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

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

Dismantle suction, pressure and deaeration hose

Dismantle valves on suction and discharge side

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 (See fig. 14)

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.

Dismantling the Deaeration Valve

Manually unscrew deaeration screw (1).

Ensure the following conditions are met

Fill a measuring beaker with dosing medium

Enter the fill volume V1 (e.g. 2.5 l)

Place the inlet line in the measuring beaker

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

Verify the pump executes 200 dosing strokes and displays the factory calibration value

Remove the inlet line from the measuring beaker

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.

Verify the following conditions