Owner manual
WhAT’S IN ThE CASE
The CGD900 comes fully assembled in a padded carrying case, along
with a leak test vial that enables you to check that the unit is performing
properly.  See  page  5  for  instructions  for  performing  this  test  titled
“Using the Leak Test Vial”.
SAFETY INSTRUCTIONS
WARNING: Never use a flame to illuminate an area where combustible 
gases could be present. 
OPERATING INSTRUCTIONS
All of the CDG900’s controls and indicators are on the unit’s front panel.
Familiarize yourself with the nomenclature in the picture below before
turning on and operating the unit.
Before the CGD900 can be put to use, it must execute a three-step
startup sequence:
1. TURN ON. Press the on/off  button once to turn on the unit, and
again to turn it off.
2.  WARM  UP. Once  the  unit  has  been
turned on, it automatically begins heating the
sensor. During warm up, the digital leak size
indicator flashes “0”, the sensitivity level indi-
cators  illuminate  in  sequence,  and  the  unit
beeps  slowly  and  repeatedly.  The  warm  up
cycle normally takes less than 10 seconds.
3.  READY. The CGD900  is ready  to  begin
searching for leaks when the display stops
flashing “0”, the green LED for NORM lights up,
and the audio “beep” increases in frequency. To
silence the beep, push the Mute button again.
(Note: It  takes  a  few  seconds  to  restore  the
sound if the Mute button is pushed quickly and
repeatedly.
4
Digital leak
size indicator
Low battery
indicator
Sensitvity
level LEDs
Audio mute 
& sensitivity
buttons
Power 
on/off button
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