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NOTICE
Impairment from contamination and damage
Touching the devices or components with bare hands increases the desorption rate and leads to in-
correct measurements. Dirt (e.g. dust, fingerprints, etc.) and damage impair the function.
► During assembly and maintenance work on high or ultra high vacuum systems, always wear
clean, lint-free and powder-free laboratory gloves.
► Only use clean tools.
► Make sure that the connection flanges are free of grease.
► Remove protective caps and protective covers from flanges and connections only when necessa-
ry.
► Remove the analyzer’s transport protection only when necessary.
► Carry out all work in a well lit area.
Visual inspection before replacing the filament unit
Inspect and assess the complete ion source before replacing the filament unit. Pfeiffer Vac-
uum recommends replacing the complete ion source in the event of damage, significant de-
posits or soiling as well as signs of contamination (e.g. discoloration).
9.3.1 Visually inspect the QMA 250 analyzer
Prerequisite
● PrismaPro deactivated
1
1
1
4
4
5
2
3
Fig. 20:
Ion source with open ion source as an example
1 Filament unit connections (3×)
4
Ion source connections (3×)
2 Deflector cage
5
Anode cage (internal)
3 Ceramic insulators of the filament wiring and ion source wiring
6)
6)
The ceramic insulators of the filament wiring are longer than the ceramic insulators of the ion source wiring.
Maintenance
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Содержание PrismaPro QMA 250 F1
Страница 1: ...OPERATING INSTRUCTIONS EN Translation of the Original QMG 250 PRISMAPRO Compact mass spectrometer ...
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Страница 88: ... BG6001 ed E Date 2101 P N BG6001BEN ...