Maytronics Dolphin 4 IOT CB QP NC

Maytronics Dolphin 4 IOT CB QP NC exploded view & spare parts

This page contains the official exploded-view diagram and a full list of genuine spare parts for the Maytronics Dolphin 4 IOT CB QP NC robotic pool cleaner. The Dolphin 4 IOT is a connected, commercial-grade robot built around the CB (Climbing Brush) drive system, Quick-Park (QP) cable management, and a No-Corrosion (NC) chassis treatment, making it a particularly capable cleaner for pools that demand wall-climbing performance and long-term reliability. Whether you need a routine consumable or a complete motor unit, every part listed here is a genuine Maytronics component sourced directly through official supply channels and guaranteed to fit your robot without modification.

How to use the numbered exploded-view diagram

The diagram on this page maps every component of the Dolphin 4 IOT CB QP NC to a unique reference number. Start by identifying the area of the robot where the fault or wear has occurred — drive system, filtration chamber, hydraulic section, or electrical assembly — then locate the matching number on the diagram. Each number links directly to the correct spare part in our catalogue, complete with the official Maytronics part code. This approach eliminates guesswork and ensures you order the right item first time. If you are unsure which assembly a component belongs to, hover over the diagram zones or use the part-number search at the top of the page. Keeping note of your robot’s serial number (printed on the underside label) is also useful when cross-referencing parts, particularly for the motor unit and power supply, where variant-specific codes apply.

Main replaceable parts on the Dolphin 4 IOT CB QP NC

The robot is built around a set of clearly defined, user-serviceable assemblies. The rubber tracks wrap the drive wheels and provide traction on all pool surfaces; they are sold in matched pairs to keep drive balanced. The climbing brushes (CB) are the active scrubbing elements on each side roller and are specifically engineered for the climbing-brush configuration to maintain grip on vertical walls and the waterline. The filter panels and filter bags sit inside the top-access filter basket and are available in fine and ultra-fine grades to suit different debris loads. The impeller is the turbine blade that draws water through the filtration chamber; it works together with the motor unit, which houses both the drive and pump motors in a single sealed assembly. The swivel floating cable connects the robot to the power supply while the Quick-Park system keeps it tangle-free at the water surface; replacement cables are available in standard lengths with the integrated swivel joint. The power supply unit (IOT variant) is the cloud-connected controller that manages cleaning cycles and app connectivity. Finally, the handle and caddy (trolley) complete the system, making lifting and storage straightforward between sessions.

Common wear items and when to replace them

Tracks and brushes are the parts that contact pool surfaces on every single cycle and will gradually wear down. Inspect the tracks each season for cracking, stretching, or missing lugs — a track that no longer sits flush against the drive wheel will cause the robot to lose traction on walls. Climbing brushes should be checked every few months; when the bristles are visibly splayed or the brush body shows flat spots, scrubbing efficiency drops and the robot may stall on inclines. Filter panels and bags need rinsing after every cleaning session and should be replaced when fibres break down or panels develop tears that allow fine debris to pass through. The impeller is susceptible to damage from hard debris such as stones or gravel; a rattling sound during operation or reduced suction is a strong indicator that the impeller needs inspection. The floating cable should be examined for kinks, nicks in the outer sheath, or any stiffness in the swivel joint, as a compromised cable is both a performance issue and a safety concern. The power supply, being an electronic component, rarely needs replacement under normal use but should be kept dry and stored indoors during the off-season.

Why genuine Maytronics parts matter for your Dolphin 4 IOT

Maytronics has been engineering robotic pool cleaners for decades, and the components fitted to the Dolphin 4 IOT CB QP NC are designed to precise tolerances that aftermarket alternatives rarely match. Genuine tracks and brushes are formulated from materials that resist the combined effects of chlorine, UV exposure, and continuous abrasion. A genuine impeller is balanced and profiled to deliver the exact flow rate the motor was sized for; an ill-fitting copy can reduce suction, strain the motor bearings, and shorten the service life of the entire drive assembly. For connected models like the 4 IOT, the power supply also contains firmware that communicates with the MyDolphin™ Plus app — a non-genuine substitute cannot replicate this and will disable remote scheduling and smart notifications entirely. Using genuine parts also protects any remaining warranty and means each component has passed Maytronics’ own quality standards before leaving the factory.

Caddy and handle — caring for the full system

The caddy (trolley) and handle are often overlooked until they fail, but both play an important role in protecting the robot between uses. The caddy keeps the Dolphin 4 IOT elevated off the ground, allowing it to drain fully after retrieval and preventing the tracks and brushes from resting on hard surfaces that could deform them over time. Inspect the caddy frame and wheels periodically for corrosion or cracked plastic, particularly if stored outdoors. The handle, attached to the top of the robot body, takes the full weight of the unit during lifting — typically over five kilograms when wet — so any signs of cracking or play in the mounting points should be addressed promptly. Both parts are available as genuine Maytronics replacements and can be fitted without specialist tools.