Ogawa OG8020 Maintenance Service Manual page 39

Locate the ten screws that secure the
cover.
F: Remove the air hose which connected to air valve. Disconnect the wire connecter from the
PCB. Then remove the four screws which fixing the air valve. Now the air valve can be
removed. (As pictured below)
G: Disconnect all the wire connecters. Remove the screws which fixing the PCB. Then the PCB
can be taken off.
Cover has been removed.
Locate the screws which secure the
air valve.
Connecters have
disconnected.
Air valve has been detached.
been Air pump PCB has been
detached.