Hunter Institutional Series Manuale utente

1940 Diamond Street • San Marcos, California 92069 P/N 700144 LIT-144 1/04

www.HunterIndustries.com

Institutional Series™ I-40/41/42/43

Gear-Driven Sprinklers

ARC ADJUSTMENTS

All I-40/41 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 counterclockwise to left stop to

complete any interrupted rotation cycle.

(Fig. 1).

2. Rotate the nozzle turret clockwise to 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 (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°.

3. Adjust to any arc between 40° and 360°.

4. Wrench will stop turning, or there will be a

ratcheting noise, when the maximum arc

(360°) is reached.

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 40° and 360°.

4. Wrench will stop turning, or there will be

a ratcheting noise, when the minimum arc

(40°) is reached.

Fig. 1 Fig. 2

Radius Adjustment

Insert the hex end of the Hunter wrench into the

nozzle-retainer/range-adjustment screw (Figs.

2 & 3). Turn the screw clockwise into the stream

of water to decrease the radius, or counter-

clockwise 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 briey turning on

the water.

3. Discard nozzle if removed with pliers.

Slip the desired nozzle into the nozzle

socket. Note that the socket is angled up

25° (see Fig. 4). Tighten the nozzle-retainer/

range-adjustment screw.

Nozzle

Retainer/

Range

Adjustment

Screw

Arc Adjustment

Socket

Fig. 3

Lift Up

Socket

Indicates

VStat®

Self-

Adjusting

Stator

Recess

for Nozzle

ID Button

Specific

Model

36S

I40

I-40

ADS

Fig. 4

Water

flow

Arc Adjustment

Direction

I-40 Nozzle Performance Data

Pressure Radius Flow Precip in/hr

Nozzle PSI ft. GPM

45'

46'

7.0

8.0

8.5

0.67

0.73

0.77

0.84

0.89

50'

51'

52'

53'

10.2

11.1

12.1

13.0

0.79

0.82

0.86

0.89

0.91

0.95

0.99

1.03

51'

53'

55'

56'

11.0

12.3

13.1

13.9

0.81

0.84

0.83

0.85

0.94

0.97

0.96

0.99

56'

57'

59'

61'

13.5

15.1

16.1

17.5

0.83

0.89

0.91

0.96

1.03

1.05

63'

65'

66'

67'

20.0

21.8

23.4

24.9

0.97

0.99

1.03

1.07

1.12

1.15

1.19

1.23

66'

68'

69'

70'

22.7

24.7

26.4

28.2

1.00

1.03

1.07

1.11

1.16

1.19

1.23

1.28

Note: All precipitation rates are calculated for 180 degree operation.

For the precipitation rate for a 360 degree sprinkler, divide by 2.

I-41 Nozzle Performance Data – Metric

Nozzle

Pressure

Bars kPa

Radius

Flow

m3/hr l/min

Precip mm/hr

2.8

3.4

4.1

275

344

413

13.7

14.0

1.59

1.82

1.93

26.5

30.3

32.2

3.4

4.1

4.8

5.5

344

413

482

551

15.2

15.5

15.8

16.2

2.32

2.52

2.75

2.95

38.6

42.0

45.8

49.2

3.4

4.1

4.8

5.5

344

413

482

551

15.5

16.2

16.8

17.1

2.50

2.79

2.98

3.16

41.6

46.6

49.6

52.6

3.4

4.1

4.8

5.5

344

413

482

551

17.1

17.4

18.0

18.6

3.07

3.43

3.66

3.97

51.1

57.2

60.9

66.2

4.1

4.8

5.5

6.2

413

482

551

620

19.2

19.8

20.1

20.4

4.54

4.95

5.31

5.66

75.7

82.5

88.6

94.2

4.1

4.8

5.5

6.2

413

482

551

620

20.1

20.7

21.0

21.3

5.16

5.61

6.00

6.40

85.9

93.5

99.9

106.7

Note: All precipitation rates are calculated for 180 degree operation.

For the precipitation rate for a 360 degree sprinkler, divide by 2.

I-42 Nozzle Performance Data

Pressure Radius Flow Precip in/hr

Nozzle PSI ft. GPM

41'

42'

7.0

8.0

8.5

0.80

0.87

0.93

1.01

1.07

44'

45'

46'

10.2

11.1

12.1

13.0

1.01

1.10

1.15

1.18

1.17

1.27

1.33

1.37

46'

47'

49'

50'

11.0

12.3

13.1

13.9

1.00

1.07

1.05

1.07

1.16

1.24

1.21

1.24

51'

52'

53'

13.5

15.1

16.1

17.5

1.00

1.07

1.15

1.20

1.15

1.24

1.32

1.38

58'

60'

20.0

21.8

23.4

24.9

1.14

1.25

1.33

1.32

1.44

1.54

60'

62'

64'

65'

22.7

24.7

26.4

28.2

1.21

1.24

1.28

1.40

1.43

1.48

Note: All precipitation rates are calculated for 180 degree operation.

For the precipitation rate for a 360 degree sprinkler, divide by 2.

I-43 Nozzle Performance Data – Metric

Nozzle

Pressure

Bars kPa

Radius

Flow

m3/hr l/min

Precip mm/hr

2.8

3.4

4.1

275

344

413

12.5

12.8

1.59

1.82

1.93

26.5

30.3

32.2

3.4

4.1

4.8

5.5

344

413

482

551

13.4

13.7

14.0

2.32

2.52

2.75

2.95

38.6

42.0

45.8

49.2

3.4

4.1

4.8

5.5

344

413

482

551

14.0

14.3

14.9

15.2

2.50

2.79

2.98

3.16

41.6

46.6

49.6

52.6

3.4

4.1

4.8

5.5

344

413

482

551

15.5

15.9

16.2

3.07

3.43

3.66

3.97

51.1

57.2

60.9

66.2

4.1

4.8

5.5

6.2

413

482

551

620

17.7

18.3

4.54

4.95

5.31

5.66

75.7

82.5

88.6

94.2

4.1

4.8

5.5

6.2

413

482

551

620

18.3

18.9

19.5

19.8

5.16

5.61

6.00

6.40

85.9

93.5

99.9

106.7

Note: All precipitation rates are calculated for 180 degree operation.

For the precipitation rate for a 360 degree sprinkler, divide by 2.

Each nozzle can be identified by

the number of raised ridges on the

inside surface of the nozzle.

Example: 2 ridges = # 42 nozzle

I-40/41 = 3 minutes (approx.)

I-42/43 = 1 minute (approx.)

CORRECT INSTALLATION

Each nozzle can be identified by

the number of raised ridges on the

inside surface of the nozzle.

Example: 2 ridges = # 42 nozzle

I-40/41 = 3 minutes (approx.)

I-42/43 = 1 minute (approx.)

IDENTIFYING

NOZZLE NUMBERS

Each nozzle can be identified by

the number of raised ridges on the

inside surface of the nozzle.

Example: 2 ridges = # 42 nozzle

I-40/41 = 3 minutes (approx.)

I-42/43 = 1 minute (approx.)

FULL CIRCLE

ROTATION SPEED

Data represent test results in zero

wind. Adjust for local conditions.

Radius may be reduced up to 25% with

adjustment screw (this may alter the

uniformity of the spray pattern).

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