Pfeiffer Vacuum PrismaPro QMA 250 F1, Translation Of The Original

Page: 64 / 88

Symptom / malfunction messages Possible causes Remedy
Filament potential error
Filament voltage too high (filament
open)
Filament voltage too low (filament
shorted)
(Filament potential error)
Insufficient vacuum ● Ensure that the pressure is below the maximum
operating pressure: < 5 × 10
-4
hPa.
Analyzer filament defec-
tive (broken or short-
circuited)
● Check the ion source elements and analyzer ele-
ments for short-circuit and insulation.
● Ensure that the wiring screws are securely fas-
tened.
● Ensure that the flange or the pipe features an in-
ner diameter of ≥ 37 mm, preferably > 39 mm.
● Replace the filament unit, the ion source or the
analyzer.
Poor contact of wiring ● Check the ion source elements and analyzer ele-
ments for short-circuit and insulation.
● Ensure that the wiring screws are securely fas-
tened.
● Ensure that the flange or the pipe features an in-
ner diameter of ≥ 37 mm, preferably > 39 mm.
● Replace the filament unit, the ion source or the
analyzer.
Filament current error
Filament current too high (filament
shorted)
Filament current too low (filament
open)
(Filament current error)
Insufficient vacuum ● Ensure that the pressure is below the maximum
operating pressure: < 5 × 10 -4 hPa.
Analyzer filament defec-
tive (broken or short-
circuited)
● Check the ion source elements and analyzer ele-
ments for short-circuit and insulation.
● Ensure that the wiring screws are securely fas-
tened.
● Ensure that the flange or the pipe features an in-
ner diameter of ≥ 37 mm, preferably > 39 mm.
● Replace the filament unit, the ion source or the
analyzer.
Poor contact of wiring ● Check the ion source elements and analyzer ele-
ments for short-circuit and insulation.
● Ensure that the wiring screws are securely fas-
tened.
● Ensure that the flange or the pipe features an in-
ner diameter of ≥ 37 mm, preferably > 39 mm.
● Replace the filament unit, the ion source or the
analyzer.
Focus error
It is not possible to start/maintain the
focus voltage.
(Focus error)
Focus plate shorted ● Check the ion source elements and analyzer ele-
ments for short-circuit and insulation.
● Ensure that the wiring screws are securely fas-
tened.
● Ensure that the flange or the pipe features an in-
ner diameter of ≥ 37 mm, preferably > 39 mm.
● Replace the IS 250.
Focus voltage out of ex-
pected range
● Check the ion source elements and analyzer ele-
ments for short-circuit and insulation.
● Ensure that the wiring screws are securely fas-
tened.
● Ensure that the flange or the pipe features an in-
ner diameter of ≥ 37 mm, preferably > 39 mm.
● Replace the IS 250.
Internal power supply failure Error in the electronic unit
(QME)
● Contact Pfeiffer Vacuum Service .
Tbl. 16: Hardware errors
Malfunctions
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