Intermatic T1975 Owner's Manual
MODEL: T1975
PROGRAM TIME SWITCH WITH “SKIPPER@”
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.
CHECK SKIPPER WHEEL. If switch is to function seven days a
week pull all pins, in skipper wheel up to “OUT” position. Otherwise
depress pin(s) in skipper wheel for day(s) automatic operation is not
required.
• If, after the dial is set to the correct time of day and the skipper
tripper (silver color) has not yet passed the skipper wheel, turn
wheel counter clockwise so that the previous day is opposite the
“DAY” arrow.
• Iftheskippertripperhasalreadypassedtheskipperwheelsetthe
correct day opposite the “DAY” arrow.
CLOCK
MOTOR
SUPPLY
NORMALLY CLOSED CIRCUIT
NORMALLY OPEN CIRCUIT
FIG. 1 WIRING DIAGRAM
CLOCK
COM.
N.C.
LOAD
NO.
LOAD
1.
2.
3.
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.
INTERMATIC INCORPORATED
SPRING GROVE, ILLINOIS 60081-9698
158TS12894
CLOCK MOTOR: 125 VOLTS - 60 HZ.
CLOCK MOTOR VOLTAGE AND CYCLE MUST BE AS SPECIFIED. TO ORDER
REPLACEMENT, INDICATE PART NO. (WG--) ON MOTOR COVER.
LR3730
TIME
DIAL
INSULATOR
MANUAL
LEVER
CAP
NUTS
SKIPPER
WHEEL
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