Chapter 7 Troubleshooting
GC-2014 Service Manual
103
Check the offset and gain values.
The offset value is normally in the range 32,000 to 33,500 and the gain
value is normally in the range 3,000 to 6,000. If the offset value is well
outside this range, perform offset calibration. (The method is described in
the GC-2014 instruction manual.) If the gain value is well outside this range,
obtain the correct value from Shimadzu Corporation's Quality Assurance
Department. At this time, provide notification of the serial number and lot
number displayed on the side of the AFC.
Check that the status is not "Flow off" or "System off".
If 0 is displayed as the valve voltage, this indicates that there is no voltage
being supplied from the control system to the valve (TFC, Total Flow
Controller) that is attempting to supply carrier gas to INJ.
(3) The pressure or the linear velocity is higher than the setting.
Check that P-mode I time = 10, P-mode P term = 50, and P-mode I term =
100.
If the values are different from the above values, input these values and
press the pf4 key to write them in the ROM. If the AFC for WBI is used, the
above values are as follows: P-mode I time = 10, P-mode P term = 12, and
P-mode I term = 10.
Check the offset and gain values.
The offset value is normally in the range 32,000 to 33,500 and the gain
value is normally in the range 3,000 to 6,000. If the offset value is well
outside this range, perform offset calibration. (The method is described in
the GC-2014 instruction manual.) If the gain value is well outside this range,
obtain the correct value from Shimadzu Corporation's Quality Assurance
Department. At this time, provide notification of the serial number and lot
number displayed on the side of the AFC.
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