Model H1301 Recovery and Recycling System
Installation, Operation and Maintenance Manual
Revision-L September, 2019
Page 51 of 105
VII. System Maintenance Procedures
H. Moisture, Acid, and Processed Particulate Filter Element Replacement (continued)
4. Open the nitrogen source (MV-6) to the machine.
5. Loosen the hose connection at the Manual Inlet Valve to purge air from the hose
connection then retighten the hose to seal.
6. Open the Manual Inlet Valve MV-1.
7. Place the Inlet Valve Switch to the On position allowing nitrogen to flow into the
machine. This will purge any remaining agent trapped in the inlet and filter sections of
the machine into the process tank.
8. Observe the Pressure Controller. Allow the pressure to increase from the incoming
nitrogen from 50 to 100 psi display. Then continue with step-9.
9. Close the nitrogen source valve (MV-6).
10. Crack open the Inlet Evacuation Valve (MV-8) to depressurize the hose connections.
11. When the front panel Pressure Gauge indicates zero pressure: Close the Inlet
Evacuation Valve MV-8.
12. Close the Manual Inlet Valve MV-1.
13. Remove the hose connection from the Nitrogen Supply Evacuation Valve MV-6 to the
Manual Inlet Valve MV-1.
14. Observe the temperature display of the Process Temperature Controller and the
pressure display of the Pressure Controller.
15. If the temperature is below the alarm #2 set point of the Process Temperature
Controller (-60°F for Halon 1301and FE25, -20°F for Halon 1211 and -10°F for FM200):
continue with step-16 otherwise, wait for the refrigeration section to cool to the set point,
before continuing.
16. Place the N2 Valve Switch to the ON position venting from the process tank until the
pressure display is at least below 25 PSI.
17. When the pressure is below 25 psi: place the N2 Valve Switch to the AUTO position
discontinuing venting.
18. Place the Inlet Valve Switch to the AUTO position.
19. Place the machine System Power Switch to the Off position.
20. Disconnect main electrical power from the machine.
21. Open the filter maintenance access door on the top-right corner of the control panel
black hood.
22. Locate the two filter maintenance manual ball valves MV-2 and MV-3 and close both
valves. The valves will be closed when the handle of the valve is at a 90 angle with the
body of the valve. Refer to figure-11 for component locations.
23. Remove the cap from the filter maintenance access valve AV-4. Set the cap aside for
reinstallation.
24. Depress the valve core of the AV-4 access valve to release the residual nitrogen
pressure from the filter shells this will ease the removal of the filter caps.
25. Remove the aluminum housing of the processed particulate filter by rotating it
counterclockwise and pulling it straight away from the filter head.
26. Clean the interior of the filter housing and head using a soft brush or cloth.
27. Remove the filter element by pulling it straight away from the filter head.
28. Install a new filter element; part number A4-05-2500-00-1, as depicted by figure-10.
29. Verify the integrity of the filter head O-ring and backup ring seals. Replace the seals
as required using O-ring, A4-04-7060-00-0, and backup ring, A4-04-7060-00-1.
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