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High Pressure Tubing

When planning your installation and high pressure tubing runs, be aware 

that the maximum bend radius for the tubing is 12”. 

►►►

 

When running high pressure tubing in bilges or near heat sources, 

it is recommended that you install 3/4” reinforced hose over the 

high pressure tubing.

►►►

 

While running tubing, you may use a heat gun to assist in bending 

it. However, be very careful not to overheat an area and crimp the 

tubing.

  Once you’ve identi

fi

 ed where the tubing will be run, start by 

running the high pressure tubing from the output port on the 

High Pressure Pump to the inlet port on the membrane 

(see 

Figure 2)

. Be sure when cutting the tubing to length to leave 

some extra.

 

Install end 

fi

 ttings per the “Swagelok High Pressure 

Fitting Installation” instructions.

 

►►►

 

When cutting the tubing make sure the ends are 

square and clean.  A plastic tubing cutter with scoring 

action, which can be found in most hardware stores, is 

recommended. This tool can be used to cut PVC tubing as 

well. Do not use a hacksaw.

Sea Clear Watermakers™ Manual - Version 1.1-G 

Page 30

Your watermaker comes with 25’ of high pressure tubing and 4 Swagelok 

fi

 eld-attachable 

fi

 ttings. If your installation will require more than 25’ of tubing, please contact us.

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Summary of Contents for G-20

Page 1: ...ol Panel Installation Page 25 Pre filter Installation Page 26 High Pressure Pump Installation Page 27 Membrane Installation Page 29 Seawater Lift Pump Installation Page 29 RunningTubing and Hoses Page 30 Initial System Start up Page 33 Sea ClearWatermakers Manual Version 1 1 G Page 22 ...

Page 2: ...SYSTEM DIAGRAM Sea ClearWatermakers Manual Version 1 1 G Page 23 ...

Page 3: ... 1 Pre filter 25 of high pressure tubing 10 of 1 4 low pressure hose 50 of 1 2 low pressure hose 10 of 3 4 low pressure hose Sodium metabisulfite pickling chemical Optional Features Other membrane options Water tester Pump repair kit O ring kit for membrane housing ItemsYou Will Need Minimum 4000 watt generator 5000 watt preferred or larger Intake through hull Brine discharge through hull Stainles...

Page 4: ...the watermaker It should be as close as possible to the Membrane and to the High Pressure Pump Make sure the panel is mounted securely to a solid surface Mount theWiring Harness near the Control Panel but not below the panel as it will be obscured by hoses Run 12 gauge wire from a dedicated 10 amp breaker to the red wire on the barrier strip Sea ClearWatermakers Manual Version 1 1 G Page 25 On man...

Page 5: ...back of the Control Panel and left it loose Connect this hose to the 1 4 hose barb on the output side of the Pre filter Housing Run a 1 2 hose from the output side of the Pre filter Housing to the input hose barb on the High Pressure Pump Place the 5 micron Pre filter that was included with your kit into the Pre filter Housing Screw the Pre filter Housing back into place The first time the Seawate...

Page 6: ...or future reference Sea ClearWatermakers Manual Version 1 1 G Page 27 Bracket Requirements Before installing the high pressure pump you ll need a bracket to mount it to the generator The pump must be mounted as level as possible with the oil dipstick on top of the unit The pump can be turned in either direction The bracket should be made of mild steel and painted prior to installation The bracket ...

Page 7: ...t the wire from the magnetic clutch to the wiring harness on the Control Panel using 12 gauge tinned wire If the generator is not grounded to the terminal of the battery you will need to run an additional wire from the pump to your battery buss In most cases this will not be required High Pressure Pump Fittings See Swagelok High Pressure Fitting Installation on page 29 Sea ClearWatermakers Manual ...

Page 8: ...ith your watermaker or it may be threaded directly onto the through hull fitting If you are mounting it on a bulkhead the pump must be installed a minimum of 2 below the waterline as close to the through hull as possible Once the pump has been mounted run the brown wire to the wiring harness on the panel and run the black wire to the buss Run a 3 4 hose from the output of the Seawater Lift Pump to...

Page 9: ...high pressure tubing from the output port on the High Pressure Pump to the inlet port on the membrane see Figure 2 Be sure when cutting the tubing to length to leave some extra Install end fittings per the Swagelok High Pressure Fitting Installation instructions When cutting the tubing make sure the ends are square and clean A plastic tubing cutter with scoring action which can be found in most ha...

Page 10: ...ten fittings Swagelok High Pressure Fitting Installation Fully insert the tube into the fitting and against the shoulder rotate the nut finger tight Fig 1 High Pressure Applications and High Safety Factor Systems Further tighten the nut until the tube will not turn by hand or move axially in the fitting Mark the nut at the 6 o clock position Fig 2 While holding the fitting body steady tighten the ...

Page 11: ...boat is used under normal running conditions This through hull must not be located near discharge lines that could introduce foreign materials such as head or generator exhaust Because it is important that the product water line never become blocked we discourage the use of shut off valves in the product water tubing We recommend that the product water from your watermaker be connected to its own f...

Page 12: ...eled H P Clutch Take a moment to check for leaks again and verify additional flow through the system Let the system run for 5 minutes and then increase the pressure by turning the Pressure Adjustment NeedleValve clockwise until it reaches 700 psi Do another quick check for leaks Pre Start up Checklist All hose fittings are secured with hose clamps Through hulls are open All wiring connections are ...

Page 13: ... the Membrane Pressure Gauge Reduce pressure by turning the Pressure Adjustment NeedleValve counterclockwise to operating pressure of 850 psi Verify output flow to 5 gallon bucket Let system operate discarding water for 15 minutes before testing checking one last time for leaks At the end of 15 minutes fill 5 gallon bucket with product water WARNING Be sure that the High Pressure Pump needle valve...

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