Laundry bucket pump


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Old 11-01-22, 08:46 AM
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Laundry bucket pump

I installed one of these systems, got a few bugs worked out and it was ticking along fantastically for a few weeks. Last night it started to run while the sink was draining(as it should) however it didnít stop pumping, or rather didnít seem to actually pump properly. It did manage to pump waste water some distance up the rise and past the back flow valve, but not high enough to actually empty the bucket or sink.
I took the whole think apart today, no blockages, no build up of debris, no impeller issue etc.
I put it all back together and it worked.
I see two possible differences though I could likely be missing something. Last night the water was warm, likely in the 100-110F range. I saw on the pump that for some odd reason itís range is only up to 70F. Seems low for a laundry pump, but ok. The pump ran and moved water but just didnít seem to have the pressure to make the head it needed.
the other thing was I sucked all the water out of the system and it was straight clean water. Last night it was very soapy and frothy. Iím wondering if the excessively soapy water led to cavitation and air bubble build up around the impeller causing it to lose its ability to build / overcome head pressure. This also would seem problematic for a system that is meant to be used in the laundry.sept tub.

any thoughts on cause and possible solutions appreciated
 
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Old 11-01-22, 10:49 AM
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What pump are you using?

Where is the output of the pump discharging? How is the piping run?
 
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Old 11-01-22, 10:54 AM
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Itís a flotec laundry tray system (bucket pump)



this sketch is an approximation of the lay out in plan and cross section. The Chester valve has been removed so it just vents to the room for the moment. There is a check valve on the pump on the discharge line inside the bucket and came factory that way.
 
 

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