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APPENDIX A
APPENDIX
GAUGE REPLACEMENT PROCEDURES
1.
Invert the extinguisher and press the lever to
release all pressure. (On Halon 1211 models,
inverting is not necessary; also if agent
reclaiming is desired, see page 12 of Appendix.)
Remove valve assembly.
2.
Disassemble the valve assembly, removing the
pick-up tube, valve stem, and spring.
3.
Remove damaged/defective gauge.
4.
Clean the gauge port thread. Use 1/8 in. NPT
pipe tap to chase threads, if necessary. Be
careful not to tap too deep as gauge will not
tighten properly and valve assembly will have to
be replaced.
5.
Apply plastic lead pipe sealant (ARMSTRONG
C-4 w/Activator W or equivalent) to the thread
of the new gauge. Be careful not to get any
sealant into the hole in the face of the gauge
socket. Ansul does not recommend the use of
pipe tape.
6.
Screw the new gauge into the valve body
making certain that the GREEN operating range
on the gauge face ia pointed to the top of the
valve.
A8-7
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