User's Manual

CO Technology Limitations:
The CO5-MC(US) utilizes an electrochemical CO sensing element, and
therefore has certain performance limitations. The CO sensing element
has a typical life of 6 years from the date of manufacture, and while
the product has a timer to create a trouble condition after 6 years of
operating, the date code of the product, rather than the timer, should
determine when the product is replaced. The CO sensing element has a
carbon fi lter that provides resistance to false alarms caused by cross-in-
terference gasses, but the fi lter can be saturated, and so the product
should not be installed in locations where high concentrations of these
gasses are present. Cross-interference gasses include, but are not
limited to: Methane, Butane, Heptane, Ethyl Acetate, Isopropyl Alco-
hol, Carbon Dioxide, Ammonia, Ethanol, Toluene, Trichloroethane, and
Acetone. Only a cloth moistened with water should be used to clean the
CO5-MC(US) housing. The movement of gases into the sensing element
can be impaired if a sealant blocks the porous surface of the CO sensor.
The CO5-MC(US) should not be exposed to aerosol products such as
furniture polish, paint or varnish that can coat the CO sensing element
and render it inoperative.