Labconco XVS Ventilation Stations 4865060 User Manual

Page 42

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Chapter 6: Maintaining your XPert or XVS Enclosure

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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. To lower the face velocity to the operating point, simply alter the

exhaust volume with the speed control on the FilterMate or exhaust
damper. Then recheck the face velocity with an anemometer to
confirm the display on the digital airflow monitor.

Digital 1000 Alternate Calibration Procedure -
Constant Volume Conditions

1. To successfully calibrate, it will be necessary to change the face

velocity by opening and closing the enclosure’s sash. The airflow
monitor is factory set to be calibrated with a difference of at least 50
fpm and can be changed by adjusting the “lower/higher air sample
difference”. The in flow face velocity speeds provided in the chart
below are suggested to successfully calibrate the Digital 1000.

2. Before proceeding with calibration, it will first be necessary to

configure the airflow monitor. Go to the setup and then CAL
CONFIG MENU and adjust the “lower/higher air sample difference”
to 10 fpm. This will allow you to successfully calibrate with
minimum difference values of 10 fpm.

3. While in CAL CONFIG MENU, change the “sensor difference” from

10% to 3%.

4. While in CAL CONFIG MENU, adjust the red low alarm to the

desired setting (See the chart below for range and suggested settings).
Then adjust the yellow “CAUTION or WARNING” to the desired
setting (See the chart below for range and suggested settings). Then
adjust the “CAUTION or WARNING” air reset to 3 fpm. This sets
the alarm condition.

CAUTION WARNING

“YELLOW LED” Setting

LOW ALARM

“RED LED”

Setting

Low Calibration

Set Point

Sash Open

(fpm)

Range

user defined

(fpm)

Suggested

Set Point

(fpm)

Range

user defined

(fpm)

* Suggested

Set Point

(fpm)

8" Sash

Height

10" Sash

Height

High Calibration

Set Point

or Enclosure

Operating

Inflow Speed

Sash Closed

43 – 53

40 – 50

60 fpm

63 – 73

60 – 70

80 fpm

83 - 93

80 - 90

100 fpm

Because of airflow fluctuations in a typical laboratory environment Labconco

suggests setting the “RED LED” low alarm set point to 20% below the enclosure’s
operating speed.

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