Rain Bird® Algae Control System™ (ACS)
• Owner’s Manual
SAVE THESE INSTRUCTIONS
4
how to determine where to place the device
The Rain Bird
®
Algae Control device emits directional ultrasonic waves
that “fan out” at approximately 180° from the front of the transducer
(See Figure 1) . It is important to install your device to provide the
optimal exposure of the ultrasonic waves to the body of water you are
treating . You should position the unit in a minimum of 2’ of water, close
to the edge of the water to minimize the area behind the unit that will
not receive the ultrasonic waves .
Large installations and certain shapes of ponds or lakes may require
installation of more than one device .
Multiple devices can be installed at
opposite sides of a lake or pond or
attached together pointing in different
directions, depending on your site
requirements (See Figure 2) .
The Rain Bird device, like all ultrasonic
devices, is a “line of sight” technology .
Ultrasonic sound waves will not go
around corners or navigate around
islands that may be in your body of
water . Ultrasonic sound waves reflect or
bounce off of hard surroundings, such as
concrete, rip-rap, and large rocks, islands,
as well as submerged obstructions such
as sandbars and weirs . Even thick weeds
can block or degrade the signal strength .
(See Figures 3 and 4) .
Make sure that the placement of the
device takes into account any potential
reductions in the water level . You must
have a minimum of 2’ of water at all times .
(See Figure 5)
Need help?
For FREE placement assistance, please
contact your Rain Bird dealer or Rain Bird
Customer Service at 520-741-6100 . Make
sure that you have a site-plan which
includes accurate dimensions, the
shape configurations of your water body,
and identifies and locates any submerged
obstructions on your plans .
4 ft
2 ft
4 ft
2 ft
Island
Island
Placement
figure 1
figure 2
figure 5
figure 4
figure 3
Obstructions such as islands can block
the ultrasonic signal.
Pond completely treated by two
Rain Bird
®
ultrasonic units
area ultrasonic
waves can not
reach
water level has dropped but there
is still 2’ of water under unit.
1 unit in small pond
2 units in large pond
Pond completely treated by
two Rain Bird
®
ultrasonic units
Submerged obstructions such as sandbar
and weirs can block the ultrasonic signal.
area ultrasonic waves
can not reach
