20 Most Recent Grundfos 96860172 NA 34 HP 110120V Booster Pump MQ335 () Questions & Answers

three phase three phase power = 1.5Kw single phase = 1.5KW/3 500w kw = 500w/.86 (.86 is power factor) kva = 581.39 watts current = kva / voltage voltage = ? 120 v at guess current = 581.39 / 120 current one phase = 4.84 amp three phase = 4.84 x 3 14.53 amps http://myelectrical.com/notes/entryid/8/three-phase-power-simple-calculations 240v would come out as 7.26 amps

If you can not hold your hand on the motor for a count of 10 when it has cut out, the motor has overheated and needs to be replaced or find some reason for an overload.

Put a valve anywhere in the pump outlet piping that is convenient and throttle the flow on the pressure side. Grundfos pumps are well built and will handle the small increase in pressure. Do NOT restrict the inlet to the pump as inlet restriction can lead to cavitation and early pump failure.

that looks like a fun 1 to work on. i think you might have trash in your impeller that will cause a drop in pressure .. this one will take some time to work on.. go slow ! here is a break down

All questions need full 'make model (what is is)' as first 3 words please. Very often, issues like this are a known fault and users tell the fix. You need to track down where the screech is coming from? Wheels Drive Belt Bearings Piston rings Or it may be battery operated? ..

Ensure the membrane is protected with sand before laying the stone to avoid piercing the membrane.