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these parts, and do not touch them to avoid possible
burns.
IMPORTANT
The electro-compressors must be connected to a
power socket protected by a suitable differential switch
(thermal breaker). The motor is equipped with a thermal
overload protector located inside the winding - this
stops the compressor when motor temperature reaches
excessively high values. If the thermal overload protector
is tripped, place the switch in the "Off" (0) position.
Unplug the compressor until it has completely cooled.
When cool, reattach the plug to the power supply and
move the switch to the "On" (I) position. The compressor
should start normally. If not contact your nearest service
centre immediately.
ADJUSTING OPERATING PRESSURE
You do not have to use the maximum operating pressure
at all times. On the contrary, the pneumatic tool being
used often requires less pressure. On compressors
supplied with a pressure reducer, operating pressure
must be correctly adjusted.
Adjust pressure to the required value by turning the knob
(4) clockwise to increase pressure and anti-clockwise to
reduce it. When you have obtained optimum pressure,
lock the knob by pressing it downward. For pressure
reducers equipped without a pressure gauge, the set
pressure can be seen on the graduated scale located on
the reducer body.
On pressure reducers equipped with a pressure gauge,
pressure can be seen on the gauge itself.
NOTE: Some pressure regulators do not have "push
to lock", therefore simply turn the knob to adjust the
pressure.
STOPPING THE COMPRESSOR
1. Press the switch into position "0" (according to the
type of pressure switch fitted on the compressor). DO
NOT turn off the unit by switching off at the socket or
pulling out the plug.
2. Turn regulator knob (4) anticlockwise until fully closed.
Ensure regulated pressure gauge reads 0 bar (0 psi).
MAINTENANCE CHART
Procedure
Check safety valve
Drain air tank
Check for unusual noise/vibration
Check for air leaks*
Clean compressor exterior
* To check for air leaks apply a solution of soapy water around joints. While compressor is pumping to pressure and
after pressure cuts out, look for air bubbles to form.
3. Remove hose and accessory.
4. Drain the air tank, see Draining Air Tank under
Maintenance. Ensure air tank pressure gauge reads 0
bar (0 psi).
MOTOR OVERLOAD PROTECTOR
The motor has a thermal overload protector. If the motor
overheats for any reason, the overload protector will
shut off the motor. The motor must be allowed to cool
down before restarting. To restart:
1. Set the On/Off switch (A) to OFF and unplug unit.
2. Allow the motor to cool.
3. Plug the power cord into the correct branch circuit
receptacle.
4. Set the On/Off switch to ON position.
Maintenance
m WARNING: To reduce the risk of injury, turn unit off
and disconnect machine from power source and remove
the compressed air from the air tank (Ensure air tank
pressure gauge reads 0 bar (0 psi)) before installing and
removing accessories, before adjusting or changing
setups.
An accidental start-up can cause injury.
The following procedures must be followed when
maintenance or service is performed on the air
compressor.
NOTE: Allow air compressor to cool down before starting
service.
NOTE: All compressed air systems contain maintenance
parts (e.g., oil, filters, separators) that are periodically
replaced. These used parts may contain substances that
are regulated and must be disposed of in accordance
with local, state, and federal laws and regulations.
NOTE: Take note of the positions and locations of parts
during disassembly to make reassembly easier.
NOTE: Any service operations not included in this section
should be performed by a DEWALT factory service
centre or a DEWALT authorized service centre.
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