Fig. 23: Disassembling The Filament Unit Of The Open Ion Source; Fig. 24: Installing The Filament Unit Of The Open Ion Source - Pfeiffer Vacuum PrismaPro QMG 250 Translation Of The Original

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Fig. 23: Disassembling the filament unit of the open ion source
1 Nut (3×)
(M1.6, hexagon, stainless steel, gold-plated)
2 Lock washer (3×)
3 Brace (3×)
4 Screw (3×)
(M1.6×4, flat head)
Disassembling the filament unit
1. Place the analyzer in the mounting aid.
2. Remove the nuts and lock washers from the braces.
3. Hold the clamps with the flat pliers.
4. Loosen the screws of the clamps without unscrewing the screws too far.
– The rear clamp will fall off if the screws are unscrewed too far.
5. Carefully pull the filament connections away from the filament unit.
6. Carefully pull the filament unit away from the ion source.
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Fig. 24: Installing the filament unit of the open ion source
1 Filament unit
2 Counterbore
3 Nut (3×)
(M1.6, hexagon, stainless steel, gold-plated)
4 Lock washer (3×)
5 Brace (3×)
Installing the filament unit
1. Place the analyzer in the mounting aid.
2. Carefully remove the filament unit from the transport lock.
3. Fit the new filament unit onto the spacers so that the anode of the filament unit is aligned with the
counterbore.
4. Secure the filament unit to the spacers with new nuts and lock washers.
5. Tighten the nuts.
– Tightening torque: 0.15 Nm
6. Insert the filament connections into the clamps.
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5 Clamp (3×)
(M1.6, for filament)
6 Filament unit
7 Spring washer
8 Fixing screw
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6 Screw (3×)
(M1.6×4, flat head)
7 Clamp (3×)
(M1.6, for filament)
8 Spring washer
9 Fixing screw
Maintenance
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