Hama 186434, Operating Instructions Manual

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6
7. Functions of the + and M buttons
• Press the + button (B) to check the max /
min measured values. Holding the + button
(B) for longer permanently deletes all of the
measurements made so far.
• Pressing the M button allows the temperature
display to be toggled between Celsius and
Fahrenheit.
8. Recalibration of the product
• Press and hold the + (B) and POWER (A) buttons
simultaneously for approximately 3 seconds to
recalibrate the product. Always carry out this
calibration at the commissioning stage and after
prolonged periods of non-use.
• Calibration should be carried out outdoors for
around 20 minutes, as CO
2
levels here are usually
around 400-450ppm.
• Please ensure that there is no CO
2
source in the
immediate vicinity. Avoid direct sunlight and rain.
• CO
2
is detected after calibration. Please try to
avoid perfumes, paints, air fresheners, cigarette
smoke, alcohol, chemical substances and so on
while carrying out measurements since these can
lead to incorrect measuring results.
9. Care and maintenance
Note
Disconnect the device from the mains before
cleaning and during prolonged periods of
non-use.
• Only clean this product with a slightly damp,
lint-free cloth and do not use aggressive cleaning
agents.
• Ensure that no water is able to enter the product.
10. Warranty Disclaimer
The measuring device must not be used as a
warning device for dangerously high concentrations
(e.g. industrial safety monitoring). It is not suitable
for medical institutions, certification or test
measurements. The measuring device is primarily
used for testing purposes and for orientation in
private households. No liability is accepted for
possible damage in case of malfunction.
It is not possible to transfer data via the USB cable.
Hama GmbH & Co KG assumes no liability and
provides no warranty for damage resulting from
improper installation/mounting, improper use of
the product or from failure to observe the operating
instructions and/or safety notes.