Description
Astralpool fan and rear cover set 0.75 – 1 HP 4405010147
The Astralpool fan and rear cover set 0.75 – 1 HP 4405010147 is an original replacement kit for the cooling fan and back cover of
selected Astralpool pool pump motors in the three quarter to one horsepower range. It restores correct motor ventilation and mechanical
protection at the rear of the motor, helping to keep compatible pumps running cool, quiet and reliable season after season.
Complete rear ventilation and protection kit
This set combines the motor cooling fan with the matching rear motor cover. The fan draws air through the motor frame to remove heat,
while the cover protects the rear bearing, terminals and winding ends from dust and splashes. By renewing both parts together, the
Astralpool fan and rear cover set 4405010147 re-establishes the original cooling airflow and enclosure design as specified by the
manufacturer.
- Original Astralpool fan and rear cover for 0.75 to 1 HP motors.
- Restores correct airflow through the motor cooling channels.
- Protects internal components from dust, dirt and accidental splashes.
- Designed for residential pool pump installations supplied by PoolParthub.com.
Role in motor cooling and reliability
On a pool pump that runs many hours per day, efficient cooling is essential. The fan pushes air across the motor frame fins, carrying
away heat produced by the windings and rotor. The rear cover guides this airflow and prevents debris from reaching the rotating parts.
When either component is cracked, deformed or missing, the motor can overheat, become noisy or suffer reduced service life.
- Helps maintain normal motor operating temperature under continuous duty.
- Supports longer bearing and winding life by avoiding overheating.
- Contributes to low vibration and quieter operation when the fan is balanced and intact.
Compatibility and typical applications
The Astralpool fan and rear cover set 0.75 – 1 HP 4405010147 is intended for specific Astralpool pool pumps that use C71 frame motors in
the 0.75 to 1 HP range and that list this reference in their exploded view or spare parts list. It is frequently used when refurbishing
older pumps where the original fan blades have broken or the rear cover has been damaged by impact or corrosion.
- Suitable for Astralpool circulation pumps with 0.75–1 HP C71 motors specifying kit 4405010147.
- Ideal during motor bearing replacement, repainting or general overhaul.
- Direct replacement that follows the original geometry for airflow and protection.
Always verify the pump model and motor data on the identification plate and compare with the official parts diagram to confirm that this
set is the correct choice for your installation.
When to replace the fan and rear cover
Although these components are outside the hydraulic section, they are exposed to heat, vibration and the humid atmosphere of the plant
room. Over time, plastic can harden, crack or deform, and the fan can become unbalanced if blades are damaged.
- Broken, cracked or missing fan blades causing noise or reduced airflow.
- Rear cover damaged, warped or with broken ventilation slots or fixing points.
- Signs of overheating on the motor body, such as discolouration or strong odour.
- Visible dust build up or contamination inside the motor due to an open or broken cover.
Replacing both elements with the Astralpool fan and rear cover set 0.75 – 1 HP 4405010147 is a straightforward way to restore original
cooling performance and protection.
Installation guidelines
Installing this set is normally done during a motor service or when the pump is removed from the filtration circuit. All work must be
performed with the electrical supply isolated and the pump secured.
- Switch off and lock out the power supply to the pump motor.
- Remove the existing rear cover and carefully pull the old fan from the motor shaft.
- Clean the shaft and motor rear area, removing dust and any loose debris.
- Press the new fan onto the shaft to the specified position, making sure it is fully seated and aligned.
- Fit the new rear cover using the original screws or a matching screw set, ensuring all ventilation openings are unobstructed.
After reassembly, rotate the shaft by hand to check for free, smooth movement and verify that the fan does not rub on the cover or
stator. Once the pump is back in place and primed, observe the first start up for any unusual noise or vibration.
Good practice for long term motor performance
With a new Astralpool fan and rear cover set 0.75 – 1 HP 4405010147 installed, a few simple habits help keep the motor running smoothly
and efficiently over many swimming seasons.
- Keep the technical room well ventilated and avoid blocking airflow around the motor.
- Do not cover or obstruct the ventilation slots in the rear cover or motor frame.
- Avoid directing strong water jets towards the motor when cleaning the plant room.
- Inspect the fan and cover during annual maintenance and replace them again if damage reappears.
By using the original Astralpool fan and rear cover set 0.75 – 1 HP 4405010147 on compatible motors, you help safeguard motor cooling and
mechanical protection, supporting quiet, reliable pool filtration in everyday use.
