NR1A-C 0002F88C Gemini Plus II 1/2 HP Air-Switch Pump Replacement

✓ Whirly Bros Compatibility Verified This replacement is configured for select whirlpool bathtubs originally equipped with the NR1A-C Gemini Plus II pump, including box part number 0002F88C and bulk part number 0002F00C. Verify the complete model and part number on your original pump label before ordering. NR1A-C 0002F88C Gemini Plus II Whirlpool Pump Replacement Replace a discontinued NR1A-C Gemini Plus II 1/2 HP whirlpool bathtub pump with a modern 120-volt, 8.5-amp replacement. The original NR1A-C was a cord-connected bath pump equipped with a built-in pneumatic air switch, allowing the pump to be operated by the bathtub’s existing air button. The replacement NR2A-C pump preserves the essential electrical and control configuration of the original NR1A-C while providing dependable circulation for the whirlpool jets. It is intended for installations requiring a power cord and an internal air switch rather than a separate electronic control box. Important Identification Notice The original NR1A-C includes a built-in air switch. Do not confuse it with the NR1-C, which uses a cord but does not have the same built-in air-switch configuration. Confirm the letter “A” in the model number and inspect the original pump for an air-tubing connection before ordering. Original NR1A-C Pump Identification Original model NR1A-C Original box part number 0002F88C Original bulk part number 0002F00C Original horsepower 1/2 HP Voltage 120V AC Frequency 50/60 Hz Built-in air switch Yes Electrical cord/plug Yes Original amperage Verify the original motor label Original availability Discontinued Replacement Pump Specifications Replacement model PB7500SCS Voltage 120V AC Frequency 50/60 Hz Replacement current draw 8.5 amps Built-in air switch Yes Electrical cord/plug Yes Application Whirlpool bathtub circulation The replacement pump has a higher stated performance rating than the original 1/2 HP model. Compatibility is based on the complete voltage, amperage, plumbing, control configuration and available installation space—not horsepower alone. Built-In Pneumatic Air-Switch Operation The NR1A-C configuration was designed to be operated by a pneumatic bathtub button. Pressing the button sends a pulse of air through a small tube to the switch mounted inside the pump. The first press turns the pump on, and the next press turns it off. Before ordering, confirm that a small air tube runs from the bathtub button directly to the original pump. An air tube should never be connected to an electrical receptacle or an electronic control unless that component is specifically designed for pneumatic operation. Why Choose This Replacement? Replacement solution for the discontinued NR1A-C pump Targets original box part number 0002F88C Also identifies original bulk part number 0002F00C Built-in pneumatic air switch preserves push-button operation 120V, 50/60 Hz electrical configuration 8.5-amp replacement pump Power cord for cord-connected installations Whirly Bros compatibility assistance before purchase Before Ordering Confirm that the original label shows NR1A-C, 0002F88C or 0002F00C. Verify that the original pump has a built-in pneumatic air switch. Confirm that a small air tube connects the bathtub button to the pump. Verify the original voltage from the motor label. Compare the suction inlet, discharge outlet and available installation space. Inspect the existing power cord and receptacle configuration. NR1A-C or NR1-C? Choose the NR1A-C replacement when the original pump has a built-in pneumatic air switch and a small air-tubing connection. If the original pump has a cord but no built-in air switch, it may be the NR1-C configuration instead. Installation Notes Disconnect electrical power to the bathtub before servicing the pump. Do not operate the pump unless the bathtub is filled above the highest jet. Inspect the plumbing unions and replace worn union gaskets. Make sure the pneumatic air tube is secure and free of cracks or moisture. Test the bathtub air button before completing the installation. Electrical or plumbing modifications should be performed by a qualified professional. Need Help Confirming Compatibility? Text photographs of the original pump label, air-switch connection, electrical cord and plumbing arrangement to (951) 897-1878. Whirly Bros can help confirm the correct replacement before you order. Compatibility and Trademark Notice: Gemini Plus II®, ITT Marlow®, Balboa® and related manufacturer names and part numbers are used solely to identify the original equipment and compatibility. Unless expressly stated otherwise, this replacement is not manufactured, sponsored or endorsed by the original equipment manufacturer. Final compatibility must be confirmed using the original pump label, electrical controls and plumbing configuration.