Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 378)

<6. Maintenance>
6-25
IM 11B08A01-01E
(6) Remove the two screws on the mounting bracket which fi x the manifold regulator.
(7) Remove the two screws on the backside of the mounting bracket which fi x the manifold
valve to the mounting bracket.
(8) Install a new regulator in the reverse order of steps (5) to (7).
When reinstalling the conversion coupling, always use a sealing tape.
(9) After confi rming that the pipe connections are correct, check the piping for leaks.
(10) Set the pressures of the purging air and the solenoid-valve air to the values indicated in the
operation data. Adjust and set the pressure by unlocking the knob and then rotating it. The
knob locks when it is pressed in, and unlocks when it is pulled out.
(11) Install the cover which has been removed in step (4).
<Replacement Parts>
K9801JP 3-valves
K9801JQ 4-valves
K9801JR 5-valves
Mounting bracket
Mountung Bracket
Knob
Tube
F0621.ai
Figure 6.21 Regulator for Purge Air and Solenoid-Valve Air
(4) Vortex Tube (for FPD)
See Figure 6.24.
(1) Stop the operation. (See “3.3.4 Stopping operation” for this procedure).
(2) Stop the supply of power.
CAUTION
The isothermal oven is extremely hot after turning off the power immediately. Keep the purging
air supplied for more than an hour after turning off the power. Keep hands away from the oven
components.
(3) Turn off the supply of the purging air.
(4) Remove the cover by removing the two screws of the pressure/fl ow control section.
(5) Pull out the two tubes connected to the vortex tube assembly.
(6) If a regulator is attached to the mounting bracket of a vortex tube, remove the two tubes
connected to the regulator.
(7) Remove the two screws from the mounting bracket.
(8) Remove the two screws which fi x the vortex tube to the mounting bracket.
2nd Edition : May 11, 2012-00
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