Checking The Vacuum Pressure; Figure 16. Ion Trap Page - Thermo Scientific ETD Getting Started Manual

For the ltq xl and ltq velos ms detectors (compatible with ltq orbitrap xl and ltq orbitrap velos)

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Daily Operation

Before Operating the LTQ XL/ETD or LTQ Velos/ETD System

Checking the Vacuum Pressure

MS/ETD System Getting Started Guide

Note

When on, the System LED on the front panel of the MS detector turns green and the

high voltage to the electron multipliers turns on.

The following conditions can cause the MS/ETD System to remain in standby mode

even though you try to turn it on:

• Attempting to turn on the reagent ion source when the restrictor heater, source

heater, and transfer line heater are not at their target temperatures.

• When either the LTQ XL/ETD or LTQ Velos/ETD MS detector or the

MS/ETD System goes into standby mode. Reagent vial nitrogen cooling turns on

if the vials are at an elevated temperature.

• Exception: If you put the LTQ XL/ETD or LTQ Velos/ETD system in standby

mode, the cooling nitrogen turns on after a one hour delay.

• Whenever the pressure in the LTQ XL or LTQ Velos MS detector or the

MS/ETD System exceeds its protection limit. Reagent vial nitrogen cooling turns

on if the vials are at an elevated temperature.

• Whenever the flow of reagent ions becomes insufficient as determined by the

AGC setting. When this occurs the LTQ XL/ETD or LTQ Velos/ETD system

completes the Xcalibur sequence step in progress before going into standby mode.

This prevents the loss of analysis results that might be affected by the reduced

reagent ion flow.

Check the vacuum pressure before operating the system.



To check the vacuum pressure

1. In the Tune Plus window, choose Setup > Vacuum

(Figure

16).

Thermo Scientific

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