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Maintenance
■
Valve & Gasket replace-
ment
1. Unscrew the pump head
fixing screws and dismantle
the pump head unit.
2. Replace old valves and gas-
kets with new ones and then
reassemble the pump head
unit.
3. Supply air into the pump
head unit through the inlet
and check the air is dis-
charged through the outlet.
4. Push down the diaphragm
until it bottoms out and then
secure the unit onto the
bracket with the screws by
1.37N•m.
IN
OUT
Pump head
Gasket
Valve
Valve seat
NOTE1. For the APN-P085 twin parallel type, finish either
pump head first and then start with the other.
NOTE2. Do not loosen the motor-bracket fixing screws during
maintenance work.
NOTE3. Contact your nearest distributor for the replacement of
the connecting rod and the motor.
