Analyzer Cell Maintenance; Analyzer Cell Disassembly/Reassembly - Pfeiffer Vacuum ASM 390 Additional Installation, Operation And Maintenance Instructions

Service - Maintenance
3. Update the settings of the calibrated leak (see chapter "Spectro Menu" in the Operating Instruc-
4. Perform a calibration on the detector.
Every time a calibrated leak is replaced, update the calibrated leak setting (see chapter "Calibrated leak
setting" in the Operating Instructions).
This operation can be carried out with the information featured on the calibrated leak rating plate or the
calibrated leak certificate supplied with the leak.
Example of calibrated leak rating plate
F-74000 ANNECY
S/N:FC15000123
P/N:119678
Calibration date...: 15-Jan-2015
Lost per year........: 2 %
Temperature........: 23°C
Temperature coeff: 3 %
Tightness test after calibrated leak maintenance
► Open the calibration valve to carry out the test.
► Spray a light flow of helium 4 around the calibrated leak.
5.6 Analyzer cell maintenance
5.6.1 Analyzer cell disassembly/reassembly
Risk of burns in case of contact with hot surfaces
For the operator's safety, the products are designed to avoid thermal risk. However, specific operat-
ing conditions may exist that require extra caution on the part of the operator due to the high temper-
atures (surfaces > 70 °C for parts inside the cover(s)).
► Wait for the product to fully cool down before working on it.
► Protective gloves must be worn in accordance with standard EN 420.
Prerequisite condition(s) for the analyzer cell disassembly
1. Make an air inlet on the vacuum circuit (see chapter "Secondary pump and analyzer cell mainte-
2. Power off the leak detector (see chapter "Powering Off").
3. Remove the work plan (see chapter "Work plan disassembly/reassembly") and the front cover
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tions).
1,3E-7
Value..:
mbar.l/s ± 10 %
1,3E-8 Pa.m 3 /s ± 10 %
– leak rate measured < 1 · 10
Pollution of vacuum circuit components
During maintenance operations for vacuum circuit components, avoid any contamination
which could subsequently result in the degassing of the parts. Special caution must be ex-
ercised to ensure cleanliness. To avoid this:
● Perform the maintenance in an appropriate area (clean, dust-free and ventilated).
● Use non-woven materials.
● Dust the parts with filtered dry air (unless otherwise stated).
● Wear unpowdered vinyl gloves (clean room gloves).
WARNING
nance" of the Operating instructions).
(see chapter "Front cover disassembly/reassembly").
HELIUM CALIBRATED LEAK
-8 mbar·l/s (1 · 10 -9 Pa·m 3 /s).