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Page Title:
Figure 3-11. Temperature control thermostat and two-speed switch tests |
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 TM 5-4120-356-14
TEMPERATURE RISE CONTINUITY CHECK
TWO-SPEED SWITCH CONTIN-
UITY CHECK.
PLACE TEMPERATURE SENSING BULB IN A CONTAINER
1.
OF WATER AT A TEMPERATURE OF 80 TO 90 F
1.
WITH KEYWAY IN DOWN-
(28 TO 32 C).
WARD POSITION, PRESS
TOGGLE DOWN. CHECK
2. WHILE FACING SWITCH SHAFT, ROTATE SHAFT COUNTER-
CONTINUITY BETWEEN
CLOCKWISE TO LIMIT.
TERMINALS 1 AND 2.
3.
CHECK CONTINUITY BETWEEN TERMINAL (RED) AND
2. WITH KEYWAY IN DOWN-
TERMINAL 3 (YELLOW). REPLACE TEMPERATURE CON-
WARD POSITION, PRESS
TROL THERMOSTAT IF AN OPEN CIRCUIT IS FOUND.
TOGGLE UP. CHECK CON-
TINUITY BETWEEN TERM-
TEMPERATURE DROP CONTINUITY CHECK
INALS 2 AND 3.
1.
PLACE TEMPERATURE SENSING BULB IN A CONTAINER
REPLACE TWO-SPEED
3.
OF WATER AT A TEMPERATURE OF 40 TO 50 F
SWITCH IF AN OPEN
(4 TO 10 C).
CIRCUIT IS FOUND.
2. WHILE FACING SWITCH SHAFT, ROTATE SHAFT CLOCK-
TWO-SPEED SWITCH TEST
WISE TO LIMIT.
3.
CHECK CONTINUITY BETWEEN TERMINAL 1 (RED) AND
TERMINAL 2 (BLUE). REPLACE TEMPERATURE CON-
TROL THERMOSTAT IF AN OPEN CIRCUIT IS FOUND.
TS5-4120-356-14/311
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