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How do i prime an onga pump from repressuring to primiing

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  • Anonymous Mar 31, 2014

    Pump runs all time


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Open the priming port at the discharge pipe. Close the discharge valve and fill the priming port with water until it is full. Power up and switch on the pump. While running, slowly open the discharge valve until the water
pressure gage at the pump is 20 psi. That will be the running pressure of the pump, and the maximum opening of the discharge valve.

Posted on Sep 27, 2009

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The simple answer is "Fill it with water", however, if you can provide more information such as model number, and installation details, i.e. flooded suction or suction lift, how high etc etc. Given this detail we can be of assistance to you.

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I have an Onga smh45 which keeps tripping out and you have to push the reset button. I have had it in to two repairers and they say they can't find anything wrong with it. Any assistance would be...

This could be your problem. Make sure it isn't running dry.
D.R.O.P (Dry Running Over-Temperature Protection)
The Onga SMH series of pumps (excluding the SMH35) are fitted with the internationally patented D.R.O.P system which protects the hydraulic parts from possible damage that can be caused by overheating of the liquid inside
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1 Answer

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Your Onga Pool pump was running dry causing the
impeller to melt down and stick to the pump case.
You have to remove the impeller, and the only way
to take it off by using the heat gun to melt the stucked plastic impeller. Or by forcing it off slowly, cutting the impeller using hacksaw, taking care of the mechanical seal and the motor shaft not to bend it. Afterwhich you can replace the impeller, and assemble the Onga pump/motor. Then, you can
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We begin at the suction line. I'll assume that you will be using this as a
pool pump since you have a filter. At the suction line, install a horizontal
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is the discharge pipelines going back to the pool.

Note: Pump must be installed within 3 to 5 meters near the water source. You may install more than 5 meters but suction could be difficult for the pump.

Priming the pump:

Open the plug at the tee that serves as the priming port, Fill this up with
water to full level with the service **** at full close position. Once filled
up, replace and close the priming port. Put the power on, and start the
pump running, then slowly open the service **** or flow control valve
to appropriate level.

Just send your e-mail for further assistance. Thanks.

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1 Answer

Diagram to repair onga house water pump

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