I-10 and I-20 Ultra Rotary Sprinkler
Instructions
Arc Adjustment
The I-20 Ultra pop-up sprinkler
should be installed at finished grade as shown in the illustration (Fig.
1).
Arc Adjustments
Adjustable heads are preset to
approximately 180º. Sprinklers may be adjusted with water on or off. It is
recommended that initial adjustments be made before installation.
- Using the palm of your hand,
rotate the nozzle turret counterclockwise to the left stop to complete
any interrupted rotation cycle (Fig. 2).
- Rotate the nozzle turret
clockwise to the right stop. This is the fixed side of the arc. The
nozzle turret must be held in this position for arc adjustments. The
right stop does not change.
To Increase the Arc:
- Insert the plastic key end of
the Hunter wrench (click
here to purchase) into the adjustment socket (Fig. 3 & 4).
- While holding the nozzle
turret at the right stop, turn the wrench clockwise. Each full 360º turn
of the wrench will increase the arc 90º.
- Adjust to any arc between 40º
and 360º (Fig. 5).
- The wrench will stop turning,
or there will be a ratcheting noise, when the maximum arc of 360º (full
circle) has been reached.
To Decrease the Arc:
- Insert the plastic key end of
the Hunter wrench into the adjustment socket (Fig. 3 & 4).
- While holding the nozzle
turret at the right stop, turn the wrench counterclockwise. Each full
360º turn of the wrench will decrease the arc 90º.
- Adjust to any arc between 40º
and 360º (Fig. 5).
- The wrench will stop turning,
or there will be a ratcheting noise, when the minimum arc of 40º has
been reached.
Radius / Distance of Throw
Insert the steel hex end of the Hunter
wrench into the radius adjustment screw (Fig. 6). Turn the screw clockwise
(into the stream of water) to decrease the radius, or counterclockwise to
increase the radius. Radius can be reduced up to 25%.
Caution:
Turning the adjustment screw clockwise more than five full turns may
result in a lost radius adjustment screw.
Precipitation Rate Adjustment
If you have excessively wet or dry areas,
you can change the nozzle in the sprinkler to increase or decrease the
precipitation rate. For dry areas, install a larger nozzle. For wet areas,
install a smaller nozzle.
Nozzle Installation
- Insert the plastic key end of
the Hunter wrench into the lifting socket of the sprinkler and turn 90º.
Pull the riser up to gain access to the nozzle socket (Fig. 8).
- Using the hex key of the
Hunter wrench, turn the radius adjustment screw (Fig. 6)
counterclockwise to be sure it is not blocking the nozzle socket
opening. If a nozzle is already installed, it can be removed by backing
out the adjustment screw and turning on the water, or by pulling outward
on the nozzle removal post with a pair of needle-nosed pliers.
- Slip the desired nozzle into
the nozzle socket (Fig. 7). Note that the socket is angled up 25º. Then
tighten the nozzle range screw. The triangle on the rubber cover will
always indicate the location of the nozzle and direction of water flow
when the sprinkler is retracted.
Aligning the Right (Fixed) Side of Arc
If the right side of the arc is not
properly aligned, the results may be a wet walkway or a dry turf area. The
right side arc can easily be realigned. One way to realign the right stop
is to turn the whole sprinkler body assembly and the fitting below it,
left or right to the desired position. This may require temporary removal
of the soil around the sprinkler to allow you to grip the sprinkler
housing.
Another way to reset the right arc is to
unscrew the body cap counterclockwise and remove the internal assembly
from the body. Once removed, rotate the nozzle turret to the right stop,
screw the internal assembly back into the body with the nozzle aligned to
the right side of the area you want irrigated (Fig. 9). At this point you
have realigned the right arc stop, and you can adjust the left arc to an
appropriate setting.
Note: It is not necessary to dig up and
remove the whole sprinkler to realign the right arc.
Turning Flow On or Off
Insert the plastic key end of the Hunter
wrench into the FloStop® adjustment socket (Fig. 3 & 10). Turn wrench
clockwise to decrease or shut off the flow. Turn the wrench
counterclockwise to increase the flow.
