Maytronics Dolphin Cainan 1

Maytronics Dolphin Cainan 1 exploded view & spare parts

The Maytronics Dolphin Cainan 1 is a compact, lightweight robotic pool cleaner designed for above-ground and in-ground pools up to 10 metres long. Like every machine that works hard in a chemically active, abrasive environment, it relies on a set of wearing parts that need periodic attention to keep it running at peak performance. This exploded-view diagram shows every component of the Cainan 1 broken down into its individual pieces, each assigned a reference number that maps directly to the genuine Maytronics spare parts listed on this page. Whether you need a quick filter swap or a full drive-train refresh, the diagram is your starting point.

How to use the numbered diagram to find the right part

Start by identifying the area of the robot where the fault or wear is visible — for example, a torn track, a cracked brush housing, or a blocked impeller. Locate that assembly in the exploded-view illustration and note its item number. Each numbered callout corresponds to an exact part listed below the diagram, complete with the official Maytronics part number, a short description, and an “Add to basket” button. If a single assembly contains several sub-parts — such as the motor unit with its seals and bearings — every sub-part carries its own reference number, so you can replace only what is worn rather than the entire assembly. Cross-check the part number shown in your robot’s original documentation or on the label of the old part before ordering to make absolutely sure of compatibility.

Main replaceable parts on the Dolphin Cainan 1

The Cainan 1 is built around a small number of core assemblies, all of which are available here as individual spares. The rubber tracks grip the pool floor and walls and propel the robot through its cleaning cycle; they are the most frequently replaced mechanical part on any tracked Dolphin model. The scrubbing brushes (typically a roller brush that spans the full cleaning width) loosen dirt and algae before the suction inlet draws debris into the filter chamber. Inside that chamber sit interchangeable fine and ultra-fine filter panels or filter bags, which trap particles down to very small sizes. The impeller is the pump rotor that generates suction; it sits within the motor unit, which also houses the drive electronics. An anti-tangle swivel connects the robot to its floating cable, which in turn runs back to the external power supply unit — the transformer/controller that converts mains current into the low-voltage DC the robot needs. Finally, the handle on top of the robot and the wheeled caddy (trolley) make lifting and storing the unit much easier between sessions.

Common wear items and when to replace them

Tracks are typically the first mechanical part to show wear: look for cracking, stretching, or sections that have started to peel away from the drive wheels. A slipping or skidding robot that can no longer climb slopes is a clear sign the tracks need changing. Brushes lose their bristle density over one or two seasons of regular use; once the bristles are visibly shortened or splayed, cleaning quality drops noticeably and replacement is due. Filter panels and bags should be rinsed after every session and inspected for tears or clogging that rinsing cannot clear — a damaged filter will allow fine debris to bypass the filtration and return to the water. The impeller should be checked if suction feels weak or if you hear an unusual grinding noise; small stones or grit can nick the blades and reduce efficiency. The floating cable and power supply unit are longer-lived but should be examined each season for cracked insulation, bent connector pins, or error codes on the supply’s indicator lights. If the cable jacket is damaged, replace it promptly — a compromised cable is both a performance and a safety concern.

Handle and caddy — easy overlooked, easy to replace

The carry handle on the Dolphin Cainan 1 takes repeated stress every time the robot is lifted from the pool with a full load of filtered debris. Hairline cracks around the handle mounting points are worth catching early; a broken handle mid-lift can mean a dropped robot and a cracked body. The caddy (trolley) is equally practical: it keeps the robot, cable, and power supply together as a single unit that rolls into storage and back to the pool edge with minimal effort. Caddy wheels and axle pins can wear or snap, and replacements are available separately so you do not need to replace the entire trolley frame.

Why genuine Maytronics parts matter for your Cainan 1

Genuine Maytronics spare parts are engineered to the same tolerances as the components fitted at the factory. Using original parts means brush rollers rotate at the designed clearance, track tension stays within spec, and — critically — seals around the motor unit maintain their waterproof rating. Third-party alternatives may appear compatible but are often made from lower-grade polymers and rubber compounds that degrade faster in chlorinated or salt water. Every genuine Dolphin part sold on poolparthub.com is sourced directly from Maytronics and is backed by the manufacturer’s quality assurance, giving you the confidence that one correct repair will last, rather than requiring a repeat fix a few months later.