Before Operating The Ltq Series System; Checking The System Mode; Checking The Vacuum Pressure Levels; Figure 26. Vacuum Dialog Box - Thermo Scientific LTQ Series Hardware Manual

4
Daily Operation

Before Operating the LTQ Series System

Before Operating the LTQ Series System

Checking the System Mode

Checking the Vacuum Pressure Levels

46 LTQ Series Hardware Manual
Follow these preventive maintenance procedures every day before beginning the first analysis:
• Checking the System Mode
• Checking the Vacuum Pressure Levels
• Checking the Gas Supplies, on
• Checking the ESI Fused-Silica Sample Tube for
Make sure that the system is turned on. See
Before beginning your daily operation, check the vacuum pressure levels in the system and
check for major air leaks in the system. If there is a major air leak, the system does not pump
down to sufficient levels to turn on the system.
CAUTION For proper performance, operate the LTQ Series system at the proper vacuum
levels. Operating the system with poor vacuum levels can cause reduced sensitivity, tuning
problems, and reduced electron multiplier life.
 To check the vacuum pressure
1. In the Tune Plus window, choose Setup > Vacuum to open the Vacuum dialog box
(Figure 26).

Figure 26. Vacuum dialog box

2. Check the Ion Gauge Pressure readback.
This readback displays the current pressure in the analyzer region.
page 48
Elongation, on
"Turning On the Mass Spectrometer"
page 48
on page 36.
Thermo Scientific