ADJUSTMENTS
AND
OPERATION
When
the
Rain
Sensor
activates
due
to
sufficient
rainfall
(after
rainfall
quantities
of
1/8”
thru
½”
or
more),
the
sprinkler
system
will
become
inactive
until
the
moisture
‐
absorbent
discs
inside
the
Rain
Sensor
have
dried
out.
To
adjust
it
to
the
desired
quantity
of
rainfall,
rotate
the
cap
on
the
rain
sensor
housing
to
adjust
the
range
desired
(See
Figure
3).
Figure
3
The
time
that
it
takes
the
rain
sensor
to
reset
for
normal
sprinkler
operation
after
the
rain
has
stopped
is
determined
by
weather
conditions
(wind,
sunlight,
humidity,
etc.).
These
conditions
will
determine
how
fast
the
hygroscopic
discs
will
dry
out,
the
same
conditions
your
soil
experiences.
Note
that
there
is
an
adjustment
capability
on
the
rain
sensor
that
will
slow
down
the
reset
rate.
By
turning
the
“Vent
Adjustment
Tab”
(See
Figure
4)
to
completely
or
partially
cover
the
ventilation
holes,
the
hygroscopic
discs
will
dry
more
slowly.
This
adjustment
can
compensate
for
an
“overly
sunny”
installation
location
or
peculiar
soil
conditions.
Experimenting
with
the
vent
ring
will
best
determine
the
ideal
vent
setting.
Figure4
Bypassing
the
Rain
Sensor
The
Rain
Sensor
can
be
temporarily
bypassed
or
deactivated
using
any
one
of
the
following
methods:
•
Use
the
controller’s
sensor
bypass
switch
(if
equipped).
•
Temporarily
disconnect
the
Rain
Sensor
from
the
controller’s
wiring.
