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19
Rev. 4.2 4/10/2020
Copyright © 2019 by Cool Air Incorporated. All rights reserved.
CALIBRATION:
1.
Visually inspect the leak detector for any corrosion, damage,
etc. that could possibly affect the calibration procedure.
2.
Make sure that the leak detector is powered up for a
minimum of 8-hours before the calibration procedure is
performed.
3.
Slide the service switch to the “SERVICE” position. This
step deactivates the Early Warning, Alarm, and Auxiliary
relays so that any attached strobe lights, horns, and/or
monitoring systems are not activated. In some applications,
if alarming is required, leave the service switch in the
“NORMAL” position.
4.
Place a
new
ammonia test bottle over the sensor and after
30-45 seconds (slightly longer in coolers & freezers) the top
LED lamp (large lamp) shall light up. Also, the Alarm and
Auxiliary relays shall de-energize. Remember, during the
calibration procedure, the Early Warning LED lamp (amber
lamp) will light up, and the Early Warning relay shall de-
energize. This is a
factory set, non-adjustable setting
.
5.
To fine tune the Alarm set point, adjust the POT2
potentiometer (large potentiometer) until the Alarm LED
lamp just lights up and the relays de-energize. Adjusting
clockwise shall cause the LED lamps to light up from the
bottom to the top. Adjusting counterclockwise shall cause
the LED lamps to turn off from the top to the bottom.
6.
Slide the service switch to the “NORMAL” position. this
step is only required if the service switch was turned to the
“SERVICE” position in step # 4 above.
7.
We recommend this calibration to be performed once a year
or whenever the sensor has been replaced. Use a new
ammonia test bottle. These can be purchased from your
local Cool Air Incorporated distributor or directly from the
manufacturer.
