Dust Sample; Figure 44 Dust Sensor; Figure 45 Verifying Dust Sample Output Status; Figure 46 Overriding Dust Sample Output - Bard MEGA-TEC W180B Service Instructions Manual

The dust sensor can be verified by:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to I/O Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Analog Inputs;
press ENTER key.
5. Press UP or DOWN keys to scroll to Analog Ins C3-
12.
6. Reference the Value for the current sensor reading
(see Figure 44).
7. To apply an offset to the current reading, press
ENTER key to scroll to Offset.
8. Press UP or DOWN keys to adjust the value to the
desired value.
9. Press ENTER key to save the value and move
cursor to next parameter.
NOTE: The sensor can be disabled if required for
troubleshooting.
10. With the cursor on the Enable parameter, press UP
or DOWN keys to change the value from On to Off.
11. Press ENTER key to save.
FIGURE 44
Dust Sensor

Dust Sample

With the update to the 8301-091 dust sensor and
new control board 8612-064, a dust sample is used
to engage a small fan in the sensor. This command
is automatically engaged by the controller when the
economizer is being used.
To view the status of the dust sample output:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to I/O Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Digital
Outputs; press ENTER key.
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5. Press UP or DOWN keys to scroll to Digital Outputs
C2-2.
6. The status is displayed next to Dust Sample (see
Figure 45).
FIGURE 45
Verifying Dust Sample Output Status
The dust sample output can be put into override to aid
in troubleshooting. The override will only stay active for
5 minutes.
To override the dust sample output:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to I/O Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Digital
Outputs; press ENTER key.
5. Press UP or DOWN keys to scroll to Digital Outputs
C2-7.
6. Press ENTER key to scroll to Enable Override (see
Figure 46).
7. Press UP or DOWN key to change value to Yes.
8. Press ENTER key to scroll to Dust Sample output.
9. Press UP or DOWN key to change value to On or
Off.
FIGURE 46
Overriding Dust Sample Output