Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 372)

<6. Maintenance>
6-19
IM 11B08A01-01E
K9630TU
Solenoid valve for the control unit electronics section
F0616.ai
Solenoid valve of the oven electronics section
Figure 6.16
(5) Pressure Switch for Carrier Gas
(1) Stop the operation and the supply of power.
(2) Stop the supply of carrier gas.
(3) Remove the cover of the electronics section located at the right side of the oven unit by
removing the six screws with a hexagon wrench included in the accessory kit (Take care not
to get the cover upside down).
(4) Disconnect the connector at the end of the cable for the pressure switch from the oven CPU
board.
(5) Remove the cover by removing the two screws of the pressure/fl ow control section.
(6) Pull the carrier gas line (1/16″ piping) off the pressure/fl ow control section side of the oven
unit.
Then, remove the nut on the electronics section side of the oven unit and remove the
pressure switch.
(7) Install a new pressure switch in the reverse order of step (6).
(8) Reconnect the connector at the end of the cable of the pressure switch to its original
location.
(9) Firmly tighten all the six screws for the cover of the electronics section of the oven unit to
maintain explosionproof condition.
(10) Close the over of the pressure/fl ow control section of the oven unit.
K9630LA
K9803VJ (for
ATEX)
2nd Edition : May 11, 2012-00
6