Maintenance
Filter
Keyway alignment
Pull straight out (do not
twist)
to remove
sensor
Unscrew tip to
replace filter
Push straight on (do not
twist)
to install
sensor
Batteries:
Install Batteries
: Remove screw located at rear end of unit and
pull down hinged battery door to open as shown. Insert positive
battery (+) end towards the front of the battery compartment
Sensor:
Replace Filter
: Unscrew sensor tip as shown to replace filter.
Replace filter whenever it becomes visibly dirty or every 2 to 3
months depending on use.
Replace Sensor
: Remove sensor by pulling out of socket. Install
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
+
ATD-3700
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 8 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 8 stops and the green sensitivity LED turns on.
The audio “beep” increases in frequency and probe LED begins
to blink steadily.
2
ATD-3700 Control Panel
Digital Leak Size
Indicator
Low Battery
Indicator
Sensitivity Level
Audio Mute &
Sensitivity Level
Power
On/Off
