17
MAN3038-2
DISCOVERY PRODUCT GUIDE
Maintenance and Service
The electrochemical cell used in the Discovery CO fire detector has a more limited life than would normally
be expected from a smoke detector. In a typical environment, the life of the cell is seven years.
High temperature or low relative humidity can, however, reduce the life significantly. The limits given in the
section ‘
TECHNICAL DATA
’ overleaf should be carefully observed.
It is essential that systems using CO fire detectors be correctly maintained and that the maintenance
schedule include functional testing of the CO fire detectors. CO fire detectors will not respond to the aerosol
testers commonly used for the in-situ testing of smoke detectors. The Apollo (No Climb) detector tester with
a CO test gas canister can be used to test CO detectors. If there is any doubt over the sensitivity of a
Discovery CO fire detector it should be returned to Apollo for servicing and calibration.
Note: The CO detector cannot be tested with the Discovery Test Set
Health and Safety Guidelines
This product contains a sealed electrochemical cell and in normal usage represents no chemical hazard in
the sense of COSHH and the Health and Safety at Work Act 1974. Chemical hazard can, however, arise if
the following notes on storage, handling and disposal are not observed.
For maximum life, the product should be stored before installation in clean dry conditions between 0°C and
20°C. It should not be exposed to temperatures outside the range –40°C to +55°C or to organic vapours.
The electrochemical cell contained in this product is fitted into sockets on the printed circuit board; to avoid
damage to the cell do not remove it.
The electrochemical cell contains sulphuric acid in a relatively concentrated state. In the event of leakage
(which may be caused by mechanical damage or use outside the operating specification for the cell) the cell
should be removed from the detector using protective gloves. Avoid contact with any liquid. If skin or eye
contact with the electrolyte occurs, wash immediately with plenty of water and obtain medical advice. All
traces of electrolyte should be washed away with copious amounts of clean water. The cell should be
disposed of according to local waste management requirements and environmental legislation. It should not
be burnt since it may release toxic fumes.
Mode
Alarm
Threshold
(ppm)
Minimum
time to alarm
(seconds)
Typical application
1
30
60
Sleeping with no ambient CO
2
45
30
General use fast response such as supplementary
protection in atria
3
45
60
General use and sleeping risk with some low level
CO (such as from light smoking or an unventilated
gas fire)
4
60
30
General smoking area and supplementary detection
of deep seated fires such as laundry rooms
5
75
30
Supplementary use in kitchen or boiler room
9.2
Product Codes
Product Codes
AS1603-14
Discovery Carbon Monoxide Detector
58000-300AMP
201-0102 (58000-330)
