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Maintenance
3. Wear part replacement
For a long period of operation wear parts need to be
replaced periodically.
CAUTION
● Turn off power before work
Risk of electrical shock. Be sure to turn off power to
stop the pump and related devices before work.
● Do not touch the pump or pipe with bare bands
Risk of burning. The surface temperature
of the pump or pipe gets high in or right
after operation.
●
Wear protective clothing
Always wear protective clothing such as a
mask so as not to take in toxic fume during
pipework or dismantlement.
See page 6 "
8. Part names & Structure"
as necessary.
■ Diaphragm replacement
1. Unscrew the pump head fix-
ing screws and take out the
pump head, valves, gaskets
and valve seat.
2. Turn the diaphragm anti-
clockwise so as to detach it
from the rod.
3. Mount a new diaphragm into
the rod and fasten as far as
it will rotate.
4. Push down the diaphragm
until it bottoms out and then
reassemble and secure the
above parts onto the bracket
with the screws by 1.37N•m.
Screw
Pump head
Gasket
Bracket
Con rod
Valve
Valve seat
Plate washer
Diaphragm
