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APPENDIX A
RECHARGE - DRY CHEMICAL EXTINGUISHER
To return the dry chemical extinguisher to service
after use:
1.
Invert the extinguisher and press the lever to
release all pressure.
2.
Remove the hose and/or nozzle from the valve
assembly and then remove the valve assembly
from the shell.
3.
Remove the pick-up tube and spring from the
valve assembly.
4.
If the valve stem is plastic, remove by pushing
down on the push lever and then withdrawing
the stem using a needle nose pliers. Be careful
not to scratch the seating area in the aluminum
valve. Discard the plastic valve stem assembly.
If the valve stem is metal, remove and clean it,
taking care not to damage the O-ring or molded
rubber. After either valve stem is removed,
clean the internal valve body with a soft cloth.
CAUTION: DO NOT SCRATCH INTERNAL VALVE
SURFACES.
SCRATCHING
CAN
RESULT IN VALVE LEAKAGE.
5.
Remove quad ring. Clean dry chemical from
the valve and quad ring groove. Lubricate the
quad ring with a high quality silicone grease and
return to valve assembly. Make certain quad
ring is not twisted.
6.
If there is a window in the back side of the
carrying handle (as shown), a small metal tab
should extend. This tab protects the plastic
valve stem. It the push lever tab is bent or
missing, replace the push lever.
A8-1
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