Product Description

Restore reliable pool or spa circulation with the Century BN37V1 Two-Speed Pump Motor. Designed for compatible above-ground pool, spa, and jetted-tub pumps, this motor delivers 1 HP on high speed and 1/8 HP on low speed.

The two-speed design provides full-power operation at 3450 RPM for filtration and higher-flow applications, along with lower-speed operation at 1725 RPM for compatible circulation requirements. It operates on 115V single-phase power and features a 48Y frame, thru-bolt mounting, rigid base, and threaded pump shaft.

Automatic thermal-overload protection helps protect the motor from damaging operating temperatures, while ball bearings and a drip-proof enclosure support dependable pool-equipment operation.

This listing includes the replacement motor only. The pump housing, impeller, mechanical shaft seal, wiring switch, and other pump-specific components are not included.

Key Features

• Two-speed pool and spa pump motor
• 1 HP high-speed output
• 1/8 HP low-speed output
• 115V electrical configuration
• 3450/1725 RPM operation
• 48Y frame
• Thru-bolt mounting configuration
• Threaded pump shaft
• Rigid mounting base
• Counterclockwise rotation when viewed from the pump end
• Automatic thermal-overload protection
• Ball bearings at both ends
• Open drip-proof enclosure
• Continuous-duty design
• Direct replacement for Century model BN37V1

Product Benefits

Two-Speed Operation

The motor provides high-speed operation for maximum pump performance and low-speed operation for compatible circulation or spa applications.

Direct Replacement Design

The 48Y frame, thru-bolt mounting pattern, and threaded shaft are designed for compatible above-ground pool and spa pump wet ends.

Built-In Motor Protection

Automatic thermal protection helps shut down the motor if operating temperatures exceed its designed range.

Durable Construction

A rolled-steel motor frame, ball bearings, rigid base, and drip-proof enclosure provide reliable performance in properly installed pool-equipment applications.

Replace the Motor, Not the Entire Pump

The BN37V1 allows a compatible pump wet end to remain in service when only the motor has failed.

Specifications

The electrical, mechanical, dimensional, and barcode information is consistent with current BN37V1 manufacturer and motor-distributor specifications.

Recommended Applications

The Century BN37V1 is designed for compatible:

• Above-ground swimming pool pumps
• Spa and hot-tub pumps
• Jetted-tub pumps
• Two-speed circulation systems
• Pumps requiring a 48Y thru-bolt motor
• Pump wet ends requiring a threaded motor shaft

This motor is not intended as a universal replacement for every 1 HP pump motor.

Compatibility Information

Before ordering, compare the BN37V1 specifications with the existing motor nameplate and pump requirements.

Confirm all of the following:

• 115V electrical supply
• Two-speed operation
• 1 HP high-speed rating
• 1/8 HP low-speed rating
• 48Y frame
• Thru-bolt mounting
• Threaded shaft
• Counterclockwise pump-end rotation
• Compatible amperage
• Compatible shaft dimensions
• Correct pump impeller and mechanical seal

The BN37V1 is commonly used in compatible above-ground pool and spa pump applications and may cross-reference certain Hayward Power-Flo and Power-Flo Matrix motor configurations, including applications using SPX1510Z2XE or SPX1510Z24XE. Always verify the complete pump model and original motor nameplate before ordering.

Common Replacement References

Depending on the original pump and motor configuration, BN37V1 may replace or cross-reference numbers such as:

• BN37
• BN-37
• AOSBN37V1
• CRMBN37V1
• SPX1510Z2XE
• SPX1510Z24XE
• SP1510Z2XE
• SP1510Z24XE

A cross-reference number does not guarantee compatibility. Voltage, frame, mounting style, shaft, horsepower, amperage, rotation, and pump wet-end requirements must all match.

Package Includes

• One Century BN37V1 two-speed replacement motor

Not Included

• Complete pool or spa pump
• Pump housing or wet end
• Impeller
• Diffuser
• Mechanical shaft seal
• Pump seal kit
• High/low speed switch
• Power cord
• Timer or automation controls
• Wiring connectors
• Installation hardware not supplied with the motor
• Installation labor

The BN37V1 is generally supplied without a separate high/low speed toggle switch. A compatible switch, timer, controller, or existing pump control system is required to select the operating speed.

When to Replace the Motor

Motor replacement may be necessary when:

• The motor hums but does not start
• The motor runs only on one speed
• Bearings produce grinding or screeching noises
• The motor repeatedly overheats
• The thermal protector cycles frequently
• The motor trips the circuit breaker
• The shaft is seized or difficult to rotate
• A burnt electrical odor is present
• The motor has severe corrosion or water damage
• Electrical testing confirms winding or component failure

Similar symptoms can also result from a blocked impeller, damaged capacitor, incorrect voltage, failed switch, poor wiring connection, or pump mechanical problem. Diagnose the complete pump before replacing the motor.

Installation Information

Pool and spa motor replacement should be completed by a qualified pool professional or electrician.

Important installation requirements include:

1. Disconnect power at the circuit breaker before servicing the pump.
2. Confirm that the circuit is de-energized with an appropriate testing instrument.
3. Verify that the electrical supply is 115V.
4. Follow the wiring diagram printed on the motor nameplate.
5. Confirm correct high-speed, low-speed, common, and ground connections.
6. Properly ground and bond the motor.
7. Install a new pump-specific mechanical shaft seal.
8. Inspect the impeller, diffuser, housing, and O-rings for damage.
9. Confirm that the motor shaft and impeller threads are compatible.
10. Prime the pump completely before operation.
11. Check for water leaks around the shaft seal.
12. Test both high- and low-speed operation.

Do not reuse a worn mechanical shaft seal. A leaking seal can allow water to reach the motor bearing and cause premature motor failure.

Important Electrical Information

The BN37V1 is a 115V-only motor. It should not be connected to a 230V supply.

Two-speed motors require the correct switching arrangement. High- and low-speed terminals must not be energized simultaneously unless specifically permitted by the manufacturer’s wiring design.

Incorrect voltage, wiring, grounding, or speed-control installation can cause equipment damage, electrical shock, fire, serious injury, or death.

Frequently Asked Questions

Is the BN37V1 a complete pool pump?

No. This listing is for the replacement electric motor only. The pump wet end, housing, impeller, diffuser, basket, and plumbing are not included.

What is the horsepower on each speed?

The motor is rated at 1 HP on high speed and approximately 1/8 HP on low speed.

What are the operating speeds?

The motor operates at approximately 3450 RPM on high speed and 1725 RPM on low speed.

Is this motor dual voltage?

No. The BN37V1 is designed for 115V operation only.

What is the motor frame?

It uses a 48Y thru-bolt frame with a rigid base.

Does it have a threaded shaft?

Yes. The motor has a threaded shaft designed to accept a compatible pump impeller.

Is the high/low speed switch included?

No. A separate switch or compatible pump control system is required unless the existing pump already provides the necessary speed control.

Does the motor include a pump shaft seal?

No. Mechanical shaft seals are pump-specific and are sold separately.

Should the shaft seal be replaced with the motor?

Yes. Installing a new pump-specific shaft seal during motor replacement is strongly recommended.

Will this replace any 1 HP motor?

No. Horsepower alone does not determine compatibility. Voltage, frame, shaft, mounting style, speed, rotation, service factor, and pump model must also match.

Can it be used with a variable-speed controller?

No. This is a conventional two-speed induction motor. It is not a variable-speed motor and should only be operated through an approved two-speed switching system.

What direction does the shaft rotate?

The shaft rotates counterclockwise when viewed from the pump end.

Is this motor intended for in-ground pool pumps?

It is primarily designed for compatible above-ground pool, spa, and jetted-tub pump applications. Verify all specifications before using it in another application.