AstralPool CTX 400C 1.5HP Pool Pump – Compatible Replacement

This 1.5HP pool pump is designed as a direct, plug-in compatible replacement for AstralPool CTX 400C installations, offering increased circulation capacity while retaining quiet and efficient operation. With no plumbing modifications needed, it is an ideal choice for medium to large residential pools and systems with additional equipment such as heaters, chlorinators, water features or solar heating.

Constructed for Australian conditions and Australian made, the pump body is crafted from high quality engineering grade thermoplastic, providing excellent resistance to corrosion, UV exposure and harsh pool chemistries. Internally, the stainless steel shaft, ceramic mechanical seal and true carbon face provide dependable performance and extended service life. The balanced impeller and diffuser system delivers robust flow with minimal noise, giving reliable circulation without disruption.

This pump forms part of a complete compatible replacement range, with other horsepower options available (1HP, 1.25HP, and 2HP) to suit a wide variety of pool sizes and system needs. All models are built around the same installation footprint, making future upgrades or replacements simple. Dual size barrel unions suit both 40mm and 50mm PVC pipe connections for flexible plumbing, and the clear inspection lid allows easy access for routine maintenance.

Compatibility note: This is an aftermarket compatible replacement designed to suit AstralPool CTX installations. It is not manufactured by, endorsed by, or affiliated with AstralPool.

Key Features

• Direct plug-in compatible replacement for CTX 400C
  Designed for easy swap-out with no plumbing changes required.

• Higher flow capability with 1.5HP motor
  Ideal for larger pools or systems with additional equipment demands.

• Australian made and built for local conditions
  Engineered to suit harsh climates and everyday pool use.

• Tough corrosion-resistant construction
  Engineering grade thermoplastic body stands up to UV, chemicals and weather.

• Quiet operation
  Balanced impeller and diffuser design reduces noise during operation.

• Durable internal components
  Stainless steel shaft, ceramic mechanical seal and true carbon face for long life.

• Suitable for 40mm and 50mm plumbing
  Supplied barrel unions adapt to common Australian PVC sizes.

• Easy maintenance access
  Clear inspection lid allows fast, tool-free basket cleaning.

Specifications – 1.5HP Version

• Horsepower: 1.5 HP

• Flow Rate @ 8m Head: Approx. 380 LPM

• Voltage / Phase: 240V / Single Phase

• Power Input: Approx. 1320 Watts

• Full Load Amps: Approx. 6 A

• Noise Level: Approx. 64 dB(A) @ 1 metre

• Pipe Connections: 40mm or 50mm PVC

• Maximum Water Temperature: 45°C

• Construction: Engineering grade thermoplastic, corrosion resistant

• Shaft & Seal: Stainless steel shaft, ceramic mechanical seal, true carbon face

• Manufacture: Australia

Installation Guide (Overview)

1. Position the pump on a solid, level base close to the pool water level.

2. Ensure adequate clearance around the motor for ventilation and cooling.

3. Connect suction and discharge pipework using the supplied barrel unions.

4. Confirm all pipe connections are airtight and valves are open.

5. Prime the pump by filling the strainer basket with water.

6. Connect to a 240V power supply protected by an RCD.

7. Start the pump and confirm steady water flow.

All installations must comply with relevant Australian electrical and plumbing standards.

Maintenance Tips

• Clean the strainer basket regularly to maintain proper water flow.

• Inspect and lubricate the lid O-ring with silicone grease when required.

• Never operate the pump without water in the system.

• Maintain balanced pool water chemistry to protect internal components.

• Keep ventilation areas clear to prevent motor overheating.

Warranty

This pool pump includes a limited manufacturer’s warranty of 3 years on the pump body, 2 years on the motor and 12 months on the mechanical seal, subject to correct installation and normal operating conditions.

What’s in the Box

• 1 × 1.5HP Pool Pump

• Barrel unions suitable for 40mm and 50mm PVC pipe

• Clear inspection lid with strainer basket fitted

• Installation and operation manual