Extech Extech 480403 Manual

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

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User's Guide

Phase Sequence and Motor
Rotation Tester

Model 480403

Introduction

Congratulations on your purchase of the Extech Model 408403
Motor and Phase Rotation Indicator. This handheld instrument
detects the rotational field of three-phase systems and determines
motor-rotation direction. Color-coded test leads are provided for
connecting to the system or motor under test. This meter is shipped
fully tested and calibrated and, with proper use, will provide years
of reliable service.

Safety

International Safety Symbols

Caution ! Refer to the explanation in this Manual

!

Caution ! Risk of electric shock

Earth (Ground)

Double Insulation or Reinforced insulation

AC, Alternating Current or Voltage

DC, Direct Current or Voltage

Safety Procedures

To avoid possible electric shock or fire, observe the following:

 Read the following information carefully before using or

servicing the instrument.

 Adhere to local and national safety codes.
 Individual protective equipment must be used to prevent

shock and injury.

 Use of instrument in a manner not specified by the

manufacturer may impair safety features/protection provided
by the equipment.

 Avoid working alone.

480403 V1.0 6/07 2

Test Equipment Depot - 800.517.8431

99 Washington Street Melrose, MA 02176

FAX [phone] - TestEquipmentDepot.com

 Inspect the test leads for damaged insulation or exposed

metal. Check test lead continuity. Damaged leads must be
replaced. Do not use the meter if it appears damaged.

 Use care when working above 30V ac rms, 42V ac peak and

60V dc. Such voltages pose a shock hazard.

 When using the probes, keep fingers away from probe

contacts. Keep fingers behind the finger guards on the
probes.

 Measurements can be adversely affected by impedances of

additional operating circuits connected in parallel or by
transient currents.

 Verify operation prior to measuring hazardous voltages

(voltages above 30V ac rms, 42V ac peak and 60V dc).

 Do not use the meter with any of the parts removed.
 Do not use the meter near explosive gas, vapor, or dust.
 Do not use the meter in a wet environment.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrumen t

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 [phone] 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.

480403 V1.0 6/07 3

Test Equipment Depot - 800.517.8431

99 Washington Street Melrose, MA 02176

FAX [phone] - TestEquipmentDepot.com