www.makitatools.com NOTICE Carefully read this instruction manual and the engine manual before attempting to operate this compressor. WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling this product.
OWNERS MANUAL FOR Gas Compressor MODEL No. MAC5501G SPECIFICATION CHART Maximum Horsepower SCFM @ 40 PSIG SCFM @ 100 PSIG Cut-In Pressure Cut-Out Pressure Engine RPM Tank Size Weight 5.5 HP 14 12.5 110 135 3600 10 Gallon 190 lbs. IMPORTANT - Read the Safety Guidelines and ALL instructions carefully before operating. Wear hearing protection Wear eye protection www.makitatools.
TABLE OF CONTENTS Important Safety Instructions …………………………………. …….…..4 Emissions Notice ………………………………………………. ………...8 Glossary ………………………………………………………… ………...8 Duty Cycle ……………………………………………………… ………...9 General Information ……………………………………………. ………...9 On-Receipt Inspection …………………………………………. ………...9 Storage …………………………………………………………. ………...9 Description of Operation ………………………………………. ………...9 Installation & Break In Procedure …………………………….. ……….10 Piping …………………………………………………………… ……….11 Operating Procedures …………………………………..
IMPORTANT SAFETY INSTRUCTIONS DANGER: Carbon Monoxide. Using an engine indoors can kill you in minutes. Engine exhaust contains high levels of carbon monoxide (CO), a poisonous gas you cannot see or smell. You may be breathing CO even if you DO NOT smell engine exhaust. The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
HAZARD Risk of Air Tank Bursting Risk of Attachments and Accessories 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: · Failure to properly drain condensed water from the tank, causing rust and thinning of the tank wall. · Modifications or attempted repairs to the tank.
HAZARD Risk From Noise Risk of Explosion or Fire Risk to Breathing Page 6 WHAT CAN HAPPEN Under some conditions and duration of use, noise from this product may contribute to hearing loss. Never operate the compressor in an atmosphere where flammable vapors are present. Doing so can result in serious injury to you or others. · The compressed air from your compressor is not safe for breathing. The air stream may contain carbon monoxide or other vapors, or particles from the tank or other components.
HAZARD Risk from Compressed Air Risk from Moving Parts Risk of Burn Risk of Injury from Lifting 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. If your attempt repair or maintenance while the compressor is operating, you can expose yourself to moving parts. These moving parts can cause serious injury.
This product may not be equipped with a sparkarresting muffler. If the product is not equipped and will be used around flammable materials or on land covered with materials such as agricultural crops, forest, brush, grass, or other similar items, then an approved spark arrester must be installed and is legally required in the state of California.
GLOSSARY (con't.) where applicable. CUT-OUT PRESSURE: When you start your air compressor, it begins to run, air pressure in the tank begins to build. It builds to a certain pressure before the engine automatically idles down - protecting your air tank from pressure higher than its design rating. The pressure at which the engine idles down is called "cut-out pressure". DUTY CYCLE All Makita manufactured air compressors are recommended to be operated on not more than a 50% duty cycle.
DESCRIPTION OF OPERATION (con't) 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 pistons move 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.
INSTALLATION AND BREAK-IN PROCEDURES (con't.) Initial Start Up Procedure: 1. Check engine & pump oil. 2. Open the air receiver's drain valve. 3. Run the compressor for a minimum of of twenty (20) minutes in the no-load condition to seat the piston ring. 4. Close air receiver drain valve. Your compressor is now ready for use. 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.
OPERATING PROCEDURES FILLING THE COMPRESSOR WITH OIL BEFORE OPERATING THE AIR COMPRESSOR 1) Remove the oil filler plug PLEASE CHECK THE FOLLOWING CAREFULLY: 1) Check to see that nuts and bolts are all snug. 2) Check if the quantity and quality of oil is correct. 3) If the intake filters are dirty, they should be replaced or cleaned.
OPERATING PROCEDURES CHECKING BELT TENSION Adjust belt(s) so when pressure is applied at the center, there is approximately 1/2" slack (see diagram "Figure A" below). If the belt is installed too tight, the engine might be overloaded. This will cause the engine to overheat. If the belt is installed too loosely, it will slip and excessive wear and vibration will occur. HOW TO INSTALL A NEW BELT IF REQUIRED: 1) Turn off engine. Wait until engine is completely stopped. 2) Remove belt guard.
EXTRA CARE SHOULD BE TAKEN TO AVOID PERSONAL INJURIES WITH AUTOMATICALLY CONTROLLED COMPRESSORS MAINTENANCE SCHEDULE DAILY OR BEFORE EACH USE 1) Check oil level 2) Drain condensation from air receiver 3) Check for any unusual noise or vibration 4) Be sure all nuts and bolts are tight WEEKLY 1) Turn off engine. Clean dust and foreign matter from cylinder head, engine, fan blades, intercooler, and air receiver.
TROUBLE SHOOTING PROBLEM POSSIBLE CAUSE Will not start Low pressure Oil in Discharge Compressor Overheats Compressor loads & unloads or idols up & down excessively Safety valve leaks Drain cock open Loose tubes or fittings Dirty or plugged air filter Defective unloader valve Too much oil in the crankcase Improper oil viscosity Compressor overheated Restricted air filter Worn piston rings Dirty compressor head, cylinder or intercooler Clogged inlet filter Operating pressure too high Low oil or wrong o
TROUBLE SHOOTING PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Insufficient output, low discharge pressure Clogged inlet filter Leaks in air lines, air valves, fittings, etc. Drive belts slipping.
TROUBLE SHOOTING PROBLEM POSSIBLE CAUSE System pressure leaking back through check valve when compressor is stopped.
TROUBLE SHOOTING PROBLEM Piston rings not seated POSSIBLE CAUSE CORRECTIVE ACTION Compressor operating outside in cold conditions or inlet filter not protected against weather Worn piston rings Piston rings not seated Provide adequate protection against extreme weather conditions. Replace piston rings See below. Allow 100 hours of normal operation for new rings to seat.
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