Rain Bird RAIN CLOCK PC-104 User Manual

1
RAIN CLOCK
OWNERS MANUAL
SPRINKLER SYSTEM CONTROLLER
RAIN CLOCK MODELS
PC-104 4 Station
PC-106 6 Station
PC-104-PS 4 Station with Pump Relay
Circuit
PC-106-PS 6 Station with Pump Relay
Circuit
Rain Bird Sales, Inc.
Customer Support Center
6991 E. Southpoint Rd., Bldg. #1, Tucson, AZ 85706

Rain Bird RAIN CLOCK PC-104 Specifications

General

Rain Delay	Yes
Display Type	LCD
Stations	4
Number of Zones	4
Watering Schedule	Programmable
Mounting	Indoor
Watering Duration	Adjustable
Watering Delay	Adjustable
Power Source	Transformer (included)

Summary

INSTALLATION INSTRUCTIONS

STEP 1: MOUNT THE TIMER

Covers selecting a location, removing the cover, and physically mounting the timer unit.

STEP 2: CONNECTING THE WIRING

Explains how to choose the correct sprinkler wire and connect valves to the timer.

STEP 3: CONNECTING THE TRANSFORMER

Details connecting the yellow, red, and blue wires to the transformer terminals.

STEP 4: USING THE PUMP START CIRCUIT

Describes the use of the pump start circuit for specific models and pump relays.

STEP 5: INSTALL A BATTERY

Instructions for installing a 9-volt battery for memory backup and operation.

PROGRAMMING INSTRUCTIONS

STEP 1: SET THE CURRENT TIME AND DAY

Guide to setting the current time and day using military time format.

STEP 2: SET THE DAYS OF THE WEEK TO WATER

How to select specific days or intervals for watering cycles.

STEP 3: SET THE TIME OF DAY TO WATER

Procedures for setting one, two, or three daily start times for watering.

STEP 4: SET THE WATERING TIME FOR EACH STATION

Adjusting the duration of watering for individual stations from 0-99 minutes.

STEP 5: START A WATERING CYCLE MANUALLY

How to manually initiate an entire watering cycle or advance to the next station.

STEP 6: TO INTERRUPT WATERING FOR RAIN

Using the AUTO/OFF button to temporarily stop watering and programming.

TROUBLE-SHOOTING

Common Problems and Solutions

Lists common issues like display blank, no automatic cycle, or timer gaining/losing time.

Programming Limitations

Timer Limitations

Outlines what the PC-104/106 series timer cannot do, like dual programmability.

GENERAL INFORMATION

What happens during a power failure?

Explains battery backup function and default mode after power loss.

When is the best time to water?

Discusses optimal watering times for lawns to minimize evaporation and disease.

How long should the system water?

Provides guidance on watering duration based on weather, soil type, and sprinkler type.

What should be done in the winter?

Recommendations for timer storage and winterization of sprinkler lines.