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Rev. 11-5 12/15/2020
Copyright © 2020 by Cool Air Incorporated. All rights reserved.
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During normal operation, the rotary selector switch is typically set
to position “0” or “1”. Set the switch to “0” to display ammonia
concentration only, or to “1” to display ammonia concentration and
external temperature (if an external temperature sensor is in use). If
the rotary selector switch is set to “1”, the front panel digital display
will alternate between ammonia concentration in PPM and external
temperature in °F.
You can change when the display starts displaying the ammonia
concentration. It can start displaying at 0PPM, 10PPM, or 25PPM.
With the SET jumper on and the Rotary Switch in position 7 you
can use the up and down buttons to select either;
d0 – Display shows all readings above 0PPM
d10 – Display shows all readings above 9PPM
d25 – Display shows all readings above 24PPM
Once you have selected the desired display property you must hold
the ENTER button for two seconds before removing the SET 1
jumper or changing the rotary switch.
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The Hi alarm set point can be set from 25PPM to 1000PPM in
5PPM increments.
The Low Alarm set point can be set from 5PPM to 900PPM in
5PPM increments.
1.
Open the detector enclosure and move the service jumper to the
“ON” position.
2.
Set the rotary selector switch to position “3” to program the
ammonia the Hi-Alarm set point (ALARM RELAY) or “4” to
program the ammonia Low Alarm set point (PRE-ALARM
RELAY).
3.
Press the “UP” or “DOWN” button until the desired set point
concentration in PPM is displayed.
