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4

Connect the one common wire (usually the white strand) to the terminal labeled "COM". Connect the
second "hot" wire (usually the color-coded strand) from each valve to one of the terminals numbered
1 -6 on the number of stations on your timer model. Connect wire from valve 1 to terminal 1, valve 2
to terminal 2, etc.

NOTE: 

Be sure the wire connections are tight and make good contact. Also, it is recommended that you

join all splices with watertight splice connectors to prevent corrosion.

CAUTION: 

Wire only one valve to each terminal. Wiring more than one could result in damage to the

timer. Also, if using more than one timer, do not share "common" wires between the multiple timers.

TIP: To avoid possible pump damage, "jumper" wire each unused terminal screw to a terminal screw in use. See figure below.

STEP 4: WIRE VALVES

1.

Choose Wire (wire not included)

For runs of less than 800 feet, use 18 gauge color-coded, multi-strand direct burial wire. For runs of
longer than 800 feet, use 14 gauge color-coded, multi strand direct burial wire. Be sure the wire has
the number of strands equal to the number of valves used PLUS ONE for the Common Wire (e.g.
use 5 strand wire if there are 4 valves).

TIP: Spare wire strands maybe taped off for possible future expansion or trouble shooting use. Wire that will be buried under-
ground should have watertight connections and be approved for underground use. Avoid placing underground wire in locations
where it may be disturbed by digging or other movement.

2.

Connect Valve Wiring to Timer

To open wiring area on timer, lift cover over bottom panel. To lift panels, push down on panel and
pull bottom outward. Each valve connects to the timer through two wires. One wire (usually the white
strand) is connected as the "common" wire. All common wires should be spliced together at the
valves to become a single wire that will connect to the terminal marked "COM". The second or "hot"
wire (usually the color-coded strand) from each valve connects to one of the terminals numbered 1-
6. See the figure below.

Summary of Contents for Optima PRT-4

Page 1: ...eatures allow you to keep all your program settings while turning off your system when you want Just in case if you have questions please call us toll free at 1 800 742 9922 U S A Canada Mex ico ABOUT...

Page 2: ...ll struggling with your old sprinkler timer Having a hard time complying with local watering restrictions Upgrading to a new Rain Bird sprinkler timer is easier than you might think New timers are eas...

Page 3: ...watered at a time The same cycle would repeat beginning at the next scheduled Start Time in this example at 6 a m Watering Duration Each station can be scheduled to water for a different length of ti...

Page 4: ...two keyholes A on the back of the timer over the screws 3 To further secure the unit open compartment cover and place screws 1 1 4 minimum length STEP 3 CONNECT BATTERY Connect a 9 volt alkaline batte...

Page 5: ...strand direct burial wire For runs of longer than 800 feet use 14 gauge color coded multi strand direct burial wire Be sure the wire has the number of strands equal to the number of valves used PLUS O...

Page 6: ...e timer 3 Plug transformer into electrical socket 4 Turn dial to Auto The following display should appear TIP If display does not come on check the electrical outlet CAUTION DO NOT plug in the transfo...

Page 7: ...the button to go to the next day 4 At this time the Monday indicator symbol will be on and the word ON or OFF will be flashing in the dis play Repeat step A 3 to continue on through the re mainder of...

Page 8: ...and the number of days in the interval will blink 3 Press the or arrow button to adjust the number of days you desire in the interval 4 Press the button and the Sunday symbol will blink Use the or ar...

Page 9: ...the time is correct press the button and go on to setting the next start time C 7 At this point the START indicator will be on C and the start time will be on The hour number will be blinking or the...

Page 10: ...on is indicated 5 To turn the unit OFF press either the M A button repeat edly until time of day is displayed or turn the dial to the Off position for 15 seconds then return to the Auto position STEP...

Page 11: ...t included with timer Transformer not plugged in Wall socket not supplying power Timer in OFF position Frozen Display Unplug pull out battery and fuse and let sit for 30 minutes Automatic and Manual C...

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