Pfeiffer Vacuum ASM 390 Additional Installation, Operation And Maintenance Instructions page 17

Analyzer cell disassembly
1 Harness
2 Fixing screws
1. Disconnect the harness from the cell.
2. Remove the cell's 6 fixing screws.
3. Free the analyzer cell manually and vertically.
Analyzer cell reassembly
1 Harness
2 Fixing screws
Distortion of the measurement results with non-compliant analyzer cell
When it leaves the factory, the analyzer cell is set for the product in which it is installed.
The use of an analyzer cell different from the original component requires settings. Without
these settings, the measurements made by the product are not correct. Only a Pfeiffer Vac-
uum service center can make these settings.
Tightness test after analyzer cell reassembly
► Spray a light flow of helium 4 around the analyzer cell.
– leak rate measured < 3 · 10
1
1
3 Analyzer cell
1
3
3 Analyzer cell
-10 mbar·l/s (3 · 10
Service - Maintenance
2
3
2
1
-11 Pa·m 3 /s).
2
3
2
3
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