This is the genuine Maytronics black impeller supplied complete with its dedicated DC fixing screw, sourced directly for the Dolphin Ex 45 CB robotic pool cleaner. The impeller is the hydraulic heart of the pump unit: it draws water up through the robot and forces it through the filter cartridge or bag, carrying debris with it. Without a correctly functioning impeller, suction collapses and cleaning performance fails entirely.<\/p>\n
Mounted directly onto the pump motor shaft inside the motor unit, the impeller generates the continuous water flow that underpins every cleaning cycle. Its rotating blades create negative pressure at the inlet port, pulling pool water \u2014 along with suspended debris, algae, and fine particles \u2014 up into the filtration chamber. The included DC screw locks the impeller axially to the motor shaft, preventing slip under load and ensuring consistent flow rate throughout the cycle.<\/p>\n
This part is specified as the correct impeller assembly for the Maytronics Dolphin Ex 45 CB. Maytronics produces two distinct impeller variants \u2014 black and yellow \u2014 and they are not interchangeable between model families. Always verify colour and part number before ordering, as fitting the wrong impeller will prevent the robot from operating correctly when submerged.<\/p>\n
The most common cause of impeller failure is ingestion of hard debris \u2014 a small stone, twig fragment, or piece of tile grout \u2014 that chips or cracks one or more blades. Visible symptoms include a marked reduction in suction, the robot failing to pick up debris it would normally collect, audible rattling or vibration from the motor unit while running, or the cleaner not activating at all once submerged. Inspect the impeller whenever suction loss cannot be explained by a blocked filter.<\/p>\n
Aftermarket impellers may appear visually identical but are frequently moulded to looser tolerances, which reduces hydraulic efficiency and can accelerate wear on the motor shaft. Genuine Maytronics parts are manufactured to the exact specifications of the original component, ensuring correct blade geometry, secure screw engagement, and full compatibility with the motor unit in the Dolphin Ex 45 CB. Using a genuine part also preserves any remaining warranty coverage on the robot.<\/p>","protected":false},"excerpt":{"rendered":"