Myers HJ50D well pump
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Topic: Myers HJ50D well pump
Posted By: Ryan Renko
Subject: Myers HJ50D well pump
Date Posted: 12 Jun 2020 at 8:21pm
| Long post. My mother still has a deep well that provides water to the outside faucets of her 50 year old home. One day she called me and said the pump which is in the basement was running for no reason. I told her to unplug it. She took it upon herself to call a plumber to look at it. He said the pump was shot. Not believing him, I took the pump to a very reputable repair shop an they went through it and said it was fine. I reinstalled it and after priming still no water. Problem must be in the well I thought. I pulled 57' of plastic line out of the well and thought I found the issue! The larger line totally came loose from the ejector. Simple. Not wanting to ever go back down that well again, I flushed the lines with water(from the neighbors),installed a new foot valve, and cleaned the ejector inside and out. Water flowed through all three holes. Reinstalled the lines and slowly primed the pump feeling positive I fixed it. No!! I primed the pump with a t-fitting in the large suction line and after pouring 20 + gallons I would place my hand over the spot where the cap should be and plugged it in. Nothing. Prime and repeat. Nothing. Instead of feeling suction on my hand from the large suction line I was getting pressure! I would take the palm of my hand away and water would shoot out the suction line. Strange. I put the cap on the t-fitting instead of the palm of my hand and the pressure was getting so much in the pump the new shaft seal started leaking!! All necessary valves were open and the pump sits on a big pressure tank that was empty. Why would the suction line develop pressure like that?? Finding a qualified pump repairman is very hard to find nowadays. Thank you for any help in this matter, Ryan |
Replies:
Posted By: Hubert (Ga)engine7
Date Posted: 12 Jun 2020 at 9:13pm
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I am no plumber not a pump expert but I have worked on a few over the years. Anytime I have to pull plastic pipe or any pipe that is that old I replace it along with the jet package/foot valve and also check the adjustment on the valve that sends part of the water back down the smaller pipe to drive more water up the larger line. If you are building that much pressure though the foot valve should be good. Could be a hairline split in one of the plastic pipes, seen that before. We still have some good plumbers around here that do pump work and don;t try to rip you off. Thought I have a bad pump at the farm a couple of years back, had the checkbook ready to shell out $$$. Plumber that put the pump in in '83 said it was just the motor switch, $40 for the switch and service call. I gave him a bit extra to take his wife out to dinner.
------------- Just an old country boy saved by the grace of God. |
Posted By: steve(ill)
Date Posted: 03 Jan 2022 at 1:00pm
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You can only "LIFT" water a max of 30 feet... Normally under 20 ft is good... If you are over that you either use a submerged pump, or a "deep well" pump... Sounds like that is what you have ?... Should to TWO PLASTIC Lines going down to the foot valve, one larger than the other.. What you are doing is priming one line to the pump to get it started.. The pump then puts maybe 20% of the water BACK DOWN the other tube toward the check valve.. There is a venturi at the bottom that the PRESSURIZED water sprays thru and pulls additional water from the well and carries it up toward the pump which is helping to SUCK the water up...... water then exits the pump and again, maybe 80% goes to the house and 20% goes back DOWN THE PIPE to the venturi to help LIFT additional water............ so yes.. your suction line can feel like it has pressure inside.
how far down is the water level in the well.. below the PUMP ? what is the condition of the VENTURI above the check valve ?
------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 03 Jan 2022 at 1:03pm
 https://www1.agric.gov.ab.ca/$department/deptdocs.nsf/ba3468a2a8681f69872569d60073fde1/2a18a0905731cd4b87256a610060652d/$FILE/agdex716c11.pdf Operation
The pump and pipe system are full of water. The water in
the pump impeller is thrown outwards by the vanes of the
spinning impeller (see insert detail Figure 2).
As the vanes throw the water out, a vacuum is created at
the eye of the impeller, and more water is drawn in to
replace that which was thrown out. Some of the water
discharged by the impeller passes out of the pump and
into the pressure tank. The rest is recirculated through the
drive line to the injector in the well.
In the injector, the nozzle and the venturi create a vacuum.
This vacuum draws water from the well, through the foot
valve. As the water passes through the venturi tube into
the suction line, the pressure is increased sufficiently to
force the water back to the pump impeller.
The injector nozzle and venturi tube size must be selected
according to the pumping depth, the distance the pump is
offset from the well and the size of the pump.
------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 03 Jan 2022 at 1:11pm
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if your PUMP is good, then normally the venturi is worn out, or the NOZZLE is broke / gone. ------------- Like them all, but love the "B"s. |
Posted By: Ray54
Date Posted: 03 Jan 2022 at 3:16pm
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Had a engineered drip irrigation system in a vineyard. Had venture to suck fertilizer up into the drip system. All worked well for a few fertilizer applications, then nothing would get sucked out of the fertilizer tank. Turned out residue was attacking to the plastic venture. Sometimes soaking it in acid cleaned enough. Residue slowed the flow and venture could not suck up the fertilizer. The finale solution was a very small 12 V pump. So as Steve suggested replace the works at the bottom venture and foot valve .
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Posted By: steve(ill)
Date Posted: 03 Jan 2022 at 6:51pm
the little white NOZZLE shoots into the lONG VENTURI... If you big pipe broke off, it might have broke the VENTURI off ? ------------- Like them all, but love the "B"s. |