TM 5-4520-256-14
3-28. HEATER TEMPERATURE CONTROLLER MAINTENANCE.
This task covers:
a. Removal
b.
Inspection
c.
Cleaning
d.
Installation
INITIAL SETUP:
Tools Required:
Tool Kit, General Mechanics
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 removed (para. 3-10a).
a.
Removal.
(1)
Tag and disconnect wiring from terminal strip (2).
(2)
Remove two screws (3), two lockwashers (4), two flat washers (5), and temperature controller (1).
Change 3 3-80
