ISQ User Guide - Write Frame of Mind

Checking the Vacuum and Temperature
2 Confirming Your GC/MS System is Working
Checking the Vacuum and Temperature
Use the lights on the front of the ISQ to check the vacuum and temperature of the
instrument.
To check the vacuum, look at the Vacuum light. When the light is a solid green, the ISQ is
under sufficient vacuum. If it is slowly blinking orange, you have not achieved vacuum yet. If
it is blinking orange quickly, you have a large leak that prevented the instrument from
achieving vacuum. If this is the case, you need to find and fix the leak, then turn the power off
and on. Most likely, the column nut needs to be tightened, the column was not installed
correctly, or the vent valve was not completely closed.
Figure 7. Using the Lights on the ISQ
Vacuum
Heaters
To check the temperature, look at the Heaters light. When the Heaters light is a solid green,
the ISQ is at temperature. If it is blinking orange, the ion source and/or transfer line are not at
temperature. If the light is not lit, the heaters are not turned on.
Note Until the Vacuum light is a solid green (high vacuum is achieved), the heaters will
not power on and the Heaters light will not be lit.
Thermo Scientific ISQ User Guide 15