Introduction
This manual provides essential instructions for the safe and efficient installation, operation, and maintenance of your MARS 10588 1/2 HP Furnace Blower Motor. Please read this manual thoroughly before attempting any installation or operation to ensure proper function and to prevent potential hazards.
The MARS 10588 is a 1/2 horsepower, 208-230 volt, 1075 RPM motor designed for furnace blower applications. It features a reversible rotation (REV RT) for versatile use.
Safety Information
WARNING: Electrical shock hazard. Disconnect power before servicing.
- Always disconnect power to the furnace or HVAC system before installing, servicing, or performing any maintenance on the motor.
- Installation and wiring should only be performed by a qualified technician in accordance with all local and national electrical codes.
- Ensure the motor is properly grounded to prevent electrical shock.
- Do not operate the motor if it is damaged or if any wiring is exposed.
- Wear appropriate personal protective equipment (PPE), such as safety glasses and gloves, during installation and maintenance.
- Keep hands and loose clothing away from moving parts during operation.
Setup and Installation
Careful installation is crucial for the longevity and performance of your blower motor.
Unpacking and Inspection
Upon receiving the motor, carefully inspect the packaging for any signs of damage. Remove the motor from its packaging and check for any physical damage, such as dents, bent shafts, or broken components. If damage is found, do not proceed with installation and contact your supplier.

Image 1: The MARS 10588 1/2 HP Furnace Blower Motor. This image displays the cylindrical motor housing, the extended shaft for fan blade attachment, and the mounting studs. The motor is black with a silver top plate, and a product label is visible on the side.
Mounting
- Ensure the mounting location is clean, dry, and free from obstructions.
- Mount the motor securely using the provided mounting studs or appropriate brackets. Ensure the motor is level and stable to prevent vibration and premature wear.
- Verify that the fan blade (not included) can be properly attached to the motor shaft and rotates freely without hitting any obstructions within the blower housing.
Wiring
CAUTION: Incorrect wiring can damage the motor and pose a fire hazard.
- Confirm that the power supply voltage matches the motor's rated voltage (208-230V).
- Refer to the wiring diagram on the motor's label for specific connections. Typically, these motors have multiple wires for different speeds and capacitor connections.
- Connect the appropriate capacitor (if external) as specified by the motor's label.
- Ensure all electrical connections are tight and insulated to prevent short circuits.
- The motor is designed for reversible rotation. Follow the wiring diagram to achieve the desired rotation direction (clockwise or counter-clockwise) for your specific furnace application.
Operating Instructions
Once installed and wired correctly, the motor is ready for operation.
- Before restoring power, double-check all connections and ensure no tools or debris are left inside the blower housing.
- Restore power to the furnace or HVAC system.
- Initiate a test run of the furnace blower. Observe the motor for smooth operation, unusual noises, or excessive vibration.
- Verify that the fan blade is rotating in the correct direction and moving air effectively.
The motor is designed for continuous duty within its specified voltage and temperature ranges. Avoid operating the motor outside of these parameters.
Maintenance
Regular maintenance helps extend the life of your MARS 10588 motor and ensures optimal performance.
- Annual Inspection: At least once a year, inspect the motor for dust and debris accumulation. Clean the exterior of the motor using a soft brush or compressed air.
- Bearing Check: Listen for any unusual noises from the bearings. If the motor has oil ports (check the motor label), apply a few drops of electric motor oil annually. Many modern blower motors are permanently lubricated and do not require additional oiling. Refer to the motor's specific label for lubrication requirements.
- Wiring Inspection: Check all electrical connections for tightness and signs of wear or corrosion.
- Vibration Check: Ensure the motor remains securely mounted and that there is no excessive vibration during operation. Tighten any loose mounting hardware.
IMPORTANT: Always disconnect power before performing any maintenance.
Troubleshooting
This section provides solutions to common issues you might encounter with your blower motor.
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not start | No power supply Faulty wiring Bad capacitor Overload protector tripped | Check circuit breaker/fuse Verify wiring connections Test/replace capacitor Allow motor to cool, check for obstructions |
| Motor hums but does not turn | Bad capacitor Obstructed shaft/bearings Incorrect wiring | Test/replace capacitor Check for obstructions, clean/lubricate bearings Verify wiring diagram |
| Excessive noise or vibration | Loose mounting Worn bearings Unbalanced fan blade | Tighten mounting hardware Replace motor (if bearings are sealed) Inspect and balance fan blade |
| Motor overheats | Insufficient airflow Overload Incorrect voltage | Clean blower housing/filter Ensure motor is not undersized for load Verify power supply voltage |
If these troubleshooting steps do not resolve the issue, contact a qualified HVAC technician or the manufacturer for assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | MARS |
| Model Number | 10588 |
| Horsepower (HP) | 0.5 HP (1/2 HP) |
| Voltage | 208-230 Volts |
| Speed | 1075 RPM |
| Rotation | Reversible (REV RT) |
| Material | Copper (windings) |
| Item Weight | 15.2 ounces |
Warranty and Support
For specific warranty information, please refer to the documentation provided with your purchase or contact MARS directly. Typically, warranty coverage addresses manufacturing defects under normal use conditions.
For technical support or further assistance, please contact the manufacturer or your authorized dealer. Ensure you have your motor model number (10588) and purchase details available when seeking support.





