Grundfos Self-Priming Dosing Pump DDA 60-10 FCM-PVC/T/C-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

Warning: If the diaphragm is possibly damaged, don't connect the pump to the power supply!

Put on the stipulated personal protective equipment.

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

Take suitable steps to 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.

Check if symbol (-) is displayed.

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

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. Torque [Nm]

Tighten valves and cap nuts if necessary.

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

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

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