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

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 the symbol (-) is displayed.

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

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.

Install flange and new O-ring with screws observing alignment pin.

Cross-tighten screws with a torque wrench to 6 (+1) Nm.

Attach intermediate ring to flange observing alignment pin.

Ensure all personal protective equipment is worn

Ensure returning liquid is safely collected

Is it necessary to flush the dosing head?

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).