Valmar Sweety Quick 60 Operating And Maintenance Manual page 35

Unscrew the locknut. Push the handle as far as possible and turn it clockwise. Use
both hands.
Pull out the piston from the outlet pipe.
HOUSING
Loosen the valve locknut (clockwise) and detach the outlet pipe assembly using
both hands.
VALVE LOCKNUT
take off and inspect he piston seal, the locknut washer and the valve
washer: if the washer or seal is cracked, worn or has lost elasticity, it must
be replaced with a new one;
the mixer, blockader, both sliders, all parts of the outlet valve, all washers
and seals must be cleaned in warm water and left to dry.
It is strictly forbidden to put plastic parts of the appliance into the dishwasher to
clean them!
35
LOCKNUT
PISTON