Intermatic T7401B User Manual

MODEL: T7401B
SEVEN-DAY DIAL TIME SWITCH
4 POLE SINGLE THROW
MINIMUM “ON” TIME 3-1/2 HR. UP TO 3-1/2 DAILY ON-OFF OPERATIONS
CONTACT RATINGS:
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: 125 VOLTS - 60 HZ.
FOR REPLACEMENT MOTOR, ORDER WG1600
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 dia-
gram above. Use solid or stranded COPPER
only 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.
PROGRAMMING INSTRUCTIONS
1. TO SET “ON” TIMES, place bright ON trippers against edge of CLOCK-DIAL at
day-of-week and time-of-day when
“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
“OFF” operations are desired.
T
ighten tripper screws securely
.
3.
TO SKIP DAYS, omit trippers for the day(s) automatic operations is/are not required.
4.
TO SET DIAL TO TIME-OF-DAY, turn dial CLOCKWISE and align the exact day-of-
week and time-of-day (AM or PM) on dial with the
TIME POINTER. Some allowance
may be required to compensate for gear backlash.
CAUTION: DO NOT MOVE POINTER OR FORCE DIAL COUNTERCLOCKWISE.
OPERATING INSTRUCTIONS
• TO OPERATE SWITCH MANUALLY
: Move MANUAL LEVER below CLOCK-DIAL
left or right as indicated by arrows. This will not affect next automatic operation.
•
IN CASE OF POWER F
AILURE OR TO ADVANCE/RETARD TIME:
Reset time-of-
day, see step 4 of programming instructions.
DISCONNECT ELECTRICITY BEFORE ANY BEHIND-THE-INSULATOR WORK.
INTERMA
TIC INCORPORA
TED
SPRING GROVE, ILLINOIS 60081-9698
158TS10978
PRESSURE PLATE
TERMINAL SCREW
MAKE SURE WIRE
INSULATION CLEARS
PRESSURE PLA
TE
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
120 V
60 HZ
TO
LOADS
SUPPLY
WIRING DIAGRAM
GROUND
SCREW
3
4
5
7 1/2
3
5
7 1/2
10
CLOCK
MOTOR
2
1
A
3
4
5
6
7
8
B
LR3730
158TS10978 8/6/04 10:37 AM Page 1

Intermatic T7401B Specifications

General

Type	Mechanical Time Switch
Amperage	40 A
Programmable	Yes
Contact Type	SPST
Horsepower	2 HP
Enclosure	NEMA 1
Number of Poles	1
Number of Throws	1
Housing Material	Plastic
Mounting Type	Surface Mount
Mounting	Wall
Timing	24-Hour

Summary

Contact Ratings

Wiring Instructions

Programming Instructions

To Set "ON" Times

Setting the desired ON periods for the time switch operations by placing trippers.

To Set "OFF" Times

Setting the desired OFF periods for the time switch operations by placing trippers.

To Skip Days

Omitting trippers for specific days to bypass automatic operations.

To Set Dial to Time-of-Day

Aligning the clock dial with the current day and time for accurate scheduling.

Operating Instructions

To Operate Switch Manually

Manually controlling the switch position without affecting automatic timing.

In Case of Power Failure or To Advance/Retard Time

Procedure for resetting the time-of-day after power loss or for time adjustments.