Alcatel ASM 180 TD User Manual page 140

Check the flanges
for leaks
S
FILAMENT DOES NOT LIGHT
The filament indicator does
not come on or the alarm
indicator light is on
NO
FILAMENT LIGHT
The filament indicator
is flashing
Spray helium to leak check the flanges of the analyzer cell
and preamplifier. Eliminate any leaks as describe above.
8/8
Analyzer cell maintenance
The detector must be on for a few minutes before leak
YMPTOM AND CAUSE
Gross leak
YES
YES
Alcatel Vacuum Technology France - ASM 180 TD/TD+ - ASM 181 TD+ User's Manual
E 10
R
EMEDY
Eliminate the leak : Check the
torque of the screws on the
analyzer cell and VHS
preamplifier flanges.
If necessary, install the new
metal seals (cell seal and VHS
preamplifier seal).
Run an autocalibration
(see C 30)