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Rev. 11-5 12/15/2020
Copyright © 2020 by Cool Air Incorporated. All rights reserved.
•
4-20 mA output signal shows an increasing value that
corresponds to the digital display per the 4 to 20mA
range selected.
4.
Remove the ammonia test gas.
5
5
.
.
Wait until the ammonia concentration reading is below the
pre-alarm set point
, then move the service jumper to the
“OFF” position and close the detector enclosure. Remember,
this step is only required if the service jumper was moved to the
“ON” position in step # 1 above. Testing is now complete.
C
C
a
a
l
l
i
i
b
b
r
r
a
a
t
t
i
i
n
n
g
g
t
t
h
h
e
e
D
D
e
e
t
t
e
e
c
c
t
t
o
o
r
r
Z
Z
e
e
r
r
o
o
o
o
f
f
f
f
s
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e
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t
t
a
a
d
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j
j
u
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s
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If after the prescribed 20 minutes warm up the detector is not
reading zero, follow these instructions to adjust the zero offset.
1.
Open the detector enclosure and move the service jumper to
the “ON” position, if needed. This step deactivates the pre-
alarm, 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
jumper in the “OFF” position.
2.
Install the jumper on the jumper pins (labeled “SET1”) located
below the rotary selector switch on the front panel-mounted
circuit board.
3.
Set the rotary selector switch to position “2”.
4.
Press and hold the “ENTER” button for 2 seconds.
5.
The display should now read zero.
When installing a new sensor follow these instructions
6.
Open the detector enclosure and move the service jumper to
the “ON” position, if needed. This step deactivates the pre-
alarm, 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
jumper in the “OFF” position.
7.
Install the jumper on the jumper pins (labeled “SET1”) located
below the rotary selector switch on the front panel-mounted
circuit board.
