DeWalt D55250 Guide D'utilisation page 6

of the most common hazards are discussed herein, along with the best
way to protect yourself and others:
• Know how to stop the engine quickly, and understand
the operation of all controls.
• Never permit anyone to operate the engine without proper
instructions.
• Do not allow children to operate the engine.
• Keep children and pets away from the area of operation.
Refuel with care: ALLOW THE ENGINE TO COOL. Gasoline is
extremely flammable, and gasoline vapor can explode. Refuel out-
doors, in a well-ventilated area, with the engine off. Never smoke
near gasoline, and keep flames and sparks away. Always store gaso-
line in an approved container. If any fuel is spilled, move compressor
to another location before starting the engine.
Carbon Monoxide Hazards: Exhaust gas contains poisonous carbon
monoxide. Avoid inhalation of exhaust gas. Never run the engine in a
closed garage or confined area.
Introduction
Congratulations on the purchase of your new D
pressor! You can be assured that this tool has been constructed with
the highest level of precision and accuracy. Each component has
been rigorously tested by technicians to ensure the quality, endurance
and performance of this air compressor.
By reading and following the safety, operation, maintenance, and
troubleshooting steps described in this manual, you will receive years
of trouble-free operation.The manufacturer reserves the right to make
changes in price, color, materials, equipment specifications, or models
at any time without notice.
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. The air com-
pressor serial number is located on the shroud of the compressor.
Please write the serial number in the space provided in the service
section for future reference.
D WALT Air Compressor Features
E
Pilot Valve
Pilot valves maintain a constant pressure
range while running continuously. The
pilot valve may be used to operate a
discharge line unloader or an unloading
device in the compressor head. The D
through the compressor head. Unloading occurs when the receivers
(tanks) reach a preset cut-out pressure limit. The pilot valve opens,
actuating the unloading device that allows the compressor to run in
an unloaded mode. When the tank pressure drops to the preset cut-in
pressure, the pilot valve closes allowing the unloading device to close
and the compressor once again pumps air into the tanks.
Manual Lock
The manual lock allows you to manually unload the compressor with
WALT Air Com-
E
air pressure in the tank. To operate the unloading device in the head,
rotate the flip lever to an in-line position (dashed lines). Be sure to
return lever to the loaded position after starting the engine or the pump
will not operate at preset pressures.
SAFETY RELIEF VALVE
This valve 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.
AIR TANK DRAIN VALVE
The drain valve (A) is used to remove moisture
from the air tank after the air compressor is shut
off.
3
WALT compressor unloads
E
A