Intermatic 158TS10990 User Manual

158TS10990 8/6/04 10:29 AM Page 1

MODEL: T7402B

LR3730

SEVEN-DAY DIAL TIME SWITCH WITH
SPRING WOUND CARRY-OVER MOTOR
4 POLE SINGLE THROW

MINIMUM “ON” TIME 3-1/2 HR. UP TO 3-1/2 DAILY ON-OFF OPERATIONS

40 AMP. RESISTIVE EACH POLE 120V-480V AC.
40 AMP. INDUCTIVE, TUNGSTEN EACH POLE 120V, 208V, 240V, OR
277V AC. 1000 VA PILOT DUTY EACH POLE 120V - 277V AC.
24 FLA, 144 LRA (2 HP) - 120V AC.; 28 FLA, 168 LRA (5 HP) - 240V AC.

SINGLE PHASE

28 FLA, 168 LRA (7 1/2 HP)-208V AC., (10 HP)-240V AC. 3 PHASE

CLOCK MOTOR: 208-277 VOLTS - 60 HZ.

FOR REPLACEMENT MOTOR, ORDER 131T69GA

CLOCK

MOTOR

208
277 V
60 HZ

SUPPLY

A

5

2

1

6

7

B

4

3

8

TO
LOADS

GROUND
SCREW

WIRING DIAGRAM

WIRING INSTRUCTIONS

This Time Switch can be wired to control one to four circuits simultaneously on a seven
day schedule. Clock motor voltage may be other than load voltage, but must be as
specified. For terminal markings, internal wiring and contact arrangements refer to wiring
diagram above. Use solid or stranded COPPER wire with insulation to suit installation. See
table for gauge selection.
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 screw driver to tighten
terminal screws firmly.

REPLACE FRONT INSULATOR BEFORE TURNING

ON ELECTRICITY.

MINIMUM

COPPER

WIRE SIZE

(AWG)

14
12
10

8

MAX.
LOAD

(AMP)

15
20
30
40

MIN.

INSUL-

ATION

TEMP(°C

60
60
60
75

75°C INSULATION MAX. MOTOR

240 V.

2

2 1/2

3
5

LOAD (HP)

SINGLE PHASE

120 V.

1/2

1
2

-

208 V

3
4
5

7 1/2

3 PHASE

.

240 V.

3
5

7 1/2

10

PRESSURE PLA
TERMINAL SCREW
MAKE SURE WIRE

INSULATION CLEARS
PRESSURE PLATE

TE

PROGRAMMING INSTRUCTIONS

O SET “ON” TIMES,

1. T

day-of-week and time-of-day when

place bright ON trippers against edge of CLOCK-DIAL at

“ON” operations are desired. Tighten tripper

screws securely.

2.

TO SET “OFF” TIMES, place dark OFF trippers against edge of CLOCK-DIAL at
times when

3.

TO SKIP DAYS, omit trippers for the day(s) automatic operations is/are not required.

O SET DIAL

4.

T

week and time-of-day (AM or PM) on dial with the

“OFF” operations are desired. Tighten tripper screws securely.

O TIME-OF-DA

T

Y,

turn dial CLOCKWISE and align the exact day-of-

TIME POINTER. Some allowance

may be required to compensate for gear backlash.

CAUTION: DO NOT MOVE POINTER OR FORCE DIAL

OPERA

• TO OPERATE SWITCH MANUALLY

TING INSTRUCTIONS

: Move MANUAL LEVER below CLOCK-DIAL

COUNTERCLOCKWISE.

left or right as indicated by arrows. This will not affect next automatic operation.

• IN CASE OF POWER FAILURE OR TO ADVANCE/RETARD TIME: Reset time-of-

day, see step 4 of programming instructions.

BEHIND-THE-INSULATOR WORK.

DISCONNECT ELECTRICITY

BEFORE

ANY

INTERMATIC INCORPORATED

SPRING GROVE, ILLINOIS 60081-9698

158TS10990