Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 426)

<7. Troubleshooting>
7-13
IM 11B08A01-01E
(2) FID
Troubleshooting diagram for malfunctioning chromatogram is shown as followings.
F0305.ai
Malfunctioning chromatogram
Flow rate
of combustion gas is as
specified
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
No
Yes
Yes
No
Turn detector
DET FLAME OUT
is occured
Status of
detector is ON
Adjust flow rate of
combustion gas
Flow rate
of combustion gas is as
specified
Yes
No High voltage
value for signal at DET card is
as specified
Yes
No High voltage
value for signal at DET is
as specified
Adjust flow rate of
combustion gas
Replace detector card
Replace wiring for detector
Voltage value
for ignition at DET board is
as specified
Replace detector board
Yes
No Voltage
value for ignition at DET is
as specified
Replace wiring for detector
Replace detector
Baseline of
detector is malfunctioning
Column system failure or
sampling system failure
Temperature of oven is
stable
Wait for stabilization of
oven temperature
Combustion air is clean Use clean combustion air
External pipng is clean Ude clean piping
No
Replace detector
Instalation
resistance of detector is
good
Replace wiring for detector Wiring for detector is
good
Replace detector board
Figure 7.5 Troubleshooting Diagram for Malfunctioning Chromatogram (FID)
2nd Edition : May 11, 2012-00
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