Replacing the 5977/7010 HES Ion Source Filaments

Answer

This Information Applies To: HES ion source in 5977B/C GC/MSD, 7010 triple quadrupole GC/MS systems

Issue

The filaments are replaced as part of routine maintenance, or when they break (zero output current).

Items Required

• Gloves, nylon, lint-free, clean (p/n large 8650–0030, medium G8135-80210, small 8650–0029)
• Cloth, 100% cotton, lint-free, clean (p/n 05980–60051)
• T6 Torx driver (p/n 8710–2548)
• Filament assembly, high efficiency dual filament (p/n G7002-60001)
• Ion source stand, supplied with instrument.

Steps to follow

 Use Figure 1 as reference to identify the HES source parts in this procedure.

Figure 1. HES ion source parts
1. Filament block securing screw, 2. Ion source mount, 3. Finger grip on the filament block assembly, 4. Dual filament

Removing the old filament

1. Vent the MS, see How To Vent (Shut Down) the GC/MSD - EI - MassHunter

   Warning: The analyzer, GC/MS interface, and other components in the analyzer chamber operate at high temperatures. Do not touch any part until you are sure it is cool.

2. Open the analyzer chamber, remove the ion source, and place it in the ion source stand on a clean cloth

   Caution: To prevent contamination when working in the analyzer chamber always wear clean, lint free gloves.

3. Remove the screw securing the filament block to the source mount (Figure 2)

   
   
   Figure 2. Removing the securing screw

4. Hold the finger grip on the filament block, invert the ion source, and lift the source body off the filament block, and remove the filament block from the source.

   Caution: Dual filaments are brittle. Handle with extreme care.

5. Remove the dual filament from the filament block (see Figure 3)

   
   
   Figure 3. Removing the dual filament
   
   

Installing the new filament

Caution: Caution: Dual filaments are brittle. Handle with extreme care.

1. Insert the three pins on the dual filament through the rear of the filament block (see Figure 4)

   
   
   Figure 4. Installing the dual filament
   

2. Holding the ion source upside down, place the filament block in the source mount (see Figure 5)

   
   
   Figure 5. Installing filament block
   

3. Place the source in the ion source stand

4. Use a T6 Torx screwdriver to tighten the screw securing the filament block to the source mount (Figure 6)

   
   
   Figure 6. Tightening the securing screw
   

5. Reinstall the ion source

6. Close the analyzer chamber and pump down the MS. See How To Pump Down (Start) the GC/MSD - EI - MassHunter

7. The MS will need an autotune before running samples. 

Learn how to effectively maintain your Agilent GC/MS systems: Agilent 5977 GC/MSD with MassHunter Workstation Agilent 5977 GC/MSD with OpenLab CDS e-learning paths available from Agilent education