Teledyne First Responder CG, User Handbook Manual, Page: 38 / 104

3-12
OPERATION FIRST RESPONDER CG - USER HANDBOOK
(Alternate flash)
Calibration Due
in 25 days
Figure 3-10 Days until Calibration Required
If calibration is overdue, the instrument will automatically
switch OFF.
The pre-set re-calibration interval is 30 days.
This period can be altered as an option, however, you should
ensure that the instrument is always within its calibration
period prior to use.
Switching OFF
A double press of (Button 1) switches the instrument
OFF.
Changing Gas Range
Each single press of (Button 2) changes the range
selected. The display changes the range from Vol GAS -
O2 - Vol GAS, etc.
Display will alternate between gas range and ‘PUR’.
Switching Pump OFF / ON
A single press of (Button 1) switches the instrument
pump OFF. A further press of Button 1 switches the pump
ON again.
Zero Vol Gas Range
The Volume Gas range can be manually zeroed if the gas
reading is between -5% and +5% Vol Gas.
To zero, a single press of
(Button 3) is required and
should be carried out in fresh air.