Teledyne First Responder CG, User Handbook Manual, Page: 32 / 104

3-6
OPERATION FIRST RESPONDER CG - USER HANDBOOK
CSM mode
(Confined Space Monitor)
In this mode the instrument operates as a safety monitor
for use when entering confined spaces which may contain
hazardous gas mixtures (flammable, toxic and/or asphyxiant).
The instrument samples the ambient atmosphere to which
the operator is exposed and generates alarms for low /
high Oxygen, high LEL, high Carbon Monoxide and high
Hydrogen Sulphide gas.
When an alarm is activated, the instrument display will
automatically change to the alarming range.
Switching ON in CSM Mode
Pressing and holding (Button 2) turns the instrument
ON in CSM mode and switches ON the pump. This initiates
the instrument’s warm-up cycle, an example of which is
shown in Figure 3-6. The display of alarm levels after the
warm-up sequence may be cancelled by a single press of
any button.