582156110-EN-indC-Pump-20F50 pH.docx 20/11/2020
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Unscrew the suction valve (50) with a 41 mm wrench.
Remove the gasket (42) with a flat screwdriver.
Remove the locking ring (40) with a flat screwdriver.
Remove the ball (39).
Clean the parts, change the gasket (42) and
reassemble the ball (39) and the retaining ring (40).
Tools needed