OC Regulator, Fill Station & Tanks
 
1. All fill operations require the use of safety glasses, gloves and a protective mask. Fill operations must be conducted in an isolated area in the unlikely event of a pressure disk rupture during filling. NOTE: Pressure disks slightly weaken with each refill. Pressure disks are rated at 750-1150 psi. Do not attempt to fill above 250 psi as you may blowout the head assembly gauge. Fill personnel should decontaminate with soap and water after fill operations.
2. Use only CO2 or Nitrogen to fill the ALSOC21/46. CO2 or Nitrogen tanks may be purchased/leased from local welding suppliers or found by consulting with local fire fighting personnel. Note: Ensure the tank has a 300 lbs gas regulator and that it is adjusted to 250 +/- 5lbs. (This type regulator is available through A.L.S. by ordering the ALSOCREG. See ALS catalog).
3. Ensure all pressure is released from the ALSOC21/46 prior to any fill operation.
FILL OPERATION PROCEDURES:
a. Remove the complete head assembly from the ALSOC21/46. Inspect the aluminum pickup tube for metal shavings or any debris which may damage or cause seals/pressure disks to malfunction.
b. Inspect seal for cracks or dry rotting and lubricate with vasoline or Hoppes # 9 pneumatic oil. DO NOT use alcohol based lubricant.
c. Pour contents of refill into the ALSOC21/46. Note: It is best to use a dedicated wide mouth funnel for filling operation and liquid contents should be no more than 60% of internal capacity of the tank. MK21: 80 cu in max capacity. MK46: 136 cu in max capacity.
d. Replace the complete head assembly ensuring the head securely screwed into the body of the tank. Torque to Approx 80 Ft Lbs closure torque.
e. Remove the aluminum spray nozzle on the head assembly by unscrewing counter clockwise. DO NOT REMOVE OR LOOSEN PRESSURE RELIEF BOLT LOCATED JUST BELOW SPRAY NOZZLE.
f. Screw in the male threads identified as "D" on the attached drawing into the female threads left vacant by the spray nozzle removed in step "3e".
ALSOC21/46 Tank thread: ½" x 20 UNF 2B
WARNING: Do not fill tank to reading of over 250 psi on the tank gauge located on the ALSOC21/46. Filling above this number on the gauge can result in a blow out of the tank gauge which will release the pressure and the high irritant contents into the surrounding area.
4. Ensure the pressure valve on the CO2 fill bottle is turned off and recheck CO2 fill bottle regulator for 0 reading.
5. Attach "A" (see drawing) to the CO2 fill bottle. Tighten with wrench to 25 foot lbs. (Left hand threads)
6. Ensure valves "B" and "C" (see drawing) are in the off position.
7. Open the valve on the CO2 fill bottle.
8. Simultaneously squeeze the actuator handle on the head assembly of the ALSOC21/46 and slowly open valve "C" (see drawing) watching the gauge on the ALSOC21/46. Allow pressure to build slowly until the needle on the gauge reads between 240 and 250 psi.
9. Quickly close valve "C" (see drawing).
10. Release the actuator handle on the ALSOC21/46.
11. Close the valve on the CO2 fill bottle.
12. Open "B" valve (see drawing) fully to release hose backpressure. The release of pressure should last no more than a second.
13. Open valve "C" (see drawing). NOTE: If the gas pressure continues for more than 2 seconds, close valve "C" and squeeze the actuator handle 2 times to seat the seal and repeat this step.
13. Unscrew "A" (see drawing) from the CO2 fill bottle and replace the aluminum nozzle on the ALSOCTK.
14. Note: You will see a drop in pressure on the ALSOC21/46. dial to approximately 100 psi. This is a normal reaction as the gases are absorbed by the liquid contents. The ALSOC tank will operate and project a 30 ft stream. A second charging of up to 200 psi may be applied by repeating steps 4-13.
DO NOT:
> Attempt refill operation without proper equipment.
Remove or loosen the pressure relief bolt located just below the nozzle of the ALSOC head assembly.
Modify regulator/head assembly without consulting A.L.S. Technologies.
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