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TM 55-1905-223-24-17
3-11. Repair Heater, Duct Type, Stationary (Duct #1)
This task covers:
a. Removal
b. Repair
c. Replacement.
INITIAL SETUP :
Tools:
Equipment Condition
Tool kit, general mechanic's,
Circuit breaker switched OFF, power
panel locked "Out of Service -
Tool kit, electrician's,
Do Not Operate."
See TM 55-1905-223-10 for HVAC
Materials / Parts
systems operation and equipment
location.
Tags, Item 1 Appendix C
Control contactor P/N C133-011
Control transformer P/N C316-022
Control contactor P/N C123-021
Thermostatic switch P/N C241-005
Thermostatic switch P/N C231-042
Thermostatic switch P/N C232-038
REMOVAL
WARNING
Make sure electrical power is OFF to avoid personal injury.
a.
Open terminal box doors (5, 7, FIGURE 3-1).
b.
Tag and disconnect electrical power supply wiring to heater (2).
c.
Tag and disconnect thermostat wiring to the heater (2).
d.
Withdraw power supply and thermostat wires from the terminal box.
e.
Remove the mounting screws (1) holding heater to ducting.
f.
Slide the heater (2) from the ducting.
Change 3
(3-16.2 BLANK)/3-16.1

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