General Maintenance 4
5977B Series MSD Troubleshooting and Maintenance Manual 99
To Separate the MSD from the 9000 GC
Materials needed
• Screwdriver, T-20 Torx (8710-1615)
Procedure
Separate the MSD and 9000 GC
1 Remove the 9000 GC/MSD Tail. Refer to the Agilent 5977B Series MSD
Operating Manual.
2 Power off the GC.
3 Using a T-20 Torx screwdriver, loosen the lock plate by turning the lock
plate screw clockwise.
Ensure the GC/MSD interface and the analyzer zones are cool (below 100 °C) before
you vent the MSD. A temperature of 100 °C is hot enough to burn skin; always wear
cloth gloves when handling analyzer parts.
If you are using hydrogen as a carrier gas, the carrier gas flow must be closed
before turning off the MSD power. If the foreline pump is off, hydrogen will
accumulate in the MSD and an explosion may occur. Before operating the MSD with
hydrogen carrier gas read the hydrogen safety information. (See “Hydrogen Safety”
on page 22.)
Ensure the GC heated zones and the GC/MSD interface are cool before turning off
carrier gas flow.
Ensure the GC/MSD interface and GC heated zones have cooled before you remove
the 9000 GC/MSD Tail.
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