Koehler K44100, Руководство по эксплуатации и инструкция, Страница: 12 / 20

K441XX Automatic Non-Woods Metal Noack Evaporative Apparatus
Operation and Instruction Manual
K441XX-Manual
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Figure 10: Crucible / Bath Ready Prompt
11. The
shut off chime
button will appear at the
top right corner of the screen when the acoustic
alarm is sounded. The volume of the chime is
very loud so the operator may want to shut off
the chime for the current alarm.
NOTE:
Shutting off the chime will only silence
the current crucible alarm. Therefore, future
alarms or prompts will still give off an audible
chime.
12. As per the on-screen instructions, ensure that
the crucible’s cover is correctly screwed on the
crucible’s body.
13. Insert the crucible into the bath and connect the
extraction tube to the Y shaped pipe on the
Woulff bottle as illustrated on Page 6, Figure 1.
NOTE:
Ensure that the sample PT100
temperature probe is inserted into the crucible
and connected to the analyzer even if Method A
has been selected.
14. Once the crucible is inserted and the extraction
tube is connected, you may touch the screen to
start the vacuum and the analysis.
Figure 11: Aspiration Activation Screen
15. The aspiration / vacuum will now be activated.
See Figure 11 above. Regulate the aspiration /
vacuum to -2 mbar by slowly closing the bleed
valve halfway and regulating the vacuum
regulator on the analyzer’s side in order to
reach 20 ± 0.2mm on the inclined manometer (-
2mbar on screen).
16. The
Aspiration
label at the right side of the
screen will silently flash during this phase until
the aspiration reaches its desired setting and is
stabilized.
NOTE:
Although the aspiration level should
automatically be maintained at -2 mbar it may
need to be readjusted at times due to the
heating vapor tensions. An acoustic alarm will
sound to alert the operator when the aspiration
level derives from the prescribed tolerance
range. It is imperative the aspiration is
readjusted in the shortest time possible.
17. Once the aspiration has been regulated, touch
the screen to start the analysis. The analyzer
will check if the aspiration is stable, if not, the
instructions for its regulation will pop up again
to allow the operator to repeat the procedure.
6.3 Test Procedure
1. The
Method
icon is disabled while the analysis
is running. If Method B was chosen, the graph
will show the Sample PT100 probe
temperature. The
Start Analysis
button will
become a
STOP
button, allowing the operator
to interrupt/abort the analysis.
2. If the analysis is interrupted within 5 minutes
from the start, any collected data is discarded
and the analysis will not be recorded,