TM 55-2210-224-34
3-22. FIELD SHUNT CONTACTOR (cont)
CLEANING, INSPECTION, AND REPAIR
WARNING
•
Drycleaning solvent P-D-680 is toxic and flammable. Wear
protective goggles and gloves and use only in a well-ventilated
area. Avoid contact with skin, eyes, and clothes and don't breathe
vapors. Do not use near open flame or excessive heat. The flash
point is 100 138°F (38-59°C). If you become dizzy, get fresh air
and medical aid immediately. If contact with eyes is made, wash
your eyes and get medical aid immediately.
•
Compressed air used for cleaning purposes will not exceed 30 psi
(207 kPa). Do not direct compressed air against skin. Use goggles
or full face shield.
NOTE
Do not file or attempt to clean stationary contact tip (13) and
movable contact tip (23). Silver alloy surfaces on contacts may
become blackened, pitted, or eroded. These conditions will not
hamper the operation of the contactor.
13. Use drycleaning solvent and clean metal parts. Dry with compressed air.
14. Inspect and repair components as follows:
a.
Arc chute (9). Inspect arc chute and replace plates that are broken or burned three/fourths through. Replace if
burned close to the screws.
CAUTION
Do not use sandpaper or emery cloth to dress tips.
b.
Inspect stationary contact tip (13) and movable contact tip (23). Replace if worn down 3/32 inch (2.38 mm).
Replace silver tips if silver is worn through.
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