Orbit 27781 User Manual

PN 57880-24 Rev B
MODELS / MODÈLES / MODELOS:
57880, 57881, 57882, 57883, 27780, 27781, 27782, 27783,
91880, 91881, 91882, 91883, 94880, 94881, 94882, 94883
Users ManUal
ManUel de l’UtilisateUr
ManUal del UsUario
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08WTM005637 57880-24 rB.indd 1 11/15/07 3:34:25 PM

Orbit 27781 Specifications

General

Model Number	27781
Number of Outlets	1
Amperage	15A
Weather Resistance	Weatherproof
Mounting Type	Plug-In
Voltage	125V

Summary

Introduction

Getting Started

Essential first steps for using the sprinkler timer.

Programming Features

Details on dual programs, fail-safe, water budgeting, and start-time stacking.

User Controls

Set the Time of Day and Date

Step-by-step guide to setting the current time and date on the timer.

Determine a Watering Plan

Program A: Day(s) of Week Watering

Explanation of how Program A allows specific day selection for watering.

Program B: Interval and Odd/Even Day Watering

Details on Program B's interval watering and odd/even day scheduling options.

Programming

Program A: Setting Start Times

Instructions for setting the first cycle start time for Program A.

Program A: Setting Watering Durations

Guide to setting watering duration for each station in Program A.

Program A: Assigning Watering Days

How to select specific days of the week or every second day for watering.

Program B: Interval and Odd/Even Day Setup

Program B: Setting Start Times

Instructions for setting the cycle start times for Program B.

Program B: Setting Watering Durations

Program B: Assigning Watering Intervals

How to set watering intervals or odd/even day selection for Program B.

Automatic Operation and Features

Reviewing and Changing Programs

How to review, change, or return the timer to automatic operation.

Ready for Automatic Operation

Steps to ensure the timer is programmed and ready for automatic watering.

Timer Features

Station Advance and Timer Off

How to advance stations manually and turn the timer off.

Rain Delay Function

How to activate and set a delay for scheduled watering due to rain.

Water Budgeting

Adjusting watering duration by percentage for seasonal needs.

Multiple Start Times

Setting multiple start times for a single watering program.

Manual Watering

Manually Run Programs A and B

Instructions for manually running both Program A and Program B sequentially.

Manually Run Program A or B

How to manually run Program A or Program B individually.

Manually Run Individual Stations

Setting manual watering durations for specific stations.

Sprinkler Timer Installation

5 Steps for Timer Installation

Overview of the five essential steps for installing the sprinkler timer.

Selecting an Installation Location

Criteria for choosing the optimal location for the sprinkler timer.

Mounting the Sprinkler Timer

Installing Batteries

Instructions for installing the CR2032 battery for memory retention.

Wiring Electric Valves

Guide to connecting sprinkler wires from valves to the timer terminals.

Connecting Valve Wires to Timer

Connecting Electrical Power

Instructions for connecting the timer to a power source, indoor or outdoor.

Permanent Wiring Installation

Using a Junction Box for Wiring

Guidance on using a junction box for connecting the timer to power.

Connecting Sensors and Valves

Rain Sensor and Bypass Switch

How to connect a rain sensor and use the bypass switch.

Pump Start and Master Valve

Connecting a pump start relay or master valve to the timer.

Glossary of Terms

Fuse Information

Details on the 0.75 amp slow-blow fuse for circuit protection.

Troubleshooting Common Issues

Troubleshooting Problems and Causes

Lists common problems and their potential causes for the timer.

Getting Help and Support

Contact information for Orbit® Technical Service for assistance.

Warranty Information

Details on the product's warranty and how to exercise it.