Grundfos Self-Priming Dosing Pump DDA 60-10 FCM-PV-L/V/SS-F-32A1A1FG

Ensure only qualified personnel perform the maintenance

Verify authorization to open pump housing

Inspection of Diaphragms and Valves

Check for signs of wear on the following parts

Are there any signs of wear on the diaphragms or valves?

Replace worn parts with original spare parts?

Dismantling the diaphragm and valves

Empty dosing head before maintenance and flush if necessary

Set pump to 'Stop' operating state using the [Start/stop] key

Press the [Start/stop] and [100%] keys to put the diaphragm into 'out' position

Ensure returning liquid is safely collected

Loosen screws (8) on the dosing head (7) and remove with discs

Ensure no dosing liquid has entered the pump housing.

Place new O-rings in the grooves at flange and ensure correct seating.

Attach flange observing alignment pin (12).

Install flange and new O-ring with screws observing alignment pin (12).

Cross-tighten screws with a torque wrench to 6 (+1) Nm.

Attach intermediate ring to flange observing alignment pin (12).

Put on the stipulated personal protective equipment.

Set pump to 'Stop' operating state using the [Start/stop] key.

Ensure that the returning liquid is safely collected.

Empty dosing head and flush it if necessary.

Press the [Start/stop] and [100%] keys at the same time to put the diaphragm into 'out' position.

Acknowledge 'Stop after power failure' alarm if active by opening the 'Alarm' main menu.

Check if liquid leaks from the drain opening on the dosing head.

Check if the drain opening is blocked or soiled.

Dosing Head and Valves Inspection

Check if liquid leaks from the dosing head or valves.

Tighten dosing head screws with a torque wrench if necessary.

Tighten valves and cap nuts if necessary.

Check if a service requirement is present at the pump display.