1. Quick Operating Guide
Switch on:
Press large button; alarm
test and LCD test occurs,
followed by battery level
display.
Normal condition:
Gas level displayed on
LCD*. Intermittent
‘confidence’ signal
(if selected).
Alarm condition:
Fast flashing red LEDs
and sounder.
Alarm reset:
Press large button when
hazard has passed.
Activate backlight:
Press and hold large
button.
Switch Instrument
Press both buttons
Off:
together & release.
Zero instrument:
When unit is off, press
small button & hold.
The symbol will
appear. Keeping the small
button pushed in, press
the large button.
For oxygen models, the symbol appears,
and pressing the large button sets the reading
to 20.9%.
* reading may take a few seconds to settle
after switch-on.
2. Unpacking
Check the shipment against the packing list
and carton labels. Instruments and
accessories may be packed separately. Smaller
Gasman II
Instruction Manual
Issue 5
Page 4
11/99
