PN 05606
04/2020
6. If the Model 600 is so equipped, check the agent lever indicator. The indicator arrow shall be in the Green
zone. Refer to the Trouble Shooting guide if there are any problems with the indicator.
7.
Check pull pin for freedom of movement. Replace if bent or if removal appears difficult.
WARNING: ALWAYS OPEN THE SHUTOFF NOZZLE HANDLE SLOWLY. ANY EVIDENCE OF AGENT
IN THE NOZZLE INDICATES THAT THE UNIT MAY HAVE BEEN USED AND THE USE
NOT REPORTED. BE PREPARED FOR A POSSIBLE DISCHARGE AND NOZZLE
RECOIL.
8.
Check the nozzle shutoff lever for freedom of movement (open and close several times). If the operation
is impeded, disassemble the nozzle, replace parts, and/or properly lubricate as necessary. Make sure that
the nozzle tip is clear and unobstructed.
9.
After making sure that there is no residual pressure in the discharge hose, disconnect it from the
operating valve. Blow air through the hose and nozzle assemblies to insure that the passage is clear of
foreign material. Check the couplings, hose and hose gasket for damage or deterioration –
replace as
necessary.
10.
Inspect the valve assembly for corrosion or damage to hose thread connection. Visually inspect the safety
disc assembly on the Model 600 discharge valve. Replace valve assembly or component parts as
necessary following the proper depressurization and recharge procedures. If valve removal is necessary,
complete all steps in the Recharge Procedure.
11.
Reconnect the hose to the agent cylinder. Properly coil the hose on the rack and install the nozzle (with
the lever in a closed position) on the mount.
NOTE: When assembling the hose to the agent cylinder or nozzle to the hose, tighten the
coupling ¼ turn after contacting the hose gasket.
12.
Inspect the wheels on to insure they rotate freely. Lubricate as required.
13.
Check carriage assembly for loose nuts, bolts, frame distortion or damage. Check welds for damage or
corrosion. Replace damaged parts or make repairs as necessary.
14.
Install new tamper seal, and record service data on the extinguisher inspection tag.
15.
If the extinguisher has been moved to perform service, make sure that it is returned to its proper location.
COMPLETE MAINTENANCE (SIX
-
YEAR MAINTENANCE)
NFPA10 Every 6 years, stored pressure extinguishers shall be emptied and subjected to the
applicable maintenance procedures. When the applicable maintenance procedures are performed
during periodic recharging the six
-
year requirement shall begin from that date.
WARNING:
a. Before attempting to de
-
valve the extinguisher for Maintenance, Hydrotest or
Recharging be sure that it is completely depressurized. Halon 1211 generates a
vapor pressure of 22 psi at 70°F. NEVER VENT TO THE ATMOSPHERE. Recover
agent and vapor according to the instructions below.
b. Never have any part of your body over the extinguisher while removing the valve
assembly.
c. Halon 1211 shall not be mixed with even the slightest amount of moisture. Prolonged
exposure of a de
-
valved cylinder to ambient air shall be avoided to prevent moisture
contamination and cylinder rusting.
COMPLETE MAINTENANCE (SIX
-
YEAR MAINTENANCE) PROCEDURES
1.
Complete steps 1
-
9 in Maintenance Procedure above.
