Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 371)

<6. Maintenance>
6-18
IM 11B08A01-01E
A1463EF
Locking Bracket
A1598EF (2 pieces or 4 pieces)
Figure 6.15
(4) Solenoid Valves
(1) Stop the operation and the supply of power.
(2) Turn off the purging air.
(3) When replacing a solenoid valve for the control unit, open the control unit door using a key
included in the accessory kit. Remove the two screws to remove the cover.
When replacing the solenoid valve for the electronics section for the oven unit, remove the
cover of the electronics section located to the right side of the oven unit by removing the six
screws using a hexagon wrench included in the accessory kit.
Disconnect the tube from the solenoid valve by pulling it while pressing the black part of the
connector.
(4) Disconnect the connector at the end of the cable of the solenoid valve from the terminal.
(5) Label the new solenoid valve with the number of the replacing solenoid valve. Place a
marking decal on the connector at the end of the cable.
(6) Remove the two screws on the front side of the solenoid valve and remove the solenoid
valve.
(7) Replace the solenoid valve and gasket with new ones.
(8) Confi rm that the two screws on the front side of the solenoid valve are securely fastened.
(9) Securely reconnect the connector at the end of the cable of the solenoid valve to its original
location.
Note
When connecting the connector to the terminal, check the polarity of red (+) and black (–) cables.
(10) Perform the reverse order of step (3).
2nd Edition : May 11, 2012-00