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

Ensure maintenance is performed by qualified personnel

Verify authorization to open pump housing

Inspection of Diaphragms and Valves

Check for signs of wear on the following parts

Are there any worn parts that need replacement?

Replace worn parts with original spare parts made from suitable materials

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

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 to 6 (+1) Nm if necessary.

Are the valves and cap nuts tightened properly?

Is there a service requirement present at the pump display?

Put on the stipulated personal protective equipment.

Take suitable steps to ensure that the returning liquid is safely collected.

Dismantling the Deaeration Valve

Empty dosing head and flush it if necessary.

Manually unscrew deaeration screw (1).

Put on the stipulated personal protective equipment

Take suitable steps to ensure that the returning liquid is safely collected

Empty dosing head and flush it if necessary

Disconnect DLD signal connection

Carefully unscrew DLD sensor (9) with an open-end spanner that fits accurately

Carefully screw in the new sensor into the dosing head with an open-end spanner that fits accurately