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

Ensure the following conditions are met

Fill a measuring beaker with dosing medium

Read off and note down the fill volume V1

Place the inlet line in the measuring beaker

Start the calibration process in the 'Setup > Calibration' menu

Record the factory calibration value displayed by the pump

Remove the inlet line from the measuring beaker

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

Check if the drain opening is blocked or soiled.

Check if liquid leaks from the dosing head or valves.

Tighten dosing head screws with a torque wrench to 6 Nm (+1 Nm) if necessary.

Tighten valves and cap nuts if necessary.

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

Dismantling the diaphragm and valves

Empty dosing head and flush if necessary

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

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

Ensure returning liquid is safely collected

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

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

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).