Exhaust Fans.

TM 43-0156

Step

Function

Mech

Insp

(f) Remove relay covers and place barrier (8135-00-

cont

226-3124) between disk and magnets. Set the pro-

tective relay time dial settings to zero. Secure

the relay covers with wire (9505-00-222-3829).

(g) Rack breakers into place and secure with blocks

(25-1/2 x 2 x 4) (17 x 2 x 4) (5-3/4 x 2 x 4) to

prevent movement.

(h) Pack fuses from each cabinet as follows:

1 Wrap fuses with barrier (8135-00-226-3124) and

place in plastic bags (8105-00-902-6508) according

to rating. Heat seal or staple bags. Mark bags

with rating of fuses.

2 Place bagged fuses in a fiberboard box (12 x 12 x 4).

3 Secure each box in each cabinet with tape (7510-

00-916-9659). Tape 7510-00-890-9875 may be used

as a substitute.

(i) Coat electrical contacts and terminals with coat-

(2)

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.

(3)

(a) Remove a bolt from each side of the exhaust fan

louvers.

(b) Place bolts into a plastic bag (8105-00-902-

6508). Heat seal or staple and mark to identify

contents.

may be used as a substitute.

(d) Cover louvers with barrier (8135-00-282-0565) and

5/16-inch plywood (5530-00-618-6955) (20 x 20) and

secure with machine bolts (5305-00-071-2233) (1/4

x 3 NC). Plywood 3/8-inch (5530-00-618-6956) may

be used as a substitute.

(e) Seal edges with tape (7510-00-916-9659). Tape 7510-

00-890-9875 may be used as a substitute.

Change 1

B-3-56