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Spare parts for Dolphin EX 30

Spare parts for Dolphin EX 30
Position Product Quantity Unit price
1
Regular price 39,95 €
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2
Regular price 54,90 €
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3
Regular price 169,00 €
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4
Regular price 49,90 €
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5
Regular price 138,00 €
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6
Regular price 89,90 €
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7
Regular price 79,90 €
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8
Regular price 6,90 €
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9
Regular price 22,95 €
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10
Regular price 115,00 €
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11
Regular price 119,00 €
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12
Regular price 7,95 €
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13
Regular price 3,94 €
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14
Regular price 399,00 €
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15
Regular price 2,75 €
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16
Regular price 5,60 €
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17
Regular price 269,00 €
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18
Regular price 259,00 €
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19
Regular price 19,95 €
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20
Regular price 13,78 €
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21
Regular price 14,50 €
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22
Regular price 6,90 €
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23
Regular price 2,50 €
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24
Regular price 8,28 €
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25
Regular price 17,94 €
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26
Regular price 79,90 €
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27
Regular price 12,92 €
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28
Regular price 3,88 €
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29
Regular price 5,25 €
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30
Regular price 9,90 €
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31
Regular price 15,90 €
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32
Regular price 37,95 €
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33
Regular price 9,90 €
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34
Regular price 6,01 €
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35
Regular price 109,00 €
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36
Regular price 48,90 €
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Replacement Parts for the Dolphin EX 30 Robot: Filters, Brushes, and Genuine Parts Maytronics

The Dolphin EX 30 is an electric pool cleaning robot manufactured by Maytronics and marketed under the brand Dolphin, a global leader in robotic pool cleaning. It is part of the EX series designed for residential pools that require an agile robot with good traction to clean the pool floor and walls.

Like all Dolphin robots, their replacement parts are organized into three main groups based on replacement frequency: cleaning consumables (filters and brushes, replaced every 1–2 seasons depending on use), mechanical traction parts (belts and tracks, when a loss of traction is detected), and electrical components (power supply, cable, and connectors, replaced as needed due to failure). The internal electronic and mechanical components have a long service life with proper maintenance.

At Quimipool, you’ll find the original Maytronics replacement parts for the EX 30. Since this model has several variations depending on the generation (basket or cartridge filtration, different cable lengths), we recommend contacting our technical support team by sending a photo of the unit and the serial number to confirm the correct part number before placing your order. You can also check out the complete section on pool cleaner replacement parts at Dolphin.

Related categories: Pool Cleaner Replacement Parts Dolphin · Pool Cleaners Dolphin · Automatic Pool Cleaners · Robot Pool Cleaner Replacement Parts · Electric Pool Cleaners

Dolphin EX 30: Model Specifications

Data Details
Brand Dolphin (Maytronics)
Series EX — mid-range residential line
Type Corded electric pool cleaner robot
Cleaning Bottom and walls (check coverage based on specific model)
Filtration system May be a filter basket or cartridges, depending on the model version
Self-floating cable Standard lengths: 12, 15, and 18 meters, depending on the version
Important note Before ordering any specific replacement part, verify the exact generation of the EX 30 (year of manufacture and filtration system)

Maytronics Original Replacement Parts for the EX 30 Dolphin

Filters: Clean after each cycle

Part Description When to replace
Spring Filters (Standard Basket) Filter basket for general debris: leaves, insects, grit. Comes standard with the robot. Clean after each cycle. Replace at the start of the season if there are signs of wear or if the mesh is torn.
Ultra-fine filters (15-micron panels) Optional filters with higher porosity to capture fine dust, dirt, pollen, and micro-particles. Recommended for pools with heavy use or a lot of fine debris. Replace when the robot loses suction even with a clean filter.

Brushes: Adhesion to the floor and walls

Replacement Description When to replace
Long PVC brush Standard brush for most surfaces: liner, painted concrete, polyester, and rough mosaic tile. Hard and durable. If the robot slips on the wall, replace the brush even if it shows little visible wear.
Wonder Brush Foam Brush Brush specifically designed for very smooth surfaces: vitreous mosaic, ceramic, and tiles. The foam creates a suction effect and improves grip. Choose between PVC and foam depending on the pool’s interior finish. See the brush guide below.
Combination Brush (PVC + Foam) A combination of PVC and foam rings. For mixed-surface pools or older mosaic tiles with an irregular texture. The most versatile option for pools with intermediate-type mosaic tiles.
Foam Ring for Combination Brush Replacement foam ring for combination brushes. Replace when the ring loses elasticity or breaks apart. Maintaining elasticity ensures a secure grip on pool walls.

Traction: tracks, belts, and bearings

Replacement Description When to replace
Drive belt / track (gray) Rubber part that transmits motion to the wheels. It stretches and wears out over time and due to contact with chemicals in the water. Always install in pairs (2 units). The robot skids, spins in circles, or fails to climb walls. Always replace both at the same time to maintain balanced traction.
Roller Bearing Adapter Bearing for the robot’s roller system. Replace if you hear unusual noise from the rollers or if the robot vibrates while moving forward.
Roller Pulley Bearing Pulley for the brush roller drive system. Check if the brush is losing rotational speed.
Lower Suction Rubber Strips (kit) Rubber strips that seal the robot’s lower suction area against the pool floor. They improve suction. Replace if the robot loses suction even though the filter is clean.

Electrical: power supply, cable, and connectors

Replacement Part Description When to replace
Basic Power Supply ON/OFF power switch for the robot. Low power consumption. Built-in carrying handle. Power cord not included. The main reason the robot won’t turn on after checking the cable. Replace if the robot doesn’t respond and the cable is in good condition.
Self-floating Cable Connection cable between the robot and the power supply. The cable floats in the water to prevent the robot from dragging it. Check for visible cuts or pinches. Do not bend or coil at sharp angles. Replace if it shows internal breaks (symptom: intermittent operation with no visible cause).
Power supply connector Female connector for connecting the cable to the robot. A common cause of intermittent operation or the robot failing to start.
Cable-to-motor connector kit Connector linking the cable to the robot’s internal electronics. For the two existing connector models, depending on the equipment generation.

Mechanical: turbine and valves

Replacement part Description When to replace
Black turbine impeller with screw Intake motor turbine. Trapped debris (hair, roots, fine particles) progressively reduces its efficiency. Clean the impellermonthly. Replace if there is cavitation noise or a permanent loss of suction.
Drain Valve Valve that allows the robot to drain when removed from the water. If it fails, the robot retains water and becomes excessively heavy. Replace if the robot does not drain properly when removed from the water.

Important note on availability: The EX 30 has different configurations depending on the generation, including variations in the filtration system (basket or cartridges), cable length, and some internal components. Before ordering any replacement parts, verify compatibility on the product page or contact our technical support team via the contact form by sending a photo of the unit and the serial number.

Brush Guide: How to Choose Based on Your Pool’s Finish

The most common mistake when replacing brushes is choosing the wrong type for the pool’s interior finish. The wrong brush causes the robot to slip on the walls or fail to climb onto the tile. Here’s a quick guide:

Pool interior finish Recommended brush Why
Liner / Reinforced sheet PVC PVC grips well on the liner without damaging the surface. A foam roller would be too soft for this material.
Painted concrete PVC The porous texture of painted concrete works well with hard PVC.
Rough or aged mosaic tile Combined (PVC + foam) The PVC + foam mixture smooths out the unevenness of the mosaic tiles and improves adhesion.
Glass mosaic / smooth ceramic Wonder Brush foam The foam creates an adhesive effect on very smooth surfaces where the PVC would slip.
Polyester Foam or combination Polyester surfaces are moderately smooth. Try the blended option first, and switch to foam if it continues to slip.

Preventive Maintenance: How to Extend the Life of the EX 30

Six basic rules to keep the robot in good condition for many years:

  • Clean the filter after each cycle: a clogged filter reduces suction and overloads the motor. Remove the robot from the water, open the lid, and rinse the filter under the faucet after each use
  • Inspect brushes and belts at the start of each season: if the rubber is worn or cracked, replace them before first use. Always replace belts in pairs
  • Clean the propeller monthly: hair, roots, fibers, and fine debris accumulate on the motor shaft and gradually reduce suction without being immediately noticeable
  • Do not leave the robot in the water between cycles: prolonged contact with chlorine (or a salt chlorinator, if applicable) degrades rubber and plastic much more quickly
  • Store the cable without forced kinks: internal breaks in the self-floating cable are the leading cause of malfunction without visible damage. Store it in a loose loop; never bend it at a sharp angle
  • At the end of the season: Clean the robot thoroughly, drain the water from inside, dry it, and store it in a dry place away from direct sunlight

Current Alternatives to the EX 30

If your EX 30 has multiple simultaneous malfunctions and you’d prefer to consider replacing it entirely with a newer model that has more readily available replacement parts, options are available in the catalog at Quimipool:

For the complete catalog by brand, check out the automatic pool cleaner hub.

Can’t find the replacement part for your Dolphin EX 30? Our technical team can identify the exact part based on the part number from the exploded view diagram at Maytronics or based on the issue you describe. Call us at 91 128 55 90 or contact us via the contact form, including a photo of the unit, the serial number, and the part to be replaced: Since there are variations by model generation in the filtration system and cable length, this is the fastest way to confirm the correct part number and avoid mistakes on your first purchase. See also pool cleaner replacement parts Dolphin, pool cleaners Dolphin, automatic pool cleaners, and robot pool cleaner replacement parts.