Sprinkler irrigation. HUNTER I31 PLUS SPRINKLER

HUNTER I-31 PLUS SPRINKLER
HOME > PRODUCT INDEX > SPRINKLERS > HUNTER I-31 PLUS SPRINKLER

The I-31 PLUS is a rotary sprinkler for medium and large zones, as the commercial and recreational sites. Extra beefy construction, designed for a better ground fixation and an intensive use. With his double-nozzle system, it makes an homogeneous distribution of water in short and long radius.

	ProTech™ safety system, the small exposed heavy-duty rubber cover and boot keeps playing areas safe.
	Heavy-duty ribbed cap and body stand up to heavy traffic, easy servicing.
	Water-lubricated gear drive.
	Patented VStat® self-adjusting stator. No stator rings required, drives with more power and adds years to sprinkler life
	Drain check valve for up to 3 meters elevation change. Saves water, reduces liability.
	Ratio: 13,5 to 21,9 m. with the standard nozzles (see table).
	Pop-up: 9 cm.
	Arc adjustment: 40º to 360º. in ADV, the 36V is full circle.
	Standard nozzle trajectory: approximately 25º.
	I
	Connection: 1" bsp female inlet.
	Are included the 5 nozzles of more use, interchangeable and codified by colors: orange, light green, grey, dark brown and dark blue (indicated with * in the table).

Position of installation in land	Rubber cover of the sprinkler
	fig.1

NOZZLE INSTALLATION AND ADJUSTMENT OF RADIUS.

Up the turret to have access to the nozzle with the hand or insert the Hunter wrench in the hole, turning 90º and throwing upwards.
Insert the key end of the Hunter wrench into the lifting socket of a pop-up sprinkler and rotate wrench 90º. Pull the riser up to gain access to the nozzle opening in rotating turret.
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 with pliers by grabbing the tab in the center and pulling out.
Slip the desired nozzle into the nozzle socket. Note that the socket is angled up 25º (Fig. 4). Make sure that nozzle is fully seated and does not protrude from housing. Tighten the nozzle retainer/range-adjustment screw.
To increase radius turn left the screw, to decrease it turn right.
If with the screw adjustment you cannot obtain the desired radius, you must use another nozzle: if you want a higher radius, install a bigger nozzle (you will increase too the precipitation rate); on the same way, for a lower radius, install a smaller nozzle, so the precipitation rate will be reduced.

ARC ADJUSTMENT

The arc adjustable heads are preset approximately 180º from factory. Even the heads can be adjusted when they are working, we recommend that the first adjusts be made before installation.

fig.2

Using your hand (pic. 2), rotate the nozzle turret to the left till his stop, completing in this way the head rotation.
Now turn right to the stop. THIS IS THE FIXED SIDE OF THE ARC.
Keep this position for any arc adjustment. The right stop does not change.
Insert the Hunter wrench by the key-end (or an Allen key of the same measure) into the arc adjustment socket (see pic.1/pic.3). While holding the nozzle turret at the right stop, turn right the wrench to increase the arc or turn left to decrease it. With every complete turn of the wrench, the arc will vary on 90º. When you reach the maximum or minimum arc of the nozzle, the wrench won't turn and you could hear an indicative sound.

fig.3

ALIGNMENT OF THE RIGHT SIDE (FIXED) OF THE IRRIGATION SECTOR.

If the right side of the irrigation sector were not well aligned, we would have a zone wet and another dry. The adjustment can be made of two ways:

Turnings left or right the body of the sprinkler and the down accessories. This operation could require remove the land around the sprinkler to move his body.
Unscrewing the topside counterclockwise and removing the inside part of the sprinkler. Turn right the head of the nozzle, check the inside of the sprinkler aligning the nozzle over the right side of the zone you wish to irrigate (pic.4) and screw again the inside part keeping the chosen position. The right side is already aligned.

fig.4

	Performance table (Push on the table to enlarge)