How to repair the pressure switch in a Shurflo pump
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- čas přidán 7. 09. 2024
- This video shows how to replace the microswitch in a Shurflo diaphragm pump. The microswitch is an Omron V-15-2C26-K and is very easy to replace in the pressure switch housing of the pump.
I'm not sponsored by Element14 however I found their service to be exceptional and the link to the switch is shown below.
au.element14.c...
I hope you enjoyed the video and found it useful.
Thanks,big help for us facing the same problem ..
Exellent information. Just what i needed. Thank you
Glad it helped Randy. Currently doing all the winches on the yacht....needed some serious maintenance.
Spot on! This helped us fix an identical problem. When replacing unit, how many ft-lbs (newton-meters) are the screws tightened? At 4:42, the neck spot should be seen by a derma doc. I cruised the tropics for 3 years and I got some barnacles too. Beam breezes.
Would have been nice if you showed the pressure valve assembly not just the switch
Thanks from Brazil,hahahha Nice video
Nicely done! I'm working on the same issue. Does your pump shut-off when the faucets are all OFF?
I'm having trouble getting the pump to shut-off automatically. I have two springs (big and small). I put the big spring into the Micro Switch Housing and the little spring underneath the nickle-sized diaphragm
on the pump housing. I think that's the correct way, but no joy getting the pump to shut-off with a pressure spike (i.e., faucets OFF).
Arthur, the fresh water system on my yacht uses an accumulator which is fed by this pump. I don't recall any springs in the switch assembly...the pump turns off when the pressure switch is activated by the diaphragm. There are a number of variants of the switch having different force settings on the actuator button. A switch with a larger setting would tend to stay on longer.
@@mcmarine4270 Thanks for your thoughtful reply. In my pump, a Shurflo 2088-423-344, the switch housing (that houses the micro-switch) contains a spring loaded button (the spring inside the switch housing is the larger of two springs in the entire pump head). When assembled, the button faces the coin-shaped diaphragm on the pump head. Once the faucets are turned OFF, the water inside the operating pump builds water pressure. That increased pressure pushes a plunger inside the pump head out of a small, tube channel. Between the plunger and the coin-shaped diaphragm, is a plastic, "ram rod" (for lack of a better word) with a shaft connected to a round head. A second, smaller spring, sits in the channel between the plunger and the ram rod. The center of the smaller spring goes inside the ram rod shaft.
As the pressure builds with closing faucets, the plunger rides out in that channel, exerting force on the ram rod. That force on the ram rod head pushes the coin-shaped diaphragm out; making contact with the button on the switch assembly.
Once the pressure builds to 45PSI, the button compresses the larger spring, which in turn depresses a rocker that sits atop the micro-switch. As the rocker depresses, it contacts the switch; turning it off.
From what I can gather, the larger spring inside the switch housing requires 45PSI to compress. My particular pump has no set-screw to adjust cut-off pressure.
You can see the springs in the following helpful video. The larger spring is discovered by the mechanic between 10 and 11 minutes. He discovers the smaller spring around 19 minute mark. czcams.com/video/1I7lEZDPUuI/video.html