TM 5-4220-227-14
4-32. Power Supply, 28V
This task covers:
Replace
INITIAL SETUP
Tools
Equipment Condition (Cont)
General Mechanic's Tool Kit
Single light power source removed (para. 4-40).
(NSN 5180-00-177-7033)
Communicator assembly removed (para. 4-43).
Portable oxygen analyzer removed (para. 4-34).
Materials/Parts
Thermocouple meter and temperature probe removed
(para. 4-35).
Power Supply
Personnel Required:
Equipment Condition
Two
Chamber shut down (para. 2-15).
Double Light power source removed (para. 4-38)
Replace. (figure 4-15)
(1)
Unlatch two latches (1), open enclosure door (2) and install two supports (3), and pins (4).
(2)
Remove electrical plug (5) from six plug receptacle power module (6).
(3)
Remove ten nuts (7), lockwashers (8), and screws (9) and pull control panel cover (10) out far enough to reach
power supply (11).
(4)
Tag and disconnect electrical leads (12) from switches (13) and fuse (14).
(5)
Remove electrical control panel cover (10).
(6)
Tag and disconnect electrical lead (15) from terminal board (16) on power supply (11).
(7)
Remove four screws (17) and remove power supply (11).
(8)
Install power supply (11) and secure with four screws (17).
(9)
Connect electrical leads (15) to terminal board (16) on power supply (11).
(10)
Hold control panel
(11)
Install electrical control panel cover (10) and secure with ten screws (9), lockwashers (8), and nuts (7).
(12)
Install electrical plug (5) into six plug receptacle power module (6).
(13)
Remove two pins (4), supports (3), close enclosure door (2), and secure with two latches.
4-40
