TM 5-4520-256-14
3-28. HEATER TEMPERATURE CONTROLLER MAINTENANCE-Continued.
b.
Inspection.
(1)
Inspect wiring for cracked or burned insulation and exposed conductors.
(2)
Inspect temperature controller housing for cracks, holes, broken terminals, and broken or missing control
knobs.
(3)
Inspect for loose, damaged, or missing hardware.
c.
Cleaning.
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.
(1)
Clean the temperature controller in cleaning solvent (item 11, Appendix E).
(2)
Allow to dry.
d.
Installation.
(1)
Place temperature controller (1) into position and secure with two flat washers (5), two lockwashers (4), and
two screws (3).
(2)
Connect wiring to the terminal strip (2) per tagged identification.
(3)
Reinstall air filters and access door per para. 3-10d.
Change 3 3-82
