Agilent Technologies 5975 Series Operating Manual page 105

4 Operating in EI Mode
.
Vent valve knob
Figure 30.
If you are using hydrogen as a carrier gas, the carrier gas flow must be off
WAR N IN G
before turning off the MSD power. If the foreline pump is off, hydrogen will
accumulate in the MSD and an explosion may occur. Read
Safety"
Be sure the GC oven and the GC/MSD interface are cool before turning off
C AU T I O N
carrier gas flow to prevent damage to the column.
5975/5977 Series MSD Operating Manual
Vent valve knob
on page 19 before operating the MSD with hydrogen carrier gas.
"Hydrogen
105