Intermatic T51311BC Owner's Manual

MODEL: T51311BC

THREE CIRCUIT SEVEN DAY
TIMING CONTROL CENTER WITH SPRING-WOUND CARRY-OVER MOTOR

CIRCUIT A: PHOTO CONTROL ON-TIME SWITCH OFF
CIRCUIT B: PHOTO CONTROL ON-PHOTO CONTROL OFF
CIRCUIT C: TIME SWITCH ON-TIME SWITCH OFF

CONTACT RATINGS:

15 AMP., 1/2 H.P. - 125 OR 250 VOLTS A.C. - 420 V.A. PILOT DUTY, 150 WATTS TUNGSTEN -120V A.C.
TO CONTROL MECHANICALLY HELD AND MAGNETIC CONTACTORS (MAY ALSO BE USED WITH 24 VOLT
SYSTEMS IF WIRED IN ACCORDANCE WITH NATIONAL ELECTRICAL CODE REGULATIONS.)

CLOCK MOTOR AND PHOTO CONTROL: 120 VOLTS - 60 HZ.

LR3730

WIRING INSTRUCTIONS

This center can be programmed to control any lighting and other loads on three circuits on a seven day schedule
with selected day(s) of the week omitted from circuits A and C. For terminal markings refer to diagram above.
Follow national or local electrical code regulations and complete wiring as shown. Turn selector switches (bottom
front panel) to OFF. Replace panel before turning on electricity. Test each circuit individually.

PROGRAMMING INSTRUCTIONS

1. THE PHOTO CONTROL (INSTALLED OUTSIDE) selects the “ON” times for circuits A and B and the “OFF”

times for circuit B depending on time of season. If fine adjustment is needed move slide on photo control to retard/
advance “ON” time. (It will also affect the “OFF” time for circuit B.)

2. TO SET “OFF” TIMES FOR CIRCUIT C place bright ON trippers on dial edge at day-of-week and time-of-day
when “ON” operations are desired. They must be set at times within the daylight hours of winter. NOTE: In

order to reset time switch every OFF tripper on dial must be followed by an ON tripper if circuits A and C are used.

3. TO SET COMMON “OFF” TIMES FOR CIRCUITS A AND C place dark OFF trippers on
dial edge at times when “OFF” operations are desired.

4. TO SKIP DAYS ON CIRCUITS A AND C omit trippers for the day(s) automatic operation(s) is/are not required.
(Circuit B is independently controlled by the photo control.)

5. TO SET DIAL TO TIME-OF-DAY turn dial clockwise and align the exact day-of-week and time-of-day (AM or
PM) on dial with the time pointer. Some allowance may be required to compensate for gear backlash.
CAUTION: Do not force dial counterclockwise or move time pointer.

OPERATING INSTRUCTIONS

1. THE THREE POSITION SELECTOR SWITCHES provide manual control of the three circuits. When turned

to ON or OFF, lights or other loads will remain ON or OFF until the switch is manually reset. With a switch in
AUTOMATIC position, operations will follow the preset program of the center.

2. IN CASE OF EXTENDED POWER FAILURE OR NEED TO ADVANCE/RETARD TIME place selector
switches in OFF position. Reset time-of-day, see step 5 of programming instructions. Then turn selector switch
to ON or AUTOMATIC.

BEFORE ANY BEHIND-THE-PANEL WORK DISCONNECT ELECTRICITY

SPRING GROVE, ILLINOIS 60081-9698

INTERMATIC INCORPORATED

154--01176