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TM 5-4120-393-14
4-57. Heater Thermostat (S3) (cont)
NOTE
For full operational test of thermostat use an external heat source. Thermostat
o
o
should open (no continuity across contacts) at temperature increase of 194 F 9
0
o
o
o
o
o
(90 C 5 ) and close at temperature decrease at 142 F + 16 (61 C + 9 ).
INSTALLATION
1.
Using screwdriver and wrench, secure thermostat (4) to bracket with two screws (1), washers (2), and nuts (3).
2.
See tags and wiring diagram, para 4-13, and connect wire leads.
3.
Remove tags.
4.
Carefully tie wires so that they cannot contact heaters.
NOTE
FOLLOW ON MAINTENANCE:
1.
Install mist eliminator. See para 4-32.
2.
Connect power.
4-132
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