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The position of the detector is a crucial factor for its correct functioning during gas detection. In order to obtain the
maximum results from a device and minimize the probability of false alarms, it is recommended to follow this scheme
and keep in mind the following general regulations. The CHCO is an equipment adapted to be mounted on a wall.
When installing is good to use reasonable care that requires an electronic device, and then:
- Install the detector away from sources of heat.
- Avoid that the liquids may come into contact with the detector, remembering that its box has a degree of protection
IP42.
The installation height of the detector CHCO must be from a minimum to a maximum of:
Maximum 30 cm from the highest point of the ceiling
Minimo 160 cm. from the floor
1) When powering on the CHCO, you will see that the MAINS LED lights up and starts blinking for about 90
seconds.
Afterward the LED stays on without blinking, the CHCO is ready to detect.
2) Press the button placed on the side the sensor to simulate the presence of gas.
The Led alarm lights up, the relay changes the state of work.
Ceased the alarm, the Led turns off, it stops the sound of the buzzer and the connected devices will be disabled.
Test run with GAS
a) To test the explosive gas emit the gas from a pre-calibrated bottle within 20% of the LEL inside the sensor
concerned, see item 6 (of page 3).
N.B. This test is recommended to be performed once a year.
Nota: Do a test with a common cigarette lighter could damage the sensor.
b) To test the toxic gas emit gas from a pre-calibrated bottle from 30 to 300 ppm, in the grey sensor, see item
5 (of page 3).
Using other types of gas could damage the sensor.
N.B. This test is recommended to be performed once a year.
Turn on and testing
Methane and carbon monoxide
gas detector
max. 30 cm from the ceiling
min. 1,60 from the floor
0 15 30 45 60 75 90 105 120 135 150
Clean
Air
Diagram of detection
G
a
s
d
e
te
c
ti
o
n
in
p
p
m
30 ppm CO
50 ppm CO
100 ppm CO
300 ppm CO
Time in minutes
Installation measures and positioning
Table n° 2 of EN 50291
“CONDITIONS ALARMS ”
30 ppm
120 minutes
50 ppm
60 minutes
100 ppm
10 minutes
300 ppm
within 3 minutes
Concentration co
ALARM AFTER
The detector must not be installed
behind the barriers that hinder the
prompt detection of gas . near of
aspirators or fans and in areas where
the temperature falls below 10 ° C or
rises above 40 ° C.
