Installation And Break-In Procedures; Pressure Switch; Safety Valve; Description Of Operation - Makita AC310H Instruction Manual

STORAGE
Before you store the air compressor, make sure you do
the following:
1. Review the "Maintenance" and "Operating
Procedures" sections and perform maintenance as
necessary. Be sure to drain water from the air tank.
2. Protect the electrical cord and air hose from damage
(such as being stepped on or run over).
Store the air compressor in a clean and dry location.

DESCRIPTION OF OPERATION

DRAIN VALVE: The drain valve is located at the bottom of
the air tank and is used to drain condensation at the end
of each use.
THERMAL CIRCUIT BREAKER:
The electric motor has a manual reset thermal circuit
breaker. If the motor overheats for any reason, the circuit
breaker will shut off the motor. Turn pressure switch to the
"off" position and wait for unit to cool before pushing the
reset button and restarting the compressor.
MOTOR THERMAL OVERLOAD
PROTECTOR:
When the current rating of the motor is exceeded the
thermo-protector will open and shut off the motor
automatically.
The motor must be allowed to cool down before restarting.
The compressor will automatically restart after the motor
cools down.
ON/AUTO - OFF SWITCH:
Turn this switch to "on" to provide automatic power to the
pressure switch and to "off" to remove power when
finished using the compressor or when compressor will be
left unattended.

AIR INTAKE FILTER:

This filter is designed to clean air coming into the
compressor pump. This filter must always be clean and
free from obstructions. See "Maintenance".
AIR COMPRESSOR PUMP:
To compress air, the piston moves up and down in the
cylinder. On the down stroke, air is drawn in through the
air intake valve. The exhaust valve remains closed.
On the upstroke of the piston, air is compressed. The
intake valve closes and compressed air is forced out
through the exhaust valve, through the outlet tube,
through the check valve and into the air tank. Useable air
is not available until the compressor has raised the air
tank pressure above that required at the air outlet.

CHECK VALVE:

When the air compressor is operating, the check valve is
"open", allowing compressed air to enter the air tank.
When the air compressor reaches "cut-out" pressure, the
check valve "closes", allowing air pressure to remain
inside the air tank.
PRESSURE SWITCH UNLOADING VALVE:
The pressure switch unloading valve located on the side
of the pressure switch, is designed to automatically
release compressed air from the compressor head and
the outlet tube when the air compressor reaches "cut-out"
pressure.

PRESSURE SWITCH:

The pressure switch automatically starts the motor when
the air tank pressure drops to the factory set "cut-in"
pressure. It stops the motor when the air tank pressure
reaches the factory set "cut-out" pressure.

SAFETY VALVE:

If the pressure switch does not shut off the air compressor
at its "cut-out" pressure setting, the safety valve will
protect against high pressure by "popping out" at its
factory set pressure which is slightly higher than the
pressure switch "cut-out" setting.
OUTLET PRESSURE GAUGE:
The outlet pressure gauge indicates the air pressure
available at the outlet side of the regulator. This pressure
is controlled by the regulator and is always less or equal
to the tank pressure. See "Operating Procedures".

TANK PRESSURE GAUGE:

The tank pressure gauge indicates the air pressure in the
tank.
REGULATOR:
The air pressure coming from the air tank is controlled by
the regulator knob. Turn the knob clockwise to increase
pressure and counter-clockwise to decrease pressure. To
avoid minor re-adjustment after making a change in
pressure setting, always approach the desired pressure
from a lower pressure. When reducing from a higher to a
lower setting, first reduce to some pressure less than
desired pressure. Depending on the air requirements of
each particular accessory, the outlet regulated air
pressure may have to be adjusted while you are operating
the accessory.
COMPRESSED AIR OUTLET; "HP" marking
For High Pressure Pneumatic Tool Exclusive Use
Outlet Max Pressure; 375 PSIG (2.6 MPa)
COMPRESSED AIR OUTLET; "RP" marking
For Regular Pressure Pneumatic Tool Use
Outlet Max Pressure; 130 PSIG (0.9 MPa)
INSTALLATION AND BREAK-IN
PROCEDURES

LOCATION OF THE AIR COMPRESSOR

Locate the air compressor in a clean, dry and well-
ventilated area. The air filter must be kept clear of
obstructions, which could reduce air delivery of the air
compressor. The air compressor should be located at
least 12 inches away from the wall or other obstructions
that will interfere with the flow of air. The air compressor
head and shroud are designed to allow for proper cooling.
If humidity is high, an air filter can be installed on the air
outlet adapter to remove excessive moisture. Follow the
instructions packaged with the air filter for proper
installation.
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