Hunter Professional Series PGP - User Manual


The PGP pop-up sprinkler should be
installed at nished grade as shown
in the illustration (Fig. 1).

Adjustable heads are preset to
approximately 180˚. Sprinklers may
be adjusted with water on or off. It is
recommended that initial adjustments be
made before installation.
1. Using the palm of your hand, rotate the
nozzle turret counterclockwise to the
left stop to complete any interrupted
rotation cycle (Fig. 2).
2. 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 arc adjustments.
The right stop does not change.

1. Insert the plastic key end of the Hunter
wrench into the adjustment socket (Fig. 3
& 4).
2. While holding the nozzle turret at the right
stop, turn the wrench clockwise. Each full
360˚ turn of the wrench will increase the
arc 90˚.
3. Adjust to any arc between 40˚ and 360˚
(Fig. 5).
4. The wrench will stop turning, or there will be a ratcheting noise, when the
maximum arc of 360˚ (full circle) has been reached.

1. Insert the plastic key end of the Hunter wrench into the adjustment socket
(Fig. 3 & 4).
2. While holding the nozzle turret at the right stop, turn the wrench counter
-
clockwise. Each full 360˚ turn of the wrench will decrease the arc 90˚.
3. Adjust to any arc between 40˚ and 360˚ (Fig. 5).
4. The wrench will stop turning, or there will be a ratcheting noise, when the
minimum arc of 40˚ has been reached.

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.

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.
Gear-Driven Sprinklers




Fig. 1
Fig. 2
Fig. 4
Decrease Arc
Increase Arc
Minimum
Arc
Maximum
Arc
40°
360°
Fig. 5
Fig. 6
PG
P
Plastic Key End
Steel Hex End
Fig.7
It is not necessary to disassemble the sprinkler to make adjustments.

1. Insert the plastic key end of the Hunter wrench into the
lifting socket of the sprinkler and turn 90˚. Pull the riser
up to gain access to the nozzle
socket (Fig. 8).
2. 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
“ears” with a pair of needle-
nosed pliers.
3. Slip the desired nozzle into the
nozzle socket (Fig. 7). Note that
the socket is angled up 25˚. The
“ears” should be adjusted so that
the nozzle range screw threads
directly down between them.
Then tighten the nozzle range
screw. The raised bump with
an arrow on the rubber cover will always indicate the
location of the nozzle and direction of water ow when
the sprinkler is retracted.

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 tting
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.

It is not necessary to dig up and remove the
whole sprinkler to realign the right arc.
  © 2007 Hunter Industries Incorporated
www.HunterIndustries.com P/N 700054 LIT-054 5/07
PGP
Fig. 8

Summary

PGP Installation and Adjustments

Arc Adjustments

Adjusting the arc of the pop-up sprinkler head.

Increase or Decrease Arc

Steps to increase or decrease the sprinkler's watering arc.

Nozzle Installation

Nozzle Installation Procedure

Steps for installing a new nozzle into the sprinkler.

Arc Alignment and Radius Adjustment

Aligning Fixed Arc Side

How to realign the fixed (right) arc stop of the sprinkler.

Radius; Distance Adjustment

Adjusting the water throw distance using the radius adjustment screw.

Precipitation Rate Adjustment

Adjusting Precipitation Rate

Changing nozzles to adjust the sprinkler's precipitation rate.

Overview

1. Function Description
2. Usage Features
3. Installation
4. Arc Adjustments
5. Nozzle Installation
6. Radius / Distance of Throw Adjustment
7. Precipitation Rate Adjustment
8. Maintenance Features
9. Aligning the Right (Fixed) Side of Arc
10. General Maintenance

The Hunter PGP, PGS, and PGH Gear-Driven Sprinklers are designed for irrigation, offering adjustable arc and radius settings to suit various landscape needs. These sprinklers are installed at finished grade, ensuring a flush appearance with the surrounding terrain.

Function Description

The primary function of these sprinklers is to distribute water over a specified area. They are gear-driven, which means they use an internal gearing mechanism to rotate the nozzle turret, providing a consistent and reliable spray pattern. The pop-up design ensures that the sprinkler head retracts into the ground when not in use, protecting it from damage and maintaining the aesthetic appeal of the landscape.

Usage Features

Installation:

The sprinkler should be installed at finished grade, as indicated by the provided illustration. This ensures proper operation and integration with the landscape.

Arc Adjustments:

The sprinklers come preset to approximately 180 degrees. Adjustments can be made with the water on or off, though initial adjustments are recommended before installation.

1. Finding the Fixed Side: To begin, rotate the nozzle turret counterclockwise with your palm until it reaches the left stop, completing any interrupted rotation cycle. Then, rotate the nozzle turret clockwise to the right stop. This right stop marks the fixed side of the arc and must be held in this position for all arc adjustments. The right stop itself does not change.
2. Increasing the Arc: To increase the arc, insert the plastic key end of the Hunter wrench into the adjustment socket. While holding the nozzle turret at the right stop, turn the wrench clockwise. Each full 360-degree turn of the wrench increases the arc by 90 degrees. The arc can be adjusted to any angle between 40 and 360 degrees. The wrench will stop turning, or a ratcheting noise will be heard, once the maximum arc of 360 degrees (full circle) is reached.
3. Decreasing the Arc: To decrease the arc, insert the plastic key end of the Hunter wrench into the adjustment socket. While holding the nozzle turret at the right stop, turn the wrench counter-clockwise. Each full 360-degree turn of the wrench decreases the arc by 90 degrees. The arc can be adjusted to any angle between 40 and 360 degrees. The wrench will stop turning, or a ratcheting noise will be heard, once the minimum arc of 40 degrees is reached.

Nozzle Installation:

1. Accessing the Nozzle Socket: Insert the plastic key end of the Hunter wrench into the lifting socket of the sprinkler and turn it 90 degrees. Pull the riser up to gain access to the nozzle socket.
2. Preparing for Nozzle Insertion: Use the hex key of the Hunter wrench to turn the radius adjustment screw counterclockwise. This ensures 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 gently pulling outward on the nozzle "ears" with a pair of needle-nosed pliers.
3. Inserting the Nozzle: Slip the desired nozzle into the nozzle socket. Note that the socket is angled up 25 degrees. The "ears" on the nozzle should be adjusted so that the nozzle range screw threads directly down between them. Then, tighten the nozzle range screw. A raised bump with an arrow on the rubber cover indicates the location of the nozzle and the direction of water flow when the sprinkler is retracted.

Radius / Distance of Throw Adjustment:

To adjust the radius or distance of throw, insert the steel hex end of the Hunter wrench into the radius adjustment screw. Turning the screw clockwise (into the stream of water) will decrease the radius, while turning it counterclockwise will increase the radius. The radius can be reduced by 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 certain areas are consistently too wet or too dry, the nozzle in the sprinkler can be changed to adjust the precipitation rate. For dry areas, a larger nozzle should be installed, and for wet areas, a smaller nozzle.

Maintenance Features

Aligning the Right (Fixed) Side of Arc:

Proper alignment of the right side of the arc is crucial to avoid wet walkways or dry turf areas. The right side arc can be easily realigned using a couple of methods:

1. Rotating the Sprinkler Body: The entire sprinkler body assembly and the fitting below it can be turned left or right to the desired position. This might require temporarily removing some soil around the sprinkler to grip the housing.
2. Adjusting the Internal Assembly: Unscrew the body cap counterclockwise and remove the internal assembly from the body. Once removed, rotate the nozzle turret to the right stop. Then, screw the internal assembly back into the body with the nozzle aligned to the right side of the area you want irrigated. This process realigns the right arc stop, and the left arc can then be adjusted to an appropriate setting.

• Note: It is not necessary to dig up and remove the entire sprinkler to realign the right arc.

General Maintenance:

The design of these sprinklers allows for adjustments without disassembling the sprinkler, simplifying maintenance tasks. Regular checks of the arc and radius settings can help maintain optimal irrigation performance. If the sprinkler is not performing as expected, reviewing the adjustment procedures and nozzle selection can help troubleshoot common issues.

Hunter Professional Series PGP Specifications