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My pump keeps pulsating and has no pressure - Hayward SAND FILTER, PRO SERIES

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Make sure there are not abstructions in the line. sounds like a prime problem.

The Pool Tech

Posted on Aug 07, 2010

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Landa pressure washer LT 4035-4000 psi. Why is it losing pressure and continually pulsating?


If the pump is pulsating rapidly most likely valves are leaking or debris under valve keeping one or more from closing. If the pump pulsates slowly, comes up to pressure then low pressure then repeats, problem is pressure regulator /bypass. Or you could have a combination of both. Try lowering the pressure to lowest setting to see if slow pulsation stops. As parts age within pump and debris hinder operation you can no longer operate at full pressure. To make the pump last, use highest pressure as needed and everyday work using only 60 to 75 percent of capacity.

Mar 19, 2013 | Garden

1 Answer

My karcher 250 pulsates when i turn it on, any idia how to fix it thanks


My karcher 250 pulsates when i turn it on, any idia how to fix it thanks

Several things can cause this problem. It is trying to build up pressure and something is preventing it.

1. check water pressure comming out of the the spicket.
2. Make sure the hose and connectors aren't leaking.
3. make sure there isn't any water leaking from the washer.

If all is ok I would guess the pressure pump has gone out that's the noise you hear pulsating trying to build up pressure.

Terry

Jan 15, 2011 | Garden

1 Answer

Pressure pump keeps pulsating when trigger not pressed


There is orobably a minor water leak on the output side of the pump. The pump is sensing a pressure drop due to the leak so it will run for short periods to maintain the pressure i the output line.

Aug 20, 2010 | Karcher PSI Electric Pressure Washer

1 Answer

Annovi reverberi triplex preesure washer pump


Usually when a pressure washer is pulsating, either one or more pistions are not pumping. Quite often one of the check vavles for a cylider has broken and will not seal, which means you'v just lost one cylinder, and now you're running on two (etc) If a pressure washer is allowed to idle too long, re-circulating the water, it will get hot, and then melt the plastic container on the check valves. Go to : www. pressure-washer-parts.com You can order parts, and manuals.

Jul 15, 2010 | Annovi Reverberi 4000psi 4gpm Pressure...

1 Answer

My Hayward pump is pulsating rather than keeping a


make sure all intake unions are tight you have a air leak or top pump seal is bad

Jun 09, 2010 | Jandy PHP High Head Pump 2 HP Up rated

1 Answer

Pressure washer pulsates


Could well be the main jet slightly blocked in the carburettor.

Jun 04, 2010 | Garden

2 Answers

Pulsating when idle


The motor doesn't pulsate when you are spraying and pulsattes when not spraying is normal otherwise the pressure will just keep building and burn out the pump. However, if you are not using the sprayer right away then the unit should be shut off until your ready to start again.
I hope the answer is helpful, please rate if the answer has helped in any way. Good Luck and have a great weekend.

Apr 03, 2010 | Karcher K 3.98 M Electric Pressure Washer

1 Answer

Pressure washer is pulsating when powered on


it just the presure building back up ,it will last years doing this,i would not worrie as replacing the presure pump will only be a temp fix and it will do it again ,most washes do this after a year or lots of use.

Dec 31, 2009 | Karcher 1750 psi Electric Pressure Washer

1 Answer

Karcher 360M pressure washer pulsating problem when idleing


Hello,


unfortunately these little units have this problem commonly, 9 times out of 10 it will be the plastic head or the plastic valve block on the unit will be cracked and leaking slightly... it builds up pressure then leaks out and tries to build up the pressure again and this just reoccurs over and over...

you can get this repaired but is normally about half the cost of a new unit, if the pressure is still okay i would probably recommend just keep using it until it proper dies...

If you do get this fixed, we have studied into this and believe the main cause of heads cracking is warm water say if your inlet hose is in the sun for a period of time this can cause the water to become quite hot or if the unit sits and water trapped inside the head assy freezes can also cause this. Hope this helps Kind Regards Brad

Dec 16, 2009 | Karcher PSI Electric Pressure Washer

1 Answer

Pump is pulsating , not pumping full pressure , water supply and screens checked out ok pump model sjv3g627-1 on a briggs 6.5 hp


Pulsating is usually due to a leak. It could be the pump leaking or the hose, gun or wand leaking. Is there water coming out of these anywhere it is not meant to?

It could also be a valve is not closing properly or a seal needs replacing.

Aug 06, 2009 | Garden

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