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 TM 55-1905-223-24-18-1
2-152.. Repair Fire Detection Control Panel with Thermostats.
This task covers:
a. Disassembly, b. Repair, c. Assembly.
INITIAL SETUP
Tools
Equipment Condition
T o o l kit, electrician's,
Electrical power to fire detection
control panel OFF at EP 102; circuit
breaker 16 tagged "Out of Service -
Materials/Parts
Do Not Operate."
Lever switch P/N MS-51 (15)
Thermostatic switch P/N 27021-o (15)
Electrical bell P/N BDC-1024
Thermostatic switch P/N 27121-20 (2)
Warning tags, Item 1, Appendix C
WARNING
Notify the bridge that the fire detection
system will be secured for an extended
period of time for maintenance.
DISASSEMBLY
Tag and disconnect electrical leads to thermostatic switches.
a.
Remove mounting hardware securing thermostatic switches to junction boxes
b.
(2).
c.
Remove thermostatic switch (1).
Tag and disconnect electrical leads to lever switches.
d.
Remove mounting hardware on junction box covers (4) securing lever switches.
e.
Remove lever switch (3).
f.
Tag and disconnect electrical leads to lever switches.
g.
Remove mounting hardware securing lever switches to surface mounting boxes
h.
(5).
Remove lever switch (7).
i.
Change 1
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