LTQ Orbitrap XL Hardware Manual

Shutting Down the System
Basic System Operations
Shutting Down the System
The LTQ Orbitrap XL system does not need to be shut down
completely if you are not going to use it for a short period of time, such
as overnight or over a weekend. Refer to the topic “Placing the System in
Standby Condition” on page 2-4. This section describes how to shut
down the system for a maintenance or service procedure.
Use the following procedure to shut down the LTQ Orbitrap XL
system:
1. Wait until data acquisition, if any, is complete.
2. Turn off the flow of sample solution from the LC (or other sample
introduction device).
Note For instructions on how to operate the LC from the front panel,
refer to the manual that came with the LC. ▲
3. From the Tune Plus window, choose Control > Off to put the
instrument in Off condition. When you choose Control > Off, all
high voltages are shut off, as are the sheath and auxiliary gas.
4. Put the FT Electronics switch to the OFF position. See Figure 1-7
on page 1-9.
5. Put the Vacuum Pumps switch to the OFF position. See Figure 1-7.
When you place the switch in the OFF position, the following
occurs:
a. All power to the instrument, including the turbomolecular
pumps and the rotary-vane pumps, is turned off.
b. After 30 s, power to the vent valve solenoid of the ion trap is
shut off. The vent valve opens and the vacuum manifold is
vented with nitrogen to atmospheric pressure through a filter.
You can hear a hissing sound as the gas passes through the filter.
6. Leave the main power switch of the LTQ Orbitrap XL in the On
position.
7. During service or maintenance operations that require opening the
vacuum system of the LTQ XL or LTQ Orbitrap XL, always put the
main switch (main circuit breaker) to the OFF position. You can
Thermo Fisher Scientific LTQ Orbitrap XL Hardware Manual 2-5