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john green

  • Posts: 51
pump playing up ??
« on: August 05, 2009, 07:13:16 pm »
If a pump  has a  reduction of water flow without any adjusting of the flow using a varistream or inline valve,does the indicate  the pump is on the blink ? It can go from a normal flow to a trickle,I've checked for blockages and all is well,it happens maybe 1- 2  times a day,when it does happen I swop over to my back up pump,,,any ideas ??
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jeff1

  • Posts: 5855
Re: pump playing up ??
« Reply #1 on: August 05, 2009, 08:14:52 pm »
It could be sucking in a tiny amount of air
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Mike #1

  • Posts: 4668
Re: pump playing up ??
« Reply #2 on: August 05, 2009, 08:20:55 pm »
most likely an air lock happened to me at first for no apparent reason , all i do is turn the the flowmaster right up to push out airlock then back to normal, One more think if you are using a trolley system don't let containers run dry otherwise you will get airlocks
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smearo

  • Posts: 556
Re: pump playing up ??
« Reply #3 on: August 05, 2009, 08:26:15 pm »
how long does it take to clear then once you have turned the flow up..
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Central Window Cleaners

  • Posts: 845
Re: pump playing up ??
« Reply #4 on: August 05, 2009, 08:32:14 pm »
I had simular problem with my shurflo pump, turned out to be a burnt out pressure switch. got a replacement from maplins for £1.50
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john green

  • Posts: 51
Re: pump playing up ??
« Reply #5 on: August 06, 2009, 04:40:28 pm »
when it starts to play up it will last for a 1/2 hr to an hour,so switch over pump,
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