I have an onga SMH45 pump approx 6 yrs old delivering domestic water to house. It has started to prime for 5 secs every 10 minutes. What is the problem please? Lesley

if the pump is delivering to the hose tap then it is working
there has to be a problem in the plumbing and control arrangement to the house taps for there to be no pressure at the house
possible tap turned off to the house circuit
Is the pump big enough to supply constant pressure /flow to more than one tap
what sort of pressure control unit is there on the pump
what distances and head heights are involved from the water level in the tank to the house taps
Is there water flow from the house taps but not at pressure
the pump should be able to maintain at least 35psi with at least 4 taps running

It sounds like a pressure switch problem. Check that your tank pressure is at two psi below your cut-in pressure. If it is correct, then I suggest replacing the press switch.

Check if there is a plug that can be removed to pour in water, if not the outlet pipe may have to be removed to prime with water, hope the non return valve in the tank has not picked up any rubbish . if it can't be primed that could be the case.

Does the pump hold prime when it's off? If a pump runs dry at first then primes it makes the pump and motor work harder. How many gallons of water is your pool?

either water lock or motor burnt out ,

Is the pump building pressure and shutting off? If the pump keeps running but not building pressure than there is most likely a problem with the well (low volume). Also check for a water logged bladder tank.
RJ

a number of possibilities like insufficient pressure in the bell or pressure leak 'or pump motor dying
but i'd be looking at a warranty claim

Check the electrical connection for grounded wires or
loose electrical connections. Use wire nut for all electrical connnection and tape it properly. This should
correct the 20 ohms earth leakage. Send you e-mail comments for further assistance.;

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
or a vertical check valve along the suction pipe. Then the suction pipe
is connected to the bottom pipe adapter of the filter. The top pipe adapter of the filter shall be connected to the pump suction adapter. At the pump discharge adapter, install a GI Pipe Tee. At the bottom of the GI pipe tee, put a GI nipple going to the pump discharge adapter. Opposite it shall be the pipe plug to serve as the priming port. At the GI pipe cross, install a GI nipple about 6-inch long with a service **** to balance water flow. At the end of the service **** install another 6-inch GI nipple to attach a gate valve to control water flow. After the gate valve
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.