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TM 07661B-14/1
APPENDIX A
(4)
Close charge valve and dry chemical shutoff valve; open purge valve.
(5)
Open dry chemical system nitrogen cylinder valve.
(6)
Flex and knead the hose in the clogged area (easily determined by firmness of hose) until lumps are
broken. The dry chemical will be exhausted from hose.
(7)
Close nitrogen cylinder valve and purge valve; open charge valve.
(8)
Connect hose to discharge nozzle; rewind handline onto reel.
Section VI. FIELD MAINTENANCE
A 3-29. DEFINITION AND SCOPE.
a.
General. Field maintenance support for the fire extinguisher will be minimal because the fire extinguisher is
simple in design, rugged in construction, and is not in continuous operation. Field maintenance support will be required
only to repair the components for which adequate tools, facilities and test equipment are not available at organizational
maintenance level.
b.
Scope. Field maintenance support includes third and fourth echelons of maintenance and will generally be
limited to repair and overhaul of fire extinguisher components. This will include cleaning, testing, disassembly,
assembly, and adjustment of components.
A 3-30. CLEANING, INSPECTION, AND REPAIR.
a.
Cleaning Instructions. This paragraph contains instructions relating to suitable materials and cleaning methods
for cleaning component parts.
(1)
RUBBER PARTS. Clean all rubber parts using dry cleaning solvent, Federal Specification PD-680.
Agitate frequently and use a soft bristle brush to clean crevices. Dry parts with filtered, low pressure, compressed air.
CAUTION
Do not allow dry cleaning solvent, Federal Specification P-D-680 to come in contact with
electrical components.
WARNING
Use normal precautions when cleaning with compressed air to prevent injury to personnel.
Compressed air for cleaning purposes will not exceed 30 psi. User should wear safety
goggles, and should not direct the stream of air toward himself or other persons.
WARNING
When using Trichlorethylene, MIL-T-7003, make sure there is adequate ventilation, as the
fumes are toxic. Avoid prolonged exposure of bare skin to fumes.
(2)
ELECTRICAL COMPONENTS. Clean electrical components with a clean, soft bristle brush with
Trichlorethylene, MIL-T-7003.
Dry parts with filtered, low pressure, compressed air or a clean lint-free cloth.
A 3-37
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