Atlantic MD550 Manuale del prodotto - Pagina 4

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• Repeating cycles of stopping and restarting will damage the water pump. Do not

continue operation at low water level or while the inlet is clogged with debris. Not only

will performance suffer, but also such conditions may cause noise, heavy vibration, and

pump failure.

• In case of excessive vibration, unusual noise or odor, turn off the power immediately and

consult your nearest dealer.

Maintenance and Inspection

• Regular maintenance and inspections are a necessity for continued efficient functioning. If

any abnormal conditions are noticed, refer to the section on Troubleshooting and take

corrective measures immediately.

Monthly Inspection / Cleaning

• Check for any drop in performance. Reduced performance is usually caused by debris

blocking the pump intake.

• Detach the power cable from the receptacle or turn off the power supply (circuit breaker).

• Disconnect the pump discharge and remove the pump from the water.

• Remove any accumulated debris from the surface of the pump and pre-filter.

• Unthread the pre-filter by turning it in a counter clockwise direction. Inspect the threaded

inlet on the volute and remove any accumulated debris.

• Remove volute by rotating it in a counterclockwise half turn while pulling lightly outward

from the pump body.

• Inspect the impeller and remove any debris that may be present.

• Spin the impeller. If the impeller is difficult to turn, feels "gritty", or a grinding noise is

evident in the rotor chamber, remove the rotor as per the instructions below.

Removing the Rotor

•

Remove the impeller assembly by pulling outward from the rotor chamber.

Note: The impeller assembly is comprised of six individual parts shown in the image on the

next page. Take care not to lose or misplace any of these pieces during the cleaning process.

• Inspect the magnetic rotor and the rotor chamber for built up debris. Loose debris can be

flushed out with clean water. Often in hard water, well water or pond-free applications,

debris may appear as a crusty film around the rotor and in the rotor chamber. Remove

this film using a scrub brush and white vinegar.

• Inspect the intake O-ring for nicks or breaks.

• Re-assemble the impeller and insert it into the rotor chamber. Hold on to the impeller

tightly. The impeller assembly is magnetized and without resistance, can be drawn

forcefully into the rotor chamber, damaging the ceramic shaft

• Attach the volute by applying pressure and rotating it in a clockwise half turn.

• Replace the pre-filter.