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4
General Maintenance
To Separate the GC from the MS
This procedure is used for relocating or storing the instrument.This procedure
applies to Agilent 8890 and 7890 GCs.
Materials needed
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•
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Ensure the GC/MS interface and the analyzer zones are cool (below 100 °C)
WAR N IN G
before you vent the MS. A temperature of 100 °C is hot enough to burn skin;
always wear cloth gloves when handling analyzer parts.
The use of hydrogen gas is specifically prohibited with this product.
WAR N IN G
Ensure the GC oven and the GC/MS interface are cool before turning off carrier
C AU T I O N
gas flow.
Ensure the GC/MS interface, GC inlet, and GC oven have cooled before you
WAR N IN G
remove the column. These areas can be hot enough to burn skin.
Procedure
1 Cool down the GC/MS interface, GC inlet, and GC oven.
2 Before separating the GC from the MS, ensure that the capillary column in the
3 The foreline pump may be located on the floor, on the lab bench next to or
4 Carefully pull the GC away from the MS until you have access to the GC/MS
76
Ferrule, blank (5181-3308)
Self-tightening column nut (recommended, 5190-5233), or interface column
nut (05988-20066)
Wrench, open-end, 1/4-inch × 5/16-inch (8710-0510)
GC oven is either disconnected from the transfer line, or has enough slack
uncoiled from the column hanger. Transportation of either instrument
requires a disconnection of the capillary column.
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.
interface cable. (See
Figure
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
9, "Separating/connecting the MS and GC," on
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Troubleshooting
