DeWalt D55143 Instruction Manual page 6

parts could cause burns contributing to the dropping of the compres-
sor, damaging the compressor and/or injuring the operator.
FIG. 5
HOT SURFACES
CHECK
VALVE
VIEW FROM
COMPRESSOR
UNDERSIDE
AFTERCOOLER
RISK FROM NOISE
CAUTION: Wear appropriate personal hearing
protection during use. Under some conditions and
duration of use, noise from this product may contribute
to hearing loss.
Introduction
Congratulations on the purchase of your new D
Compressor! This compressor requires no oil. Now you can enjoy all
the benefits of having an air compressor without ever having to pur-
chase, add or change oil.
By reading the following simple safety, installation, operation, main-
tenance and troubleshooting steps described in this manual, you
will receive years of trouble-free operation.
Inspection of Compressor
Inspect for signs of obvious or concealed freight damage. Report
any damage to the delivering freight carrier immediately. Be sure
that all damaged parts are replaced and any mechanical problems
are corrected prior to the operation of the air compressor. Please
write the serial number in the space provided under the Service
section of this manual for future reference.
PUMP
WARNING: When using electric tools, basic safety precautions
HEAD
should always be followed to reduce risk of fire, electric shock and
personal injury.
D WALT Air Compressor Features
E
PRESSURE SWITCH
This pressure switch (C) is used to start or
stop the air compressor. Moving the lever
(B) to the ON position will provide auto-
matic power to the pressure switch which
will allow the motor to start when the air
tank pressure is below the factory set
cut-in pressure. When in the ON position,
the pressure switch stops the compressor
from charging air when the air tank pressure reaches the factory set
cut-out pressure limit. For ease of starting, this switch also has an
unloader valve located on the side of the switch designed to auto-
matically release compressed air from the air compressor pump
head and its discharge line when the air compressor reaches the
cut-out pressure limit or is shut off. Moving the lever to the OFF
WALT Air
E
position will open the pressure switch contacts and stop the air
compressor.
SAFETY RELIEF VALVE (FIG. 6)
This valve (I) is designed to prevent system failures by relieving
pressure from the system when the compressed air reaches a
predetermined level. The valve is preset by the manufacturer and
must not be modified in any way.
4
FIG. 6
C
B
I