TM9-4120-401-14
EVAPORATOR FAN, MOTOR, AND HOUSING. - continued
4-43.
(9) Install two bell inlets (6) and secure with 12 screws (4) and flat washers (5).
NOTE
FOLLOW-ON MAINTENANCE:
Install condensate drain tubing (para 4-23).
Install transformer (para 4-39).
Connect power at power source.
HEATER THERMOSTAT (S3).
c. Replace
b. Test
a. Inspect
This task covers:
INITIAL SETUP
Equipment Condition
Tools
Refrigeration Unit Service Tool Kit
Appendix B, item 1
Materials/Parts
Use disconnect switch (NOT POWER
CABLE) to disconnect power to unit.
Heater Thermostat
Damage to cable connector pins will
result if cable is used.
Lock Washer
Disconnect power at power source.
Lock Washers (2)
Remove top panel (para 4-11).
a. Inspect.
(1) Check thermostat (1) for obvious damage and loose or missing terminals. Replace if damaged.
(2) Check bracket (2) for cracks or obvious damage. Replace if damaged.
b. Test.
(1) Tag and disconnect wire leads from thermostat (1) terminals.
(2) Using multimeter set to measure resistance, check continuity on thermostat (1) terminals 1 and 2.
Continuity should be indicated.
(3) Connect wire leads to thermostat (1) terminals using tags and wiring diagram (figure 4-6). Remove tags.
4-108
