18
18
The displayed setting is changed by pressing the Up and Down
Buttons. The Up Button will increment the set point by 1 fpm or by
0.01 m/s, depending on the units configuration. The Down Button will
decrement the set point by 1 fpm or by 0.01 m/s. When the desired
setting is displayed, press the Test/Reset Button. The PGM descriptor
will flash once and the horn will give two quick beeps to acknowledge
the save and the monitor will return to normal operation and display the
current airflow reading.
IMPORTANT:
If the Test/Reset button is pressed and held for 2
seconds, the change will not be saved; this is signalled via one long
horn beep
LED Status When Changing the Alarm Setpoint
Alarm
LED Status
Low alarm
Red LED flashes
High alarm
Green LED flashes
Night setback low alarm
Yellow LED flashes
High Alarm Disable
The high alarm is enabled/disabled through the Changing Alarm Set
Points procedure described above. To disable the high alarm, the high
alarm set point should be set to OFF. While scrolling through the high
alarm set point values, the OFF selection is located right after the upper
most range of the allowable values. If the high alarm is enabled, the
relay can be disabled/enabled for the high alarm by using
Configuration Parameter P11.
Emergency Purge
This button can be configured to activate a relay that can be used to
command the fume hood damper to full open until pressed again. See
Configuration Parameter P09 and P10 to set up the relay.
