How Does a Robotic Pool Cleaner Work?

A pool robot cleaner works by combining brushes, suction, filtration and navigation to clean your swimming pool automatically.

It moves across the pool floor, climbs the walls and cleans the waterline, depending on the model. As it moves, its brushes loosen dirt and debris, while an internal pump draws the material into a filter basket.

Modern cordless pool robots also use sensors and smart navigation to plan cleaning paths, avoid obstacles and cover different areas of the pool.

But how do all these parts work together? Let's take a closer look at what happens inside a robotic pool cleaner.

How Does a Pool Robot Cleaner Do Its Job?

A robotic pool cleaner works through four main processes: movement, brushing, suction and filtration.

First, its motor powers the wheels or tracks, allowing the robot to move around the pool. Rotating brushes then loosen dirt from the floor and walls. At the same time, an internal pump creates suction, pulling water and debris through the intake and into the filter basket.

The filter catches leaves, sand, insects and other particles, while the filtered water flows back into the pool.

Sensors and navigation software help the robot follow a planned cleaning route rather than moving randomly around the pool.

Here is how each part works.

1. Intelligent Navigation and Movement

A pool robot needs to know where it is going before it can clean the pool properly.

Modern robotic pool cleaners use sensors and navigation systems to understand their position, detect obstacles and plan their movements.

Basic navigation systems use sensors to monitor the robot's direction and movement. More advanced models combine cameras, infrared sensors and ultrasonic technology to recognise pool features and adjust their cleaning paths.

For example, the Beatbot AquaSense 2 Ultra uses HybridSense AI Pool Mapping, which combines a front facing AI camera, infrared sensors and ultrasonic sensors to understand the pool layout.

This helps it navigate different pool shapes, recognise steps and platforms, and plan more efficient cleaning routes.

Not every pool robot uses AI mapping. The navigation technology varies between models, but the goal is the same: cover the pool more effectively while reducing unnecessary movement.

2. Brushing and Scrubbing Pool Surfaces

Once the robot starts moving, its brushes begin working against the pool surfaces.

Rotating brushes or roller brushes loosen dirt, algae, sunscreen residue and other buildup from the floor and walls.

This is particularly useful around the waterline, where body oils, sunscreen and other residue can gradually form visible marks.

Different robotic cleaners use different brush designs. Some have brushes underneath the body, while others use dual group roller brush systems to improve cleaning coverage and traction.

The brushes loosen the debris so the suction system can collect it more easily.

3. Suction and Water Circulation Inside the Robot

Brushing alone is not enough. The loosened dirt and debris also need to be collected.

This is where the internal pump comes in.

An electric motor drives the pump, creating water flow through the robot's intake. As water enters, it carries leaves, sand, insects and other debris towards the filter basket.

After passing through the filter, the water flows back into the swimming pool.

The robot therefore performs its own suction and filtration rather than relying on the pool's main circulation pump to collect debris.

The strength of the suction system and the size of the intake can affect how well a cleaner handles different types of debris.

4. Filtration and Debris Collection

The filter basket is where the dirt collected by the robot ends up.

Most robotic pool cleaners use a removable filter basket or cartridge. It catches debris as water passes through, allowing the cleaned water to return to the pool.

Different filters are designed to collect different particle sizes.

• Standard filtration: Collects everyday debris such as leaves, insects, sand and larger dirt particles.

• Fine filtration: Captures smaller particles that may pass through a standard filter.

• Ultra fine filtration: Uses finer filter material to collect very small particles such as fine dust and pollen.

For example, Beatbot Sora 70 and Sora 30 come with standard 150 µm filtration and support an optional 3 µm Ultra-Fine Dual Filter Basket.

The filter basket needs to be emptied and rinsed regularly. A full or dirty filter can restrict water flow and reduce cleaning performance.

What Are the Main Parts Inside a Robotic Pool Cleaner?

A robotic pool cleaner may look like one compact machine, but several components work together to keep it moving and cleaning.

Electric Motor and Drive System

The electric motor provides the power needed to move the robot and operate its cleaning system.

Depending on the design, separate motors may control the drive system, pump and brushes.

The drive system uses wheels or tracks to move the cleaner across the pool floor and help it climb walls.

Some advanced models use multiple motors to improve movement, traction and manoeuvrability.

Pump and Suction System

The pump creates the water flow that draws debris into the robot.

Water enters through the suction inlet, passes through the filter and returns to the pool.

A well designed pump and intake system help the cleaner collect different types of debris without interrupting the cleaning cycle.

Filter Basket

The filter basket catches the debris collected during cleaning.

It is usually removable, making it easy to empty and rinse after each cleaning cycle.

Some models also support interchangeable filters, allowing pool owners to choose between standard and finer filtration depending on the cleaning task.

Rollers and Brushes

Brushes make direct contact with the pool surfaces to loosen dirt and buildup.

They can be made from different materials depending on the cleaner's design and the pool surfaces it supports.

Dual group roller brushes, for example, provide more contact points and help the robot maintain traction while moving across floors and climbing walls.

Sensors and Navigation System

Sensors help the robot understand its surroundings and respond to different pool features.

Depending on the model, these may include ultrasonic sensors, infrared sensors, cameras and other movement sensors.

Advanced navigation systems can use this information to recognise obstacles, identify pool platforms and adjust cleaning routes.

Rechargeable Battery

Most modern cordless robotic pool cleaners use built in rechargeable lithium ion batteries.

The battery powers the motors, pump, brushes and navigation system without requiring a power cable to trail through the pool.

Once the cleaning cycle is complete or the battery needs charging, the robot can be removed from the pool and connected to its charging system.

Some advanced models can also return to the water surface automatically, making them easier to retrieve.

What Areas of the Pool Can a Robotic Cleaner Clean?

Not every pool robot cleans the same areas. Some focus mainly on the floor, while more advanced models can cover the walls, waterline, shallow platforms and even the water surface.

Pool Floor Cleaning

The pool floor is where most heavy debris settles.

Leaves, sand, dust, insects and other material collect at the bottom, particularly after windy weather or heavy pool use.

The robot moves across the floor while its brushes loosen dirt and its suction system draws the debris into the filter basket.

Some models use planned cleaning paths to improve floor coverage and reduce missed areas.

Pool Wall Cleaning

Pool walls can collect dirt, algae and other buildup over time.

A wall climbing robotic cleaner uses its drive system, traction and suction to move vertically along the pool walls while its brushes scrub the surface.

This helps reduce the need for manual wall brushing.

However, wall climbing capability varies between models, so check the cleaning coverage before choosing a cleaner.

Waterline Cleaning

The waterline is one of the areas that often needs extra attention.

Sunscreen, body oils and other residue can collect where the water meets the pool wall, gradually forming visible marks.

A robotic cleaner with automatic waterline scrubbing can climb to this area and clean along the surface.

This is particularly useful during the warmer months when pools receive more frequent use.

Steps and Shallow Platforms

Steps, benches and shallow platforms can be difficult for traditional pool cleaners to reach.

Some advanced robotic cleaners use obstacle detection and specialised navigation to clean these areas.

For example, Beatbot Sora 70 and Sora 30 can clean suitable shallow platforms with a water depth of more than 20 cm, provided the platform meets the required dimensions.

However, not every robotic pool cleaner can clean narrow steps or small ledges. Always check the supported dimensions and water depth for your model.

Water Surface Cleaning

Leaves, pollen, insects and other debris can float on the water before eventually sinking to the bottom.

Some modern robotic pool cleaners can actively collect this floating debris rather than leaving all surface cleaning to the pool's skimmer box.

For example, the Beatbot Sora 70 uses its JetPulse system to draw floating debris towards the suction inlet through two converging water jets.

The AquaSense 2 Ultra also supports active water surface cleaning.

One important distinction: automatic water surface parking is not the same as active surface cleaning. Some models, such as the Sora 30, automatically return to the water surface for easy retrieval but do not actively skim floating debris.

What Types of Debris Can Pool Robot Cleaners Remove?

A robotic pool cleaner can collect different types of debris depending on its suction system and filter design.

Common examples include:

The filter plays an important role here. A standard filter basket is suitable for everyday cleaning, while an optional ultra fine filter can capture smaller particles.

For Australian pools surrounded by trees or exposed to wind and dust, choosing the right filter capacity can make everyday maintenance easier.

Corded vs Cordless Pool Robot Cleaners

Pool robot cleaners generally come in two power designs: corded and cordless.

Corded pool cleaners

Corded robotic cleaners use an external power supply connected to the robot through a cable. The power supply remains outside the pool and controls the cleaner during operation.

The cable provides continuous power, but it can sometimes get in the way as the robot moves around the pool.

Cordless pool cleaners

Cordless robotic cleaners use a built in rechargeable battery, so there is no trailing power cable during cleaning.

This gives the robot more freedom to move around the pool and makes setup simpler.

Beatbot's robotic pool cleaner range in Australia focuses on cordless cleaning. Models such as AquaSense 2 Ultra, Sora 70 and Sora 30 combine rechargeable batteries with their own suction, brushing and navigation systems.

Some models also feature automatic water surface parking, making it easier to retrieve the cleaner when the cycle finishes.

How Beatbot Robotic Pool Cleaners Bring These Technologies Together

Beatbot combines brushing, suction, filtration and smart navigation to make pool maintenance easier.

Different models offer different cleaning coverage, so the right choice depends on the size and layout of your pool and the areas you want to clean.

Beatbot AquaSense 2 Ultra – Advanced AI Pool Mapping

The Beatbot AquaSense 2 Ultra brings together AI navigation and comprehensive pool cleaning.

Its HybridSense AI Pool Mapping combines a front facing AI camera, infrared sensors and ultrasonic sensors to understand the pool layout and plan cleaning routes.

It offers 5 in 1 cleaning:

• Floor cleaning: Collects dirt, sand and other debris from the pool bottom.

• Wall cleaning: Scrubs pool walls and removes surface buildup.

• Waterline cleaning: Targets oils and residue around the waterline.

• Surface cleaning: Collects floating leaves and other debris.

• Water clarification: ClearWater technology binds fine particles together to make them easier to filter.

It is a suitable option for pool owners who want advanced navigation and comprehensive cleaning across different pool areas.

Beatbot Sora 70 – Cleaning From the Water Surface to the Pool Floor

The Beatbot Sora 70 combines underwater cleaning with active water surface cleaning.

Its JetPulse system uses two converging water jets to draw floating leaves and debris towards the suction inlet.

It also offers:

• 6,800 GPH suction power: Helps collect leaves, dirt and other debris.

• Dual group roller brushes: Improve floor and wall cleaning.

• 6L filter basket: Holds everyday pool debris.

• Shallow platform cleaning: Reaches suitable shallow areas down to 20 cm.

• Waterline cleaning: Removes oils and residue from the waterline.

• Smart water surface parking: Automatically returns to the surface for easier retrieval.

With its combination of surface and underwater cleaning, the Sora 70 is a useful choice for pools that collect plenty of floating leaves and everyday debris.

Beatbot Sora 30 – Everyday Cleaning With Strong Suction

The Beatbot Sora 30(P3) focuses on comprehensive underwater cleaning.

Its dual group roller brush system and strong suction help clean the floor, walls, waterline and suitable shallow platforms.

Other features include:

• 6,800 GPH suction power: Collects everyday dirt and heavier debris.

• 5.2L filter basket: Provides room for leaves, sand and other material.

• Ultrasonic obstacle detection: Helps the robot navigate different pool layouts.

• Optimised S shaped cleaning paths: Supports more consistent floor coverage.

• Smart water surface parking: Makes the robot easier to retrieve after cleaning.

The Sora 30 is a practical choice for pool owners who want reliable floor, wall and waterline cleaning without needing active surface skimming.

Does a Robotic Pool Cleaner Replace Your Pool Pump and Filter?

No. A robotic pool cleaner has its own motor, pump and filtration system, but it does not replace your swimming pool's main circulation system.

The robotic cleaner collects debris from pool surfaces, while the main pool pump and filter circulate and treat the water.

You still need to maintain suitable chlorine levels, balance the water chemistry, clean the skimmer basket and keep the main filtration system working properly.

A robotic pool cleaner is designed to reduce manual cleaning, not replace every part of regular pool maintenance.

Final Thoughts

Pool robot cleaners work by combining movement, brushing, suction, filtration and navigation to remove dirt and debris automatically.

Basic models focus on floor cleaning, while more advanced cleaners can also handle walls, waterlines, shallow platforms and floating debris.

Understanding how these systems work makes it easier to choose the right cleaner for your pool.

Whether you need everyday floor cleaning or more complete coverage, Beatbot AquaSense 2 Ultra, Sora 70 and Sora 30 offer different combinations of cleaning and navigation technology to help keep your pool clean throughout the swimming season.

FAQs

Do robotic pool cleaners need the pool pump to be running?

No. Robotic pool cleaners have their own motor, pump and filtration system, so they can clean independently of the main pool pump. However, the pool's circulation and filtration system should still run as part of regular water maintenance.

How does a robotic pool cleaner know where to go?

Pool robots use sensors and navigation software to monitor their movement, detect obstacles and plan cleaning paths. Advanced models, such as the Beatbot AquaSense 2 Ultra, use AI cameras, infrared and ultrasonic sensors to map the pool layout.

Do robotic pool cleaners clean the water?

They filter water as it passes through the robot, collecting leaves, sand, dirt and other particles. However, they do not replace the pool's main filtration system or chemical treatment. Some models also include water clarification technology to help collect fine particles.

Can a robotic pool cleaner clean pool walls and the waterline?

Yes, if the model supports wall climbing and waterline cleaning. These cleaners use traction and suction to climb the walls while their brushes remove dirt and residue from the surfaces.

Can a pool robot cleaner pick up leaves and sand?

Yes. Most robotic pool cleaners can collect leaves, sand, insects and everyday debris. The type and size of debris a cleaner can capture depend on its suction inlet and filter system.

How often should I run a robotic pool cleaner?

It depends on how quickly your pool collects debris and how often it is used. Pools surrounded by trees or exposed to wind and dust may need more frequent cleaning. Regular cleaning helps prevent debris from building up on the pool floor and walls.

How do you clean a robotic pool cleaner after use?

Remove the filter basket, empty the collected debris and rinse it with clean water. Also check the brushes and suction inlet for trapped leaves or other material. Regular maintenance helps keep the cleaner working efficiently.