Ecom EN2-F, Руководство по эксплуатации

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Page 29
Prefilter
The prefilter made of high-grade steel is within the condensate con-
tainer. It should be cleaned when contamination (with warm water
and dry). Unscrew condensate container and prefilter. Assemble
after cleaning again in reverse order.
Sensors
The sensors get calibrated with the reference gas fresh air by each
switch-on. Their state is permanently checked by the instrument.
New sensors age along the operation time because of the wearing of
the reagents (oxygen sensor) and due to soiling respectively exceed-
ing concentrations beyond the nominal measurement range (toxic
sensors). The output values of the sensors are (menu
"Control" ):
O
2
approx. 20000 mV
Others 0 mV (+/- 150)
If an error message is displayed during calibration and cannot be
eliminated despite several calibration phases, so the instrument must
be checked by a qualified and authorised service centre. The oxygen
sensor must show a value of >7000 mV, otherwise it must be
changed by an authorised service centre.
The CO sensor is protected against exceedings by the internal pro-
gramme. If the limit value of 4000 ppm is exceeded, a second pump
switches on and flows the sensor with fresh air. After sufficient purg-
ing time (X behinds CO disappears) the sensor can be reintegrated
into the measurement system with
<F3> (if you choose
„Yes“
at
„Adjustments“ / „Internal“ / „CO-Automatic“
the CO sensor
switchs to measurement automaticaly). The sensor can also be
manually be excluded from the measurement system with
<F3> .
Prefilter