Makita ‎MAC320Q 3-Gallon Air Compressor User Manual

Makita ‎MAC320Q 3-Gallon Air Compressor

Parts description

1. Air filter (Air intake)
2. Check valve
3. Safety valve
4. Air compressor pump
5. Regulator
6. Tank pressure gauge
7. Outlet pressure gauge
8. Quick coupler
9. Air tank
10. Drain valve
11. Pressure switch
12. Power cord
13. ON/AUTO-OFF switch
14. Pressure switch unloading valve

Note: The shape of the drain valve differs between MAC100Q and MAC210Q.

SPECIFICATIONS

• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Note: Specifications may differ from country to country.
• Minimum Circuit Requirement: 15 AMPS
• A circuit breaker is preferred. Use only a fuse or circuit breaker that has the same rating as the branch circuit on which the air compressor is operated. If the air compressor is connected to a circuit protected by fuses, use time delay fuses.

IMPORTANT

Read the Safety Guidelines and ALL instructions carefully before operating. www.makitatools.com,www.makita.ca.

GLOSSARY

• 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, the 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 restarted pressure is called “cut-in pressure”.
• CUT-OUT PRESSURE: When you turn on your air compressor, it begins to run, and 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 referred to as the “cut-out pressure.”

DUTY CYCLE

All Makita manufactured air compressors are recommended to be operated at not more than a 50% duty cycle. This means an air compressor that pumps air more than 50% in one hour is considered misuse because the air compressor is undersized for the required air demand.

GENERAL INFORMATION

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.

WARNING: Never use a 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 transformers, which combine the functions of air regulation and/or moisture and dirt removal, should be used where applicable.

ON-RECEIPT INSPECTION

DAMAGE: 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 the equipment for both concealed and visible damage 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 the goods immediately.

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.

AUTOMATIC SHUT-OFF SYSTEM:

If the compressor automatically shuts off before reaching its normal cutoff pressure:

1. Shut off all tools.
2. Unplug the compressor or turn off the pressure switch.
3. Wait until the compressor cools down (about 10 min.).
4. Replug the compressor or turn on the pressure switch to start the compressor.
5. Resume operation.

If you are using an extension cord, the compressor shuts off even after performing the above procedures. In this case, the extension cord is too long or too narrow. Replace the extension cord with a proper length and width.

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 the compressor will be left unattended.

AIR FILTER (AIR INTAKE):

Keep the air filter clean at all times. Do not operate the compressor with the air filter removed. The compressor does not operate at full capacity if the air filter is dirty. Before using the compressor, always check the air filter. If it is not clean, clean the air filter or replace the filter element.

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 than 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 counterclockwise 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 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:

• For Regular Pressure Pneumatic Tool Use
• Outlet Max Pressure: 135 PSIG (0.93 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 the 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. Place the air compressor on a flat surface so that it is resting securely on the rubber feet.

OPERATING TEMPERATURE

The operating temperature of this compressor is between 0°C and 40°C (32°F and 104°F). CAUTION: Never operate the compressor in temperatures below 0°C (32°F) and above 40°C (104°F).

Piping

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 pipeline is necessary, use a pipe that is the same size as, 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.

Grounding Instruction

WARNING: Risk of electric shock! In the event of a short circuit, grounding reduces the risk of shock by providing an escape wire for the electric current. This air compressor must be properly grounded.

The air compressor is equipped with a cord having a grounding wire with an appropriate grounding plug. The plug must be used with an outlet that has been installed and grounded in accordance with all local codes and ordinances. The outlet must have the same configuration as the plug. DO NOT USE AN ADAPTER. Inspect the plug and cord before each use. Do not use if there are signs of damage.

DANGER: 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.

LUBRICATION

This air compressor is equipped with an Oil-Less pump designed for durability and no maintenance.

Extension Cords

To avoid voltage drop, power loss, and overheating of the motor, use an extra air hose instead of an extension cord. Low voltage can cause damage to the motor. If an extension cord must be used:

• Use only an approved 3-wire extension cord that has a 3-blade grounding plug and a 3-slot receptacle that will accept the plug on the air compressor.
• Make sure the extension cord is in good condition.

OPERATING PROCEDURES

Daily Start-up Checklist

INSTALLING HOSES

WARNING: Risk of unsafe operation. Firmly grasp the hose in hand when installing or disconnecting to prevent hose whip. Losing control of the hose may result in personal injury and property damage.

1. Before attaching the air hose or accessories, make sure the pressure switch lever is set to “OFF,” and the air regulator or shut-off valve is closed.
2. Attach hose and accessories. Too much air pressure causes a hazardous risk of bursting. Check the manufacturer’s maximum pressure rating for air tools and accessories. The regulator outlet pressure must never exceed the maximum pressure rating.
3. Turn the pressure switch lever to “ON/AUTO” and allow tank pressure to build. The motor will stop when the tank pressure reaches the “cut-out” pressure.
4. Open the regulator by turning it clockwise. Adjust the regulator to the correct pressure setting. Your compressor is ready for use.
5. Always operate the air compressor in well-ventilated areas, free of gasoline or other solvent vapors. Do not operate the compressor near the spray area. When you are finished:

DISCONNECTING HOSES

WARNING: Risk of unsafe operation. Firmly grasp the hose in hand when installing or disconnecting to prevent hose whip. Losing control of the hose may result in personal injury and property damage.

1. Set the pressure switch lever to “OFF”.
2. Using the air tool or accessory, bleed the tank pressure down to zero.
3. Remove the air tool or accessory.
4. Drain water from the air tank by opening the drain cock valve on the bottom of the tank. WATER WILL CONDENSE IN THE AIR TANK. IF NOT DRAINED, WATER WILL CORRODE AND WEAKEN THE AIR TANK, CAUSING A RISK OF AIR TANK RUPTURE. Note: If the drain valve is plugged, release all air pressure. The valve can then be removed, cleaned, and reinstalled.
5. After the water has been drained, close the drain valve. The air compressor can now be stored.

WARNING: Drain the 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.

MAINTENANCE

WARNING:

• Never use the air compressor that 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.

WARNING: 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.

WARNING: 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.

NOTICE:

Never use gasoline, benzine, thinner, alcohol, or the like. Discoloration, deformation, or cracks may result. 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 daily.

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.

ROUTINE MAINTENANCE SCHEDULE

• Drain water from the air tank, any moisture separators, or transformers.
• Check for any unusual noise and/or vibration.
• Manually check all safety valves to make sure they are operating properly. WARNING: Risk of bursting. Check Safety Valve. If the safety valve does not operate properly, over-pressurization of the air tank may result in rupture or explosion, causing personal injury and property damage.
• Inspect the air filter, replace if necessary.
• Inspect air lines and fittings for leaks; correct as necessary. Each year of operation, or if a problem is suspected:
• Check the condition of the air compressor pump intake and exhaust valves.
• Check the condition of the check valve. Replace if damaged or worn out.
• Keep all screws, bolts, and covers tightly mounted. Check their conditions periodically.

WARNING: Keep All Screws, Bolts, and Covers Properly Tightened. If screws, plates, or covers become loose, personal injury or property damage may occur.

MAKITA LIMITED WARRANTY

Please refer to the annexed warranty sheet for the most current warranty terms applicable to this product. If the annexed warranty sheet is not available, refer to the warranty details set forth at the website below for your respective country.

• United States of America: www.makitatools.com
• Canada: www.makita.ca
• Other countries: www.makita.com

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Makita ‎MAC320Q 3-Gallon Air Compressor- FAQs