Troubleshooting Guide - DeWalt D55166 Guide D'utilisation

(including brush inspection and replacement) should
be performed by a D WALT factory service center
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or a D WALT authorized service center. Always use
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identical replacement parts.
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WARRAnTY sERViCE: Registering your product will
•
help you obtain more efficient warranty service in case
there is a problem with your product.
• COnFiRMATiOn OF OWnERshiP: In case of
an insurance loss, such as fire, flood or theft, your
registration of ownership will serve as your proof
of purchase.
FOR YOUR sAFETY: Registering your product will
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allow us to contact you in the unlikely event a safety
notification is required under the Federal Consumer
Safety Act.
Register online at www.dewalt.com/register.
Full One Year Warranty
D WALT heavy duty industrial tools are warranted for one
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year from date of purchase. We will repair, without charge,
any defects due to faulty materials or workmanship. For
warranty repair information, call 1–800–4-D
433–9258). This warranty does not apply to accessories
or damage caused where repairs have been made or
attempted by others. This warranty gives you specific legal
rights and you may have other rights which vary in certain
states or provinces.
lATin AMERiCA: This warranty does not apply to products
sold in Latin America. For products sold in Latin America,
see country specific warranty information contained either
in the packaging, call the local company or see website for
warranty information.
FREE WARning lABEl REPlACEMEnT: If your warning
labels become illegible or are missing, call 1–800–4-D
(1–800–433–9258) for a free replacement.
GLOSSARY
CFM: Cubic feet per minute.
sCFM: Standard cubic feet per minute; a unit of measure of
air delivery.
Psig: Pounds per square inch gauge; a unit of measure of
pressure.
kPa (kilopascal): Metric pressure measurement. 1
kilopascal equal 1000 pascals.
Code Certification: Products that bear one or more of
the following marks: UL®, CUL, CULUS, ETL®, CETL, CETLUS,
have been evaluated by OSHA certified independent safety
laboratories and meet the applicable Standards for Safety.
*UL® is a registered trademark of Underwriters Laboratories
and ETL® is a registered trademark of Electrical Testing
Laboratories.
Cut-in Pressure: While the motor is off, air tank pressure
drops when accessory is used. When the tank pressure
drops to a certain low level the motor will restart
automatically. The low pressure at which the motor
automatically restarts is called cut-in pressure.
Cut-Out Pressure: When an air compressor is turned on
and begins to run, air pressure in the air tank begins to
build. It builds to a certain high pressure before the motor
automatically shuts off, protecting your air tank from
pressure higher than its capacity. The high pressure at which
the motor shuts off is called cut-out pressure.
Branch Circuit: The circuit carrying electricity from
electrical panel to outlet.
Duty cycle: For proper operation of your air compressor, it
is recommended that a 50% duty cycle be maintained; that
is, the air compressor should not run more that 5 minutes in
any 10 minute period.
WALT (1–800–
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This section provides a list of the more frequently
encountered malfunctions, their causes and corrective
actions. The operator or maintenance personnel can
perform some corrective actions, and others may require
the assistance of a qualified D
dealer.
Problem
Excessive air tank pressure-safety valve pops off
Air leaks
Air leaks in air tank or at air tank welds
WALT
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Air leaks between head and valve plate
Air leaks from safety valve
Knocking noise
Pressure reading on the regulated pressure gauge
drops when an accessory is used
Compressor is not supplying enough air to operate
accessories
Regulator knob has continuous air leak
Regulator will not shut off air outlet
Motor will not run

Troubleshooting Guide

WALT technician or your
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