TM 5-4520-256-14
3-26. TRANSFORMER MAINTENANCE-Continued.
b.
Inspection.
(1)
Inspect wires for cracked or burned insulation and exposed conductors.
(2)
Inspect transformer casing for cracks, holes, 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 transformer with cleaning solvent (item 11, Appendix E).
(2)
Allow to dry.
d.
Testing.
(1)
Connect a multimeter across the primary terminals.
(2)
The meter should indicate < 0 ohms and > 10 ohms.
(3)
Connect the multimeter across the secondary terminals.
(4)
The meter should indicate < 10,000 ohms and > 24,000 ohms.
e.
Installation.
(1)
Place transformer (6) and neoprene backing (2) into position on cabinet (3) and secure with four flat
washers (7), four lockwashers (8), four screws (4), and four nuts (9).
(2)
Connect secondary leads per tagged identification.
(3)
Connect primary leads to terminal 4 of TB1 (6) and to terminal 4 of switch S1.
(4)
Install access door per para. 3-10d.
Change 3 3-74
