Maytronics Dolphin M500 IOT CB

Maytronics Dolphin M500 IOT CB exploded view & spare parts

The Maytronics Dolphin M500 IOT CB is a premium robotic pool cleaner designed for residential pools up to 15 metres in length, delivering thorough floor, wall, and waterline cleaning with triple active scrubbing. Its “CB” (Combined Brush) configuration makes it especially well suited to rough pool surfaces such as pebble, granite, or exposed aggregate finishes. Controlled via the MyDolphin™ Plus app over Wi-Fi, it offers smart scheduling, real-time notifications, and manual spot-cleaning — all from your smartphone. Like every precision machine, it relies on a set of key components that will naturally wear over time. The exploded-view diagram on this page maps every one of those parts to a reference number so you can identify exactly what you need and order the correct genuine Maytronics replacement with confidence.

How to use the exploded-view diagram to find your part

The exploded diagram shows the Dolphin M500 IOT CB disassembled into all of its individual components, each labelled with a unique reference number. Start by locating the area of the robot where the fault or wear has occurred — for example, the drive train, filter bay, or cable connection — then cross-reference the corresponding numbered item in the parts list below the diagram. Each number links directly to the correct spare part in our catalogue, complete with the official Maytronics part number, a short description, and compatibility information. If you are unsure whether a part matches your specific serial number or production batch, our team is happy to help before you place an order.

Tracks and drive system

The rubber tracks are the M500 IOT CB’s primary means of locomotion, gripping pool surfaces to propel the robot across floors, up walls, and along the waterline. Because they are in constant contact with abrasive pool surfaces and pool chemicals, tracks are among the fastest-wearing components on any robotic cleaner. Inspect the track treads regularly for cracking, thinning, or loss of grip — if the robot struggles to climb walls or veers off course, worn tracks are a common cause. Replacement is straightforward and requires no specialist tools: the track assembly simply unclips from the drive wheels. Always replace both tracks as a matched pair to keep drive balanced and navigation accurate.

Combined brushes

The CB (Combined Brush) roller is the defining feature of this M500 variant, pairing rubber fins with bristle sections to tackle both smooth and rough pool surfaces effectively. The brushes spin at twice the robot’s travel speed to dislodge algae, biofilm, and stubborn debris from pebblecrete and similar textured finishes. Over a full season of regular use, bristles flatten and rubber fins can split or harden, reducing scrubbing efficiency. A noticeable drop in water clarity after a cleaning cycle, or visible debris remaining on pool walls, is a reliable sign that a brush replacement is due. Check the brush roll ends and bearings at the same time, as worn bearings can cause the brush to drag rather than spin freely.

Filter panels, cartridges, and filter bags

The Dolphin M500 IOT CB uses a multi-level filtration system with both fine and ultra-fine filter cartridges — or an optional filter bag — to capture everything from large leaves down to fine dust and algae particles. The filter panels are accessed by lifting the top lid of the robot and pulling out the filter basket; they can be rinsed clean with a garden hose after each use. Over time, the mesh on filter panels becomes clogged with mineral scale and fine debris that rinsing alone cannot remove, reducing flow and making the pump work harder. Replacement is recommended at least once per season, or sooner if the robot leaves visible debris behind or the water flow from the outlet appears reduced. Keeping a spare set of filter panels on hand means cleaning never has to pause while you wait for a delivery.

Impeller, motor unit, floating cable, and power supply

The impeller draws water through the filter and expels it as a jet that aids locomotion; it sits directly behind the filter bay and can become jammed by fine grit or hair if the filters are not cleaned regularly. The motor unit — which drives both propulsion and the pump — is a sealed assembly that should be replaced as a complete unit if it shows signs of reduced suction, unusual noise, or failure to start. The 18-metre swivel floating cable is engineered to prevent tangles, but the cable jacket can crack near the robot’s cable entry point after prolonged UV and chlorine exposure; inspect it each season and replace it before a full break occurs. The multi-function power supply handles all scheduling and programming functions for the M500 IOT CB, and a faulty unit will typically manifest as the robot failing to respond to commands or not starting at all — always use the genuine Maytronics power supply to ensure correct voltage, IoT connectivity, and warranty validity.

Handle and caddy

The top-mounted handle allows you to lift the M500 IOT CB safely out of the pool and let it drain before carrying it to the caddy. Handles can become brittle with prolonged exposure to sunlight and pool chemicals, so replace them at the first sign of cracking to avoid the risk of dropping the robot. The included caddy makes storing and transporting the robot simple and protects both the cable and the unit itself between cleaning cycles. Caddy wheels, axles, and cable hooks are all available as individual spare parts, meaning a damaged trolley does not need to be replaced in its entirety.

Why genuine Maytronics parts matter for your M500 IOT CB

Maytronics designs every Dolphin component to work as part of a precisely balanced system: motor torque, brush speed, impeller flow rate, and filtration fineness are all matched to one another. Using non-genuine parts risks reducing cleaning performance, voiding your warranty, and — in the case of the power supply — potentially damaging the IoT electronics that underpin the MyDolphin™ Plus app connectivity. All spare parts listed on this page are 100% genuine Maytronics components, supplied with original part numbers and backed by Maytronics’ own quality assurance. Ordering genuine parts from poolparthub.com ensures your Dolphin M500 IOT CB continues to perform exactly as it left the factory, season after season.