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 TM9 4120-423-14&P
TEST AND INSPECTION
1
Check that knob is in place, not damaged and secure. Replace knob if missing, cracked or
broken. Tighten setscrew if knob is loose.
2
Using screwdriver and wrench, remove two screws and self-locking cap nuts that retain box to
cover.
3
Pull box away from cover as far as wiring harness will allow.
4
Check that leads are connected, terminals are not bent or broken, and for evidence of
overheating. Replace temperature control if damaged.
5
Using multimeter, check wire leads and temperature control for continuity shorts and opens.
6
Temperature control (A1R1) CW terminal to CCW terminal internal resistance across pins L and
J is approximately 1,000 ohms.
7
Temperature control (A1R1) COM terminal to CW terminal internal resistance across pins K and
L varies from 0 to 1,000 ohms at turn of shaft.
INSTALLATION
1
Place temperature control shaft and positioning tab through holes in cover.
2
Using wrench, secure temperature control with lockwashers and nut.
3
See tags, wire markings, and wiring diagram, and solder leads.
4
Remove tags.
5
Turn temperature control shaft clockwise as far as it will go.
6
Slip knob on shaft with pointer to the extreme WARMER position.
7
Using allen wrench, tighten knob setscrew.
8
Slip box and cover together and align holes.
9
Using screwdriver and wrench, secure box to cover with two screws and self-locking cap nuts.
10
Install remote control assembly in shelter. (See WP0057)
11
Connect power.
END OF TASK
0061 00-3
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