How to Replace AMPAC Filters and Reverse Osmosis Membranes

Replacing The Pre & Post Filters:
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  1. Shut off the system by turning off the water supply.
  2. Turn off the holding tank valve.
  3. Open the spigot to release the pressure from the system.
  4. Place towel under the unit for water spills.
  5. Use a filter wrench or by hand to open the filter housing, unscrew it from right to left.
  6. Throw away the used filter, and clean the inside of the housing by rinsing or scrubbing.
  7. Watch for the black "0" ring inside the filter housing (DON’T LOSE IT!).
  8. Place the new filter inside the filter housing.
  9. Place the "O" ring in the housing grove (MAKE SURE IT IS IN PLACE)
  10. Put some Vaseline or silicon-based lubricant on the side of the housing threads.
  11. Use a filter wrench or by hand to screw the housing back into place by turning it from left to right (Don’t lay down the unit while screw it in, the unit should be stand upright to prevent the O-ring from slipping).
  12. Repeat the above steps for other filters.
  13. After all housings are tight, turn on the water supply and storage tank valve.
  14. Observe for any leaks, if there is leak, tighten the housing or re-aligning the O-ring.
  15. If you are changing a carbon filter or membrane, you must drain the first tank of water after restart the system.
Replacing The Inline Polishing Filter:

Replacing inline-carbon filter, the flow direction indicated on the filter should be the same as the old filter. The Inline Replacement Filters From Ampac Use John Guest "Quick-Connect" Fittings.

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To Disconnect push in collet squarely against the face of fitting. With the collet held in this position, the tube can be removed.
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Push the tube into the fitting, to the tube stop, the collet (gripper) hold the tube in position. Pull the tube lightly to check it is secure in position.
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Replacing The Reverse Osmosis Membrane:
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  1. Follow "Change Filters Procedures" above steps 1 to 3
  2. Free the membrane from the clips.
  3. Use a 5/8" wrench to remove the tubing from the membrane vessel (the inlet side of the membrane vessel, or the side with the membrane vessel cap)
  4. Unscrew the membrane vessel cap off (counter-clockwise)
  5. Use pliers to pull the membrane out of the membrane vessel, and discard the used membrane
  6. Insert the new membrane into the membrane vessel (THE SIDE WITH DOUBLEBLACK O-RING SHOULD GO IN FIRST)
  7. Push the membrane all the way in
  8. Put some Vaseline or silicon based lubricant to the side of the vessel threads
  9. Screw the membrane vessel cap back (clockwise)
  10. Connect the tubing to its elbow fitting
  11. Turn on the water supply and tank valve to restart the system
  12. Observe for leaks, if there is leak, tighten the cap.
    Wait 2 to 3 hours for the tank to be filled then you must drain the first tank of water by opening up the faucet to flush the system
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  Tuesday 21 May, 2019     757934 requests since Sunday 24 June, 2012  

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