TM 9-4110-258-13
c.
Installation.
(1) If removed, install thermostat bracket (23) and two screws (24).
(2) Install switch (4). Be sure tabs on side of switch snap to secure it in place.
(3) Install cam (22) but do not tighten setscrew (21) at this time.
(4) Wrap tape around thermostat (3) capillary tube for a distance of 12 inches (30 cm) from thermostat to
protect the capillary tube from electrical components in the control box.
(5) Install thermostat (3) routing sensing bulb (9) through grommets (20). Install any grommets removed.
(6) Install two bolts (19) and new self locking nuts (18).
(7) Slip clamp (8) over sensing bulb (9).
(8) Install clamps (8) and (10), flat washer (7), new lock washer (6), and screw (5).
(9) Install tie down straps (15) as necessary.
(10) Apply silicone RTV into evaporator frame grommet (20) to seal evaporator enclosure.
(11) Using tags and wiring diagram (fig. 1-4), install wire leads (12) and screws (13). Remove tags.
(12) Using tags and wiring diagram (fig. 1-4), install wire leads (14). Remove tags.
(13) Install knob (17) and tighten setscrew (16).
(14) Adjust and hold thermostat (3) setting to 20 F (-7 C). Using multimeter set to measure continuity,
monitor switch (4) continuity between terminals C and NO. Position cam (22) over switch button and rotate
cam only clockwise to close the switch contacts, indicated by continuity between terminals. Slowly rotate
cam only counterclockwise until the switch contacts just open, indicated by no continuity between
terminals. Tighten setscrew (21) at this point.
(15) Carefully push circuit breaker cover (2) into place and install six screws (1).
NOTE
FOLLOW-ON MAINTENANCE:
Unlatch and close control box cover door.
Install left side panel (evaporator) (para 4.16).
Connect power and put unit back into service.
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