Extech Instruments CB10 Manual de usuario

User Guide

Circuit Breaker Finder and GFCI

Receptacle Tester

Extech CB10

Introduction

Congratulations on your purchase of the Extech Model

CB10 Circuit Breaker Finder and Receptacle Tester. This

instrument is shipped fully tested and calibrated and, with

proper use, will provide years of reliable service.

Meter Description

Receiver

1. Indicating LED and Beeper

2. ON/OFF and Sensitivity adjust

3. Transmitter storage plug

Note that battery compartment is located on

rear of receiver

Transmitter

4. Receptacle LED coding scheme

5. GFCI test button

6. Receptacle LED’s

Safety

This symbol adjacent to another symbol,

terminal or operating device indicates that

the operator must refer to an explanation in

the Operating Instructions to avoid personal

injury or damage to the meter.

This WARNING symbol indicates a

potentially hazardous situation, which if not

avoided, could result in death or serious

injury.

This CAUTION symbol indicates a

potentially hazardous situation, which if not

avoided, may result damage to the product.

This symbol indicates that a device is

protected throughout by double insulation or

reinforced insulation.

Specifications

Operating Voltage 90 to 120V

Operating Frequency 47 to 63Hz

Power supply 9V battery (receiver)

Operating Temperature 41ºF to 104ºF (5ºC to 40ºC)

Storage Temperature -4oF to 140oF (-20oC to 60oC)

Operating Humidity Max 80% up to 87ºF (31ºC)

decreasing linearly to 50% at

104ºF (40ºC)

Storage Humidity <80%

Operating Altitude 7000ft. (2000meters) maximum.

Weight 5.9oz (167g)

Dimensions 8.5” x 2.2” x 1.5” (215 x 56 x

38mm)

Approvals UL CE

UL Listed The UL mark does not indicate that

this product has been evaluated

for the accuracy of its readings.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this

instrument to be free of defects in parts and workmanship for

one year from date of shipment (a six month limited warranty

applies to sensors and cables). If it should become necessary

to return the instrument for service during or beyond the

warranty period, contact the Customer Service Department at

(781) 890-7440 ext. 210 for authorization or visit our website

www.extech.com for contact information. A Return

Authorization (RA) number must be issued before any product

is returned to Extech. The sender is responsible for shipping

charges, freight, insurance and proper packaging to prevent

damage in transit. This warranty does not apply to defects

resulting from action of the user such as misuse, improper

wiring, operation outside of specification, improper

maintenance or repair, or unauthorized modification. Extech

specifically disclaims any implied warranties or merchantability

or fitness for a specific purpose and will not be liable for any

direct, indirect, incidental or consequential damages. Extech's

total liability is limited to repair or replacement of the product.

The warranty set forth above is inclusive and no other

warranty, whether written or oral, is expressed or implied.

CAUTION

WARNING

CB10 V2.0 08/06



Support line (781) 890-7440

Technical support: Extension 200; E-mail: [email protected]

Repair & Returns: Extension 210; E-mail: repair@extech.com

Product specifications subject to change without notice

For the latest version of this User Guide, Software updates, and other

up-to-the-minute product information, visit our website: www.extech.com

Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA 02451

CORRECT WIRING

GFCI TESTING IN PROGRESS

HOT ON NEUTRAL WITH HOT OPEN

HOT AND GROUND REVERSED

HOT AND NEUTRAL REVERSED

OPEN HOT

OPEN NEUTRAL

OPEN GROUND

OFF ON

Operation

WARNING: Always test on a known good circuit before

use.

WARNING: Refer all indicated problems to a qualified

electrician.

Locating a Circuit Breaker or Fuse

The transmitter injects a signal onto the circuit which can be

detected by the receiver. The receiver will beep when the

signal is detected. The sensitivity adjustment allows for tracing

and pinpointing the exact circuit breaker or fuse protecting the

selected circuit.

1. Plug the Transmitter / Receptacle Tester into a powered

outlet. The two green LED’s should illuminate.

2. Rotate the Receiver’s Sensitivity adjustment from the

OFF position to the HI position. The red LED should turn

on. If the LED does not turn on, replace the battery.

3. Test the operation of the Receiver by placing it in close

proximity to the transmitter. The receiver should beep

and the LED should flash.

4. At the breaker panel, set the sensitivity to the HI position

and hold the receiver as indicated by the “UP – DOWN”

label.

5. Move the receiver along the row of breakers until the

selected circuit is identified by the beep and flashing

light.

6. Reduce the sensitivity as needed to pinpoint the exact

circuit breaker controlling the circuit.

Receptacle Wiring Test

1. Plug the Transmitter / Receptacle tester into the outlet.

2. The three LED’s will indicate circuit condition. The

diagram lists all of the conditions that the CB10 can

detect. The LED’s in this diagram represent the view

from the GFCI button side of the transmitter. When

viewing the other side of the transmitter the LED’s will be

a mirror image of those shown here.

3. The tester will not indicate the quality of the ground

connection, 2 hot wires in a circuit, a combination of

defects, or reversal of ground and neutral conductors.

Receptacle GFCI Test

1. Before using the tester, press the TEST button on the

installed GFCI receptacle, the GFCI should trip. If it does

not trip, do not use the circuit and call a qualified

electrician. If it does trip, press the RESET button on the

receptacle.

2. Plug the Transmitter / Receptacle tester into the outlet.

Verify that the wiring is correct as described above.

3. Press and hold the test button on the tester for at least 8

seconds, the indicator lights on the tester will shut off

when the GFCI trips.

4. If the circuit does not trip, either the GFCI is operable but

the wiring is incorrect, or the wiring is correct and the

GFCI is inoperable.

Replacing the Battery

1. When the battery drops below the operating voltage the

receiver’s LED will not light. The battery should be

replaced

2. Remove receiver battery cover by removing the screw

using a Philips head screwdriver. (The Transmitter is line

powered.)

3. Install 9 volt battery observing the correct polarity.

4. Re-install battery cover

5. Dispose of the old battery properly.

in part in any form.

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