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TM 9-2330-272-14
5-12. FIXED FIRE EXTINGUISHER MAINTENANCE (Con’t).
WARNING
Compressed air used for drying purposes should never exceed 30 psi (207 kPa). Wear
protective clothing (goggles/shield, gloves, etc.) and use caution to avoid injury.
2.
Flush lines, fittings, and nozzles with dry cleaning solvent. Dry with compressed air.
3.
Inspect parts for cracks and bends. Test cable for freedom of movement in tube.
4.
Inspect control valve to ensure that arrow on self-resetting shaft is pointing upward and that pullout pin (3) is In
place,
5.
Check for damage and corrosion. Replace damaged or corroded parts.
6.
Inspect weight of cylinder. Recharge or replace cylinder as necessary.
f.
NOZZLES INSTALLATION
Install two nozzles (22) and nozzle (14) on three brackets (13) with six new Iockwashers (12) and screws (11).
g. LINES AND FlTTINGS INSTALLATION
1.
Apply antiseizing tape to threads of elbow (15) and straight adapter (16). Install elbow, straight adapter, and
discharge line (17) on nozzle (14).
NOTE
Step 2 applies to M131A4C and M131A5C only.
2.
Apply antiseizing tape to threads of straight adapter (18) and install two discharge lines (17 and 19) on straight
adapter.
3.
Apply anti seizing tape to threads of two tees (21) and install on two nozzles (22). Install three discharge lines (1,
19, and 20) on tees.
h.
CYLINDER INSTALLATION
1.
Position cylinder (7) in cabinet and install mounting bracket (8) with two new Iockwasher (9) and nuts (10).
2.
Apply antiseizing tape to adapter (2) and Install discharge line (1) on adapter.
l.
CONTROL VALVE AND PULL BOX INSTALLATION
NOTE
M131A5 is not equipped with cover.
1.
Install pull box (25) and cover (26) on frame with retaining pin (24).
2.
Apply antiseizing tape to straight adapter (29) and install washer (27), nut (28), straight adapter, and tube (6) on
pull box (25).
3.
Thread pull cable (5) through tube (6) and install pull handle (23) in pull box (25).
4.
Install pull cable (5) and tube (6) on control valve (4).
5.
Install control valve (4) on cylinder (7).
5-32
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