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Wear part replacement
Take out valve sets from the pump head and take them
apart to replace worn parts as necessary.
Clean the pump head as necessary.
Reassemble and remount the valve sets in the pump head.
Observe the mounting order and direction of valve set components. See the exploded view at each
model.
NOTE
• Observe the mounting direction of the valve set.
• The valve seat must be held in the valve guide by
the seat holder when assembling an IX-D150/-
D300 TC/TE valve set. Do not push the valve
seat down into the valve guide. Otherwise, a leak
may result.
Connect pipes and the pump.
Diaphragm replacement
Necessary tools
• 3mm hexagon wrench
• Spanner (13mm)
• Torque wrench
Remove pipes from the pump.
NOTE
• The valve set may come down as the suction pipe is removed.
Take care not to drop it.
• Be careful not to get wet with residual chemicals in the pump
head or the discharge pipe.
1
3
4
2
Valve
guide
Seat
holder
Valve
seat
Valve
O ring
Do not push
the valve seat.
Valve set