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158TS10968
7/27/04
MODEL: T1872BR
24 HOUR DIAL TIME SWITCH WITH "SKIPPER
2 NORMALLY OPEN - 2 NORMALLY CLOSED SET OF CONTACTS
(MAY BE WIRED AS DOUBLE POLE DOUBLE THROW)
40 AMP. RESISTIVE, EACH POLE 120-480 VOLT AC;
40 AMP INDUCTIVE TUNGSTEN OR 1000 VA PILOT DUTY EACH POLE
120-277 VOLT AC; 2 HP (24 FLA) - 120V AC; 5 HP (28 FLA) - 240V AC.
INDEPENDENTLY WIRED CLOCK MOTOR: 208-277 VOLTS-60 HZ.
CLOCK MOTOR VOLTAGE AND CYCLE MUST BE AS SPECIFIED. TO
ORDER REPLACEMENT, INDICATE ART NO. (WG--) ON MOTOR COVER.
TIME
POINTER
TIME
DIAL
OFF
TRIPPER
MANUAL
LEVER
FIGURE 1
WIRING INSTRUCTIONS: To wire switch
follow diagram above. If DOUBLE POLE
DOUBLE THROW switch action is
required, install jumpers (extend supply
wires) between terminals 1-6 and 3-8.
Use solid or stranded COPPER wire with insulation to suit installation. See gauge
selection table for normal service applications. To make power connections see
illustration below. REPLACE INSULATOR BEFORE TURNING ON ELECTRICITY.
Motor voltage and cycle (Hz.) must be as specified.
MIN.
MINIMUM
MAX.
INSUL-
COPPER
LOAD
(AMP)
ATION
WIRE SIZE
TEMP(°C)
(AWG)
14
60
15
12
60
20
10
30
60
8
40
75
PROGRAMMING INSTRUCTIONS
•
TO SET "ON" AND "OFF" TIMES: Hold trippers against edge
of CLOCK-DIAL, pointing to time (AM or PM) when ON and
OFF operations are desired, tighten tripper screws firmly. For
additional tripper pairs on CLOCK-DIAL order 156T1948A.
•
TO SET TIME-OF-DAY: Pull CLOCK-DIAL outward. Turn in
either direction and align the exact time-of-day on the CLOCK-
DIAL (the time now, when switch is being put into operation) to
the pointer. DO NOT MOVE POINTER.
• TO SKIP OPERATION(S) ON SELECTED DAY(S): Insert SKIPPING
SCREW(S) in SKIPPER WHEEL for day(s) automatic operation(s)
is/are NOT required. Tighten screws firmly. Move MANUAL LEVER to
"OFF" and rotate SKIPPER WHEEL to locate correct day-of-week
opposite DAY ARROW-- "YESTERDAY" if ON/CUTOUT TRIPPER
has not yet advanced wheel "TODAY" if it has.
OPERATING INSTRUCTIONS
• TO OPERATE SWITCH MANUALLY: Move MANUAL LEVER below
CLOCK-DIAL left or right as indicated by arrows. This will not effect
next operation.
CAUTION: TO AVOID SLOW SWITCH ACTION FAILURE, DO NOT
OPERATE SWITCH MANUALLY NOR PLACE A TRIPPER 4 HOURS
PRIOR TO ON/CUTOUT TRIPPER SWITCHING.
•
IN CASE OF POWER FAILURE, reset
proper time-of-day. See programming instructions.
INTERMATIC INCORPORATED
SPRING GROVE, ILLINOIS 60081-9698
158TS10968
4:10 PM
ON/CUTOUT
TRIPPER
DAY
ARROW
SKIPPER
WHEEL
SKIPPING
SCREW
75°C INSULATION MAX. MOTOR
LOAD (HP)
3 PHASE
SINGLE PHASE
120 V.
240 V.
208 V.
240 V.
1/2
2
1
2 1/2
N/A
N/A
3
2
5
-
Page 1
"
®
CLOCK
MOTOR
208-
277V
SUPPLY
SUPPLY
GROUND
WIRING DIAGRAM
SCREW
PRESSURE PLATE
TERMINAL SCREW
MAKE SURE WIRE
INSULATION CLEARS
PRESSURE PLATE
CLOCK-DIAL to
LR3730
TO
LOADS
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