Atest Gaz Alpa EcoWent XT, User Manual

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The costs of calibration and travel should be incurred by the user.
It is prohibited to test the sensor individually by applying a small amount of gas with an
unknown composition and concentration on it, e.g. from a lighter. Such an operation leads to
the poisoning of the sensor and the detector de-calibration.
9.4.2 Replacement of consumables
Details of the lifetime of consumables can be found in Table 7.
9.4.2.1 Sensor plate replacement
During operation there is a natural loss of metrological parameters of the sensors. A compensation of this
phenomenon takes place through a periodical, systematic regulation of the indications – until the
replacement of the detector is necessary. It is assumed that the exchange should be carried out after the
loss of sensitivity below 50% of the initial sensitivity.
It is impossible to replace the sensor only. The whole component is subject to replacement – the sensor
mounted on the plate (sensor plate) – see Table 7.
In order to replace the sensor plate, it is necessary to:
turn off the power supply to the detector,
open the housing,
replace the sensor plate (see Figure 2),
close the housing,
turn on the power supply to the detector.
9.4.3 Periodical inspections
It is recommended to conduct periodical inspections every 3 months. Within the scope of a periodical
inspections, it is necessary to conduct the visual inspection of the external installations and system devices,
as well as to conduct the detector operation test:
activating the first detector with gas and checking the reaction of the control unit (it should display
WARNING or ALARM – depending on the concentration of the fed gas),
repeat the operation for all detectors.
9.4.4 Maintenance
The only manner of cleaning the device is to wipe it with a damp soft cloth. Agents containing solvents,
petrol or alcohols cannot be used to clean the sensor.
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User Manual: POD-042-ENG R04