Hunter X-Core Owners Manual And Programming Instructions page 67

ARC ADJUSTMENTS
(NON-OPPOSING NOZZLE MODEL)
All I-40 group adjustable heads are preset to approximately 180°.
Sprinklers may be adjusted with water on or off. It is recommended
that initial adjustment be made before installation.
1. Using the palm of your hand, rotate the nozzle turret counter-
clockwise to left stop to complete any interrupted rotation cycle
(Fig. 1).
2. Rotate the nozzle turret clockwise to right stop. This is the fixed
side of the arc. The nozzle turret must be held in this position
for all arc adjustments.
To Increase Arc
1. Insert the key end of the Hunter wrench into the adjustment
socket (Figs. 2 & 3).
2. While holding the nozzle turret at the right stop, turn the
wrench clockwise. Each 360° turn of the wrench increases the
arc 45°.
Fig. 1
3. Adjust to any arc between 50° and 360°.
4. Wrench will stop turning, or there will be a ratcheting noise,
when the maximum arc (360°) is reached.
5. When set to 360°, the sprinkler will rotate continually
counterclockwise.
To Decrease Arc
1. Insert the key end of the Hunter wrench into the adjustment
socket (Figs. 2 & 3).
2. While holding the nozzle turret at the right stop, turn the
wrench counterclockwise. Each 360° turn of the wrench
decreases the arc 45°.
3. Adjust to any arc between 50° and 360°.
4. Wrench will stop turning, or there will be a ratcheting noise,
when the minimum arc (50°) is reached.
Radius Adjustment
Insert the hex end of the Hunter wrench into the nozzle-retainer/
range-adjustment screw (Figs. 2 & 3). Turn the screw clockwise
Hunter Industries Incorporated • The Irrigation Innovators
www.hunterindustries.com
™
Institutional Series
Fig. 1
Fig. 2
into the stream of water to decrease the radius, or counterclockwise
to increase the radius.
Precipitation Rate Adjustment
Where excessively wet or dry areas are a problem, the
precipitation rate may be adjusted. Simply replace the existing
nozzle with a larger one to increase or a smaller one to decrease
the rate of precipitation.
Nozzle Installation
1. Insert the key end of the Hunter wrench into the lifting socket
of a pop-up sprinkler. Pull the riser up to gain access to the
nozzle socket.
2. Using the Hunter wrench, loosen the nozzle-retainer/range-
adjustment screw. If a nozzle is already installed in the
sprinkler, it may now be removed by briefly turning on
the water.
3. Discard nozzle if removed with pliers. Slip the desired nozzle
Fig. 2
into the nozzle socket. Note that the socket is angled up 25°
(see Fig. 4). Tighten the nozzle-retainer/range-adjustment screw.
Arc Adjustment
Socket
I40
SS
Nozzle
Retainer/
Range
Adjustment
Screw
Lift Up
Socket
NON-STRIPPABLE BACKDRIVE
This sprinkler is designed with an internal device that prevents
damage to the internal gear drive if it should be turned by
Water
vandals. This important feature works when the nozzle turret
flow
is turning in either direction. This makes the sprinkler very
durable in all applications.
AUTO ARC RETURN
This sprinkler is designed with an internal device that re-aligns
the arc if it is turned by vandals. This important feature works
Fig. 4
when the nozzle turret is turning in either direction. When
forced outside of the originally set arc, the sprinkler takes the
shortest path back to the pattern without going completely
around. This saves the non-irrigated areas from getting wet!
Always a good thing!
I-40
Gear-Driven Sprinklers
Arc Adjustment
Socket
I40
Nozzle
Retainer/
Range
Adjustment
Screw
Lift Up
Socket
Arc Adjustment
Direction
Fig. 3
© 2011 Hunter Industries Incorporated
P/N 700593 LIT-470 G
SS
Fi
Water
flow
Fig. 4
12/11