PerkinElmer PINAACLE 900 Series, Руководство по оборудованию и обслуживанию для клиентов

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290
Maintenance
3. Switch on the spectrometer at the operational on/off switch located at the front
of the instrument.
4. If you have installed a new graphite tube, see Conditioning the Graphite Tube
on page 291 ).
If you are reusing a previously conditioned graphite tube, heat manually at
2500 °C for 5 seconds to remove contamination (see
Manually Heating the
Graphite Tube on page 292 ).
Resetting Cycles for Tubes and Contacts
Every time a furnace program containing a read command runs to the end, the
system increments two counters; one for the graphite tube and one for the graphite
contacts.
Note
Every time you open the furnace, subsequently always heat it out manually
at 2500 °C for approximately 5 seconds.
Note
It is recommended that you visually inspect the graphite tube and the
contact cylinders for wear and tear and also for corrosion on the surfaces
of the tube and cylinders. If there is visible wear and corrosion on the
surfaces, then the contacts and/or tube should be replaced, since this can
impact the quality of the analytical results. Unexplainable spikes on the
peak profile of the analysis is also an indication that the graphite tube or
the contact cylinder is wearing off and may need to be replaced. The
precision of the analysis degrades once these components start to show
signs of wear and tear.
Note
If the graphite tube breaks inside the contact cylinder, you must clean the
contact cylinder/furnace housing thoroughly in addition to replacing the
contact cylinder.