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 TM 55-1905-223-24-17
c.
Replace thermostatic switch (11) and knob (6):
(1)
Remove knob (6) from thermostatic switch.
(2)
Remove cover (16) for access to switch and sensing element (15).
(3)
Remove clamp (14) from sensing element (15).
(4)
Remove thermostatic switch (11) with element (15).
(5)
Install new switch with element (15) in place.
(6)
Install cover (16).
(7)
Install knob (6) on thermostatic switch.
d. Replace terminal block (13):
(1)
Remove screws (7) from terminal box cover (12).
(2)
Remove terminal box cover (12) for access to terminal block (13).
(3)
Tag and disconnect electrical wiring from terminal block (13).
(4)
Remove terminal block.
(5)
Install new terminal block (13).
(6)
Connect electrical wiring to terminal block.
(7)
Install terminal box cover (12) with screws (7).
e. Replace heating elements (8):
(1)
Remove screws (2) and cover (16) for access to elements (8).
(2)
Tag and disconnect electrical wiring from elements.
(3)
Remove elements (8) from element support (17).
(4)
Install new elements in support (17).
(5)
Connect electrical wiring to heating elements (8).
(6)
Install cover (16) on heater (1) with screws (2).
f.
Operational check:
(1)
Turn electrical power ON.
(2)
Start and run heater to check operation.
(3)
Remove "Out of Service" tag from circuit.
3-36
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