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Figure 9-5. CO
4. Enter the measured value (target value):
The targeting value can be increased or reduced in increments; if you keep the + key or the – key
depressed, the function switches to a rapid increase/reduction; after approx. 3 seconds, another
increase/reduction occurs.
To increase the targeting value:
• Press the + key.
To reduce the set value:
• Press the - key.
5. Accept and save the target value:
• Press the Enter key.
• Press the Save key.
• The system returns to the main menu. The CO
in the workspace.
Note Excessive CO
Excessive CO
approx. 30 seconds.
Value reset:
If the value isn't changed within the next 30 seconds, the system automatically exits the menu, and
the most recently confirmed value is preserved.
Replacing the HEPA-filter
The HEPA-filter is mounted under a plastic airbox at the bottom of the rear wall in the workspace.
Steps for replacing the HEPA-filter:
1. Power down the unit, shut off the gas supply and allow the workspace to vent.
2. Take the center and bottom insert out of the workspace.
Thermo Scientific
calibration procedure
2
content:
2
content after the calibration can be reduced by leaving the device doors open for
2
display shows the actual value currently measured
2
S
TERI-CYCLE
9
Maintenance
Replacing the HEPA-filter
i160 / i250
9-7
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