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DeWalt DXCM303.C Instruction Manual page 10

Single stage, belt drive, electric air compressor

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Features
AUTO (1) / OFF (O) SWITCH
Place this switch (E) in the AUTO (1) position
to provide automatic power to the pressure
switch and OFF (0) to remove power at the
end of each use.
DANGER: Risk of Shock. ALWAYS ensure the
switch (E) is in the OFF (0) position and unit is
unplugged before removing or replacing pressure
switch cover.
PRESSURE SWITCH
The pressure switch (not shown) automatically starts the motor
when the tank pressure drops below the factory set cut-in pres-
sure. It stops the motor when the tank pressure reaches the
factory set cut-out pressure.
SAFETY VALVE
Valve (A) 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 removed
or modified in any way.
CHECK VALVE
Fig. 6
When air compressor is operating, the
check valve (B) is open, allowing com-
pressed air to enter the tank. When the air
compressor reaches cut-out pressure, the
check valve closes, allowing air pressure to
remain inside the tank.
AIR INTAKE FILTER
The filter (C) is designed to clean air enter-
ing the pump. To ensure pump continually
receives a clean air supply, the filter must
always be clean and filter intake must be
free from obstructions.
TANK DRAIN VALVE
The drain valve (I) is located at the base of
Fig. 7
the tank and is used to drain condensation
at the end of each use. See Draining Tank
under Maintenance.
REGULATED PRESSURE GAUGE
The regulated pressure gauge (J) indicates
the air pressure available at the outlet side
of the regulator. This pressure is controlled
by the regulator. The regulator is designed
to allow pressures up to 125 PSI.
10
Fig. 8
Fig. 9
Fig. 10
Fig. 11
J
K

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