Reassembly Of The Discharge Valve Assembly; Reverse Osmosis Membrane Element Replacement - Sea Recovery Aqua Mini 170 Owner's Manual

14. Always install new Cotter pins and turn ends to secure in position.

Reassembly of the Discharge Valve Assembly

1. Examine Adapter Spacer O-Rings and replace if worn. Lubricate and install O-Rings and Back-up-Rings on
both front and rear of the Adapter Spacer.
2. Examine the Valve Retainers for scale build up or war and install into each Discharge Manifold port with tab
down into the manifold chamber.
3. Replace worn or damaged springs and place into Retainers.
4. Examine Valve and Seats for pitting, grooves, or wear and replace as needed.
5. Place Valves over springs with concave side down.
6. Place Valve Seats on Valves with concave side down.
7. Lubricate O.D. of Adapter/Spacer and insert smaller I.D. into Discharge Manifold ports. Snap into position.
Exercise caution not to cut or pinch O-Rings.
8. Carefully guide Discharge Manifold with Spacers over Plunger Rod ends and press into Inlet Manifold.
9. Replace Socket Head Screws and torque to 115 in. lbs. / 9.4 ft. lbs. / 13 Nm
10. If oil was not changed, be sure oil it is at the proper level on the sight gauge.
11. Torque sequence for tightening the manifold:
3
X
X
6

Reverse Osmosis Membrane Element Replacement

Note:
• The Aqua Mini Membrane Element is accessible with the Vessel still attached to the frame.
• Replace all Brine and Product Water O-Rings attached to the End Plugs within the High Pressure Vessel
Assembly each time the Reverse Osmosis Membrane Element is removed or replaced. Ensure these
O-Rings are on hand prior to repair.
• Membranes are only installed and removed from the INLET end of the High Pressure Vessel.
Tools Required:
5/16" Allen wrench
regular pliers
Needle-Nose Pliers
1. Disconnect the High Pressure Hose from each end of the High Pressure Vessel Assembly.
2. Using a 5/16" Allen wrench remove the 3 each Socket Head Cap Screws from the three-piece Segment Rings
located at each end of the Pressure Vessel.
3. Push inward on the End Plug and Remove the three-piece segment ring from one end, repeat for the other
end.
4. Remove the Port Retainer from each end.
5. Remove the from each end.
6. Remove the product water tube from the respective end.
7. Insert all three of the Socket Head Cap Screws back into the End Plug. These screws are used as a grip to
remove the End Plug.
8. Grasp one or more of the Socket Head Cap Screws with a pair of pliers and pull slowly outward to remove the
End Plug. There is some resistance due to the two Brine O-Rings exerting friction against the Vessel wall. With
the End Plug removed from the High Pressure Vessel, the Reverse Osmosis Membrane Element is visible.
1
X
X
2
Maintenance and Repair
5
X
X
4
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