Ingersoll-Rand P1.5IU-A9 User manual

80444425
Revision D
December 2020
Save These Instructions
Models P1.5IU-A9 & P1.5IU-A9-H
Owner’s Manual
Manual del usuario
ES
Manuel de l’utilisateur
FR
Owner’s Manual
EN

EN
EN-2 80444425 Rev. D
CONTENTS
ENGLISH
SAFETY .............................................. 3
DEFINITIONS...........................................3
GENERAL SAFETY PRECAUTIONS.......................3
GENERAL INFORMATION .............................. 3
PREPARATION FOR USE ............................... 3
TRANSPORTING THE UNIT..............................3
SELECTING A LOCATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLING THE AIR INLET FILTER ......................4
INSTALLING DISCHARGE PIPING........................4
ELECTRICAL WIRING & GROUNDING....................4
COMPRESSOR LUBRICATION ...........................5
OPERATION .......................................... 6
GENERAL ..............................................6
NORMAL STARTUP ....................................6
SHUTDOWN ...........................................6
MAINTENANCE ....................................... 7
FILTER REPLACEMENT ..................................7
COMPRESSOR PUMP OIL CHANGE......................7
BELT ADJUSTMENT ................................. 8
TANK INSPECTION .....................................8
TROUBLESHOOTING .................................. 9
PARTS LIST ..........................................12
REPAIR KITS ...........................................16
WARRANTY .........................................17
SPANISH
SEGURIDAD .........................................18
DEFINICIONES ........................................18
PRECAUCIONES GENERALES DE SEGURIDAD .........18
INFORMACIONES GENERALES ........................18
PREPARACIÓN PARA USO ............................18
TRANSPORTE DE LA UNIDAD T ........................18
SELECCIÓN DE UNA UBICACIÓN ......................18
INSTALACIÓN DEL FILTRO DE ENTRADA DE AIRE ......19
INSTALACIÓN DE TUBERÍA DE DESCARGA .............19
CABLEADO ELÉCTRICO Y CONEXIÓN A TIERRA.........19
LUBRICACIÓN DEL COMPRESOR.......................20
OPERACIÓN .........................................21
GENERALIDADES......................................21
ARRANQUE NORMAL .................................21
PARADA...............................................21
MANTENIMIENTO....................................22
REEMPLAZO DEL FILTRO ..............................22
CAMBIO DEL ACEITE DE LA BOMBA DEL
COMPRESOR ....................................22
AJUSTE DE LA CORREA ............................23
INSPECCIÓN DEL TANQUE RECEPTOR .................23
LOCALIZACIÓN DE FALLAS ...........................24
PARTS LIST ..........................................27
REPAIR KITS ...........................................31
GARANTIA ..........................................32
FRENCH
SÉCURITÉ ...........................................33
DÉFINITIONS..........................................33
PRÉCAUTIONS DE SÉCURITÉ GÉNÉRALES ..............33
INFORMATIONS GÉNÉRALES .........................33
PRÉPARATION POUR L’UTILISATION...................33
TRANSPORTATION DU COMPRESSEUR
SÉLECTION DE L’ENDROIT ............................33
INSTALLATION DE LA CANALISATION DE
REFOULEMENT ......................................34
CÂBLAGE ÉLECTRIQUE ET MISE À TERRE ..............34
LUBRIFICATION DU COMPRESSEUR....................35
OPÉRATION .........................................36
GÉNÉRALITÉS .........................................36
DÉMARRAGE NORMAL ................................36
ARRÊT ................................................36
ENTRETIEN..........................................37
REMPLACEMENT DU FILTRE ...........................37
VIDANGE D’HUILE DE LA POMPE DU COMPRESSEUR ..37
AJUSTEMENT DE LA COURROIE.....................38
INSPECTION DU RÉSERVOIR ..........................38
DÉPANNAGE ........................................39
PARTS LIST ..........................................42
REPAIR KITS ...........................................46
GARANTIE ..........................................47

EN
80444425 Rev. D EN-3
DEFINITIONS
DANGER WILL cause DEATH, SEVERE
INJURY or substantial property
damage.
WARNING CAN cause DEATH, SEVERE
INJURY or substantial property
damage.
CAUTION WILL or CAN cause MINOR
INJURY or property damage.
GENERAL SAFETY PRECAUTIONS
DANGER
INTAKE AIR. Can contain carbon monoxide or other
contaminants. Will cause serious injury or death. Ingersoll
Rand air compressors are not designed, intended or approved
for breathing air. Compressed air should not be used for
breathing air applications unless treated in accordance with
all applicable codes and regulations.
WARNING
HAZARDOUS VOLTAGE - Can cause serious injury or death.
Disconnect power and bleed pressure from tank before
servicing. Lockout/Tagout machine. Compressor must be
connected to properly grounded circuit. See grounding
instructions in manual. Do not operate compressor in wet
conditions. Store indoors.
MOVING PARTS - Can cause serious injury. Do not operate with
guards removed. Machine may start automatically. Disconnect
power before servicing. Lockout/Tagout machine.
HOT SURFACES - Can cause serious injury. Do not touch. Allow
to cool before servicing. Do not touch hot compressor or
tubing.
HIGH PRESSURE AIR - Bypassing, modifying or removing
safety/relief valves can cause serious injury or death. Do not
bypass, modify or remove safety/relief valves. Do not direct air
stream at body. Rusted tanks can cause explosion and severe
injury or death. Drain tank daily or after each use. Drain valve
located at bottom of tank.
CAUTION
RISK OF BURSTING - Use only suitable air handling parts
acceptable for pressure of not less than the maximum
allowable working pressure of the machine.
SAFETY
GENERAL INFORMATION
Your air compressor unit is suitable for operating air tools, caulking
guns, grease guns, sandblasters, etc. Depending on your application,
the following accessories may be required:
•An air pressure regulator to adjust the air pressure entering the
tool or accessory.
•An air line lter for removal of moisture and oil vapor in
compressed air.
•An in-line lubricator to prolong the life of air tools.
•Separate air transformers which combine the functions of air
regulation and/or moisture and dirt removal.
Contact your nearest authorized dealer or call 1-800-AIR-SERV for
more information on air tools and accessories for your application.
PREPARATION FOR USE
TRANSPORTING THE UNIT
CAUTION
The wheels and handle do not provide adequate clearance,
stability or support for pulling the unit up and down stairs or
steps. The unit must be lifted or pushed up a ramp. Do not use
the handle to lift the unit.
SELECTING A LOCATION
GENERAL - Select a clean, dry, well-lighted area with plenty of space
for proper cooling air ow and accessibility. Locate the unit on a
solid level surface at least 12 inches (30 cm) from walls. Ensure unit is
as level as possible.
TEMPERATURE - Ideal operating temperatures are between 32°F
and 104°F (0°C and 40°C). In lower temperatures, you must protect
safety/relief valves and drain valves from freezing.
CAUTION
Never operate in temperatures below 20°F (-6.6°C) or above
125°F (51.0°C).
HUMID AREAS - In frequently humid areas, moisture may form in
the bare pump and produce sludge in the lubricant, causing running
parts to wear out prematurely. Excessive moisture is especially likely
to occur if the unit is located in an unheated area that is subject to
large temperature changes. Two signs of excessive humidity are
external condensation on the bare pump when it cools down and
a“milky” appearance in petroleum compressor lubricant. You may
be able to prevent moisture from forming in the bare pump by
increasing ventilation or operating for longer intervals.
NOISE CONSIDERATIONS - Consult local ocials for information
regarding acceptable noise levels in your area. To reduce excessive
noise, use vibration mounts or intake silencers, relocate the unit or
construct total enclosures or bae walls.
Contact your dealer for assistance.

EN
EN-4 80444425 Rev. D
INSTALLING THE AIR INLET FILTER
CAUTION
Do not operate without air inlet lter.
Install the air inlet lters at the inlet connections at the bare pump. If
heavy duty ltration is required, contact your dealer for information.
INSTALLING DISCHARGE PIPING
If it is necessary to install air discharge piping or condensate
discharge piping, adhere to the following general guidelines.
Contact your dealer for more information.
WARNING
If an aftercooler, check valve, block valve, or any other
restriction is added to the compressor discharge, install a
properly-sized ASME approved safety/relief valve between the
compressor discharge and the restriction.
CAUTION
If you will be using All Season Select synthetic compressor
lubricant, all downstream piping material and system
components must be compatible. Refer to the following
material compatibility list. If there are incompatible materials
present in your system, or if there are materials not included
in the list, contact your dealer.
Suitable:
Viton®, Teon®, Epoxy (Glass Filled), Oil Resistant Alkyd, Fluorosilicone,
Fluorocarbon, Polysulde, 2-Component Urethane, Nylon, Delrin®,
Celcon®, High Nitrile Rubber (Buna N. NBR more than 36% Acrylonitrile),
Polyurethane, Polyethylene, Epichlorohydrin, Polyacrylate, Melamine,
Polypropylene, Baked Phenolics, Epoxy, Modied Alkyds
(® indicates trademark of DuPont Corporation)
Not Recommended:
Neoprene, Natural Rubber, SBR Rubber, Acrylic Paint, Lacquer, Varnish,
Polystyrene, PVC, ABS, Polycarbonate, Cellulose Acetate, Low Nitrile Rubber
(Buna N. NBR less than 36% Acrylonitrile), EPDM, Ethylene Vinyl Acetate,
Latex, EPR, Acrylics, Phenoxy, Polysulfones, Styrene Acrylonitrile (San), Butyl
GENERAL REQUIREMENTS - The piping, ttings, receiver tank, etc.
must be certied safe for at least the maximum working pressure of
the unit. Use hard-welded or threaded steel or copper pipes, cast
iron ttings and hoses that are certied safe for the unit’s discharge
pressure and temperature. DO NOT USE PVC PLASTIC. Use pipe
thread sealant on all threads, and make up joints tightly to prevent
air leaks.
CONDENSATE DISCHARGE PIPING - If installing a condensate
discharge line, the piping must be at least one size larger than the
connection, as short and direct as possible, secured tightly and
routed to a suitable drain point. Condensate must be disposed of in
accordance with local, state, and federal laws and regulations.
NOTE: All compressed air systems generate condensate which
accumulates in any drain point (e.g. tanks, lters, drip legs,
aftercoolers, dryers). This condensate contains lubricating oil and/
or substances which may be regulated and must be disposed of in
accordance with local, state, and federal laws and regulations.
ELECTRICAL WIRING & GROUNDING
WARNING
Any electrical installation and service required should be
performed by a qualied electrician who is familiar with all
applicable local, state and federal laws and regulations.
GENERAL - The motor rating, as shown on the motor nameplate,
and the power supply must have compatible voltage, phase and
hertz characteristics.
FUSES - . Refer to the National Electric Code to determine the
proper fuse or circuit breaker rating required. When selecting fuses,
remember the momentary starting current of an electric motor is
greater than its full load current. Time-delay or “slow-blow” fuses are
recommended.
GROUNDING - The unit is equipped with a power cord having a
grounding wire an 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 conguration as the plug. DO NOT USE AN ADAPTER.
WARNING
In the event of a short circuit, grounding reduces the risk of
shock by providing an escape for the electric current. The unit
must be properly grounded.
DANGER
Improper installation of the grounding plug can result in a
risk of electric shock. If repair or replacement of the cord or
plug is necessary, do not connect the grounding wire to either
at blade terminal. The wire with insulation having an outer
surface that is green with or without yellow stripes is the
grounding wire.
Check with a qualied electrician or serviceman if the grounding
instructions are not completely understood, or if in doubt as to
whether the product is properly grounded. Do not modify the plug
provided; if it will not t the outlet, have the proper outlet installed
by a qualied electrician.
This product is for use on a nominal 120-volt circuit and has a
grounding plug that looks like the plug illustrated below. Make sure
the product is connected to an outlet having the same conguration
as the plug. No adapter should be used with this product.
A=Ground
B=Grounding Pin
C=Outlet

EN
80444425 Rev. D EN-5
EXTENSION CORDS - It is preferable to use extra air hose instead
of an extension cord to avoid voltage drop and power loss to the
motor, and to prevent overheating. If an extension cord must be
used, ensure it meets the following criteria:
•Three wire cord with a three blade grounding plug, and a three
slot receptacle that will accept the plug on the unit.
•Good condition.
•No longer than 50 feet.
•12 gauge or larger.
NOTE - Wire size increases as gauge number decreases. For example,
10 AWG and 8 AWG wire is acceptable, whereas 14 or 16 AWG are
NOT acceptable.
COMPRESSOR LUBRICATION
CAUTION
Do not operate without lubricant or with inadequate
lubricant. Ingersoll Rand is not responsible for compressor
failure caused by inadequate lubrication.
SYNTHETIC LUBRICANT - We recommend All Season Select
synthetic compressor lubricant from start-up. See the WARRANTY
section for extended warranty information.
ALTERNATE LUBRICANTS - You may use a petroleum-based
lubricant that is premium quality, does not contain detergents,
contains only anti-rust, anti-oxidation, and anti-foam agents as
additives, has a ashpoint of 440°F (227°C) or higher, and has an
auto-ignition point of 650°F (343°C) or higher.
See the petroleum lubricant viscosity table below. The table is
intended as a general guide only. Heavy duty operating conditions
require heavier viscosities. Refer specic operating conditions to
your dealer for recommendations.
Temperature Around
Unit
Viscosity @ 100°F
(37.8°C)
Viscosity
Grade
°F °C SUS Centistoke ISO SAE
40 & below 4.4 & below 150 32 32 10
40 - 80 4.4 - 26.7 500 110 100 30
80 - 125 26.7 - 51.0 750 165 150 40
If you use a petroleum-based compressor lubricant at start-up
and decide to convert to All Season Select synthetic compressor
lubricant later on, the compressor valves must be thoroughly
decarbonized and the crankcase must be ushed before conversion.
COMPRESSOR PUMP FILLING PROCEDURES:
WARNING
HAZARDOUS VOLTAGE - Can cause serious injury or death.
Disconnect power and Lockout/Tagout machine.
1. Unscrew and remove the oil ll plug (A).
2. Slowly ll the crankcase with lubricant until the lubricant
reaches the“full” level of the sight glass as shown. Crankcase
capacity is one (1) pint (0.5 liters).
3. Replace the oil ll plug HAND TIGHT ONLY.
Filling Procedures

EN
EN-6 80444425 Rev. D
GENERAL
Your air compressor was designed for 100% continuous duty
operation with the use of All Season Select synthetic compressor
lubricant and 60% continuous duty operation with the use of
petroleum lubricant. In other words, synthetic lubricant allows
the compressor to pump continuously without cycling. Petroleum
lubricant limits the compressor to a maximum of 36 minutes of
pumping time per hour. The compressor should not cycle more than
10 times per hour.
NORMAL START-UP
1. Set the pressure switch lever to“OFF”.
Pressure Switch Lever
2. Close the regulator by turning it fully counterclockwise (-).
Regulator
3. Attach hose and accessory.
4. Move the pressure switch lever to “ON/AUTO”. The unit will start.
5. Allow tank pressure to build. The motor will stop when tank
pressure reaches cut-out pressure.
6. Adjust the regulator to the desired secondary pressure
by turning it clockwise (+) to increase the pressure or
counterclockwise (-) to decrease the pressure.
Note - When the receiver tank pressure drops below the factory pre-
set minimum, the pressure switch resets and restarts the unit.
SHUTDOWN
1. Set the pressure switch lever to“OFF”.
2. Close the service valve fully.
3. Remove the air tool or accessory.
4. Slowly open the service valve to bleed air pressure down to 20
psig.
5. Slowly open the manual drain valve at the bottom of the tank
to drain all condensate (water).
6. Close the drain valve and the service valve for the next use.
7. Wrap the power cord rmly around the handle.
8. Store the unit indoors.
9.
OPERATION

EN
80444425 Rev. D EN-7
WARNING
Unplug the unit and release air pressure from the tank before
performing maintenance.
WARNING
Wear appropriate personal safety equipment such as safety
glasses and gloves.
Note - All compressed air systems contain maintenance
parts (e.g. lubricating oil, lters, separators) which are
periodically replaced. These used parts may be, or may
contain, substances that are regulated and must be
disposed of in accordance with local, state, and federal
laws and regulations.
Take note of the positions and locations of parts during
disassembly to make reassembly easier. The assembly
sequences and parts illustrated may dier for your
particular unit.
Follow engine owner’s manual for engine maintenance
schedules and procedures.
Any service operations not included in this section should
be performed by an authorized service representative.
ROUTINE MAINTENANCE SCHEDULE
Daily or Before Check lubricant level. Fill as needed.
Each Operation Drain receiver tank condensate. Open the
manual drain valve and collect and dispose of
condensate accordingly.
Check for unusual noise and vibration.
Ensure and covers are securely in place.
Ensure area around compressor is free from
rags, tools, debris, and ammable or explosive
materials.
Weekly Inspect air lter element. Clean or replace if
necessary.
Monthly Inspect for air leaks. Squirt soapy water around
joints during compressor operation and watch
for bubbles.
Check tightness of screws and bolts. Tighten
as needed.
Clean exterior.
3/500 * Change petroleum lubricant while crankcase
is warm.
12/2000 * Change synthetic lubricant while crankcase is
warm.
Replace lter element.
FILTER REPLACEMENT
1. Unscrew and remove the wing nut (A).
2. Remove the lter cover (B) and element (C) from the base (D).
3. Install a new element and reassemble the lter assembly.
Filter Replacement
COMPRESSOR PUMP OIL CHANGE
1. Remove the oil drain plug (A) and allow the lubricant to drain
into a suitable container.
2. Replace the oil drain plug.
Follow the lling procedures in PREPARATION FOR USE section.
Compressor Pump Oil Change
MAINTENANCE

EN
EN-8 80444425 Rev. D
BELT ADJUSTMENT
CHECKING BELT TENSION - Check belt tension occasionally,
especially if looseness is suspected. A quick check to determine if
adjustment is proper may be made by observing the slack side of
the belt for a slight bow when the unit is in operation. If a slight bow
is evident, the belt is usually adjusted satisfactorily.
TENSIONING BELTS - Belt tensioning can be achieved by loosening
the motor anchor screws, pushing the motor away from the pump,
and retightening the motor anchor screws. The motor can be easily
moved by placing a prying tool beneath it. A commercially available
spreader or other belt tensioning device can also be helpful should
tensioning be necessary.
Follow the procedures outlined below to correctly set and measure
belt tension.
1. Lay a straight edge across the top outer surface of the belt drive
from pulley to sheave.
2. At the center of the span, perpendicular to the belt, apply
pressure to the outer surface of the belt with a tension gauge.
Force the belt to the deection indicated in the table at right.
Compare the reading on the tension gauge to the table below.
Deection in Inches Min. Tension (Lbs.) Max. Tension (Lbs.)
0.17 3.0 6.0
Ensure the pulley and sheave are properly aligned and the motor
anchor screws are adequately retightened prior to restarting the
compressor.
CAUTION
Improper pulley/sheave alignment and belt tension can result
in motor overload, excessive vibration, and premature belt
and/or bearing failure.
To prevent these problems from occurring, ensure the pulley
and sheave are aligned and belt tension is satisfactory after
installing new belts or tensioning existing belts.
TANK INSPECTION
The life of an air receiver tank is dependent upon several factors
including, but not limited to, operating conditions, ambient
environments, and the level of maintenance. The exact eect of
these factors on tank life is dicult to predict; therefore, Ingersoll
Rand recommends that you schedule a certied tank inspection
within the rst ve years of compressor service. To arrange a tank
inspection, contact the nearest Ingersoll Rand Customer Center or
distributor, or call 1-800-AIR SERV.
If the tank has not been inspected within the rst 10 years of
compressor service, the receiver must be taken out of service until it
has passed inspection. Tanks that fail to meet requirements must be
replaced.
WARNING
Failure to replace a rusted air receiver tank could result in
air receiver tank rupture or explosion, which could cause
substantial property damage, severe personal injury, or death.
Never modify or repair tank. Obtain replacement from service
center.

EN
80444425 Rev. D EN-9
PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION
Abnormal piston, ring
or cylinder wear
Lubricant viscosity too low. Drain existing lubricant and rell with proper lubricant.
Lubricant level too low. Add lubricant to crankcase to proper level.
Detergent type lubricant being used. Drain existing lubricant and rell with proper lubricant.
Cylinder(s) or piston(s) scratched, worn or
scored. Repair or replace as required.
Extremely dusty atmosphere. Install remote air inlet piping and route to source of cleaner
air. Install more eective ltration.
Worn cylinder nish. Deglaze cylinder with 180 grit ex-hone.
Air delivery drops o
Clogged or dirty inlet and/or discharge line lter. Clean or replace.
Air leaks in air discharge piping. Check tubing and connections.
Lubricant viscosity too high. Drain existing lubricant and rell with proper lubricant.
Compressor valves leaky, broken, carbonized or
loose. Inspect valves. Clean or replace as required. Install valve kit.
Piston rings damaged or worn (broken, rough or
scratched). Excessive end gap or side clearance. Install ring kit.
Piston rings not seated, are stuck in grooves or
end gaps not staggered. Adjust piston rings.
Cylinder(s) or piston(s) scratched, worn or
scored. Repair or replace as required.
Defective safety/relief valve. Replace.
Unit does not come up
to speed
Loose beltwheel or motor pulley, excessive end
play in motor shaft or loose drive belts.
Check beltwheel, motor pulley, crankshaft, drive belt tension
and alignment. Repair or replace as required.
Lubricant viscosity too high. Drain existing lubricant and rell with proper lubricant.
Improper line voltage. Check line voltage and upgrade lines as required. Contact
electrician.
Compressor valves leaky, broken, carbonized or
loose. Inspect valves. Clean or replace as required. Install valve kit.
Defective ball bearings on crankshaft or motor
shaft.
Inspect bearings and replace crankshaft assembly if
required.
Unit is slow to come up
to speed
Lubricant viscosity too high. Drain existing lubricant and rell with proper lubricant.
Leaking check valve or check valve seat blown
out. Replace check valve.
Ambient temperature too low. Relocate unit to warmer environment. Install crankcase
heater kit.
Bad motor. Replace.
Unit runs excessively
hot
Inadequate ventilation around beltwheel. Relocate unit for better air ow.
Drive belts too tight or misaligned. Adjust belts to proper tension and alignment.
Compressor valves leaky, broken, carbonized or
loose. Inspect valves. Clean or replace as required. Install valve kit.
Wrong beltwheel direction of rotation. Check motor wiring for proper connections. Reverse two
leads on three-phase motors.
Excessive noise during
operation
Loose beltwheel or motor pulley, excessive end
play in motor shaft or loose drive belts.
Check beltwheel, motor pulley, crankshaft, drive belt tension
and alignment. Repair or replace as required.
Lubricant viscosity too high. Drain existing lubricant and rell with proper lubricant.
Lubricant level too low. Add lubricant to crankcase to proper level.
Compressor valves leaky, broken, carbonized or
loose. Inspect valves. Clean or replace as required. Install valve kit.
Carbon build-up on top of piston(s). Clean piston(s). Repair or replace as required.
Defective ball bearings on crankshaft or motor
shaft.
Inspect bearings and replace crankshaft assembly if
required.
Leaking check valve or check valve seat blown
out. Replace check valve.
TROUBLESHOOTING

EN
EN-10 80444425 Rev. D
PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION
Excessive starting and
stopping
Air leaks in air discharge piping. Check tubing and connections.
Pressure switch dierential too narrow.
Adjust pressure switch to increase dierential, if dierential
adjustment is provided. Install pressure switch with
dierential adjustment feature if dierential adjustment is
desired.
Leaking check valve or check valve seat blown
out. Replace check valve.
Excessive condensate in receiver tank. Drain receiver tank with manual drain valve.
High oil consumption
Clogged or dirty inlet and/or discharge line lter. Clean or replace.
Lubricant viscosity too low. Drain existing lubricant and rell with proper lubricant.
Detergent type lubricant being used. Drain existing lubricant and rell with proper lubricant.
Piston rings damaged or worn (broken, rough or
scratched). Excessive end gap or side clearance. Install ring kit.
Piston rings not seated, are stuck in grooves or
end gaps not staggered. Adjust piston rings.
Cylinder(s) or piston(s) scratched, worn or
scored. Repair or replace as required.
Connecting rod, piston pin or crankpin bearings
worn or scored. Inspect all. Repair or replace as required.
Crankshaft seal worn or crankshaft scored. Replace seal or crankshaft assembly.
Worn cylinder nish. Deglaze cylinder with 180 grit ex-hone.
Knocking or rattling
Loose beltwheel or motor pulley, excessive end
play in motor shaft or loose drive belts.
Check beltwheel, motor pulley, crankshaft, drive belt tension
and alignment. Repair or replace as required.
Compressor valves leaky, broken, carbonized or
loose. Inspect valves. Clean or replace as required. Install valve kit.
Carbon build-up on top of piston(s). Clean piston(s). Repair or replace as required.
Cylinder(s) or piston(s) scratched, worn or
scored. Repair or replace as required.
Connecting rod, piston pin or crankpin bearings
worn or scored. Inspect all. Repair or replace as required.
Defective ball bearings on crankshaft or motor
shaft.
Inspect bearings and replace crankshaft assembly if
required.
Lights icker or dim
when running
Improper line voltage. Check line voltage and upgrade lines as required. Contact
electrician.
Wiring or electric service panel too small. Install properly sized wire or service box. Contact electrician.
Poor contact on motor terminals or starter
connections.
Ensure good contact on motor terminals or starter
connections.
Improper starter overload heaters. Install proper starter overload heaters. Contact electrician.
Poor power regulation (unbalanced line). Contact power company.
Moisture in crankcase
or “milky” appearance
in petroleum lubricant
or rusting in cylinders
Detergent type lubricant being used. Drain existing lubricant and rell with proper lubricant.
Extremely light duty cycles. Run unit for longer duty cycles.
Unit located in damp or humid location. Relocate unit.