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TM 07661B-14/1
APPENDIX A
positions and retainer wires are in place. (Refer to figure 1-2 for control locations):
(1)
AFFF system.
(a)
Purge Valve (10) closed and AFFF nozzle closed.
(b)
Charge Valve (6) open.
(c)
AFFF Shutoff Valve (8) closed.
(2)
Dry chemical system.
(a)
Purge valve (9) closed and dry chemical nozzle closed.
(b)
Charge valve (5) open.
(c)
Dry chemical shutoff valve (7) closed.
A 1-11. INITIAL CHECKOUT AND ADJUSTMENT.
a.
Visual Inspection. Perform a complete visual inspection of the fire extinguisher for:
(1)
Completeness and condition of loose equipment listed in paragraph 1-7b.
(2)
Loss of parts or damage to the fire extinguisher during loading, shipment, unloading or unpacking.
(3)
Visible damage to pressure relief valves.
(4)
Cracked or broken nitrogen cylinder valve gage cover glasses.
(5)
Electrical connections for loose, broken or shorted wires.
(6)
Leaks, cracks, dents, chaffing, or evidence of binding in piping, hoses and lines.
(7)
Security of tank cap installation.
(8)
Minimum charge (1700 psi) in nitrogen cylinders.
b.
Operational Checks.
(1)
Start the operational checks by checking all fire extinguisher valves, with exception of the nitrogen cylinder
valves, for freedom of operation. Return all valves to original positions as specified in paragraph 1-104,and replace
retainer wires.
(2)
Open nitrogen valves and check for audible or visual leaks in systems.
(3)
Check for free unwinding of hose from reels (both basic unit and remote hose reel) with brake (7, figure 1-
3) released. Check that brake holds when set. Check that cranks operate freely to rewind handlines onto reel.
(4)
Reset the extinguisher as follows:
(a)
Close the nitrogen cylinder valves (18, figure 1-2).
(b)
Close the charge valves (5 and 6).
(c)
Open the purge valves (9 and 10).
(d)
Open the AFFF discharge nozzle to clear handline and depressurize AFFF tank.
(e)
Open the dry chemical nozzle to clear handline and depressurize the dry chemical tank.
(f)
After both tanks are depleted of pressure close both nozzles and purge valves (9 and 10).
A 1-21
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