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

Ensure maintenance is carried out 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

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.

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) on dosing head and remove 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

Dismantling the Deaeration Valve

Manually unscrew deaeration screw (1) without using any tools

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