Troubleshooting
6850
6850
Released: April 2004 6850 Series Gas Chromatograph Service Procedures 304
3. The gas supply pressures should be as docu-
mented the 6850 Site Prep/Installation Man-
ual:
• This requires gas supply delivery pres-
sures to be set according to the 6850
Site Prep Manual:
Carrier/Makeup: 80 to 100 psi (150 psi
for high pressure inlet)
Air: 80 psi minimum
H
2
: 60 psi minimum
• Gas purities are 99.9995% or better (per
6850 Site Prep Manual)
• Confirm that the FID igniter is glowing
while the FID is trying to ignite. If not
check the igniter electrical connection
and confirm that the igniter body is
screwed tightly into the FID castle
assembly. If the igniter coil is open cir-
cuit or contaminated with corrosive
material it must be replaced.
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