Intermatic ET171C User Manual

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Intermatic ET171C User Manual

A total of 20 set points are provided allowing up to 140 operations each week (20 set points X 7 days = 140 operations ). Repeat this procedure for as many of the 20 set points as required. Attempts to enter additional set points (beyond 20) will cause “F:UL” to appear in the display.

TO OVERRIDE PROGRAM: Program can be overridden at any time by selecting the MANUAL position. Program set points will be maintained but will not operate the controlled load(s) automatically.

TO REVIEW PROGRAM SET POINTS: Place the three position selector in the PROGRAM mode. Place the two position selector in OUTPUT mode. The display will show all zeros if there are no set points programmed or will show the first programmed set point and a programmed time with an ON or OFF depending on whether the time which appears is an ON set point or an OFF set point. Pressing the ENTER button will advance the display to the next set point in chronological order. In other words, the next set point on Sunday or the set point on Monday (day 2) will appear.

Pressing the ENTER button after the last set point has been displayed will cause ‘E:nd” to appear in the display. Further operation of the ENTER button will repeat the review cycle. TO ADD OR DELETE SET POINTS: Press the HOUR and/or MINUTE buttons to change the time displayed to show the new time you wish to add, then press the ENTER pushbutton. To remove a programmed time, press the ON/OFF button two times. when this is done, the set point displayed will be removed and the display will show all dashes.

To Operate Timer

After programming is complete, move the selector switches to the CLK and AUTO positions. The time switch will follow the scheduled program but will not immediately “catch up” to the presently programmed load condition; the time switch will “catch up” at the next scheduled ON or OFF setpoint. If necessary, press the ON/OFF button to turn the load on or off.

Trouble Shooting

SYMPTOM

POSSIBLE CAUSE(S)

CORRECTIVE ACTION

 

 

 

 

 

Time switch has no display.

Battery not properly installed or

Check battery and replace if necessary.

 

 

defective.

 

 

 

 

 

 

Display shows scrambled or

Time switch has not been reset.

Press the recessed reset switch and hold for

 

erratic times.

 

approximately 5 seconds.

 

 

Electrical noise is interfering with the

Electrical noise interference is highly unlikely

 

 

operation of the microprocessor.

since the electronic circuitry and the power

 

 

 

supply are completely isolated. The installation

 

 

 

of surge suppressors (metal oxide varistors-

 

 

 

MOVS) across terminals 3/4 (model ET173C

 

 

 

and ET174C across terminals 3/4 & 5/6) will help

 

 

 

to reduce electrical noise generated at the

 

 

 

switching contacts.

 

Display shows “L-bA”.

Display means “Low Battery”.

Replace battery within 30 days.

 

Display shows “Err 1” message.Slide switch not fully in its detent

Reposition slide switch into detent or “wiggle” until

 

 

position (open circuit).

display is corrected. If display does not correct,

 

 

 

contact or return to factory for service.

 

Display shows “Err 2” message.

Slide switch shorted circuit.

 

Display shows “Err 3” message.

Slide switch illegal position.

 

 

 

 

 

Load does not switch at-

PROGRAM/MANUAL/AUTO selector

Be sure MANUAL./AUTO is in the AUTO

 

programmed time.

not in AUTO position.

position.

 

 

Time switch is programmed incorrectly.

Check program - place the Program Selector in

 

 

 

the PROGRAM mode and press the Enter button

 

 

 

to review all twenty.

 

 

Power has not been supplied to the

Be sure power is applied to the line terminals #3

 

 

load. Note that the Neutral and Line

(#3 and #5 for ET173C and ET174C) in order to

 

 

terminals #1 & 2 (Line 1 and Line 2

power the load. Note that the output contacts are

 

 

are terminals for model ET174C) are

isolated from the timer power (terminals 1

 

 

isolated from the output terminals.

and 2). This allows the timer to switch various

 

 

 

loads from 24 volts through 277 volts.

 

 

 

 

 

LIMITED ONE YEAR WARRANTY

If within one (1) year from date of purchase, this product fails due to a defect in material or workmanship, Intermatic Incorporated will repair or replace, at its sole option, the unit free of charge. This warranty applies only to the original purchaser and is not transferable.

The warranty does not apply to: (a) damage caused by accident, abuse, mishandling, dropping, acts of God, or any negligent use; (b) units which have been subject to unauthorized repair, opened, taken apart, or otherwise modified; (c) units not used in accordance with directions; (d) damages exceeding the cost of the product. Some states do not allow a limitation of damages, so the foregoing limitation may not apply to you.

This warranty gives you specific legal rights and you may have other rights that vary from state to state.

INTERMATIC INCORPORATED WILL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS OR IMPLIED WARRANTIES. ALL IMPLIED WARRANTIES, INCLUDING THE WARRANTY OF MERCHANTABILITY AND THE WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, ARE HEREBY MODIFIED TO EXIST ONLY AS CONTAINED IN THIS LIMITED WARRANTY, AND SHALL BE OF THE SAME DURATION AS THE WARRANTY PERIOD STATED ABOVE.

This warranty service is available by either (a) returning the product to the dealer from whom the unit was purchased, or (b) mailing postage prepaid to the nearest authorized service center listed. Please be sure to wrap the product securely when mailing to avoid shipping damage. This warranty is made by: Intermatic Incorporated,/After Sales Service/ 7777 Winn Rd., Spring Grove, IL 60081-9698/815-675-7000 http://www.intermatic.com

INTERMATIC INCORPORATED

SPRING GROVE, ILLINOIS 60081-9698

158ET10371

®

Electronic 7 - Day Time Switches

With Battery Carryover

ET170 SERIES

INCLUDING MODELS:

ET171C (SPST) 120V Supply

ET173C (DPST) 120V Supply

ET174C (DPST) 240V Supply

ET175C (SPDT) 120V Supply

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

AM ON

5:20

Description

The Intermatic Electronic 7-Day Time Switch automatically switches loads according to a preset weekly schedule with to-the- minute accuracy. This time switch is designed to directly switch inductive or resistive loads up to 30 amps at 24, 120 or 240 volts and to switch tungsten or ballast loads up to the time switch rating. For use as a control timer in applications requiring 7-day load control such as lighting, heating, air conditioning systems, pumps, etcetera. Up to 20 (10 ON/10 OFF or any combination) set points (EVENTS) can be preset. These set points can be programmed for any or all 7 days to provide for up to 140 set points each week. Independent 7 day programming provides complete flexibility for applications where load switching differs each day of the week. The program can be overridden by selecting the MANUAL position.

CLOCK VOLTAGE: 120 V.A.C., 60 Hz. (ET171, ET173C, & ET175C)

240 V.A.C., 60 Hz. (ET174C)

POWER CONSUMPTION: 3.0 Watts Max. (ET171C &ET175C) 5.0 Watts Max. (ET173C & ET174C)

CONTACT CONFIGURATION: SPST model ET171C DPST model ET173C & ET174C & SPDT model ET175C SWITCH RATING: (Per Pole for ET173C & ET174C)

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.

SWITCH RATINGS: ET175C

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): 20 total (10 ON/10 OFF or any combination) daily.

Up to 140 (70 ON/70 OFF or any combination) weekly. 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: 6 days 23 hours 59inutesm . 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”.

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