Intermatic T174 Supplementary Manual
MODEL: T174
24 HR DIAL TIME SWITCH WITH “SKIPPER
®
”
DOUBLE POLE SINGLE THROW (DPST)
40 AMP. RESISTIVE, EACH POLE 120V- 480V AC;
40 AMP. INDUCTIVE, OR TUNGSTEN OR
1000 VA. PILOT DUTY EACH POLE - 120-277 VOLT AC;
2 HP (24 FLA) - 120V AC; 5 HP (28 FLA ) - 240V AC.
WIRING INSTRUCTIONS: To wire switch follow diagram above. Use solid
or stranded COPPER
only wire with insulation to suit installation. See
gauge selection table for normal service applications. To make power con-
nections remove 1/2 inch of insulation from wire ends. Insert bare ends of
wire under the pressure plate of terminals. Use 3/16 or larger screwdriver
to tighten terminal screws firmly. (25 lb-in minimum).
REPLACE INSULATOR BEFORE TURNING ON ELECTRICITY.
PROGRAMMING INSTRUCTIONS
1.
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.
2.
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.
3.
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
158TS10959
CLOCK
MOTOR
A
1
2
GR
277/480 VOLT CONNECT MOTOR LEADS TO TERMINALS “A”
AND 1 AND SUPPLY NEUTRAL TO TERMINAL “A”.
TO
LOAD(S)
LINE 2
WIRING
DIAGRAM
240V 2 WIRE
AND GROUND
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
TIME
POINTER
TIME
DIAL
OFF
TRIPPER
MANUAL
LEVER
ON/CUTOUT
TRIPPER
DAY
ARROW
SKIPPER
WHEEL
SKIPPING
SCREW
LINE 1
3
4
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.
240V
SUPPLY
GROUND
LR3730
158TS10959 7/27/04 3:53 PM Page 1