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Thread: Pentair Whisperflow tripping 20A breaker

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    Pentair Whisperflow tripping 20A breaker

    I installed a 1.5hp Pentair Whisperflow today I got off c-list for $220. He replaced impeller and seals.

    Anyway, I set the jumpers for low voltage to go with my 110v supply. Initially, it didn't want to turn but rather buzzed loudly. Drained the capacitor and tried again and it ran just fine for about 15 minuted and tripped my 20A breaker. I tested the Amperage and it is pulling 23Amps but the motor label shows 16A max. The capacitor is spiking at 300v initially and settles at 270v after startup. This seems wrong to me and I think it may explain why I am having the high amperage issue.

    Anyway, are there any suggestions? Would a bad capacitor cause this? I ohmed the cap both directions and it did not charge and go open. I am just concerned if I change the cap, some other underlying issue will cause it to go bad.

    How much do those caps go for?
    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Re: Pentain Whisperflow tripping 20A breaker

    8 amp for a 1.5hp at 110v seems low and more likely its 8amp at 220v

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    Re: Pentair Whisperflow tripping 20A breaker

    You are correct. The 115v is 16A. I will edit original post to reflect that info. Thanks.
    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    bobodaclown's Avatar
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    Re: Pentair Whisperflow tripping 20A breaker

    How old is the breaker? They do wear out. Also check the tightness of all the connections. Cap you should be able to get for $10 or so.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Pentair Whisperflow tripping 20A breaker

    Breaker is 1 year old. Seems to be fine tripping at 23A.

    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    Re: Pentair Whisperflow tripping 20A breaker

    Motor had a bad winding. Trash. Had my old motor bearings changed and plumbed in my old pump.

    I am tired of getting screwed on c-list by scumbags.

    $220 hard lesson.

    22,000 rectangular plaster. Hayward everything on a C1750 cartridge filter and a Liquidator.

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    bobodaclown's Avatar
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    Re: Pentair Whisperflow tripping 20A breaker

    Sorry to hear.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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