KNF Diaphragm Laboratory Pump NF300TT.18RC

Place the pump in a suitable collecting vessel

Check the discharge outlet regularly for leaks

Ensure the discharge outlet is never closed

If medium escapes from the pump's discharge outlet, stop using the pump and contact your KNF dealer

If the pump diaphragm ruptures, the transferred medium is channelled out of the pump through the discharge outlet

Check tightening torque of head screws

Is the pump in perfect working order?

Is the pump operated in accordance with the technical data?

Check the discharge outlet for leaks

9.4 Cleaning / Replacing Valve Plates and Pump Diaphragm

Ensure cleanliness during maintenance

Check that pump and system are leak-tight after maintenance

Requirements before maintenance

Ensure pump is free of crystallising, adhesive or curing media

Flush pump with neutralising liquid for 10 minutes

Flush pump with distilled water for 5 minutes

Flush pump with neutralising liquid for 10 minutes

Flush pump with distilled water for 5 minutes

Replace pump diaphragm if necessary

Operate the pump in a collecting pan

Flush pump thoroughly after use or if not used for an extended period

Check the discharge outlet regularly for leaks

Observe the service life of the diaphragm and other elastomer parts

Diaphragm Replacement Procedure

Refer to Section 9.4 for Pump Head Cleaning and Valve Plate Replacement