MOTOR 2HP SQ FL THD 230V UP RATED
Product Overview
A direct-replacement 56Y square flange motor built to restore original pump pressure without re-plumbing.
Built on a rigid 56Y frame with a threaded shaft, the Century B2855 pool pump motor provides a direct 2HP 230V up-rated replacement for worn square flange motors. Century designs these units with open drip-proof (ODP) construction to dissipate heat effectively in outdoor equipment pads. Swapping out a failed motor with the exact B2855 specification restores filtration flow and head pressure while reusing your existing pump housing.
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Benefits & What Makes It Different
Threaded Shaft 56Y Fit
Features a 56Y frame with a threaded shaft that mates directly to square flange pump bodies like Pentair WhisperFlo and Sta-Rite Max-E-Pro.
Dedicated 230V Operation
Delivers balanced 2HP up-rated electrical performance matched to standard 230-volt pool subpanels.
ODP Thermal Management
Open drip-proof enclosure allows continuous airflow over the windings to resist heat buildup during long daily run cycles.
Compatibility
- Pentair WhisperFlo square flange pumps
- Pentair Challenger square flange series
- Sta-Rite Max-E-Pro square flange models
- Standard 56Y frame square flange pump wet ends
When To Use This
Pro Tip
Never reuse the old mechanical shaft seal when installing a new motor. High mineral water or dry friction will compromise an old seal quickly, allowing water to track along the shaft and destroy the front bearing.
Common Questions & Instructions
Which pump models are compatible with the Century B2855 motor?
The Century B2855 fits square flange pump wet ends requiring a 56Y frame, including Pentair WhisperFlo, Challenger, and Sta-Rite Max-E-Pro housings rated for a 2HP up-rated motor.
What symptoms indicate my existing pool motor has failed?
Screeching or grinding sounds from worn bearings, a humming noise with failure to spin, and persistent electrical breaker trips upon startup indicate the motor requires replacement.
Can the B2855 motor run on a 115V circuit?
No. The B2855 is configured exclusively for 230V single-phase power. Supplying 115V will cause high amperage draw, humming, and immediate thermal shutdown.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
