
Maintenance
Pull straight out (do not
Unscrew tip to
replace filter
Push straight on (do not
twist) to install sensor
Install Batteries:
Remove screw located at rear end of unit and
pull down hinged battery door to open as shown. Always insert all
four batter
ies into the battery compartment in the same direction.
Note polarity mark on the inside of the battery door for proper
battery orientation.
Sensor:
Replace Filter
: Unscrew sensor tip as shown to replace filter.
Replace filter whenever it becomes visi
bly dirty or every 2 to 3
months depending on use.
Replace Sensor: Remove sensor by pulling out of socket.
the new sensor by aligning the notch in sensor cover with the raised
keyway on sensor socket holder (see figure below).
Note: Do not force
sensor into socket. Misalignment can
damage the sensor pins.
5
Polarity Mark
ATD3699 Control Panel
Operating Instructions
1. TURN ON:
Press the ON/OFF button once to turn on and again
to turn off.
2. 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.
3. READY
: The detector is ready to begin searching for leaks when
the flashing 0 stops and the green sensitivity LED turns on. T
audio “beep” increases in frequency and probe LED begins to
blink steadily.
Indicator
On/Off
2
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