Description
Astralpool impeller 1 HP 50 Hz 4405010416
The Astralpool impeller 1 HP 50 Hz 4405010416 is the original replacement rotor for selected Astralpool pool pumps equipped with a
1 horsepower, 50 hertz motor. This hydraulic component generates the flow and pressure needed for daily filtration, and replacing a
worn or damaged impeller is essential to restore the pump’s original performance on compatible residential pool installations.
Function of the Astralpool 1 HP 50 Hz impeller
Inside the pump wet end, the impeller is mounted directly on the motor shaft and rotates at high speed. As it turns, it draws water in
through the suction port and pushes it out towards the diffuser and discharge. The specific geometry of the Astralpool impeller 1 HP
50 Hz 4405010416 is matched to the 50 hertz motor speed and to the pump body, so the filtration system delivers the designed flow rate
and head for a 1 HP 50 Hz configuration.
A correctly sized and undamaged impeller helps the pump to prime quickly, maintain strong suction at skimmers and drains and circulate
water efficiently through the filter, heater and treatment equipment.
Design and construction
The Astralpool impeller 1 HP 50 Hz 4405010416 is moulded from high quality plastic designed for long term use in treated pool water.
Its blades and hub are precisely shaped so that clearances with the diffuser and pump housing remain within the tolerances defined by
the manufacturer.
- Durable plastic body suitable for properly balanced chlorinated or saltwater pools.
- Vane profile optimised for 1 HP 50 Hz operation on compatible Astralpool pumps.
- Central hub shaped for secure mounting on the motor shaft using the original fixing system.
- Balanced construction to support smooth, low vibration running when installed correctly.
Compatibility and typical applications
This impeller is intended for specific Astralpool pool pumps that list reference 4405010416 in their exploded view or spare parts list
for the 1 HP 50 Hz version. It is typically used in small to medium residential pools where the pump provides circulation through sand,
glass or cartridge filters.
- Compatible with Astralpool circulation pumps configured with a 1 HP 50 Hz motor.
- Suitable for in ground or above ground pools that match the pump’s performance range.
- Direct replacement part for installations using the original 4405010416 impeller.
Before ordering, always check the pump identification label and compare with the official parts diagram to confirm that 4405010416 is
the correct impeller reference for your model.
When to replace the impeller 4405010416
Even though it is protected inside the housing, the impeller works at high speed and can be affected over time by fine abrasive
particles, occasional cavitation and normal mechanical stress. Visible damage or subtle wear quickly reduces flow and pressure.
- Loss of flow or filter pressure even though the prefilter basket and filter are clean.
- Cracks, chips or missing sections on the impeller blades.
- Erosion or rounding of the vane edges and hub contact surfaces.
- New vibration or rattling noises coming from the pump body.
Replacing a tired or damaged impeller with the original Astralpool impeller 1 HP 50 Hz 4405010416 is one of the most effective ways to
recover the pump’s designed hydraulic performance.
Installation recommendations
Installation of the Astralpool impeller 1 HP 50 Hz 4405010416 should always take place with the pump isolated electrically and the
hydraulic circuit depressurised. The operation is often combined with replacement of the mechanical seal and nearby gaskets to avoid
repeated disassembly.
- Switch off the power supply, close isolation valves and drain the pump housing completely.
- Remove the prefilter lid and basket, then separate the wet end from the motor according to the pump instructions.
- Hold the motor shaft at the rear or on the flats provided and unscrew or unclip the old impeller.
- Inspect the mechanical seal and diffuser and replace them if they show signs of wear or damage.
- Fit the new impeller 4405010416 on the shaft, following the original fixing method and tightening direction.
- Reassemble the pump, prime the prefilter with water and check that the impeller turns freely by hand before start up.
After restarting filtration, monitor noise level, pressure and any vibrations during the first minutes to confirm that the assembly is
correct and that the pump runs smoothly.
Good practice for long impeller life
With the Astralpool impeller 1 HP 50 Hz 4405010416 correctly installed, a few simple maintenance habits help extend its service life and
keep the filtration system efficient.
- Clean the prefilter basket regularly so large debris cannot reach the impeller.
- Avoid running the pump dry or with closed valves, which increases cavitation risk.
- Maintain balanced water chemistry to reduce long term stress on plastic parts.
- Investigate any unusual noise, vibration or pressure changes early to prevent further damage.
By using the original Astralpool impeller 1 HP 50 Hz 4405010416 on compatible pumps and respecting these operating guidelines, residential
pools benefit from stable circulation, effective filtration and more comfortable daily use.
