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Maintenance
Do not use chemicals. The following substances can impair
sensor function and trigger false alarms: Methane, propane,
isobutane, isopropanol, ethylene glycol, benzene, toluene,
ethyl acetate, hydrogen sulphide, sulphur dioxide, products
with an alcohol base, dyes, thinners, solvents, adhesives,
hairsprays and cleaning products.
Do not use flammable liquids for cleaning the alarm.
The electrochemical sensor is subject to ageing. The sensor
lifespan is thereby limited to 7 years.
The sensor cannot be exchanged. For this reason, replace
the entire device 7 years after the date of its installation at the
latest. (See label on the rear side of the alarm).
Care and maintenance
39
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