Grundfos Self-Priming Dosing Pump DDA 60-10 FCM-SS/T/C-F-32A1A1FG

Is there any liquid leaking from the drain opening on the dosing head?

Is the drain opening blocked or soiled?

Dosing Head and Valves Inspection

Is there any liquid leaking from the dosing head or valves?

Tighten dosing head screws with a torque wrench if necessary

Are the valves and cap nuts tightened properly?

Is there a service requirement present at the pump display?

Ensure maintenance is performed by qualified personnel

Verify authorization to open pump housing

Inspection of Diaphragms and Valves

Inspect diaphragms for signs of wear

Inspect valves for signs of wear

Were any diaphragms found to be worn?

Put on the stipulated personal protective equipment.

Is the diaphragm possibly damaged?

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.

Ensure all electrical connections are carried out by a qualified electrician

Disconnect the pump from the power supply

Replace mains cable (13) and gasket (13b)

Screw in safety screw (13a) with a torque wrench

Ensure the pump is correctly installed and ready to start before switching on the power supply

Verify that plugs or protective caps are correctly installed to maintain enclosure class (IP65 / Nema 4X)

Avoid manipulating mains plug or cable

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).