Makita MAC5501G User manual

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.
MODEL # SERIAL #
MAC5501G
www.makitatools.com
NOTICE
Carefully read this instruction manual and the
engine manual before attempting to operate
this compressor.

Maximum Horsepower 5.5 HP
SCFM @ 40 PSIG 14
SCFM @ 100 PSIG 12.5
Cut-In Pressure 110
Cut-Out Pressure 135
Engine RPM 3600
Tank Size 10 Gallon
Weight 190 lbs.
IMPORTANT - Read the Safety Guidelines and ALL instructions
carefully before operating.
Wear hearing protection
Wear eye protection
www.makitatools.com
OWNERS MANUAL FOR
Gas Compressor
MODEL No.
MAC5501G
SPECIFICATION CHART

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 …………………………………..
……….11
Daily Start-up Checklist ……………………………………….. ..11
Compressor Lubrication ……………………………………….……….12
Filling Compressor With Oil …………………………………………….12
Oil Change ……………………………………………………………….12
Engine Lubrication ……………………………………………..……….12
Maintenance …………………………………………………….……….12
Checking Belt Tension ………………………………………………….13
Installing a New Belt …………………………………………………….13
Operating Your Air Compressor ……………………………………….13
Maintenance Schedule ………………………………………………….14
Trouble Shooting ……………………………………………….……….15
Compressor Maintenance Log ………………………………..……….18
Makita Warranty ……………………………………………….……….20
TABLE OF CONTENTS

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.
Unsafe operation of · Review and understand
Risk of your air compressor all instructions and
Unsafe could lead to serious warnings in this manual
Operation injury to you or others. · Become familiar with
the operation and
controls of the air
compressor.
· Keep operating area
clear of all persons,
pets, and obstacles.
· Keep children away
from the air compressor
at all times.
· Do not operate the
product when fatigued
or under the influence of
alcohol or drugs. Stay
alert at all times.
· Never defeat the safety
features of this product.
· Equip area of operation
with a fire extinguisher.
· Do not operate
machine with missing,
broken or unauthorized
parts.
Page 4
COULD RESULT IN SERIOUS INJURY AND PROPERTY DAMAGE.
IMPORTANT SAFETY INSTRUCTIONS
*SAVE THESE INSTRUCTIONS*
IMPROPER OPERATION OR MAINTENANCE OF THIS PRODUCT
WARNING
USING THIS EQUIPMENT.
HOW TO PREVENT IT
WHAT CAN HAPPEN
HAZARD
READ AND UNDERSTAND ALL WARNINGS
AND OPERATING INSTRUCTIONS BEFORE

The following · Drain the tank DAILY or
Risk of Air conditions could lead to after each use. If tank
Tank a weakening of the tank develops a leak, replace
Bursting and RESULT IN A VIOLENT it immediately with a
TANK EXPLOSION new tank or new com-
RESULTING IN SERIOUS pressor unit.
INJURY TO YOU OR · Never drill into, weld, or
OTHERS: make any modifications
· Failure to properly drain to the tank or its
condensed water from attachments. Never
the tank, causing rust attempt to repair a
and thinning of the tank damaged or leaking tank.
wall. Replace with a new tank.
· Modifications or · The tank is designed to
attempted repairs to withstand specific
the tank. operating pressures.
· Unauthorized Never make adjustments
modifications to the or parts substitutions to
pressure switch, alter the factory set
safety valve, or any other operating pressures.
components, which · For essential control of
control tank pressure. air pressure, you must
install a pressure reg-
ulator and regulated air
pressure gauge to the
air outlet of your com-
pressor.
Exceeding the pressure · Follow the equipment
Risk of rating of air tools, spray manufacturers recom-
Attachments
guns, air operated
mendation and never
and accessories, tires AND exceed the maximum
Accessories other inflatables can allowable pressure
Bursting cause them to explode or rating of attachments.
fly apart, and could Never use the
result in serious injury compressor to inflate
to you and others. small low-pressure
objects such as children's
toys, footballs, basket-
balls, etc.
Page 5
HAZARD
WHAT CAN HAPPEN
HOW TO PREVENT IT

Under some conditions Always wear certified
Risk From Noise and duration of use, safety equipment: ANSI
noise from this product S12.6 (S3.19) hearing
may contribute to protection.
hearing loss.
Never operate the
· Always operate the
Risk of compressor in an atmo- compressor in a well-
Explosion or sphere where flammable ventilated area, free of
Fire vapors are present. Doing gasoline or solvent
so can result in serious vapors.
injury to you or others. · If spraying flammable
materials, locate
compressor at least 20
feet away from spray
area.
· Store flammable
materials in a secure
location away from
compressor.
· The compressed air from · Never inhale air from the
Risk to your compressor is not compressor, either
Breathing safe for breathing. The directly or from a
air stream may contain breathing device
carbon monoxide or connected to the com-
other vapors, or particles pressor. Work in an area
from the tank or other equipped with good
components. cross ventilation.
· Sprayed materials such · Read and follow the
as paint, paint solvents, safety instructions
paint remover, insect- provided on the label or
icides, weed killers, etc., safety data sheet for the
contain harmful vapors material you are
and poisons. spraying.
· Breathing compressor or · Use an approved
sprayed materials vapor respirator designed for
can result in serious use with your specific
injury. application.
Page 6
HAZARD
WHAT CAN HAPPEN
HOW TO PREVENT IT

The compressed air · Always wear approved
Risk from stream can cause soft safety glasses with side
Compressed tissue damage, and can shields when using the
Air propel dirt, chips, loose compressor.
particles and small · Never point any nozzle
objects at high speed, or sprayer toward any
resulting in property part of the body or at
damage or personal other people or animals.
injury. · Always turn the
compressor off and bleed
pressure from the air line
before attempting
maintenance, attaching
tools or accessories.
If your attempt repair or · Always shut off the
Risk from maintenance while the compressor and release
Moving Parts compressor is operating, air pressure from the
you can expose yourself tank and any attach-
to moving parts. These ments before attempting
moving parts can cause any maintenance or
serious injury. repair.
· Never operate the
compressor with guards
or covers which are
damaged or removed.
Contact with hot parts · Never touch hot
Risk of such as the compressor components during or
Burn head, engine, or outlet
immediately after
tubes could result in a operation of the com-
serious skin burn. pressor. Do not reach
around protective
shrouds or attempt
maintenance until unit
has been allowed to
cool.
Serious injury can result · The compressor is too
Risk of Injury from attempting to lift too heavy to be lifted by
from Lifting heavy an object. one person. Obtain
assistance from others
before lifting.
Page 7
HAZARD
WHAT CAN HAPPEN
HOW TO PREVENT IT

This product may not be equipped with a spark-
arresting 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. It is a violation of California statutes section
130050 and/or sections 4442 and 4443 of the California Public
Resources Code, unless the engine is equipped with a spark arrester, as
defined in section 4442, and maintained in effective working order.
Spark arresters are also required on some U.S. Forest Service land and
may also be legally required under other statutes and ordinances.
The U.S., California Clean Air Act, and Environment Canada EPA,
California, and Canadian regulations require all manufacturers to
furnish written instructions describing the operation and maintenance
of emission control systems.
For proper instructions and procedures, refer to section "Emission
Control System Information" in your engine owners manual.
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 engine is
idling, air tank pressure drops as you
continue to use your accessory or air tool.
When the tank pressure drops to a certain
level, the engine will automatically go back
to full RPM & this is called "cut-in pressure".
Page 8
EMISSIONS NOTICE
GLOSSARY

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 DAMAGE: Each air compressor outfit is
your air tank from pressure higher than carefully tested and checked before ship-
its design rating. The pressure at which ment. With improper handling, damage
the engine idles down is called "cut-out may result in transit and cause problems
pressure". 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
All Makita manufactured air compressors regardless of any visible signs of damage
are recommended to be operated on not to the shipping container. If this product
more than a 50% duty cycle. This means was shipped directly to you, report any
an air compressor that pumps air more damages to the carrier and arrange for
than 50% of one hour is considered mis- inspections of goods immediately.
use because the air compressor is under-
sized for the required air demand.
Before you store the air compressor, make
sure you do the following:
1. Review the "Maintenance" and
Check oil, engine, and compressor pump "Operating Procedures" sections and
oil daily. Add oil as required. perform maintenance as necessary. Be
sure to drain water from the air tank.
2. For proper instructions & maintenance
Your air compressor can be used for for storing your gas engine, refer to the
operating paint spray guns, air tools, section your engine owners manual
caulking guns, grease guns, air brushes, titled "Storing Your Engine".
sandblaster, inflating tires or spraying 3. Store the air compressor in a clean and
weed killers, insecticides, etcs. An air dry location.
pressure regulator is supplied for these
applications.
Separate air transformers which combine DRAIN VALVE: The drain valve is located at
the functions of air regulation and/or the bottom of the air tanks and is used to
moisture and dirt removal should be used drain condensation at the end of each use.
Page 9
DESCRIPTION OF
OPERATION
GLOSSARY (con't.)
ON-RECEIPT INSPECTION
DUTY CYCLE
GENERAL
INFORMATION
STORAGE

OUTLET PRESSURE GAUGE: The outlet
pressure gauge indicates the air pressure
AIR INTAKE FILTER: This filter is designed to available at the outlet side of the regulator.
clean air coming into the compressor pump. This pressure is controlled by the
This filter must always be clean and free regulator and is always less or equal to the
from obstructions. See "Maintenance". tank pressure. See "Operating Procedures".
AIR COMPRESSOR PUMP: To compress air, REGULATOR: The air pressure coming from
the pistons move up and down in the the air tank is controlled by the regulator
cylinder. On the down stroke, air is drawn in knob. Turn the knob clockwise to increase
through the air intake valve. The exhaust pressure and counter-clockwise to decrease
valve remains closed. On the upstroke of pressure. To avoid minor re-adjustment
the piston, air is compressed. The intake after making a change in pressure setting,
valve closes and compressed air is forced always approach the desired pressure from
out through the exhaust valve, through the a lower pressure. When reducing from a
outlet tube, through the check valve and higher to a lower setting, first reduce to
into the air tank. Useable air is not some pressure less than desired pressure.
available until the compressor has raised Depending on the air requirements of each
the air tank pressure above that required at particular accessory, the outlet regulated
the air outlet. air pressure may have to be adjusted while
you are operating the accessory.
UNLOADER VALVE: When the compressor
pumps the factory set amount of air into
the tank, the unloader will blow off. This
puts the engine in idle mode and the
unloader will open, allowing the unused
air to escape preventing over pressuring
of the tank. LOCATION OF THE AIR COMPRESSOR
Locate the air compressor in a clean, dry,
SAFETY VALVE: If the engine does not and well-ventilated area. The air filter must
idle down at its "cut-out" pressure be kept clear of obstructions, which could
setting, the safety valve will protect reduce air delivery of the air compressor.
against high pressure by "popping out" at The air compressor should be located at
its factory set pressure (slightly higher than least 12 inches away from the wall or other
the unloader valve "cut-out" setting). Do not obstructions that will interfere with the
tamper with or attempt to eliminate the flow of air. The air compressor head and
safety relief valve. shroud are designed to allow for proper
cooling. If humidity is high, an air filter can
TANK PRESSURE GAUGE: The tank pressure be installed on the air outlet adapter to
gauge indicates the air pressure in the tank. remove excessive moisture. Follow the
instructions packaged with the air filter for
proper installation.
Page 10
DESCRIPTION OF
OPERATION (con't)
INSTALLATION AND
BREAK-IN PROCEDURES

Daily Start-up Checklist
1. Before attaching air hose or accessories,
make sure the pressure switch lever is
set to "OFF" and the air regulator or shut-
off valve is closed.
Initial Start Up Procedure: 2. Attach hose and accessories. Too much
1. Check engine & pump oil. air pressure causes a hazardous risk of
2. Open the air receiver's drain valve.
bursting. Check the manufacturer's
3. Run the compressor for a minimum of maximum pressure rating for air tools
of twenty (20) minutes in the no-load and accessories. The regulator outlet
condition to seat the piston ring. pressure must never exceed the maximum
4. Close air receiver drain valve. Your
pressure rating.
compressor is now ready for use. 3. Turn the pressure switch lever to "ON/
AUTO" and allow tank pressure to build.
Piping
Motor will stop when tank pressure
Plastic or PVC pipe is not designed for use reaches "cut-out" pressure.
with compressed air. Regardless of its 4. Open the regulator by turning it clockwise.
indicated pressure rating, plastic pipe can Adjust the regulator to the correct
burst from air pressure. Use only metal pressure setting. Your compressor is now
pipe for air distribution lines. ready for use.
5. Always operate the air compressor in
If a pipe line is necessary, use pipe that is well-ventilated areas; free of gasoline or
the same size, or larger than, the air tank other solvent vapors. Do not operate the
outlet. Piping that is too small will restrict compressor near the spray area.
the flow of air. If piping is over 100 feet long,
use the next larger size. Bury underground When you are finished:
lines below the frost line and avoid pockets 6. Set the pressure switch lever to "OFF".
where condensation can gather and freeze. 7. Using the air tool or accessory, bleed the
Apply pressure before underground lines are tank pressure down to zero.
covered to make sure all pipe joints are free 8. Remove the air tool or accessory.
of leaks. 9. Drain water from the air tank by opening
drain cock valve on bottom of tank.
WATER WILL CONDENSE IN THE AIR TANK.
Installation IF NOT DRAINED, WATER WILL CORRODE
Proper care, maintenance and lubrication AND WEAKEN THE AIR TANK CAUSING A
ensures longevity. The compressor should RISK OF AIR TANK RUPTURE.
always be level for proper lubrication. Use Note:
only in a clean, dry, well-ventilated area. The If drain cock valve is plugged, release all air
compressor has heat dissipation fins for pro- pressure. The valve can then be removed,
per cooling. Keep the fins and other parts cleaned, then reinstalled.
that collect dust clean. Do not place rags or
other materials on top of the compressor, as 10. After the water has been drained, close
this obstructs cooling and can be a fire the drain valve. The air compressor can
hazard.
now be stored.
Page 11
INSTALLATION AND
BREAK-IN PROCEDURES
(con't.)
OPERATING PROCEDURES

FILLING THE COMPRESSOR WITH OIL
BEFORE OPERATING THE AIR COMPRESSOR 1) Remove the oil filler plug
PLEASE CHECK THE FOLLOWING CAREFULLY: 2) Slowly pour the proper oil into the pump
1) Check to see that nuts and bolts are all crankcase
snug. 3) Always keep oil level in the middle of the
2) Check if the quantity and quality of oil sight glass
is correct.
3) If the intake filters are dirty, they should OIL CHANGES
be replaced or cleaned.
INITIAL OIL CHANGE DUE AT 25 HOURS
COMPRESSOR LUBRICATION Change oil every 300 hours or 3 months -
Always check the oil level and quality before whichever comes first.
start-up. DO NOT ADD OR CHANGE OIL
WHILE THE UNIT IS RUNNING. Use only 1) Remove the oil drain plug. Allow oil to
recommended non-detergent oil. drain completely.
2) Replace the oil drain plug.
RECOMMENDED OIL 3) Refill with the recommended oil to the
Compressor oil: #EAOIL10 (1 Liter) proper level.
Compressor oil:
#EAOIL40 (4 Liters)
*Compressor originally filled with SAE 30W ENGINE LUBRICATION
oil Check engine Owner's manual for lubrication
and maintenance requirements.
Compressor oil is a non-detergent mineral
oil formulated with additives to help MAINTENANCE
minimize carbon build-up, increase ring life, Before doing any maintenance or adjust-
and reduce oil consumption, for use at
ments to your air compressor, the following
ambient temperatures of 32º F - 86º Fsafety precautions should be taken:
(0º to 30º C) 1) Turn off engine. Wait until engine is
completely stopped.
OTHER APPROVED OILS 2) Drain air receiver and air lines of air
Regular mineral oils can also be used in pressure.
Makita compressors. Always use a non-
detergent oil with the following
specifications:
AMBIENT TEMPERATURES AT SAE ISO
POINT OF OPERATION VISCOSITY VISCOSITY
-16ºC TO 0°C (3.2°F - 32°F) SAE 10W ISO 32
1ºC TO 26°C (33.8°F - 78.8°F) SAE 20W ISO 68
ABOVE 27 °C (80.6°F) SAE 30W ISO 100
Page 12
OPERATING PROCEDURES

2) Check compressor and engine oil level,
CHECKING BELT TENSION fill or add if necessary.
Adjust belt(s) so when pressure is applied 3) Make sure gas tank is filled.
at the center, there is approximately 1/2" 4) Read entire engine manual.
slack (see diagram "Figure A" below). If 5) Starting the engine:
the belt is installed too tight, the engine a) Move fuel lever to the "ON"
might be overloaded. This will cause the
position.
engine to overheat. If the belt is installed - If engine is cold, move choke
too loosely, it will slip and excessive wear
lever to the "CLOSED" position.
and vibration will occur.
- If engine is warm, leave choke
lever in "OPEN" position.
b) Turn engine switch to "ON"
position.
c) Pull starter grip lightly until you
feel resistance, then pull briskly,
returning starter grip gently -
engine should start. If not, repeat.
d) Once the engine starts running,
HOW TO INSTALL A NEW BELT IF REQUIRED:
slowly move the choke lever to the
1) Turn off engine. Wait until engine is
"OPEN" position.
completely stopped.
e) With the engine running properly,
2) Remove belt guard.
the compressor fills the air
3) Loosen engine bolts and slide engine
receiver with compressed air, when
toward compressor head just enough to
maximum pressure (set by the pilot
allow the old belt to be removed.
valve control) is reached, the engine
4) Install proper replacement belt.
and compressor will slow down to
5) Slide engine away from compressor
idle speed, and will return to full
head to provide recommended tension
RPM when the cut-in pressure is
as shown in diagram above (Figure A).
reached. The unit will continue to
6) Align belt using a straight edge ruler
cycle automatically until turned off.
against pulley's edge. 6) Stopping the engine:
7) Fasten engine bolts.
a) Turn the engine switch to the "OFF"
8) Ensure engine and compressor pulley's
position.
are secure. Re-check alignment.
b) Turn the fuel lever to the "OFF"
9) Re-install belt guard.
position.
10) Belt tension should be checked after 20
hours of operation. Check tension
ENGINE IDLE SPEED MAY NEED TO BE
monthly thereafter. ADJUSTED, EVEN ON YOUR BRAND NEW
UNIT TO COMPENSATE FOR DIFFERENCES IN
ENGINE - GAS DRIVEN ALTITUDE. PLEASE CONSULT THE ENGINE
1) Check the entire unit for any damage. OPERATING MANUAL.
Page 13
OPERATING YOUR AIR COMPRESSOR
OPERATING PROCEDURES

3) Replace air filter (more often if comp-
EXTRA CARE SHOULD BE TAKEN TO ressor is used near paint spraying
AVOID PERSONAL INJURIES WITH operations or in dusty environments).
AUTOMATICALLY CONTROLLED
COMPRESSORS
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.
2) Clean air filter by opening air filter,
removing filter element and cleaning it
thoroughly and allow to dry completely
before assembly.
3) Worn filter should be replaced.
4) Check v-belts for wear.
MONTHLY
1) Inspect unit for leaks.
2) Tighten joints if leaks are observed.
3) Check v-belts for proper tension.
4) Check compressor pulley and engine
sheave are aligned and securely fastened.
QUARTERLY OR 300 HOURS (Whichever
comes first)
1) Inspect the air receiver for corrosion or
other damage.
2) Change compressor oil.
Page 14
MAINTENANCE
SCHEDULE

PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Will not start Please refer to Honda manual
included
Low pressure Safety valve leaks Replace safety valve
Drain cock open Close drain cock
Loose tubes or fittings Tighten fittings
Dirty or plugged air filter Clean or replace as necessary
Defective unloader valve Replace unloader valve
Oil in Too much oil in the crank- Drain oil and fill to proper level
Discharge case
Improper oil viscosity Drain and replace oil
Compressor overheated Air pressure regulated too
high
Restricted air filter Clean or replace air filter
Worn piston rings Replace piston rings
Compressor Dirty compressor head, cylin- Clean with compressed air
Overheats der or intercooler
Clogged inlet filter Clean or replace as necessary
Operating pressure too high Reduce operating pressure
Low oil or wrong oil being used Drain and replace oil
Compressor cycle too long. Allow for longer rest between
Proper cycle is 50-60% on Cycles
Stop/Start operation
Compressor Pilot valve differential adjust- Replace worn components as
loads & un- ed too close. necessary
loads or idols Make necessary adjustments
up & down Leaks in air system Check for leaks
excessively Worn or loose drive belts Tighten V-belts or replace
Defective compressor valves Replace valves
Compressor too small for Upgrade to larger compressor
intended use
Page 15
TROUBLE SHOOTING

PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Insufficient Clogged inlet filter Clean or replace as necessary
output, low Leaks in air lines, air valves, Replace worn components as
discharge fittings, etc. necessary
pressure Drive belts slipping. Tension V-belts
Drain valve left open Close drain valve
Defective pressure gauge Replace pressure gauge
Leaking head gasket
Replace head gasket
Dirty or plugged inter cooler Remove and clean inter cooler
tubes tubes
Unloader pilot adjusted too Make necessary adjustments
low, or defective
Worn or defective compressor Replace valves
valves
Worn piston work out rings Replace worn parts
Restrictive check valve Clean check valve and replace
if necessary
Compressor incorrectly sized Upgrade to larger compressor
Engine stalls Faulty unloader / check valve Replace unloader check valve
Low oil in engine Add oil to engine
Compressor not level Level compressor
Water in Cycle too short; compressor Allow for longer operating
crankcase does not operate long enough cycle
oil gets dirty, to vaporize condensed mois-
rusty valves ture during compression
or cylinders
Compressor operating out- Provide adequate protec-
side in cold conditions or inlet tion against extreme weather
filter not protected against conditions
weather
Page 16
TROUBLE SHOOTING

PROBLEM
System pressure leaking back Check and replace check
through check valve when valve if necessary
compressor is stopped.
Wrong oil being used Drain and replace with proper
oil
Excessive Loose compressor, engine or Tighten components
vibration engine guard
Compressor not level Level compressor
Leg bolts over tightened to Loosen leg bolts
floor
Excessive discharge pres- Reduce operating pressure
sure
Wrong oil being used Drain and replace with proper
oil
Loose flywheel, drive, pulley Tighten loose components and
or drive belts check belts
Worn connector rods, wrist Check and replace worn parts
pin or main bearings
Compressor Compressor valves loose or Check and replace worn or
Knocks broken broken valves
Check valve knocks at low Remove and clean check
pressure valve
Compressor Clogged inlet filter Clean inlet filter or replace as
uses too necessary
much oil Wrong oil being used, wrong Drain and replace oil
viscosity
Oil level too high Fill compressor with oil to
proper level
Crankcase breather valve Replace crankcase breather
malfunction
Compressor runs unloaded Increase load or stop compres-
too long sor when not needed. Check
for air leaks
Page 17
TROUBLE SHOOTING
POSSIBLE CAUSE
CORRECTIVE ACTION

PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Compressor operating out- Provide adequate protec-
side in cold conditions or inlet tion against extreme weather
filter not protected against conditions.
weather
Worn piston rings Replace piston rings
Piston rings not seated See below.
Piston rings Allow 100 hours of normal op-
not seated eration for new rings to seat.
DATE
Page 18
TYPE OF MAINTENANCE OR REPAIRS
TROUBLE SHOOTING
COMPRESSOR MAINTENANCE LOG

DATE
Page 19
COMPRESSOR MAINTENANCE LOG
TYPE OF MAINTENANCE OR REPAIRS

Page 20