Intermatic 158ET10367 User Manual

®

ET100 SERIES

Electronic 24 Hour Time Switches

With Battery Carryover

INCLUDING MODELS:

ET101C (SPST)
ET103C (DPST)
ET105C (SPDT)

OWNER/INSTALLER INSTRUCTION MANUAL

ATTENTION: READ CAREFULLY BEFORE ATTEMPTING TO INSTALL YOUR INTERMATIC
TIME SWITCH. FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN PERSONAL
INJURY AND/OR PROPERTY DAMAGE! RETAIN FOR FUTURE REFERENCE.

Specifications

CLOCK VOLTAGE: 120 V.A.C., 60 Hz.

AM ON

5:20

POWER CONSUMPTION: 3.0 Watts Max. (ET101C) &

(ET105C)

5.0 Watts Max. (ET103C)
CONTACT CONFIGURATION: SPST model ET101C
DPST model ET103C, & SPDT model ET105C.
SWITCH RATING: (Per Pole for ET103C)

• 30 Amps Inductive/Resistive, 24/120/240 V.A.C., 60 Hz.

• 20 Amps Resistive - 28 V.D.C.,

• 1 H.P. 120 V.A.C., 60 Hz.

• 2 H.P. 240 V.A.C., 60 Hz.

• 5 Amps Tungsten, 120/240 V.A.C., 60 Hz.

• 20 Amps Ballast 277 V.A.C., 60 Hz.

Description

The Intermatic Electronic 24 Hour Time Switch automatically
switches loads according to a preset daily schedule.

This time switch is designed to directly switch loads up to 30 amps
and to switch resistive or inductive loads up to the time switch rat­ing. For use as a control timer in applications requiring 24 hour
load control such as lighting, heating, air conditioning systems,
pumps, etcetera. Up to eight set points or events (4 ON/4 OFF) can
be preset. this schedule will repeat on a daily basis. The program
can be overridden by using the MANUAL position.

SWITCH RATINGS: ET105C
N.O. N.C. CONTACT
20 AMP 10 AMP Resistive and 28 VDC.

General Purpose 120-240 VAC
1 H.P. 1/4 H.P. MOTOR 120 V.A.C.
2 H.P. 1/2 H.P. MOTOR 240 V.A.C.
5 Amp - TUNGSTEN 120-240 V.A.C.
20 Amp 3 Amp BALLAST 120-277 V.A.C.

SET POINTS (EVENTS): 8 total (4 ON/4 OFF).
BATTERY POWERED CLOCK OPERATION: 3 Years minimum
(AA industrial grade alkaline supplied with time switch)
MIN. “ON” or “OFF” TIME: 1 minute.
MAX. “ON” or “OFF” TIME: 23 hours 59 minutes.
SHIPPING WEIGHT: 2,5 Lbs. (1.1 Kg)
CASE: Drawn steel; 7-3/4” (19.7 cm) high, 5” (12.7 cm)
wide, 3” (7.6 cm) deep; gray finish w/lockable spring hasp.
KNOCKOUTS: Combination 1/2 - 3/4” (one on back and
each side, two on bottom).
WIRE SIZE: AWG #10 through #18.

General Safety Information

WARNING: Disconnect all power before installing or
servicing this time switch or its connected loads.

1. Follow all local electrical and safety codes, National

Electric Code (NEC), as well as Occupational Safety and
Health Act (OSHA).

2. If the power disconnect point is out of sight, lock it in the “OFF”

position and tag it to prevent unexpected application of power.

3. This time switch case must be grounded.

4. Do not exceed the maximum current carrying capacity of this

time switch.

5. Always replace the plastic insulator covering the terminal

before turning power “ON”.

Installation

WARNING: DISCONNECT THE POWER TO THE TIME SWITCH
AND THE LOADS BEFORE INSTALLING THIS TIME SWITCH.

1. Mount the time switch in the desired location using the three
mounting holes which are provided. Mount the time switch at eye
level, if possible, providing sufficient room to the left of the
enclosure for the cover to swing open fully. (See Figure #1 and
Figure #2). The time switch mechanism does not need to be
removed from the enclosure to mount the time switch since the
top mounting hole is a slotted type mounting hole. Secure a
screw or other fastener at eye level. The head of the screw or
fastener should be slightly larger than the narrow portion of the
slotted hole to ensure that the time switch is securely held in
place. The remaining two mounting holes are accessible without
removing the time switch mechanism and will provide secure
and permanent mounting of the time switch.

2. If you do remove the mechanism, refer to Figure #1 and remove
the mechanism from the case by depressing the catch at the top
of the case and pulling out.

CAUTION; DO NOT TOUCH THE CIRCUIT BOARD
COMPONENTS SINCE STATIC DISCHARGE COULD
DAMAGE THE MICROPROCESSOR.

3. Replace the mechanism in the case if it has been removed.

4. Lift the left side of the insulator off of the retaining post and pivot
it up and away to expose the terminal strip.

5. Strip the supply and load wires by removing 1/2 inch of
insulation. DO NOT USE ALUMINUM WIRE. (See figure #3, #4
or #5). Insert the wire ends under the proper terminal plates and
tighten the screws firmly. Use AWG #10 through #18. Connect
ground wire to grounding terminal at bottom of case.

6. Replace the plastic insulator.

7. Be sure that the battery is functioning properly. this can be
checked by making sure the display is visible. If the display has
scrambled information, press the RESET switch and hold for
three to five seconds. Note that the battery can easily be
replaced without removing the time switch mechanism or field
wiring. simply press in and downward (in the direction of the
arrow) on the battery cover which is identified with the word
“Battery”. It is recommended that the battery be replaced with a
“AA” industrial grade alkaline cell at two to three year intervals
as part of the normal time switch maintenance observing battery
polarity markings when installing. No other maintenance is
required.

FIG. #1

Mounting Holes

Knockouts

FIG. #2

NOTE: For 120 Volt loads only since the timer voltage is 120 VAC

a jumper can be added between terminals 2 and 3 to supply load
power.

CAUTION: Do not use jumper if load(s) are not 120V. because the
load can be damaged. Supply separate power of the correct voltage to
terminal 3.

8. Place the selector switches in the “MANUAL” and “RUN”
positions.

9. Reapply power to the time switch.

Install Jumper Only If
Timer Input and Load
Voltage Are The Same,
Otherwise provide a
separate source of load
power to terminal 3.

FIG. #3

ET101C SPST