6 Agilent 7890 Series Troubleshooting
The Measured Column Flow Does Not Equal the Displayed Flow 100
FID Does Not Ignite 101
FID Ignitor Does Not Glow During Injection Sequence 102
FID or NPD Measured Hydrogen and Makeup Gas Flows Much Less Than
Setpoint 104
NPD Adjust Offset Process Fails 105
FPD Does Not Ignite 106
Valve Not Ready 108
External valves 108
Gas sampling valves 108
Multiposition valve 108
Blinking Not Ready Light: Detector Hardware Fault/TCD Filament
Voltage 109
5 Shutdown Symptoms
Column Shutdowns 112
Hydrogen Shutdowns 114
Hydrogen used in inlets and auxiliary gas streams 114
Hydrogen sensor 115
Detector Air Shutdowns 116
7890B MS Shutdown 117
Clearing an MS Shutdown 118
After resolving an MS Shutdown 118
Thermal Shutdowns 119
6 GC Power On and Communication Symptoms
GC Does Not Turn On 122
PC Cannot Communicate with GC 123
GC Cannot Communicate with a Configured MS or HS 124
GC Does Not Recover After Firmware Update 125
GC Turns On, Then Stops During Startup (During Self-Test) 126
To Next Page
Loading...
Need help?
General
