Intermatic T1906 Owner's Manual
PROGRAM TIME SWITCH
FOR UP TO 48 TIMING OPERATIONS
ON 24 HOUR SCHEDULE
SINGLE POLE DOUBLE THROW
SWITCH RATING: 20 AMP. 125-480 VOLTS A.C. 1/2 HP-125V 1 HP-250V.
WIRING INSTRUCTIONS
This Time Switch can be wired to control two circuits as Single Pole
Double throw, or to control one circuit as Single Pole Single Throw. Either
normally open (NO) or normally closed (NC). To wire switch see wiring
diagram above.
TO PROGRAM TIME SWITCH, Depress tripper(s) into dial at desired
time(s) operation(s) is/are required.
• ON TIME: First tripper turns on the load for 16-20 minutes. Each
additional tripper will lengthen the on time by 15 minutes.
• OFF TIME: First tripper in raised position turns off the load for
10-14 minutes.Each additional space will lengthen the of time by 15
minutes.
SET TIME-OF-DAY: Turn dial in clockwise direction only and align
the exact time-of-day (the time now when switch is being put into
operation) to the “TIME” arrow on insulator.
TIME
DIAL
INSULATOR
MANUAL
LEVER
CAP
NUTS
CLOCK
MOTOR
SUPPLY
NORMALLY CLOSED CIRCUIT
NORMALLY OPEN CIRCUIT
FIG. 1 WIRING DIAGRAM
CLOCK
COM.
N.C.
N.O.
N.C.
LOAD
NO.
LOAD
1.
2.
OPERATING INSTRUCTIONS
TO CONTROL LOADS MANUALLY, Move manual lever (See Figure
1) up. This lever will close normally open circuit and open the normally
closed circuit. To return, to automatic control, move lever back to its
original position .
IN CASE OF POWER FAILURE, reset dial. See step (2) of programming
instructions.
TO REMOVE MECHANISM FROM CASE, Disconnect electricity and all
wiring. Depress retainer spring at upper left, or unscrew mounting screws,
then grasp dial and pull mechanism out.
INTERMATIC INCORPORATED
SPRING GROVE, ILLINOIS 60081-9698
154--00920
CLOCK MOTOR: 208- 277 VOLTS - 60 HZ.
CLOCK MOTOR VOLTAGE AND CYCLE MUST BE AS SPECIFIED. TO ORDER
REPLACEMENT, INDICATE PART NO. (WG--) ON MOTOR COVER.
LR3730
Model T1906
TIME
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