RETURN TEMPERATURE THERMOSTAT MAINTENANCE.
This Task Covers:
a. Removal b. Inspection c. Cleaning d. Testing e. Installation
Tool Kit, General Mechanics
Cleaning Solvent (Item 11, Appendix E)
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.
Heater unit shut down and cool.
Power cable disconnected from power source.
Access door and air filters removed (para 3-10a).
(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