Irritrol 446PR User Manual

446PR / 446PRI

IRRIGATION CONTROLLER

INSTALLATION AND OPERATING GUIDE

FEATURES

 SIX ZONE CONTROL: Turns up to six sprinkler valves on and off

automatically in sequence.

 DUAL PROGRAMMING: Allows you to water your lawn and landscape

on separate schedules.

 EASY AT-A-GLANCE SETTINGS: Makes it simple to set watering

lengths and days.

 MULTIPLE START TIMES: Lets you water up to four times per day -

ideal for new lawns.

 EXTENDED WATERING PERIODS: Allows you to water up to 99 min-

utes a day per zone.

 PAUSE FUNCTION: Makes it easy to interrupt watering cycles for yard

activities.

 MANUAL OPERATING MODE: Allows you to water manually when an

automatic watering cycle is not in progress.

 ELECTRONIC CIRCUIT BREAKER: Prevents controller shut-down in

the case of a short circuit in a valve; diagnostic feature displays malfunc­tioning valve number for easy trouble-shooting.

 MASTER VALVE/PUMP START CONNECTION: Automatically turns a

pump or a master valve on and off. (Requires a pump start relay, Model
SR-1, if used with a pump).

TO USE YOUR NEW CONTROLLER MOST EFFECTIVELY, PLEASE
READ THIS MANUAL CAREFULLY AND REFER TO THE MANUAL IF
ANY DIFFICUL TIES ARISE.

NOTE:

trical surges caused by unstable power supply, consult your local supplier
or contractor for additional protection devices which may be required.

For areas which are vulnerable to lightning strikes, or transient elec-

2

TABLE OF CONTENTS

Controller Components . . . . . . . . . . . . . . . . . . . . . . . . . 4–5

Installation Procedures

• Selecting The Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

• Mounting The Controller . . . . . . . . . . . . . . . . . . . . . . . . . 6–7

• Connecting The Valve Wires . . . . . . . . . . . . . . . . . . . . . 7–8

• Connecting APump Start Relay Or Master Valve . . . . . . . . 8

• Connecting The Power Source (Outdoor Models) . . . . 9–10

• Connecting The Battery . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Planning Your Watering Schedule

• Guidelines For Watering . . . . . . . . . . . . . . . . . . . . . . . . . . 11

• Selecting The Right Program . . . . . . . . . . . . . . . . . . . . . . 11

• Filling In The Watering Schedule Form . . . . . . . . . . . . . . . 11

• Watering Schedule Forms . . . . . . . . . . . . . . . . . . . . . . . . 12

Programming Steps

• Setting Correct Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

• Assigning Zones To AProgram . . . . . . . . . . . . . . . . . . . . . 13

• Setting Program Start Times . . . . . . . . . . . . . . . . . . . . 14–15

• Setting Zone Run Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

• Setting Program Cycle Days . . . . . . . . . . . . . . . . . . . . . . 15

Manual And Semi-Auto Operation

• Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

• Semi-Auto Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Controller Shut-down / Circuit Breaker

• Controller Shut-Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

• Electronic Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . 17

Voltage Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Electro-Magnetic Compatibility . . . . . . . . . . . . . . . . . . . . 19

3

1

2

3

4

5

4

6

44

7

8

9

10

11

12

13

Figure 1

CONTROLLER COMPONENTS

4

CONTROLLER COMPONENTS

CLOCK - DAY NOW KEY

1

Allows you to set the current time and day

2

HOURS KEY

Allows you to set the correct hour for the current time as well as the
hour for the desired start times.

MINUTES KEY

3

Allows you to set the correct minute for the current time as well as
the minute for the desired start times.

4

START KEYS

Enable you to set the start times of each programs (two start times
for program A and two for program B).

5

CONTROLLER DISPLAY

It displays the current time or the zone number being watered with its
watering run time when a program is in progress. It also indicates
programming errors and short circuits when detected.

6

PAUSE - SEMI-AUTO KEY

Temporarily interrupts a watering cycle in progress or allows you to
start a semi-automatic watering cycle

7

ZONE MINUTES SWITCHES

Allows you to select the watering time duration for each zone from

2–99 minutes

8

PROGRAM SWITCHES
Allows you to designate each zone to program (A, B, or AB).

9

DAYS SWITCHES

Allows you to set the day interval for each watering program.

TERMINAL SCREWS

10

Terminal connections for the power source, zone 1–6, pump
start/master valve and valve common.

11

BA TTERY CONNECTOR

Connects a 9 volt battery to retain stored watering cycle programs in
case of a power failure.

12

INTERNAL TRANSFORMER (Outdoor models)

Enables the controller to connect to a 120 V a.c., 60 Hz source
(220/240 V a.c., 50 Hz source for the international units).

13

PLUG-IN TRANSFORMER (Indoor Models)

Supplied with 120 V a.c., 60 Hz.

5

INSTALLATION PROCEDURE

WARNING: All electrical components must meet applicable

national and local electrical codes including installation by
qualified personnel. These codes may require an external junction
box mounted on the transformer 1/2" nipple and a means, in the
fixed wiring, of disconnecting AC power having a contact separa­tion of at least 0.120" (3 mm) in the line and neutral poles. Ensure
the AC power source is OFF prior to connecting to the controller.
The wire used for connection to the controller must have insulation
rated at 105° C minimum.

STEP 1 : Selecting The Location

For the 446 PRI (indoor models), choose an indoor location near a standard
120 V a.c. wall outlet. Install the controller in an area protected from weath­er, such as a garage, and within 5' (1.5 m) of a grounded electrical outlet.
The 446 PR (outdoor model) can be installed almost anywhere, but avoid
exposure to direct sun or irrigation spray. The controller must be powered
by a well grounded AC circuit.

CAUTION: Do not place the controller where temperatures may
exceed 60° Centigrade (140° Fahrenheit) or on a circuit controlled by a
switch or on the same circuit with a high power user (refrigerator, air condi­tioner, garage door opener, etc.). Malfunctions may result.

STEP 2 : Mounting 446 PR Controller (Outdoor Model)

1. Mount the hanger kit (1 hanger and 1 screw) on the top rear of the con-

troller.

2. Position the controller on the wall slightly below eye level. Mark the

mounting screw location at the top of the hanger’s keyhole slot.

3. Install a #8 mounting screw into the wall at the marked location leaving

the screw head about 1/4" (6 mm) out from the wall.

4. Remove the screw from the controller’s bottom panel. Pull the panel out

to access the two bottom screw holes.

5. Hang the controller on the mounting screw while making sure the screw

head is secured at the top of the keyhole slot. Install the two bottom
mounting screws, then tighten the top keyhole screw securely.

6. Replace the lower bottom to the controller.

6

INSTALLATION PROCEDURE

Mounting 446 PRI Controller (Indoor Model)

1. Install a #8 mounting screw at eye

level on the wall, leaving the screw
head extended 1/4" (6 mm) out from
the wall.

2. Hang the controller on the mounting

screw. Make sure the screw head is
secured at the top of the keyhole slot.
See

Figure 2.

3. Install the lower mounting screws.

4. Replace the controller’s bottom panel.

STEP 3 : Connecting The Valve Wires

CAUTION:

The power transformer is protected by an electronic circuit
breaker. Do not connect a combination of valves requiring an inrush current
above 1 Amp at 24 V a.c. to one zone terminal.

1. Route valve control wires

between the valves and the
controller.
Note: An 18 AWG (0.75
mm) multi-wire cable is rec-
ommended. This cable is

24V
AC

123456

ZONES

P

C

U

O

M

M

P

M

Pump Start Relay or
Master Valve

insulated for direct burial
and color coded to simplify
installation.

2. Attach the white color-coded

wire to one of the wires from
each valve solenoid (either

Zone 3

solenoid wire can be used).
The white wire is designated
as the valve common wire.

Zone 2

(continued to the next page)

Zone 1

Figure 2

Figure 3

Wire

Connector

Grease Cap

7

INSTALLATION PROCEDURE

3. Attach a separate color-coded wire to the remaining wire from each

valve solenoid. Make a note of the wire color used for each valve and
the watering zone it controls. You will need this information when con­necting the valve wires to the controller.

4. Secure all wire splices using a twist-on wire connectors. To prevent cor-

rosion and possible short circuit, use a grease cap or similar waterproof­ing method to insulate each wire splice connection. See
on page 7.

5. Remove the controller’s bottom panel and route the valve cable into the

controller through the conduit opening at the base of the cabinet. Strip
back the wire insulation, about 1/2" (13 mm), from all cable wires to be
connected.

Note: The identification label for each of the terminal screws are located
at the backside of the controller’s bottom plastic panel.

6. Secure the valve common wire to the terminal labeled

the individual valve wires to the valve terminals labeled 1–6 in the order
you wish the valve zones to operate.

7. Replace the controller’s bottom panel and test each valve for proper

operation using the
connecting the AC power source.

STEP 4 : Connecting A Pump Start Relay Or Master Valve

When a pump relay is required to be operated by the controller, a compati­ble relay must be used. The relay coil will be connected to the PUMP termi-
nal. Refer to the Voltage Specification on page 19 of this Installation Guide
for power requirements. The relay contacts will be connected to the pump
start terminals and must be rated for use with that particular pump.

CAUTION: To prevent controller damage, ensure the relay’s current
draw does not exceed 1A. Do not connect the controller directly to the
pump starter. The pump start relay must be installed at least 5' (1.5 m)
away from the controller.

1. Route a twisted pair cable from the pump relay or the master valve into

the controller housing through the conduit opening.

2. Connect one of the wires to the

to the terminal labeled PUMP.

3. Test for proper operation after connecting the AC power source.

MAN option under the PROGRAM switches after

COMM terminal and the remaining wire

Figure 3 insert

COMM. Connect

8

INSTALLATION PROCEDURE

STEP 5 : Connecting The Power Source

The outdoor controller model has a built-in transformer which must be con­nected to a grounded AC power source. Refer to the POWER SPECIFICA-
TIONS on page 18 for the proper power requirements. Electrical conduit
and adapters are not supplied with the controller but are generally required.
Check local building codes and install conduit accordingly.

CAUTION: Before wiring the internal transformer, switch off power at
the source. Do not link two or more controllers via a common transformer or
common wire.

PR (Outdoor Model)

1. Verify that the power has been turned

off at the power source by using an
appropriate AC voltage meter.

2. For the power wire connection, install

a 3/4" (19 mm) NPT threaded conduit
to the transformer assembly nipple.
Install electrical conduit from the con-
duit body to the AC power source cir-
cuit breaker panel.

Note: Figure 4 applies to 120 V a.c.,
60 Hz models only. For international
models, connect in accordance to
local and national electrical codes.

3. Route a three wire cable through the conduit and out from the conduit

body .

4. Splice the mating wires. Connect and insulate the wires with proper size

wire connectors. See

Figure 4.

5. Close and secure the conduit cover.

6. Apply power to the controller and test each valve for proper operation

using the

MAN option under the PROGRAM switches.

Figure 4

Neutral Line

White or Blue

Hot Line

Black or Brown

Conduit Body

Ground Line

Green or

Green/Yellow

9

INSTALLATION PROCEDURE

PRI (Indoor Model)
Note:

The plug-in transformer is supplied with the 120 V a.c., 60 Hz indoor
controller models only. See page 18 for the controller’s proper power speci­fications.

CAUTION: Make sure the transformer is unplugged during installation.

1. Lift out the the controller’s bottom plastic panel.

2. Route the plug-in transformer cable into the controller through the pro-

vided conduit opening at the base of the cabinet.

3. Attach the transformer cable to the 24 V a.c. terminals. Make sure the

transformer leads do not make contact.

4. Replace the bottom panel of the controller.

5. Plug in the transformer to apply power to the controller and test each

valve for proper operation using the
switches.

STEP 6 : Connecting The Battery

1. Remove the bottom panel of the controller.

2. Connect a 9 volt alkaline battery (not supplied) to the battery connector

found inside the wiring compartment. Installing a battery enables the
controller to retain watering programs stored in the controller’s memory
during power failures. See

3. Replace the bottom panel.

CAUTION: Batteries contain hazardous materials. Always handle and
discard batteries properly in accordance with the battery manufacturer’s
recommendations.

Figure 2 on page 7.

MAN option under the PROGRAM

10

PLANNING YOUR WATERING SCHEDULE

Guidelines For Watering

There are several factors to be considered when deciding when and how
long to water. For example, the soil type (i.e. clay, loam, etc.), the part of the
landscape being watered, climate conditions and the type of sprinklers
being used. Because of these variables, we cannot provide an exact sched­ule to follow, but here are some general watering guidelines to help you get
started.

• Water early in the morning, one to two hours before sunrise. You will
have the best water pressure at this time and the water can soak into
the plant root zone while evaporation is minimal. Watering during mid­day or in the evening may cause plant damage or mildew.

• For new lawns where frequent watering is required, take advantage of
the multiple start time feature of the 446 PR/PRI controller. Each
watering program cycle can be initiated twice a day.

• If under- or over-watering signs are observed, adjust program immedi-
ately .

Select The Right Program

On the following pages are some guidelines for planning your automatic
watering programs. We recommend taking a few moments to review this
information and filling in the watering schedule form provided.

Filling In The Watering Schedule Form

It is always helpful to plan your watering schedule on paper before begin­ning the programming steps. When completed, you will have a guide to use
during programming, and a record of your watering schedule which can be
kept with the controller for future reference.

Here are the information you will need to program your controller for auto­matic operation:

•

Location - Identify the location of each valve’s watering zone number.

•

Zone Run Time - Indicate the amount of watering run time required for
each zone (2–99 minutes).

•

Watering day schedule

Identify the watering day schedule for each program (everyday, every
other day, every third day or every fourth day interval).

•

Program Start Times Indicate the time of day you wish each watering
program to start.

11

WATERING SCHEDULE FORMS

1
2
3
4
5
6

STATION

STATION RUN TIME

STATION RUN TIME

1

2

1

2

LOCATION

WATERING

DAY SCHEDULE

2nd

Every 2nd,
3rd or 4th Day

Everyday Off

3rd

PROGRAM

START TIMES

PROGRAM AWatering Schedule Form

PROGRAM B

4th

2nd

3rd

4th

Everyday Off

1
2
3
4
5
6

STATION

STATION RUN TIME

STATION RUN TIME

1

2

1

2

LOCATION

WATERING

DAY SCHEDULE

2nd

Every 2nd,
3rd or 4th Day

Everyday Off

3rd

PROGRAM

START TIMES

PROGRAM AWatering Schedule Form

PROGRAM B

4th

2nd

3rd

4th

Everyday Off

12

PROGRAMMING STEPS

STEP 1 : Setting The Correct Time

The controller’s clock features a 12-hour format where 1200P represents
12:00 p.m. (noon) and 1200A represents 12:00 a.m. (midnight). When
power is first applied, the controller automatically resets the day and time to
Day 1 and 400P.

1. Press the

2. Advance the hour digit by holding down or by pressing the
repeatedly until the correct hour and A (a.m.) or P (p.m.) is displayed.

3. Advance the minute digit by holding down or by pressing the
repeatedly until the current minute is displayed.

4. Once the current time is set, the procedure is completed. If no additional
key is pressed within 15 seconds, the controller will revert back to time
mode.

STEP 2 : Assigning Zones To AProgram

The controller provides several options that allow simple, flexible program­ming. The dual program feature provides the ability to water individual
areas of the yard on separate schedules.

A typical example of how these programs might be used would be to assign
all lawn zones to program
watering demands are generally quite different for lawns and shrubs, dual
programming enables watering days and start times to be tailored specifi­cally for each type of plant material.

1. Select each zone’s watering program by simply moving each zone’s
program switch to
bination of program A and B.

2. To disable a zone, simply move its designated zone switch into the
position.

Note: If a zone switch is placed in the AB position, the zone will start water­ing at every start time programmed in both A and B. Unused zones should
be placed in the OFF position.

Clock key to place the controller in time setting mode.

HRS key

MIN key

A and all shrub zones to program B. Since

A for program A, B for program B or AB for the com-

OFF

13

PROGRAMMING STEPS

STEP 3 : Setting Program Start Times

A program start time is the designated time when the programmed automat­ic watering cycle begins. Sometimes it is necessary to run a program more
than once within the same day, for example, when growing a new lawn.
The controller has the ability to start each program twice a day.

Refer to the following guidelines when programming the start times:

• A start time (
individual zone.

• A program requires only one start time to operate automatically.

• When a program starts, each zone assigned to the program will water

in numerical order,

• Enough time should be provided between program start times to allow
all zones assigned to the program to be watered. If a start time pro­duces a watering cycle that runs beyond the next start time, the con­troller will delay the next start time(s) to allow completion of the previ­ous watering cycle.

• If a start time produces a watering cycle that runs past midnight, any
remaining start times scheduled to start before midnight will be can­celled.

• Start times begin according to the time they are programmed to water,
and not by the order at which they were programmed. For example,
the first start time programmed on
watering time to occur if it is programmed to water at 11:00 p.m., and
the last start time programmed on ST ART A may actually be the first
to occur if programmed to water at 5:00 a.m.

To Set Start Time

1. Press START 1A key. The display will show the current start time pro­grammed in START 1A or OFF if it has been disabled.

2. Hold down or repeatedly press the
hour until the desired hour and A (a.m.) or P (p.m.) are displayed.

3. Hold down or repeatedly press the
the desired minute is displayed.

4. Repeat the process to program the other

5. To disable a start time, advance the start time hour until
played. OFF comes after 1100P.

6. Press the

NOTE: Once you have pressed a START key, you must press the HRS or
MIN key within 10 seconds. Otherwise, the controller will revert back to time

mode

14

ST ART A or START B) activates a watering cycle, not an

one at a time until its designated run time.

ST ART A may actually be the last

HRS key to advance the start time
MIN key to advance the minute until

ST ART times as needed.

OFF is dis-

Clock key to return the controller back to time mode.

PROGRAMMING STEPS

STEP 4 : Setting The Zone Run Time

The zone run time is the duration the zone will water during a watering
cycle. Each of the six zones can be set to run at different duration between
2–99 minutes.

1. To set each zone’s run time, simply align each
the desired run time along the time indicator. Do not place the switch
between the indicated run times. During watering, the zone number and
its current run time will appear on the display

IMPORT ANT: Make sure the switches are placed on the minute marks and
not between the marks. Improper run time may occur.

STEP 5 : Setting Program Cycle Days

The DAYS switch sets the day interval for the program to cycle.

1. Move the
ing interval. Slide the switch to 4 for every 4th day, 3 for every 3rd day, 2
for every other day or 1 for everyday.

For example, if the
water every fourth day. After the switch is moved to 4, the display shows
day 1, which indicates a watering day. This means that program A will
water today if the watering time has not been missed.

By pressing the

day 1 to one of the following options:
day 0 - No more watering today.

day 1 - Water today.
day 2 - Water tomorrow.
day 3 - Water the day after tomorrow
day 4 - Water on the 4th day.

This option can be used when both programs are set to the same watering
cycle interval so program

To return the controller into time mode, press the
onds after the last keystroke.

2. Move the switch to

Note: The controller counts down from the day interval set to the designa­ted active watering day. Day changeover occurs at 1200P.

DAYS switch for each program (A or B) to the desired water-

DAYS switch on program A is set to 4, the controller will

HRS key while the display shows day 1, you can change

A will water on a different day than program B.

OFF if a program is unused.

ZONE MINUTE switch to

Clock key or wait 10 sec-

15

MANUAL AND SEMI-AUTO OPERATION

Step 1 : Manual Operation

1. To water your yard manually, move the PROGRAM switch of the zone
you wish to water to MAN. The controller will allow only one zone at any
given time to be watered manually. If more than one zone switch is
placed in the MAN position, only the lowest zone number will water.
When the switch is moved off the MAN position, the second lowest
zone number set to MAN will start to water. The MAN setting will over­ride any automatic watering cycle including any watering cycle in
progress.

NOTE: When a zone switch is placed in MAN, the controller will water
continuously until the switch is moved.

Step 2 : Semi-Auto Operation

1. Semi-auto operation can be initiated by pressing the PAUSE - SEMI-
AUTO key. The controller will energize all the zones, one zone at a

time, starting from zone 1 until zone 6. The controller will skip any zones
that are disabled (zones placed in the OFF position within the PRO­GRAM switches). The zones will continue to water until their designated
time duration expires, then the next zone in sequence will start. The
controller will revert back to the time mode after watering the last zone
in the sequence.

2. Pressing the
sequence.

To pause the cycle, press the
play will alternately flash “P AUSE” as well as the station number and
run time. To resume the watering cycle, press PAUSE - SEMI-AUTO
key again and the station run time countdown will continue.

3. To exit the semi-auto operation, first pause the operation by pressing
the

PAUSE - SEMI-AUTO key. After pausing the semi-auto operation,
press the CLOCK key followed by the PAUSE - SEMI-AUTO key to ter-
minate the operation. When terminated successfully, OFF will be dis­played. Pressing the MIN key repeatedly until the time mode is dis­played will also exit the semi-auto operation.

Min key will advance the watering to the next zone in

PAUSE - SEMI-AUTO key once. The dis-

16

CONTROLLER SHUT-DOWN / CIRCUIT BREAKER

Controller Shut-Down

When automatic watering is not needed, you can prevent the programmed
watering cycles from starting by moving the DAYS switches into the OFF
position.

NOTE: Manual watering is still possible even when the DAYS switches are
in the OFF position.

Electronic Circuit Breaker

The 446 PR/PRI controller is equipped with an electronic circuit breaker that
can detect short circuits in the valve zone terminals. If the controller detects
a short circuit, the shorted valve will automatically turn off. The display will
then alternately flash FUS with the shorted zone number. The controller will
continue to automatically water the remaining zones in the current watering
cycle as well as execute the next watering cycles.

After repairing the short circuit, press the
keys to return the controller to its current operating mode.

CLOCK or any of the START

17

VOLTAGE SPECIFICATION / TROUBLESHOOTING

Voltage Specifications

Power Input Station Output Pump Output

Domestic Models
International Models 250 V a.c., 50 Hz., 18W 24 V a.c., 1 VA 24 V a.c., 9 VAmax.

Troubleshooting

120 V a.c., 60 Hz., 35W 24 V a.c., 1 VA 24 V a.c., 9 VAmax.

Problem

One or more valves do not
operate.

Display is stuck on a zone

FUS is flashing on the

and
display.

Continuous loss of time.

Zones turn on when they are
NOT programmed to start.

The clock has the correct
time and the zones appear to
be functioning properly, but
none of the valves are on.

Zone does not shut

OFF.

Possible Cause

1. Faulty solenoid.

2. Poor wire connection.

3. Possible break in wire.

4. Valve flow stem is screwed down too far.

1. Faulty solenoid.

2. Shorted or poor wire connection.

1. No battery.

2. Weak or bad battery.

3. Controller is on an electrical circuit con­trolled by a switch.

4. Controller is on the same circuit as a
high power user (refrigerator, air condi­tioner, etc.).

1. Start times and the total combined zone
run times have overlapped.

1. One or more zone switches are in the
OFF position.

2. The common wire is not hooked up.

3. Valve flow stem is screwed down too far.

1. Zone switch is in

2. Faulty valve.

3. Particles of dirt or debris are preventing
proper valve operation.

MAN.

18

ELECTROMAGNETIC COMPATIBILITY

Domestic: This equipment has been tested and found to comply with the

limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does harmful interference
to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interfer­ence by one or more of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.

4. Consult the dealer or an experienced radio/TV technician for help.

The user may find the following booklet prepared by the Federal Communi­cations Commission helpful:

“How To Identify and Resolve Radio-TV Interference Problems”. This book-
let is available from the U.S. Government Printing Office, Washington, DC

20402. Stock No. 004-000-00345-4.

International: This is a CISPR 22 Class B product.

19

Irritrol Systems offers an entire family of products

for commercial and residential applications:

Controllers and Controller Accessories

Valves and Valve Accessories

Rotors, Spray heads, and Nozzles

U.S.A.:
P.O. Box 489
Riverside, California 92502
Tel: [phone]

[phone]

Europa:
Irritrol Systems Europe s.p.a.
Via dell’Artigianato, 1/3-Loc Prato della Corta
00065 Fiano Romano (Roma), Italia
Tel: [phone]

© 2001 Irritrol Systems Form No. 373-0154 Rev. A

Australia:
Irritrol Systems PTY Ltd.
53 Howards Road
Beverley SA 5009
Tel: [phone]