Pentair Whisperflo XF Pump Motor, 3 HP, 208-230-460 V, Three Phase | 354811S
Pentair
SKU: 354811S
Pentair 354811S WhisperFlo / WhisperFloXF Replacement Motor | 3 HP | 3-Phase | TEFC | 208–230/460V | Almond
The Pentair 354811S is an OEM replacement pump motor designed for select Pentair WhisperFlo and WhisperFloXF high-flow pump configurations. This is a heavy-duty, totally enclosed fan-cooled (TEFC) motor built for demanding pool and commercial circulation systems where 3-phase power is available. Replacing a failed motor restores reliable start-up, smooth operation, and full output.
Common Applications
- Pentair WhisperFlo pump configurations commonly referenced as WFK-12
- Pentair WhisperFloXF pump configurations commonly referenced as XFK-12
- Other WhisperFlo / WhisperFloXF variants that use a 3 HP, 3-phase, square-flange TEFC motor (model/revision dependent)
Always confirm compatibility using your pump model number and parts diagram, and match the motor’s phase/voltage to your power supply before ordering.
Motor Specifications
- Horsepower: 3.0 HP
- Phase: 3-phase
- Voltage: 208–230V / 460V
- Frequency: 60 Hz
- Enclosure: TEFC (Totally Enclosed Fan Cooled)
- Mount: Square flange (56Y-style pump duty)
- Color/Finish: Almond
Common Reasons to Replace the Motor
- Motor will not start, starts intermittently, or trips protection devices
- Overheating, abnormal fan noise, or repeated thermal shutdown
- Grinding/squealing bearing noise or excessive vibration
- Burnt odor, visible corrosion, or evidence of electrical damage
- Reduced performance after confirming the wet end (impeller/diffuser) is in good condition
Installation Notes
- Turn off power at the breaker/disconnect and verify power is off before servicing.
- Confirm your supply is 3-phase and wire the motor for the correct voltage (208–230V vs 460V).
- When swapping motors, it’s strongly recommended to replace the mechanical shaft seal and any disturbed O-rings/gaskets.
- Inspect the seal plate, diffuser, and impeller for heat damage if the pump has run dry.
- After reassembly, prime the pump fully and check for leaks at the seal plate seam and plumbing connections.
Related Products (Aqua Pool Supply)
- WhisperFlo XF Shaft Seals (Search)
- WhisperFlo XF Gasket / O-Ring Kits (Search)
- WhisperFlo / WhisperFloXF Impellers (Search)
- WhisperFlo / WhisperFloXF Diffusers (Search)
- Pool Equipment Surge Protection (Search)
Maintenance Tips
- Keep the equipment area ventilated and clear of debris so the TEFC motor fan can move air freely.
- Address wet-end leaks immediately—water intrusion and corrosion can shorten motor life.
- Maintain good flow (clean baskets/strainers and filters) to reduce load and heat.
- Verify proper bonding/grounding and stable supply voltage; electrical issues can damage pump motors.
- If installed in a harsh environment (salt air, chemical storage nearby), reduce chemical splash exposure and rinse exterior surfaces as needed.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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