Maintenance
Polarity Mark
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. Always insert
all four batteries 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 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
IMPORTANT: Make sure sensor is fully inserted for proper
operation. The detector will stay in warm-up mode and the on/off
switch will become inoperative if the sensor becomes loose or is
not fully inserted.
