How To Replace a Pool Pump Motor

How To Replace a Pool Pump Motor

A failing pool pump motor can disrupt your pool’s circulation, leading to costly issues or cloudy water. Purchasing a high-quality, compatible motor from PST Pool Supplies ensures energy efficiency and long-lasting performance. This guide will help you as a pool owner with basic mechanical skills to select and install a new motor.

Why buy from us?

  • Energy Efficiency: Our motors save on electricity bills with modern, efficient designs.
  • Perfect Fit: Motors compatible with top brands like Hayward, Pentair, and Jandy.
  • Reliability: Backed by a solid warranty for peace of mind.

Tools and Materials Needed

  • Replacement Motor: Read our guide on How to Choose the Right Replacement Motor
  • Screwdrivers: Phillips and flathead.
  • Wrenches: Adjustable or socket wrench set.
  • Pliers: Needle-nose and standard.
  • Lubricant: Silicone-based for seals.
  • Replacement Seals and Gaskets: Click here to find your pump's seals and gaskets
  • Safety Gear: Gloves and safety glasses.
  • Multimeter: For electrical testing (optional). Multimeter: For electrical testing (optional).
  • Clean Cloth: For cleaning components.

Step-by-Step Instructions

1. Identify and Purchase a Replacement Motor

Check your current motor’s label for the part number (PART), catalog (CAT), or model number (MOD) and type it in the PST Pool Supplies search bar.

A pool pump motor label showing HP, voltage, and frame size, next to a new motor from our Shopify store.Image suggestion: Photograph your motor’s label beside one of your replacement motors.

2. Purchase Replacement Seals & Gaskets

To find the right shaft seal and Go-Kit for your pool pump, follow these steps:

  1. Identify the Pump Make and Model:
    Check the pump housing for a label with the manufacturer’s name, model, and model number. This is usually on the main housing. Common brands include Pentair, Hayward, Sta-Rite, or Jandy. If the label is missing, look for part numbers on components like the impeller, diffuser, or strainer lid, or take clear photos of the pump and contact a pool expert at sales@pstpoolsupplies.com

  2. Check Impeller and Motor Details: The impeller part number or motor specifications (e.g., horsepower, RPM) can help narrow down the correct seal. For example, an impeller like SP3021-C in a Hayward pump typically uses a PS-201 or PS-3868 for saltwater.

  3. Match to a Go-Kit or Seal: Use the pump model to find the corresponding Go-Kit or shaft seal. Go-Kits include the shaft seal, diffuser O-ring, housing gasket, and lid O-ring. For example
    •  Pentair WhisperFlo: Go-Kit32 (PS-1000 seal).
    • Hayward Super Pump: Go-Kit3 (PS-201 seal). 
    • Sta-Rite Dura-Glas: Go-Kit6 (pre-1998).

3. Turn Off Power

  • Safety First: Switch off the pool pump’s circuit breaker.
  • Confirm power is off using a multimeter or by ensuring the pump doesn’t run.

4. Drain the Pump

  • Close pool valves to stop water flow.
  • Remove the drain plug from the pump housing to drain water.
  • Place a bucket underneath to catch residual water.

4. Disconnect the Old Motor

  • Disconnect the motor’s electrical wiring. Take a photo for reference.
  • Loosen the conduit or wiring cover to access terminals.
  • Label wires (e.g., L1, L2, Ground) for easy reconnection.

5. Remove the Old Motor

  • Loosen the bolts (usually 4) securing the motor to the pump housing.
  • Gently pull the motor free, noting the impeller and seal orientation.
  • Unscrew the impeller from the motor shaft (typically counterclockwise).

6. Replace Seals for a Leak-Free Fit

  • Inspect the shaft seal and O-rings for wear. Replace with the new high-quality seals that you purchased from PST Pool Supplies.
  • Apply silicone lubricant to new seals for easy installation.

7. Install Your New Motor

  • Attach the impeller to your new motor’s shaft, securing it per manufacturer specs.
  • Align the motor from our Shopify store with the pump housing and tighten bolts evenly.
  • Ensure proper alignment to prevent vibrations.

8. Reconnect Electrical Wiring

  • Reconnect wires to the new motor using your photo or labels as a guide.
  • Secure the conduit or wiring cover tightly.
  • Verify connections to avoid electrical issues.

9. Test Your New Motor

  • Reinstall the drain plug and open pool valves.
  • Restore power at the circuit breaker.
  • Run the pump to check for leaks, noise, or vibrations. Our motors ensure quiet, smooth operation.
  • If issues occur, recheck seals, wiring, or alignment.

10. Enjoy Your Upgraded Pump

  • Once the pump runs flawlessly, secure all components and clean up.
  • Enjoy the efficiency and reliability of your new motor from our Shopify store.

Why Shop with PST Pool Supplies?

  • Save Money: Energy-efficient motors lower your bills.
  • Trusted Quality: Our motors come with a warranty for lasting performance.
  • Fast Delivery: Get your motor quickly to restore your pool.
  • Shop now at our Shopify store for the best selection!

Safety Precautions

  • Always disconnect power before working.
  • Wear gloves and safety glasses to stay safe.
  • Avoid running the pump dry to protect the impeller and seals.

Don’t let a faulty motor ruin your pool season! Visit our store today to find the perfect replacement motor and keep your pool crystal clear.

Disclaimer: If you’re unsure about any step, consult a certified pool technician to avoid injury or damage.

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