PerkinElmer Clarus SQ 8 MS Series, Hardware Manual

Page: 137 / 184

Maintenance
135
It must be solvent-washed and nitrogen-dried. The bulkhead connector at the rear of
the instrument is a 1/8 inch Swagelok fitting.
To prepare mass spectrometer for CI:
NOTE: Make sure to purge the CI line before you attach it to the rear of the mass
spectrometer.
1.
Obtain the CI gas cylinder for your analysis.
2.
Connect the gas line to the CI Gas connector on the rear of the mass
spectrometer.
3.
Ensure that the mass spectrometer is at the proper vacuum level.
4.
Turn on the CI gas and set the delivery pressure to 15 psi (104 kPa).
WARNING
AVERTISSEMENT
If ammonia is used for chemical ionization, all fittings and tubing
must be stainless steel to avoid corrosion. Also, the forepump
must be vented to a fume hood or trap.
Si l'ammoniac est utilisé pour l'ionisation chimique, tous les
raccords et tubes doivent être en acier inoxydable pour éviter
toute corrosion. En outre, le fordump doit être évacué vers une
hotte ou un piège