TM 9-4110-256-14
4-23. FUSES F1 AND F2 TESTING AND REPLACEMENT.
This task covers:
a. Testing
b. Removal
c. Installation
INITIAL SETUP
General Safety Instructions:
Equipment Conditions:
Refrigeration unit shut down (para 2-7) and power
WARNING
disconnected.
High voltage and exposed rotating parts are used in the
Control panel cover open.
refrigeration unit. Personal injury can result if power is
connected.
Materials/Parts:
Lock Washers (2)
1, Appendix G
Marker Tags (4)
7, Appendix E
a. Testing. (See Figure 1-4.)
(1)
Be sure power has been disconnected at the source and remove two bolts (1) and lock washers (2). Open
control box cover (3). Discard lock washers.
(2)
Remove two fuses (4).
(3)
Using multimeter set to measure continuity, check each fuse (4) continuity between ends. Continuity
should be indicated. If no continuity was indicated, replace fuse (4).
(4)
If fuse block (5) is damaged, replace it.
(5)
If no failure was indicated, install two fuses (4), close control box cover (3) and install two new lock
washers (2) and bolts (1).
b. Removal.
(1)
Be sure power has been disconnected at the source and remove two bolts (1) and lock washers (2). Open
control box cover (3). Discard lock washers.
(2)
Remove two fuses (4).
NOTE
Terminal hardware is supplied with fuse block.
(3)
Tag wire lead terminals (6) and remove four screws (7), lock washers (8), and wire lead terminals.
(4)
Remove two screws (9) and fuse block (5).
4-45
