D640 Control Panel
D640
Operating Instructions
TURN ON:
Press the ON/OFF button once to turn on and again
to turn off.
NOTE:
Hold button down for approximately 1 second
to turn unit off.
WARM UP
: The detector automatically starts heating the
sensor. During the heating cycle, the digital leak size indicator
will flash 0
and the detector will sound a slow “beep”. Warm up
is usually less than 20 seconds.
READY
: The detector is ready to begin searching for leaks
when the flashing 8 stops and the green sensitivity LED turns on.
The audio “beep” increases in frequency and probe LED begins
to blink steadily.
2
Digital Leak Size
Indicator
Low Battery
Indicator
Sensitivity Level
Indicators
Audio Mute &
Sensitivity Level
Selectors
Power
On/Off
