Hunter PGJ - User Manual

Arc Adjustment
(All PGJ adjustable heads are PRESET to
approximately 40°)
1. Rotate the nozzle turret counterclockwise
to the left stop.
2. Now, rotate the nozzle turret clockwise to
the right stop. This is the xed 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 on top of the
sprinkler.
2. While holding the nozzle turret at the right
stop, turn the wrench clockwise.
3. Wrench will stop turning when adjusted to
the maximum arc (360°). Do not go past
this stop.
4. Adjust to any arc between 40°-360°.
To decrease arc:
1. Insert the key end of the Hunter wrench
into the adjustment socket.
2. While holding the nozzle turret at the right
stop, turn the wrench counterclockwise.
3. Wrench will stop turning when adjusted to
the minimum arc (40°). Do not go past this
stop.
4. Adjust to any arc between 40°-360°.
Radius Adjustment
To decrease radius:
1. Turn nozzle-retainer/range-adjustment
screw clockwise using hex end of Hunter
tool or slot screwdriver. This can reduce
radius up to 25%.
2. If an even smaller radius is desired, install
a smaller nozzle. This will affect precipita-
tion rate.
To increase radius:
1. Turn nozzle-retainer/range-adjustment
screw counterclockwise using hex end of
Hunter tool or slot screwdriver.
2. If larger radius is desired, install larger
nozzle. This will affect precipitation rate.
Precipitation Rate Adjustment
To increase precipitation:
1. Remove existing nozzle.
2. Replace with larger size.
3. Adjust radius.
To decrease precipitation:
1. Remove existing nozzle.
2. Replace with smaller size.
3. Adjust radius.
Note: Undamaged nozzles are reusable.
PGJ
Gear Driven Sprinklers
Hunter Industries Incorporated • The Irrigation Innovators © 2004 Hunter Industries Incorporated
www.HunterIndustries.com P/N 700974 LIT-379 3/04
Fig. 3
Nozzle/Range
Adjustment
Screw
Lifting
Socket
Adjustment
Socket
Model
Identification
®
Fig.
Radius Reduction Screw
cke
®
PGJ
Nozzle
ID. Tab
Adjustmen
t
Radius Reduction Screw
Plus+
Minus-
Arc Adjustment
Pull-up
Socket
V
M
A
D
E
I
N
U
S
A
Plus+ Minus-- Arc Adjustment
Pull-up
Socket

Summary

Arc Adjustment

Adjusting Sprinkler Arc

Instructions on how to increase or decrease the spray arc of the sprinkler head.

Radius Adjustment

Adjusting Sprinkler Radius

Instructions on how to decrease or increase the sprinkler spray radius.

Precipitation Rate Adjustment

Adjusting Precipitation Rate

Steps to adjust precipitation rate by changing nozzle size and radius.

Nozzle Installation

Filter Screen and Installation Height

Guidance on removing the filter screen and setting the proper installation height.

Overview

1. Arc Adjustment
2. Radius Adjustment
3. Precipitation Rate Adjustment
4. Nozzle Installation
5. Maintenance Features

The Hunter PGJ Gear Driven Sprinkler is a versatile irrigation device designed for efficient water distribution in various landscape settings. It features a gear-driven mechanism, ensuring smooth and consistent rotation for optimal coverage. The sprinkler is equipped with an arc adjustment system, allowing users to precisely control the spray pattern from a minimum of 40 degrees to a full 360 degrees. This flexibility makes it suitable for irrigating irregularly shaped areas as well as full circles.

Arc Adjustment

The arc adjustment process is straightforward and user-friendly. Each PGJ adjustable head comes pre-set to approximately 40 degrees. To begin, the nozzle turret should be rotated counterclockwise to its left stop. Following this, it is rotated clockwise to its right stop, which establishes the fixed side of the arc. This fixed position must be maintained throughout all subsequent arc adjustments.

To increase the arc, a Hunter wrench is inserted into the adjustment socket located on top of the sprinkler. While holding the nozzle turret at the right stop, the wrench is turned clockwise. The wrench will automatically stop turning once the maximum arc of 360 degrees is reached, preventing over-adjustment. Users can set any desired arc between 40 and 360 degrees.

Conversely, to decrease the arc, the Hunter wrench is inserted into the adjustment socket, and while holding the nozzle turret at the right stop, the wrench is turned counterclockwise. The wrench will stop turning when the minimum arc of 40 degrees is reached. This ensures that the arc does not go below the specified minimum.

Radius Adjustment

The PGJ sprinkler also offers radius adjustment capabilities, allowing users to fine-tune the throw distance of the water.

To decrease the radius, the nozzle-retainer/range-adjustment screw is turned clockwise using the hex end of a Hunter tool or a slot screwdriver. This action can reduce the radius by up to 25%. If an even smaller radius is required, a smaller nozzle can be installed, though this will impact the precipitation rate.

To increase the radius, the nozzle-retainer/range-adjustment screw is turned counterclockwise using the hex end of a Hunter tool or a slot screwdriver. For a larger radius, a larger nozzle can be installed, which will also affect the precipitation rate.

Precipitation Rate Adjustment

The precipitation rate, or the amount of water applied over a given area in a specific time, can also be adjusted with the PGJ sprinkler.

To increase the precipitation rate, the existing nozzle is removed and replaced with a larger size. After installing the new nozzle, the radius should be adjusted as needed.

To decrease the precipitation rate, the existing nozzle is removed and replaced with a smaller size. Following the nozzle change, the radius should be adjusted accordingly. It is important to note that undamaged nozzles are reusable, promoting sustainability and cost-effectiveness.

Nozzle Installation

Installing a nozzle in the PGJ sprinkler is a simple process. First, the plastic key end of the Hunter wrench is inserted into the lifting socket of the sprinkler and turned 90 degrees. This action pulls the riser up, providing access to the nozzle socket.

Next, the hex key end of the Hunter wrench is used to turn the radius adjustment screw counterclockwise. This ensures that the screw is not obstructing the nozzle socket opening. If a nozzle is already present, it can be removed by backing out the adjustment screw and turning on the water, or by gently prying it outward from under the nozzle.

Once the socket is clear, the desired nozzle is slipped into the nozzle socket. The socket is angled up 25 degrees, which ensures that the nozzle range screw threads directly down. After the nozzle is in place, the nozzle range screw is tightened. The arrow on the rubber cover of the sprinkler consistently indicates the location of the nozzle and the direction of water flow when the sprinkler is retracted, aiding in proper orientation and setup.

Maintenance Features

The PGJ sprinkler is designed for ease of maintenance. The filter screen, which prevents debris from entering the nozzle and affecting performance, can be easily removed for cleaning. This feature helps maintain optimal water flow and extends the lifespan of the sprinkler. Regular cleaning of the filter screen is recommended to ensure consistent and efficient operation.

Proper installation height is crucial for the optimal performance of the PGJ sprinkler. The design ensures that when properly installed, the sprinkler head sits flush with the ground, minimizing tripping hazards and maintaining the aesthetic appeal of the landscape.

In summary, the Hunter PGJ Gear Driven Sprinkler is a robust and adaptable irrigation solution, offering precise control over arc, radius, and precipitation rate. Its user-friendly adjustment mechanisms and straightforward maintenance procedures make it an excellent choice for a wide range of residential and commercial irrigation needs.

Hunter PGJ Specifications