TM 5-4520-256-14
3-32.
RETURN TEMPERATURE THERMOSTAT MAINTENANCE.
This Task Covers:
a. Removal b. Inspection c. Cleaning d. Testing e. Installation
INITIAL SETUP:
Tools Required:
Tool Kit, General Mechanics
Multimeter
Materials Required:
Cleaning Solvent (Item 11, Appendix E)
WARNING
Cleaning solvent, Federal specification P-D-680, is toxic and flammable. Use only in a well-
ventilated area. Avoid prolonged breathing of fumes. Keep solvent away from flames. Do not
use in excessive amounts. Avoid skin contact.
Equipment Conditions:
Heater unit shut down and cool.
Power cable disconnected from power source.
Access door and air filters removed (para 3-10a).
a. Removal.
(1) Remove two screws (6), two flatwashers (4), two lockwashers (5), and two clamps (3) from wall (7).
(2) Remove thermostat (1) from clamp (3).
(3) Remove leads (2) from terminals 3 and 4 of temperature controller.
3-98 Change 3
