7 General Maintenance
To Disassemble the EI HES
7000/7010 Series TQ GC/MS Operating Manual 165
To Disassemble the EI HES
Materials needed
• Gloves, clean, lint-free (Large 8650-0030) (Small 8650-0029)
• Cloths, clean (05980-60051)
• T6 Torx driver, (8710-2548)
• Tweezers (8710-2460)
Procedure
Refer to the exploded parts view and the EI HES parts list while using this
procedure. (See Figure 52 on page 166 and Table 15 on page 166.)
1 Place a clean cloth on your work surface to hold the ion source parts.
2 Use a T6 Torx screwdriver to remove the screw securing the filament block
to the source mount and using the finger grip, remove the filament block.
3 Remove the dual filament from the filament block by lifting the source body
up off of the filament block, while holding the filament block so that the dual
filament will not fall and become damaged.
4 Remove the finger grip from the filament block.
5 Use a T6 Torx screwdriver to remove the two screws securing the source
mount to the source body.
6 Use the finger grip to remove the source mount from the lens body.
7 Remove the repeller and ring heater sensor assembly from the source body.
8 Separate the repeller from the ring heater assembly.
9 Use a T6 Torx screwdriver to remove the screw and locking ring for the lens
insulator that secures the lens stack in the source body, then remove the lens
stack.
10 If necessary, use gravity to remove the lens stack ceramic insulator from the
source body.
Use care when removing the filament from the filament block. Putting
excessive stress on this can break or crack it. If this happens, do not attempt to
operate with a defective filament, it must be replaced.
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