc chutes into the box, three chutes per box.
(f) Isolate the arc chutes from the sides of the box
and each other by using MM-L-751 lumber (21 x 2 x 4).
(g) Seal box and mark the containers to identify contents.
(h) Remove relay covers and place MIL-B-121 barrier
between disk and magnets. Set the protective
relay time dial settings to zero. Secure the
relay covers with QQ-W-461 wire.
(i) Rack breakers into place, and block with MM-L-751
lumber (25-1/2 x 2 x 4) (17 x 2 x 4) (5-3/4 x 2 x
4) to prevent movement.
(j) Pack fuses from each cabinet as follows:
1 Wrap fuses with MIL-B-121 barrier (18 x 12) and
place in MIL-B-117 bags according to rating. Heat
seal bags. Mark bags with rating of fuses.
2 Place bagged fuses in a PPP-B-636 fiberboard box
(12 x 12 x 4).
3 Secure each box in cabinet with MIL-T-22085 tape.
PPP-T-60, type 4, 4-inch wide tape may be used as
a substitute.
(2)
Coat electrical contacts and terminals with
MIL-C-83360 coating compound.
(3)
Electrical Cabinet Doors. Secure breaker cabinet
doors with frame (item A, fig. B-3-1). Refer to
table B-3-2 for a list of materials.
(4)
Exhaust Fans.
(a) Remove a bolt from each side of the exhaust fan louvers.
(b) Place bolts into a bag fabricated from MIL-B-131
barrier. Heat seal and mark to identify contents.
Change 1
B-3-9

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