Agilent Technologies 7000 Triple Quadrupole GC/MS, Maintenance Manual

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86 Troubleshooting and Maintenance Manual
4
General Maintenance
To separate/connect the MS and the GC
Materials needed
•
Wrench, open-end, 1/4-inch × 5/16-inch (8710-0510)
Separation
1 Vent the MS. See the Agilent 7000 Series Triple Quad GC/MS Operation
Manual .
2 Turn off the GC.
3 Remove the capillary column from the GC/MS interface.
4 The foreline pump may be located on the floor, on the lab bench next to or
behind the MS, or under the analyzer chamber at the back of the MS. Move
it as needed to provide slack in the tubing and cables.
5 Move the MS away from the GC until you have access to the GC/MS
interface cable (
Figure 6 ).
WA R N I N G
Make sure the GC/MS interface and the analyzer zones are cool (below 100 °C)
before you vent the MS. A temperature of 100 °C is hot enough to burn skin; always
wear cloth gloves when handling analyzer parts.
WA R N I N G
If you are using hydrogen as a carrier gas, the carrier gas flow must be off before
turning off the MS power. If the foreline pump is off, hydrogen will accumulate in the
MS and an explosion may occur. Read
“Hydrogen Safety” before operating the MS
with hydrogen carrier gas.
C A U T I O N
Be sure the GC oven and the GC/MS interface are cool before turning off carrier gas
flow.
WA R N I N G
Make sure the GC/MS interface and GC oven have cooled before you remove the
column.