DOLPHIN RACE SERIES SPARE PARTS

The compatibility of Dolphin Carrera Series replacement parts is determined by the serial number plate located on the plastic base of the pool cleaner or on the inside side of the housing. This series includes models such as the Carrera 20, Carrera 30, and Carrera 35, which share the same drive structure but differ in electronic features and basket filtration levels.

To choose the right component, always check the official parts diagram:

• Carrera 20 models: use simple monocoque drive for the floor and cove.
• Carrera 30 and 35 models: feature dual active front brushing and combined ultra-fine panels for the wall and waterline.
• Power supplies: check whether your unit requires a standard 2-hour cycle or advanced Maytronics digital connectivity.

Climbing failures in residential pools are usually caused by simultaneous wear on the drive tracks and hardening of the active PVC brush. Over time and with exposure to chlorine, the drive rubber loses its elasticity and grip on ceramic or liner surfaces.

Before replacing mechanical components, check whether the filter basket is clogged. If fine microscopic dirt builds up on the filter panels, the suction flow drops dramatically, reducing the vertical thrust needed to keep the unit against the wall. If there is visible damage or looseness, replace both toothed tracks at the same time to balance the motor's rotation.

The technical difference lies in the micron size of the filter mesh mounted in the top-access frame. Spring filters have an opening of around 60 microns, making them ideal for opening the pool for the season, when leaves and bulky organic debris accumulate on the bottom, without clogging the turbine.

In contrast, the ultra-fine panels retain tiny particles as small as 15 microns, capturing fine dust, pollen, and mineral sediment suspended in the water. On Carrera Series robots, both types of frames are fully interchangeable within the same modular basket, allowing you to switch filtration according to the pool's needs throughout 2026.

Replacing the floating cable requires checking whether the model includes a swivel mechanism to prevent continuous twisting during navigation cycles. When purchasing an official replacement cable for the Dolphin Carrera Series, make sure the watertight seal connecting the wiring to the sealed motor unit remains intact.

Installation requires opening the watertight cable gland using the appropriate screwdrivers, disconnecting the power pins, and lightly lubricating the O-rings with neutral silicone grease. A faulty connection compromises the robot’s IP68 protection, which could lead to serious damage if chlorinated water enters the internal circuitry.

The roller bearing and PVC brushes should be replaced when the lateral play exceeds 3 millimeters or when the rubber blades show more than 50% wear compared with their original profile. If the brushes do not scrub with sufficient pressure, embedded dirt along the waterline and on the floor will not be dislodged before it is vacuumed up.

Replace these components when you notice:

• Abnormal vibration or skipping in the front drive during operation.
• Asymmetric wear on the brush treads.
• Difficulty turning the guide pulleys freely when the robot is disconnected.

To determine whether the problem is with the digital power supply or the drive motor, measure the output voltage at the transformer’s front connector using a multimeter set to DC. If the transformer delivers the nominal voltage specified by Maytronics (usually between 28 and 30 V DC with no load) and the pool cleaner does not perform its initial check when submerged, the fault lies with the circuit board or the internal motor.

If the power supply’s LED indicators do not light up after checking the mains outlet, the fault is usually limited to the switching board in the external transformer. In this case, simply replace the external power supply without dismantling the unit’s sealed chassis.

Original Dolphin Carrera Series replacement parts, certified by Maytronics, ensure the original watertight seal is maintained thanks to micrometric tolerances and sealing compounds resistant to chemically treated water. Generic compatible components often lack the vulcanized polyurethane gaskets needed to withstand continuous pressure at greater depths.

When installing official replacement housings, motor covers, or cable glands in your robot during 2026, you preserve the electrical integrity of the control electronics and extend the service life of your investment by preventing potential short circuits caused by internal leaks.