Luowei OILFREE COMPRESSOR User manual

OPERATION MANUAL
OILFREE COMPRESSOR
CAUTION:
Before using this product, read this manual first.
INSTALLATION & ASSEMBLY
WARNING
The air compressor should be turned off and unplugged from the power source
before any installation and assembly is performed as well as the air bled from
the tank and the unit allowed time to cool. Personal injuries could occur from
moving parts, electrical sources, compressed air or hot surfaces.
To Install the Air Intake Filter
Remove the assembly from the poly bag and thread the filter assembly onto
the head of the compressor.
Installing wheels
Install one shoulder bolt, washer, and one nut for each wheel using bolt holes
provided in the wheel bracket. The shoulder bolt will install from the outside of
the wheel through the top hole in the wheel bracket. Tighten securely with the
washer and nut position on the inside of the wheel bracket.
WARNING
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 push
up a ramp.
CAUTION
It may be necessary to brace or support one end of the air compressor when
attaching the wheels, because it will have a tendency to tip.
Lubrication and Oil
This compressor requires no lubrication or oiling. No break in procedure is
required by the user. This product is factory tested to ensure proper operation
and performance.

HOW TO SET UP YOUR UNIT
Locate the air compressor in a clean, dry and well ventilated area. The air
compressor should be located at least 12" away from the wall or other
obstructions that will interfere with the flow of air. The air compressor pump
and shroud are designed to allow for proper cooling. The ventilation openings
on the compressor are necessary to maintain proper operating temperature.
Do not place rags or other containers on or near these openings. The air filter
must be kept clear of obstructions which could reduce air flow to air
compressor.
Extension Cord
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, be sure it is:
Voltage and circuit protection
Refer to the Parts Manual for the voltage and minimum branch circuit
requirements.
Certain air compressors can be operated on a 15 amp circuit if the following
conditions are met.
1. Voltage supply through branch circuit is 15 amps.
2. Circuit is not used to supply any other electrical needs (lights, appliances,
etc.)
3. Extension cords comply with specifications.
4. Circuit is equipped with a 15 amp circuit breaker or 15 amp time delay fuse.
NOTE: If compressor is connected to a circuit protected by fuses, use only
time delay fuses.
If any of the above conditions cannot be met, or if operation of the compressor
repeatedly causes interruption of the power, it may be necessary to operate it
from a 20 amp circuit. It is not necessary to change the cord set.

OPERATION
Know Your Air Compressor
READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE
OPERATING YOUR UNIT.
Compare the illustrations with your unit to familiarize yourself with the location
of various controls and adjustments. Save this manual for future reference.
Description of Operation
Become familiar with these controls before operating the unit.
On/Auto/Off Switch: Turn this switch ON to provide automatic power to the
pressure switch and OFF to remove power at the end of each use.
Pressure Switch: The pressure switch automatically starts the motor when
the air tank pressure drops below the factory set" cut-in" pressure. It stops the
motor when the air tank pressure reaches the factory set " cut-out" pressure
setting, the safety valve will protect against high pressure by "popping out" at
its factory set pressure
(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.
Tank Pressure Gauge: The tank pressure gauge indicates the reserve air
pressure in the tank.
Regulator: Controls the air pressure shown on the outlet pressure gauge.
Pull the knob out and turn clockwise to increase pressure and
counterclockwise to decrease pressure. When the desires pressure is reached
push knob in to lock in place.
Universal Quick-Connect Body: The universal quick-connect body accepts
the three most popular styles of quick-connect plugs: Industrial, automotive
(Tru-flate), and ARO. one hand push-to-connect operation makes connections
simple and easy.

Drain Valve: The drain valve is located at the base of the air tank and is used
to drain condensation at the end of each use.
Air Compressor Pump: Compressed air into the air tank. Working 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 Release Valve: The pressure release 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 or is shut off. The pressure release valve allows the motor to
restart freely. When the motor stops running, air will be heard escaping from
this valve for a few seconds. No air should be heard leaking when the motor is
running or after the unit reaches" cut-out" pressure.
Motor Overload Protector: The motor has an automatic reset thermal
overload protector. If the motor overheats for any reason, the overload
protector will shut off the motor. The motor must be allowed to cool down
before restarting. The compressor will automatically restart after the motor
cools. If the overload protector shuts the motor off frequently, check for a
possible voltage problem. Low voltage can also be suspected when:
1. The motor does not get up to full power or speed.
2. Fuses blow out when starting the motor; lights dim and remain dim when
motor is started and is running.
How To Stop
1. Set the On/Auto/Off level to "OFF".
Before First Start-up
WARNING
Serious damage may result if the following break-in instructions are not closely
followed.
This procedure is required before the air compressor is put into service and
when the check valve or a complete compressor pump has been replaced.

1. Make sure the On/Auto/Off lever is in the "OFF" position.
NOTE: If quick connect is installed, pull coupler back until it clicks to prevent
air from escaping through the quick connect.
2. Plug the power cord into the correct branch circuit receptacle. (Refer to
Voltage and Circuit Protection paragraph in the Installation section of this
manual.)
3. Open the drain valve fully (counterclockwise) to permit air to escape and
prevent air pressure build up in the air tank during the break-in period.
NOTE: Always drain tank on a washable surface or in a suitable container to
prevent damaging or staining surfaces.
4. Move the On/Auto/Off lever to " ON/AUTO" position. The compressor will
start.
5. Run the compressor for 15 minutes. Make sure the drain valve is open and
there is minimal air pressure build-up in tank.
6. After 15 minutes, close the drain valve (clockwise). The air receiver will fill to
"cut-out" pressure and the motor will stop.
The compressor is now ready for use.
Before Each Start-Up
1. Place On/Auto/Off lever to "OFF".
2. Pull regulator knob out. Turn counterclockwise until it stops. Push knob in to
lock in place.
3. Attach hose and accessories. NOTE: The hose or accessory will require a
quick connect plug if the air outlet is equipped with a quick connect.
WARNING
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.

How to Start
1. Turn the On/Auto/Off lever to "AUTO" and allow tank pressure to build.
Motor will stop when tank pressure reaches" cut-out" pressure.
2. Pull the regulator knob out and turn clockwise to increase pressure. When
the desired pressure is reached push knob in to lock in place. The compressor
is ready for use.
NOTE: Always operate the air compressor in well-ventilated areas free of
gasoline or other combustible vapors. If the compressor is being used to
operate a sprayer DO NOT place near the spray area.
MAINTENANCE
Customer Responsibilities
Before
each
use
Daily or
after
each
use
Frequently Yearly
Check safety valve ●
Drain tank ●
Air filter ●1
Air compressor pump
intake and exhaust valve ●
1-most frequent dusty or humid conditions
WARNING
Unit cycles automatically when power is on. When performing maintenance,
you may be exposed to voltage sources, compressed air, or moving parts.
Personal injuries can occur. Before performing any maintenance or repair,
disconnect power source from the compressor and bleed off all air pressure.
To ensure efficient operation and longer life of the air compressor outfit, a
routine maintenance schedule should be prepared and followed. The following
routine maintenance schedule is geared to an outfit 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 outfits in an extremely dirty and/or hostile environment will
required a greater frequency of all maintenance checks.
NOTE: See "Operation" section for the location controls.
To Check safety Valve
WARNING
If the safety valve does not work properly, over-pressurization may occur,
causing air tank rupture or an explosion.
1. Before starting compressor, pull the ring on the safety valve to make sure
that the safety valve operates freely. If the valve is stuck or does not operate
smoothly, it must be replaced with the same type of valve.
To Drain Tank
1. Set the On/Auto/Off lever to "OFF".
2. Pull the regulator knob out and turn clockwise to set the outlet pressure to
zero.
3. Remove the air tool or accessory.
4. Pull ring on safety valve allowing air to bleed from the tank until tank
pressure is approximately 20 psi. Release safety valve ring.
5. Drain water from air tank by opening drain valve (counter-clockwise) on
bottom of tank.
WARNING
Water will condense in the air tank. If not drained, water will corrode and
weaken air tank causing a risk of air tank rupture.
6. After the water has been drained, close the drain valve (clockwise). The air
compressor can now be stored.
NOTE: If drain valve is plugged, release all air pressure. The valve can then be
removed, cleaned, the reinstalled.
All Filter Inspection and Replacement

WARNING
Hot surfaces. Risk of burn. Compressor heads are exposed when filter cover is
removed. Allow compressor to cool prior to servicing.
CAUTION
Keep the air filter clean at all times. Do not operate the air compressor with the
air filter removed.
A dirty air filter will not allow the compressor pump to operate at full capacity.
Before you use the compressor pump, check the air filter to be sure it is clean
and in place.
If it is dirty, replace it with a new filter. On some models, the filter may be
removed by using a pair of needle nose pliers or a screwdriver. Pull or pry out
the old filter and carefully clean the filter area. Push in the new air filter.
SERVICE AND ADJUSTMENTS
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.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE
PERFORMED BY TRAINED SERVICE TECHNICIAN.
WARNING
Before servicing:
1. Unplug or disconnect electrical supply to the air compressor.
2. Bleed tank of pressure
3. Allow the air compressor to cool.

STORAGE
Before you store the air compressor, make sure you do the following:
1. Review the "Maintenance" section on the preceding pages and perform
scheduled maintenances as necessary.
2. Set the On/Auto/Off lever to "OFF".
3. Turn the regulator counterclockwise and set the outlet pressure to zero.
4. Remove the air tool or accessory.
5. Pull ring on safety valve allowing air to bleed from the tank until tank
pressure is approximately 20 psi. Release safety valve ring.
WARNING
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.
7. After the water has been drained, close the drain or drain valve can then be
removed, cleaned, then reinstalled.
8. Protect the electrical cord and air hose from damage (such as being stepped
on or run over). Wind them loosely around the compressor handle.
Store the air compressor in a clean and dry location.
Troubleshooting Guide
WARNING
The air compressor must be turned off and unplugged from the power source
before any problem correction or task is performed. Release the air from the
tank and allow the unit time to cool. Personal injuries could occur from moving
parts, electrical sources, compressed air, or hot surfaces.

PROBLEM POSSIBLE CORRECTION
Air leaks at the check valve or at the
pressure relief valve. A defective check valve results in a constant air leak at the pressure relief
valve when there is pressure in the
tank and the compressor is shut off.
Drain the tank, then remove and clean
or replace the check valve.
Air leaks from safety valve Operate the safety valve manually by
pulling on the ring. If the valve
continues to leak when in the closed
position, it should be replaced.
Pressure reading on the regulator
pressure gauge drops when an
accessory is used.
If there is an excessive amount of
pressure drop when the accessory is
used, replace the regulator.
NOTE:
Adjust the regulated pressure under
flow conditions (While accessory is
being used). It is normal for the gauge
to show minimal pressure loss during
initial use of tool.
Excessive tank pressure. Move the Auto-On/Off lever to the off
position. If the unit doesn't shut off,
unplug it from the power source and
contact a service technician.
Motor no start. Make sure power cord is plugged in
and the switch is on. Inspect for the
proper size fuse in your circuit box. If
the fuse was tripped, reset it and
restart the unit.
If repeated tripping occurs contact a
service technician.
Excessive moisture in the discharge
air. Remove the water in the tank by draining after each use. High humidity
environments will cause excessive
condensation. Utilize water filters on
your air line.
Air leaks from the tank body or tank
welds. Never drill into, weld or otherwise modify the air tank or it will weaken.
The tank can rupture or explode.
Compressor cannot be repaired.
Discontinue use of the air
compressor.