TM 5-4520-256-14
3-27. HIGH TEMPERATURE SAFETY THERMOSTAT MAINTENANCE-Continued.
b.
Inspection.
(1)
Inspect wiring for cracked, burned, or deteriorated insulation and exposed conductor.
(2)
Inspect thermostat for cracks, broken, or burnt terminals, and corrosion.
(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 thermostat in cleaning solvent (item 11, Appendix E).
(2)
Allow to dry.
d.
Testing.
(1)
Connect multimeter across thermostat terminals. Meter should indicate > 2 ohms.
e.
Installation.
(1)
Place thermostat (1) into position. Secure with two flat washers (4), two lockwashers (3), and two screws
(2).
(2)
Connect wiring per tagged identification.
(3)
Install all filters and access door per para. 3-10d.
Change 3 3-78
