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Model | AC310H |
MAX Input Power | 1800 W |
SCFM @ 40 PSIG (L/min @ 2.8 bar) | 3.7 (106 L) |
SCFM @ 90 PSIG (L/min @ 6.2 bar) | 3.6 (101 L) |
SCFM @ 300 PSIG (L/min @ 21 bar) | 2.7 (77 L) |
Cut-In Pressure | 2.3 MPa (23 bar) |
Cut-Out Pressure | 2.8 MPa (28 bar) |
Bore x Stroke x Qty | 62 mm x 31 mm x 1 45 mm x 10 mm x 1 |
Voltage -Single Phase | 220 - 240 V AC |
Hz | 50 Hz |
Motor RPM | 1420 min -1 |
Lubrication | Oil-Less |
Tank Size | 1.6 gal (6.2 L) |
Weight | 36 kg (79.4 lb) |
Dimensions (L x H x W) | 18-3/4" x 14-3/4" x 20" (476 x 375 x 507 mm) |
Outlet Max Pressure "HP" (Exclusively for High Pressure Pneumatic Use) | 2.6 MPa (26 bar) |
Outlet Max Pressure "RP" (Exclusively for Regular Pressure Pneumatic Use) | 0.9 MPa (9 bar) |
Noise | L WA 90 dB |
Read the Safety Guidelines and ALL instructions carefully before operating.
The following show the symbols used for the equipment.
Be sure that you understand their meaning before use.
![]() | Read instruction manual. |
Risk of electric shock. Before doing any work on the compressor it must be disconnected form the power supply. | |
Risk of high temperatures. The compressor contains some parts which might reach high temperatures. | |
![]() | Risk of accidental start-up. Attention, the compressor could start automatically in case of a black-out and subsequent reset. |
![]() | Wear safety glasses. |
![]() | Only for EU countries Do not dispose of electric equipment together with household waste material! In observance of European Directive 2002/96/EC on waste electrical and electronic equipment and its implementation in accordance with national law, electric equipment that have reached the end of their life must be collected separately and returned to an environmentally compatible recycling facility. |
In observance of European Directive 2002/96/EC on waste electrical and electronic equipment and its implementation in accordance with national law, electric equipment that have reached the end of their life must be collected separately and returned to an environmentally compatible recycling facility.
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.
SAVE THESE INSTRUCTIONS.
IMPROPER OPERATION OR MAINTENANCE OF THIS PRODUCT COULD RESULT IN SERIOUS INJURY AND PROPERTY DAMAGE.
READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS BEFORE USING THIS EQUIPMENT.
Risk of Unsafe Operation WHAT CAN HAPPEN
Unsafe operation of your air compressor could lead to serious injury to you or others.
Risk of Air Tank Bursting
WHAT CAN HAPPEN
The following conditions could lead to a weakening of the tank, and RESULT IN A VIOLENT TANK EXPLOSION RESULTING IN SERIOUS INJURY TO YOU OR OTHERS:
HOW TO PREVENT IT
Risk of Attachments and Accessories Bursting
WHAT CAN HAPPEN
Exceeding the pressure rating of air tools, spray guns, air operated accessories, tyres AND other inflatables can cause them to explode or fly apart, and could result in serious injury to you and others.
Risk of Electric Shock
WHAT CAN HAPPEN
HOW TO PREVENT IT
Risk of Explosion or Fire
WHAT CAN HAPPEN
It is normal for electrical contacts within the motor and pressure switch to spark, whenever the compressor starts or stops. Never operate the compressor in an atmosphere where flammable vapours are present. Doing so can result in serious injury to you or others.
HOW TO PREVENT IT
Risk to Breathing
WHAT CAN HAPPEN
HOW TO PREVENT IT
Risk from Noise
Risk from Compressed Air
WHAT CAN HAPPEN
The compressed air stream can cause soft tissue damage, and can propel dirt, chips, loose particles and small objects at high speed, resulting in property damage or personal injury.
HOW TO PREVENT IT
Risk from Moving Parts
WHAT CAN HAPPEN
The compressor cycles automatically when the pressure switch is in the on/auto position. If you attempt repair or maintenance while the compressor is operating or plugged in, you can expose yourself to moving parts. These moving parts can cause serious injury.
HOW TO PREVENT IT
Risk of Burn
Do not operate the portable compressor with the doors or enclosures open!
Do not open the cock before the air hose is attached!
WHAT CAN HAPPEN
Contact with hot parts such as the compressor head or outlet tubes could result in a serious skin burn.
HOW TO PREVENT IT
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure of air delivery.
PSIG: Pounds per square inch gauge; a unit of measure of pressure.
CUT-IN PRESSURE: While the motor is off, air tank pressure drops as you continue to use your accessory or air tool. When the tank pressure drops to a certain level the motor will restart automatically. This is called "cut-in pressure".
CUT-OUT PRESSURE: When you turn on your air compressor, it begins to run, air pressure in the air tank begins to build. It builds to a certain pressure before the motor automatically shuts off - protecting your air tank from pressure higher than its design rating. The pressure at which the motor shuts off is called "cut-out pressure".
All Makita manufactured air compressors are recommended to be operated at no more than a 50% duty cycle. This means an air compressor that pumps air more than 50% of one hour is considered misuse because the air compressor is undersized for the required air demand.
This air compressor is equipped with an Oil-Less pump designed for durability and no maintenance.
The compressor can be used for properly rated pneumatic nailers and staplers. An air pressure regulator is supplied for these applications.
Never use compressor for applications other than to operate a properly rated nailer or stapler. Use of the compressor for other applications could result in property damage and personal injury.
Separate air filter regulators combine the functions of air regulation and/or moisture and dirt removal should be used where applicable.
Each air compressor outfit is carefully tested and checked before shipment. With improper handling, damage may result in transit and cause problems with compressor operation.
Immediately upon arrival, check equipment for both concealed and visible damages to avoid expenses being incurred to correct such problems. This should be done regardless of any visible signs of damage to the shipping container. If this product was shipped directly to you, report any damages to the carrier and arrange for inspection of goods immediately.
Before you store the air compressor, make sure you do the following:
Store the air compressor in a clean and dry location.
DRAIN VALVE: The drain valve is located at the bottom of the air tank and is used to drain condensation from the tank at the end of each use or daily.
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.
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 has cooled down.
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.
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 the pressure less than the 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; 2.6 MPa (26 bar)
COMPRESSED AIR OUTLET; "RP" marking
For Regular Pressure Pneumatic Tool Use Outlet Max Pressure; 0.9 MPa (9 bar)
Locate the air compressor in a clean, dry and wellventilated 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 0.3 m away from the wall or other obstructions that would 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.
Place the air compressor on a level surface so that it rests securely on the rubber feet.
This air compressor is equipped with an Oil-Less pump designed for durability and no maintenance.
Operate the compressor at voltages specified on the nameplate, the allowable tolerance range must remain within ±5%. If using the compressor at a higher voltage than the rated voltage, it will result in abnormally fast motor speed and may damage the unit and burn out the motor.
To avoid voltage drop, power loss, and overheating of the motor, use extra air hose instead of an extension cord. Low voltage can cause damage to the motor.
If an extension cord must be used:
Please see the chart below for the MINIMUM extension cord gauge requirements:
Total Length of Cord in Meter | ||||||
Amp Rating Range (220 - 240 V) | 10 m 25 ft. | 15 m 50 ft. | 20 m 75 ft. | 30 m 100 ft. | 50 m 150 ft. | 60 m 200 ft. |
0 - 5 A | 1.5 mm2 | 1.5 mm2 | 1.5 mm2 | 2.5 mm2 | 4 mm2 | 4 mm2 |
5.1 - 8 A | 1.5 mm2 | 1.5 mm2 | 1.5 mm2 | 4 mm2 | 4 mm2 | 4 mm2 |
8 - 12 A | 2.5 mm2 | 2.5 mm2 | 4 mm2 | Not Recommended |
Plastic or PVC pipe is not designed for use with compressed air. Regardless of its indicated pressure rating, plastic pipe can burst from air pressure. Use only metal pipe for air distribution lines. If a pipe line is necessary, use pipe that is the same size, or larger than, the air tank outlet. Piping that is too small will restrict the flow of air. If piping is over 100 feet long, use the next larger size. Bury underground lines below the frost line and avoid pockets where condensation can gather and freeze. Apply pressure before underground lines are covered to make sure all pipe joints are free of leaks.
Improper grounding can result in electrical shock. Do not modify the plug that has been provided. If it does not fit the available outlet, the correct outlet should be installed by a qualified electrician.
Daily Start-up Checklist
Risk of unsafe operation. Firmly grasp hose in hand when installing or disconnecting to prevent hose whip.
Losing control of the hose may result in personal injury and property damage.
When you are finished:
Risk of unsafe operation. Firmly grasp hose in hand when installing or disconnecting to prevent hose whip.
Losing control of the hose may result in personal injury and property damage.
Note:
If drain valve is plugged, release all air pressure. The valve can then be removed, cleaned, then reinstalled.
Drain Air Tank Properly. Improper draining of the air tank can result in corrosion and possible bursting of the tank. Tank bursting could lead to personal injury and property damage.
Never use the air compressor which is operating abnormally. If the air compressor appears to be operating unusually, making strange noises or vibration, stop using it immediately and arrange for repairs by a Makita authorized service center.
Use only genuine Makita replacement parts. Replacement parts not manufactured by Makita may void your warranty and can lead to malfunction and result in injuries. Genuine Makita parts are available from an authorized dealer.
UNIT CYCLES AUTOMATICALLY WHEN POWER IS ON. WHEN DOING MAINTENANCE, YOU MAY BE EXPOSED TO VOLTAGE SOURCES, COMPRESSED AIR OR MOVING PARTS. PERSONAL INJURIES CAN OCCUR. BEFORE PERFORMING ANY MAINTENANCE OR REPAIR, UNPLUG THE COMPRESSOR AND BLEED OFF ALL AIR PRESSURE.
To ensure efficient operation and longer life of the air compressor unit, a routine maintenance schedule should be prepared and followed. The following routine maintenance schedule is geared to a unit in a normal working environment operating on a daily basis. If necessary, the schedule should be modified to suit the conditions under which your compressor is used. The modifications will depend upon the hours of operation and the working environment. Compressor units in an extremely dirty and/or hostile environment will require a greater frequency of all maintenance checks.
Risk of bursting.
Check Safety Valve. If safety valve does not operate properly over pressurization of the air tank may result in rupture or explosion causing personal injury and property damage.
Keep All Screws, Bolts and Covers Properly Tightened. If screws, plates or covers become loose personal injury or property damage may occur.
PROBLEM | CAUSE | CORRECTION |
Will not start | Fuse blown or circuit breaker tripped; Loose electrical connections; Extension cord not correct; Overheated motor | Check for cause and replace or reset; Check wiring connections Max.15m/50ft., min. 14ga; Use reset button/wait for automatic reset |
Low pressure | Air leak in safety valve Restricted air filter Defective check valve | Check valve manually: pull up ward on rings. If condition persists, replace valve; Clean or replace air filter; Replace check valve. |
Safety valve releasing | Defective pressure switch or improper adjustment | Check for proper adjustment and if problem persists, replace pressure switch |
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
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