TM 9-4520-260-13
4-25. ROOM THERMOSTAT
This task covers:
a. Removal
c. Cleaning
e. Installation
b. Inspection
d. Testing
INITIAL SETUP
Tools
General Safety Instructions
Tool Kit, Service Refrigeration Unit
(Item 1, Appendix B, Section III)
Material/Parts
Soft-bristle brush
The ignition system of this heater contains
(Item 2, Appendix E)
dangerous voltages which can cause severe electri-
cal shock. Be sure to disconnect power before any
maintenance actions.
Tags
(Item 13, Appendix E)
Equipment Condition
Power disconnected and fuel supply turned off.
REMOVAL (Figure 4-22)
1. Loosen screw (1) and remove thermostat cover (2).
2. Tag (Item 13, Appendix E) and disconnect three-wire cable (3).
3. Remove screws (4) that secure thermostat (5) to wall and remove thermostat.
INSPECTION
Make sure knob turns freely.
CLEANING
Clean the thermostat with a soft-bristle brush (Item 2, Appendix E) to remove dust or lint.
4-50
