User`s guide

Routine Maintenance
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9. Press the OK button to accept the new calibration or
press the Cancel button to keep the previous values. The
carrier gas inside the tube will be vented for 1 minute;
“Cooling Tube” will be displayed. The tube will be
unloaded, recapped and returned to the carousel.
The pressure transducers used for the impedance testing will now be
calibrated and ready for use. It is recommended that this quick and
simple procedure be repeated when the Valve temperature is
changed, when the glass fiber filter in the upper tube seal is changed,
when the type of carrier gas is changed and at intervals during
operation (e.g. after 200 analyses).
Removing and Replacing the Cold Trap
After prolonged use, the packing in the cold trap may become
contaminated, begin to decompose, or shift. This will cause the
retentive properties of the trap to diminish, indicated by decreased
output when a standard test sample is analyzed, or by skewed peaks.
If in doubt, replace the cold trap with a new one, placing all ferrules
at the same time.