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 TM5-4120-384-14
4-29. CONTROL CIRCUIT BREAKER CB2.
The CONTROL CIRCUIT BREAKER is located in the junction box.
(See fig. 4-25.)
Disconnect input power from the air conditioner
before performing maintenance on any part of the
electrical system.
The voltages used can be lethal.
Test.
a.
(1)
Disconnect
power
at
power
source.
(2)
See
and
remove
control
module.
(3) Remove top front cover on F18H-3S and F18H-1S or top
cover on F18H-3SA and F18H-3SB (para 4-11).
(4)
Remove seven screws
and
lock
washers
and
carefully
slide
junction
box out of unit.
(5)
Tag
and
disconnect
leads.
(6) Check that there is continuity between
the
two
terminals
with
the circuit breaker in the on position.
(7) Check that there is no continuity
between
terminals
with
the
circuit breaker in the off position.
Removal.
b.
(1)
Remove
attaching
nut
and
hardware
from
front
of
panel.
(2)
Slip
circuit
breaker
from
back
of
panel.
Replace.
Replace CONTROL CIRCUIT BREAKER if defective.
c.
Installation.
d.
(1) Slip circuit breaker into hole in panel being sure that
Secure with nut and locking
locating pin fits into hole in panel.
hardware provided with circuit breaker.
(2) See the wiring diagram
and
tags
and
connect
the
wire leads.
Remove tags.
(3) Carefully slide junction
box
into
place
and
secure
with
seven screws and lock washers.
Change 2
4-83
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