RD300-EU-EN V1.1 12/13
4
Operation
1.
Power
Button:
Press
and
hold
the
power
button
for
2
seconds
to
turn
power
ON.
All
LEDs
will
light
and
the
start
‐
up
tone
will
sound.
Press
and
hold
power
button
for
2
seconds
to
turn
off
the
meter.
Check
the
battery
if
the
meter
does
not
switch
ON.
2.
Warm
‐
Up:
The
detector
will
automatically
start
heating
the
sensor
after
power
‐
on.
During
the
90
second
warm
‐
up,
the
Leak
Level
LEDs
and
Power
LED
will
be
lit
in
cyclic
fashion
and
the
meter.
After
the
warm
‐
up,
the
audible
tone
will
sound
and
the
Power
LED
will
remain
lit.
At
this
time
the
detector
is
ready
to
find
leaks.
3.
Sensitivity
Range
Button:
Press
the
Sensitivity
Range
button
to
change
sensitivity
levels.
The
High,
medium,
or
low
LED
will
light
depending
upon
the
user’s
selection.
The
detector
will
automatically
default
to
the
previous
sensitivity
level
after
warm
‐
up.
4.
Reset
Button:
Press
the
'R'
button
once
to
reset
the
meter;
the
reset
LED
will
flash
once.
5.
Mute
button:
Press
the
Mute
button
to
toggle
the
audio
on
and
off.
The
mute
LED
is
on
when
the
audio
is
switched
OFF
(muted).
6.
Tip
Work
Light
LED
Button:
Press
tip
light
LED
button
to
switch
the
probe
tip
work
light
ON
or
OFF.
7. Pass
the
sensor
tip
near
the
potential
source
of
leak
and
gage
the
meter’s
response
by
observing
the
color
coded
LEDs.
Green
LEDs
represent
the
absence
of
a
leak
or
a
very
small
leak,
yellow
LEDs
represent
a
moderate
leak,
and
red
LEDs
represent
the
detection
of
a
large
leak.
Probe
and
LED
Work
Light
Replacement
To
replace
the
3V
LED
work
light
or
the
sensor
please
refer
to
the
diagram
below.
Please
switch
off
the
detector
before
removing
sensor.
Diode
sensor
tip
‐
part
number
RD300
‐
S.
LED
work
light
‐
part
number
RD300
‐
L.
Notes:
1.
The
life
of
the
sensor
is
1
year
under
normal
use;
if
a
sensor
is
exposed
to
a
100
ppm
refrigerant,
the
sensitivity
characteristics
of
the
sensor
may
be
affected.
2.
Make
sure
there
are
no
water
droplets
or
dust
on
the
surface
of
the
sensor.
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