Labconco XVS Ventilation Stations 4865060 User Manual

Page 43

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Chapter 6: Maintaining your XPert or XVS Enclosure

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5. To complete the CAL CONFIGURATION, be sure to enter “DONE”.

If needed, refer to the Configuration procedure provided on the
following page for additional details.

6. To start the calibration mode, enter “CALIBRATION” mode on the

display from the SETUP menu.

7. Follow the instructions on the display and simulate the low exhaust

volume by fully opening the sash. You may measure the average face
velocity for the low calibration set point or utilize the calculated value
provided in the chart above. The average face velocity for the low set
point is accurately measured by dividing the opening of the enclosure
into equal area grids consisting of at least 9 data collection points and
measuring the velocity at the center of each grid with a calibrated
thermo anemometer. Enter the low value on the display. Be careful
not to block the opening. The low exhaust volume calibration will
take about 5 seconds.

8. Now simulate the high exhaust volume by fully closing the sash to its

normal operating position. Measure the average face velocity for the
high calibration set point to confirm that the source of constant air
volume is providing the desired face velocity for the enclosure. The
average face velocity for the high set point is accurately measured by
dividing the opening of the enclosure into equal area grids consisting
of at least 3 data collection points and measuring the velocity at the
center of each grid with a calibrated thermo anemometer. Enter the
high value set point on the display. The high value must be at least 10
fpm greater than the low value. The high exhaust volume calibration
will take about 5 seconds.

9. Be sure to enter “DONE” after successfully completing the low and

high calibration set points.

10. Once calibration is completed, go to “RUN” and hit “ENTER”. The

value should read close to the high calibration set point.

11. With the sash fully open, the Digital 1000 monitor should go into

“RED LED” low air alarm if successfully calibrated.

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