Question about Pedrollo PJ3015-CF N/A 1-1/2 HP High Pressure Pump with Press Flow Sy

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What to do if the pump continue running even when I close the discharge valves.is there a remedy for loose compression the pressure now less than before

I have a pedrollo water pump with sundeX automatic pump control attached

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Water pump runs constantly but no water pressure or water comes out of hose.


Lots of possibilities. Inlet filter might be clogged. I once had a lizard crawl into a water feed line, totally blocked the feed. Check valves might be stuck closed. Discharge hose might be plugged. Pump might be trashed ( if it is a vertical engine it is probably a throw away pump) Nozzle might be plugged.
Disconnect the hose at the discharge and turn on the water supply. It should have a stream of water even without the motor running. That will check the inlet filter, feed pipe and check valves.

Oct 07, 2014 | Garden

2 Answers

1989 MB 300e. Car wont start but has a good spark, what am I missing?


You are missing two items that are necessary . you need fuel out of the injectors and compression Run fault codes to find out why there is no injection occurring and have a compression test done to check that the valves are closing

Jan 07, 2014 | Cars & Trucks

1 Answer

Poor air compression


I would guess from the info supplied that the pressure switch is shutting it down at 125. Most piston type compressor only pump a max. of 175 unless it is a special high pressure unit. Also it may be shutting down on high amps, high temp etc.However with all that said Piston units are positive displacement, meanning that it should pump until something gives. Start your unit, close the discharge air valve and see what it pumps up to. May have to adjust pressure switch to get over 125. If unit runs and runs and just will not go over 125, you probably have a valve going bad. Do you have a safety lifting. if so another indication of a bad valve.

Nov 27, 2011 | Ingersoll Air Tools & Compressors

1 Answer

My Davey pump has been pumping in rapid succession even though all taps are not flowing. Each time I disconnect the pump from the pipes and then reconnect it back, the problem will be gone for a while...


Hello, W/D here.
Air can get trapped in the casing of the pump, but usually it winds up in the pressure tank. With too much air in the tank, it is considered air logged. Conversely, an insufficient amount of air in the tank creates a waterlogged scenario. Both conditions can cause the pump to be erratic.
If your tank is equipped with a bladder in it, the issue with insufficient air is avoided. If you have a bladder in the tank, there will be a schrader (bicycle type) valve at the top of it. Those that I have seen are set at 28 psi, with no pressure on the tank. This provides the cushion of air to pressure the water out of the tank and into the system. Otherwise, tanks are equipped with an air injection system that puts a bit of air into the tank every time the pump cycles. If the tank has no air, or very little air, there is insufficient compressible cushion for the tank to move the water.
Air trapped in the pump causes cavitation, where the efficiency of the pump is greatly reduced. The remedy for this is to crack a high point vent on the pump, with it running, and allow the air to escape. You should be careful not to remove a fitting so far that it comes out completely. The aim is to crack it just enough for air to escape. Tighten the fitting back up when air escaping is followed by water.
Frequent cycling can also be caused by damaged internals inside the well proper. Ususally, some water is forced down the well, through a venturi, and then comes back to the pump and tank. By passing through the venturi, a vacuum is created at the foot of the well, and water is sucked in through the foot valve. A damaged foot valve will allow water to return to the water table, causing you to lose water pressure. Let the pump reach it's shut-off pressure and then block (close) the discharge valve. Watch the pressure gauge. If the pressure gauge falls, the problem is on the well side, provided there are no piping leaks. If, after 10 minutes or so, the pressure is holding, open the discharge valve. If the pressure than falls, the issue is on the house side of the valve. Some things that people tend to forget in figuring water usage is leaking toilets and outdoor faucets, icemakers, and other water using appliances (or leaks).
Bleed the air off of your pump. Check your type of air volume control, and adjust if needed. Block the discharge valve, and determine which side the issue is on, and go from there. If you do not have the type of tank with the bladder in it, I highly recommend them. It takes so many problems out of the equation that they are well worth the money, in my very humble opinion.
Well, that's about all I can think of to help you. Best regards, --W/D--

Feb 24, 2011 | Home

1 Answer

My water pump kicks on every 30 min or so even if there is no water used


When a pump goes on and off there is a water leak somewhere.
There should be a gauge. Let the pump build up pressure and watch the gauge.
The pressure will probably be dropping. This means that water is going somewhere. The leak could be anywhere that you use water, sprinklers, sinks, hose lines. If there is a valve above or near the pump, shut that valve and see if the pressure stops dropping. If the pressure stays up and the pump stops cycling on and off, the leak in in the pressure piping somewhere, you must locate it and repair it.
If the pressure continues to drop even with the discharge valve shut, the water must be leaking back into the well. There is a check valve somewhere on your line between the well and the pump. If this check valve is leaking, pressure will drop and the pump will come on to restore it.

If it is possible to shut off the discharge of the pump, shut that valve and watch the pressure gauge to see if it is dropping.

Dec 12, 2010 | RTO Wayne 1/2 Hp Shallow Well Jet Pump

2 Answers

Compressor continues to run but doesn't refill so no pressure


hi there, several reason can be consider,check the belt tension slipway of belt can cause lost compression,but if belt is good,mainly lost compression causes of worn out compression ring,or the discharge valve is not functioning the air is flowing back.try to disconnect the belt,rotate the pulley manually you can feel at the suction side if air is sucking on suction side.if air is not entering in the suction side.replace piston ring.have a nice day dont frget to fix my rate thanks a lot.

May 12, 2010 | Air Tools & Compressors

1 Answer

Unloader valve keeps opening and closing during pump operation. does not give a continuous discharge, as when the ball valve is stuck open. seems that when the pump reaches max output pressure that the...


Sounds like the cutoff valve is failing to cut power off to the compressor drive motor, while it activates the unloader.--- I'd consider looking closely at the contacts, or replacing the cutoff.

Nov 13, 2009 | Ingersoll Rand Type 30 Fully Packaged Ir...

1 Answer

No pressure


Well, you can dismantle the pump head and check if the
impeller is damage. If damage, replace the impeller. Then reassemble the pump and reinstall to its position. Set the discharge gate valve at full close position. Then, fill the priming pipe full with water. Then, switch the power on, and slowly open the discharge gate valve to the desired pressure. Send in your e-mail for further assistance.

Oct 24, 2009 | Plumbing

1 Answer

How do i prime an onga pump from repressuring to primiing


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.

Sep 27, 2009 | Plumbing

1 Answer

My pump is running however it's pressure is less than 10 psi and the heater on the pool will not run.


With the Jacuzzi Magnum pool pumps, low pressure is going to likely be cause by one of the issues below. Try these troubleshooting tips.

1.Pump not primed

2.Leakage of air into suction system

3.Impeller clogged

4.Valve in suction or discharge line partly closed or suction or discharge line partly plugged or too small. 5.Plugged basket in skimmer or hair in lint strainer.

6.Dirty filter.

Jun 06, 2009 | Jacuzzi MAGNUM POOL PUMP 1-1/2 HP MAGNUM...

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