Filter Basket

A robotic pool cleaner filter basket collects leaves, dirt and debris picked up from the pool floor and walls. Water passes through the filter media while solid particles remain trapped inside the basket until it is removed and emptied.

Unlike a standard pool filtration system connected to the main plumbing, a robotic pool cleaner runs on its own internal pump and filter. The basket's design determines what types of debris the cleaner can trap and how often it needs emptying.

Structure and Operation

Most filter baskets consist of a rigid plastic frame fitted with mesh screens or pleated filter panels, along with a handle for easy removal.

During a cleaning cycle, the internal pump draws in water and loose debris. The filter media traps solid particles according to the size of its openings, while clean water flows back out into the pool. Many baskets also include a one-way flap or valve at the intake to stop debris from washing back into the water when the cleaner is lifted out.

Filter Basket Types

Robotic pool cleaners use three common filtration setups depending on the cleaning task:

• Standard Mesh Baskets: Built for larger debris like leaves, insects and small twigs. The open weave allows water to flow through easily, making it ideal for pools with regular leaf fall.

• Fine Filtration Media: Uses finer mesh or pleated panels to capture fine particles such as dust, silt and dead algae. Because the openings are much smaller, these filters clog faster under heavy loads.

• Interchangeable and Multi-Stage Systems: Allow users to swap between coarse and fine filter panels on the same frame, or combine an inner coarse screen with an outer fine cartridge to trap mixed debris in a single run.

Basket Capacity, Mesh Size and Performance

Filter performance comes down to two main factors: debris capacity and filtration rating.

Basket capacity (measured in litres) indicates how much material the basket holds before needing to be emptied. A larger capacity reduces how often you need to clear the basket during heavy leaf fall.

Mesh size refers to the physical openings in the screen, while the filtration rating (measured in microns) indicates the smallest particle size the filter is designed to trap. Coarse filters handle heavy leaf loads without losing suction, though fine dust will pass straight through. Fine filters trap microscopic sediment to clear cloudy water, but accumulated dirt restricts water flow much quicker.

Filter Maintenance and Signs of Clogging

As debris fills the basket and restricts water flow, the cleaner may move sluggishly, lose suction, or struggle to climb walls.

For routine filter maintenance:

1. Remove the basket: Disconnect the power supply, lift the cleaner from the pool, and open the filter compartment.

2. Empty and rinse: Tip out solid debris and hose the filter panels thoroughly with clean garden hose water. Avoid high-pressure cleaners, which can tear the mesh or damage the frame.

3. Inspect and refit: Check the screens for tears or lodged twigs around the intake flap, then secure the basket back inside the cleaner.

Cleaning frequency depends on the pool's workload. A basket may need emptying after a single cycle following a storm or windy day, whereas a clean pool requires less frequent attention.

Choosing a Filter Basket for Australian Pools

The right filter setup depends on what regularly falls into the pool:

• Leafy Gardens: Pools surrounded by eucalyptus trees and overhanging plants work best with a high-capacity standard mesh basket that can hold leaves, twigs and gum nuts without blocking water flow.

• Dust and Fine Sediment: Pools exposed to dry winds, unsealed roads or fine sand benefit from a fine filter panel that captures settled dust and silt.

• Mixed Debris: If a pool collects both leaves and fine dirt, use a dual-stage basket, or run a coarse basket first to clear bulky leaves before switching to a fine filter to clear the dust.

Replacement baskets and filter panels are model-specific, so always match the shape, attachment points and filtration options to your specific cleaner.