TM9-4120-400-14
4-42.
HEATER THERMOSTAT S6. - continued
TESTING
1. Check continuity on terminals 1 and 2 of the thermostat. Continuity should be indicated.
2. Check continuity on terminals 3 and 4. Continuity should be indicated.
REPLACEMENT
Replace heater thermostat if defective.
INSTALLATION
1. See tags and wiring diagram figure 4-4 and connect leads. Remove tags.
2. Attach thermostat (2) to bracket (3) with two screws (4) and lock washers (5).
3. Attach thermostat (2) and bracket (3) assembly to flange of the top center panel with two screws (1).
NOTE
FOLLOW-ON MAINTENANCE:
HEATER ELEMENTS (HR1-HR6 3 phase units) and (HR1-HR4 single phase units).
This task covers:
c. Removal
a. Inspection b. Testing
d. Cleaning
e. Replacement
f. Installation
.
INITIAL SETUP
Equipment Condition
Tools
Refrigeration Unit Service Tool Kit
Materials/Parts
Heater Element
Lock Washers (6)
Rags
4-104