Intermatic T173 Owner's Manual

MODEL: T173

LR3730

24 HR DIAL TIME SWITCH WITH “SKIPPER®”

DOUBLE POLE SINGLE THROW (DPST)

40 AMP. RESISTIVE, INDUCTIVE, TUNGSTEN OR
1000 VA. PILOT DUTY PER POLE - 120/208/277 VOLT AC;
2 HP (24 FLA) - 120V AC; 5 HP (28 FLA ) - 240V AC.

CLOCK MOTOR: 110-125 VOLTS - 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: 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
connections 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.

MINIMUM

COPPER

WIRE SIZE

(AWG)

14
12
10

8

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.

158TS10958

MAX.
LOAD

(AMP)

15
20
30
40

MIN.
INSUL­ATION

TEMP(°C)

60

60

60

75

ON/CUTOUT

TRIPPER

DAY
ARROW

SKIPPER
WHEEL

SKIPPING
SCREW

75°C INSULATION MAX. MOTOR

LOAD (HP)

SINGLE PHASE

120 V. 240 V. 208 V.

2

1/2

2 1/2

1

3

2

5

-

INTERMATIC INCORPORATED

SPRING GROVE, ILLINOIS 60081-9698

N/A

WIRING

DIAGRAM

NEUT.

LINE 1
LINE 2

120/240 VOLT 3 WIRE SUPPLY

3 PHASE

240 V.

N/A

CLOCK
MOTOR

A

1

2

3

4

TO
LOAD(S)

GROUND

PRESSURE PLATE

TERMINAL SCREW

MAKE SURE WIRE
INSULATION CLEARS
PRESSURE PLATE