9
Chapter 4
Maintenance
The Alnor Model AXD620/Airflow Instruments PVM620 requires very
little maintenance to keep it performing well.
Recalibration
To maintain a high degree of accuracy in your measurements, we
recommend that you return your Alnor Model AXD620/Airflow
Instruments PVM620 to TSI for annual recalibration. Please contact
one of TSI’s offices or your local distributor to make service
arrangements and to receive a Return Material Authorization (RMA)
number.
The Alnor Model AXD620/Airflow Instruments PVM620 can also be
recalibrated in the field using the CALIBRATION menu. These field
adjustments are intended to make minor changes in calibration to
match a user's calibration standards. The field adjustment is
NOT
intended as a complete calibration capability. For complete, multiple-
point calibration and certification, the instrument must be returned to
the factory.
Cases
If the instrument case or storage case needs cleaning, wipe it off with
a soft cloth and isopropyl alcohol or a mild detergent. Never immerse
the Alnor Model AXD620/Airflow Instruments PVM620. If the
enclosure of the Alnor Model AXD620/Airflow Instruments PVM620 or
the AC adapter becomes broken, it must be replaced immediately to
prevent access to hazardous voltage.
www.calcert.com
1.800.544.2843
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