Intermatic T1871BR Supplementary Manual

Project4 7/27/04
MODEL: T1871BR
24 HOUR DIAL TIME SWITCH MECHANISM WITH ''SKIPPER ''
2 NORMALLY OPEN - 2 NORMALLY CLOSED SET OF CONTACTS
(MAY BE WIRED AS DOUBLE POLE DOUBLE THROW)
40 AMP. RESISTIVE,EACH POLE 120-480V. AC;
40 AMP. INDUCTIVE TUNGSTEN OR 1000 V.A. PILOT DUTY EACH POLE
120-277 V. AC; 2 H.P. (24 FLA) - 120 V. AC; 5 H.P. (28 FLA) - 240 V. AC
INDEPENDENTLY WIRED CLOCK MOTOR: 110-125V. 60 HZ.
CLOCK MOTOR VOLTAGE AND CYCLE MUST BE AS SPECIFIED. TO
ORDER REPLACEMENT, INDICATE PART NO. (WG--) ON MOTOR COVER.
TIME
POINTER
TIME
DIAL
OFF
TRIPPER
MANUAL
LEVER

WIRING INSTRUCTIONS:

switch follow diagram above. If DOUBLE
POLE switch action is required,
install jumpers (extend supply wires) between terminals 1-6 and 3-8. Use solid or
stranded COPPER wire insulation to suit installation. See gauge selection table for
normal service application.s To make power connections see illustration below.
Replace front 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. See caution below. For additional tripper pairs on CLOCK-
DIAL order 156T1978A.
•
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 TIME POINTER. DO NOT MOVE THE 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 bellow CLOCK-
DIAL left or right as indicated by arrows. This will not effect next operation.
•
CAUTION: TO AVOID SLOW TRIPPER ACTION FAILURE, DO NOT OPERATE
SWITCH MANUALLY NOR PLACE A TRIPPER 4 HOURS PRIOR TO ON/OFF
CUTOUT TRIPPER SWITCHING.
IN CASE OF POWER FAILURE, reset CLOCK-DIAL to proper time-of-day. See
programming instructions.
INTERMATIC INCORPORATED
158TS10933
4:08 PM
ON/CUTOUT
TRIPPER
DAY
ARROW
SKIPPER
WHEEL
SKIPPING
SCREW
To wire
75°C INSULATION MAX. MOTOR
LOAD (HP)
3 PHASE
SINGLE PHASE
120 V. 240 V. 208 V.
240 V.
3
1/2 2 3
5
1 2 1/2 4
71/2
3 5
2
10
5 7/12
-
SPRING GROVE, ILLINOIS 60081-9698
Page 1
CLOCK
MOTOR
120V
60 Hz
SUPPLY
GROUND
WIRING DIAGRAM
SCREW
LR3730
®
TO
LOAD(S)
PRESSURE PLATE
TERMINAL SCREW
MAKE SURE WIRE
INSULATION CLEARS
PRESSURE PLATE