Intermatic T1872BR Supplementary Manual
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.
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.
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 CLOCK-DIAL to
proper time-of-day. See programming instructions.
INTERMATIC INCORPORATED
SPRING GROVE, ILLINOIS 60081-9698
158TS10968
TIME
POINTER
TIME
DIAL
OFF
TRIPPER
MANUAL
LEVER
ON/CUTOUT
TRIPPER
208-
277V
SUPPLY
PRESSURE PLATE
TERMINAL SCREW
MAKE SURE WIRE
INSULATION CLEARS
PRESSURE PLATE
MINIMUM
COPPER
WIRE SIZE
(AWG)
MAX.
LOAD
(AMP)
MIN.
INSUL-
ATION
TEMP(°C)
75°C INSULATION MAX. MOTOR
LOAD (HP)
SINGLE PHASE
3 PHASE
120 V.
240 V.
208 V.
240 V.
14
12
10
8
15
20
30
40
60
60
60
75
1/2
1
2
-
2
2 1/2
3
5
N/A
N/A
DAY
ARROW
SKIPPER
WHEEL
SKIPPING
SCREW
CLOCK
MOTOR
GROUND
SCREW
TO
LOADS
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.
WIRING DIAGRAM
SUPPLY
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.
FIGURE 1
LR3730
158TS10968 7/27/04 4:10 PM Page 1