AKO 52201 Mode D'emploi page 14

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Detector heating time
After receiving the electrical power supply, the gas detector needs a heating time of around 5 minutes,
during which it will NOT detect leaks. This time is indicated by means of a quick flashing of the green led
on the detector itself.
Self-diagnosis function
The unit incorporates a self-diagnosis system of the detector and the wiring between the detector and alarm station.
In the case of malfunction, the station will alert making three consecutive tones every 2 minutes, and activating the
visual alarm and the detector status led, while the detector will alternately activate its status leds.
7.- Maintenance
Clean the surface of the equipment with a soft cloth, water and soap.
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Do not use abrasive detergents, petrol, alcohol or solvents, as this might damage the sensor.
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AKO guarantees the calibration of the detectors during the first 3 years from the date of
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purchase, and after this time, it is advisable to replace the detector.
We recommend changing the detector in the event of having been exposed to high gas concentrations.
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According to standard EN-378, the correct operation of the detector should be checked at
least once a year, ask about if your current local regulations require lower intervals.
CHECK METHOD
Preparation:
Disconnect the unit's power supply, open the detector's cover and change the delay switch to "Without delay".
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Close the cover and connect the unit's power supply again. Wait for 5 minutes before making the check.
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Start of the check:
AKO-52211 (Type A): Put a normal lighter 5 cm underneath the detector and release gas for 4 seconds.
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AKO-52212 (Type B): Put a normal lighter 10 cm underneath the detector and release gas for 2 seconds.
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Check that:
The pre-alarm activates after a few seconds. The detector's green indicator turns off and the red indicator starts
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to flash. The station beeps intermittently. The pre-alarm relay activates.
The alarm then activates, and the detector's red indicator turns on permanently. The alarm station emits a two-
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tone sound. The alarm relay activates.
The alarms disappear after 1 to 2 minutes. The detector's red indicator turns off and the green indicator
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starts to flash slowly. The alarm and pre-alarm relays deactivate.
-If the pre-alarm does not activate, check that it has not been cancelled in the alarm station (consult the
station's instructions manual).
-If the pre-alarm or alarm do not activate, try it again releasing gas for a longer time.
-An excessive exposure might reduce the delay between the activation of the pre-alarm and the alarm, and lengthen
the waiting time for their deactivation.
-Remember to press the reset button to delete the alarm log (green button) after checking.
When you have finished the check, remember to change the delay switch to its initial configuration again,
disconnecting the power supply before using it.
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