Extech 480403 Instruction Manual

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.

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 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 (a FLIR company)

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.

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