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TM 07661B-14/1
APPENDIX A
WARNING
Four pressure relief holes are drilled in the threaded portion of the filler cap approximately
three threads before the cap is released. If pressure is heard escaping through these holes
while the cap is being removed, stop removal until all pressure has escaped; otherwise
serious injury to personnel could result. Page 3-12 and 3-14)
WARNING
Be sure system is depressurized before installing gage. (Page 3-17)
WARNING
The nitrogen pressure used in fire extinguisher operation can be extremely dangerous to
personnel if proper precautions are not taken. Before attempting replacement of any part of a
system, close the nitrogen cylinder valve and vent all pressure in system by opening nozzle
on hose reel. (Page 3-18 and 3-21)
WARNING
Do not attempt to remove pressure gage unless nitrogen cylinder is under zero pressure.
Nitrogen gas under high pressure can cause serious personal injury. (Page 3-24)
A vi
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