73
Ma
in
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e
Wear part replacement
Pull out the valve set by a pair of tweezers.
Screw the
fi
tting into the pump head with
the valve set in it and turn it anticlockwise
about 90 degrees by an adjustable wrench or
a spanner.
* Be careful not to misarrange the valve set or mis-
place upside down. Otherwise, leakage or
fl
ow rate
reduction may result.
* Do not forget to
fi
t O rings and gaskets.
* Keep the valve set free from dust or foreign mat-
ters.
Reconnect the suction tube.
Diaphragm replacement
Necessary tools
• Adjustable wrench or spanner
• Hexagon wrench
• Torque wrench
NOTE
Pay attention not to lose diaphragm spacers. Always apply a proper number of dia-
phragm spacers. 0 or a few diaphragm spacers are inserted between the retainer and
plunger for the adjustment of diaphragm location. Note that the number of diaphragm
spacers varies with pump model. Some pumps may use no spacer.
Valve set
Fitting
*VC•VH•PC•PH
4
5
3
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