Oil-Free
Air Compressor
(66-651-1)
INSTRUCTION MANUAL
To learn more about DELTA MACHINERY
visit our website at: www.deltamachinery.com.
For Parts, Service, Warranty or other Assistance,
please call
1-866-422-4286.
PART NO. A08184 Rev. 0
Copyright © 2004 Delta Machinery
ESPAÑOL: PÁGINA 27
FRANÇAIS: PAGE 53
SAFETY GUIDELINES - DEFINITIONS
This manual contains information that is important for you to know and
understand. This information relates to protecting YOUR SAFETY and
PREVENTING EQUIPMENT PROBLEMS. To help you recognize this
information, we use the symbols below. Please read the manual and pay
attention to these symbols.
Indicates an
imminently hazardous
situation which, if not avoided,
in death or serious injury.
will result
which, if not avoided,
or moderate injury.
Indicates a potentially
hazardous situation
may result in minor
Indicates a potentially
hazardous situation
which, if not avoided,
death or serious injury.
could result in
indicates a potentially hazardous situation
which, if not avoided,
property damage
Used without the
safety alert symbol
may result in
.
IMPORTANT SAFETY INSTRUCTIONS
Some dust created by power sanding, sawing, grinding,
chemicals known (to the State of California) to cause cancer, birth defects
or other reproductive harm. Some example of these chemicals are:
• lead from lead-based paints
• crystalline silica from bricks and cement and other masonry products
• arsenic and chromium from chemically-treated lumber
Your risk from these exposures varies, depending on how often you do
this type of work. To reduce your exposure to these chemicals: work in
a well ventilated area, and work with approved safety equipment, always
wear MSHA/NIOSH approved, properly fitting face mask or respirator when
using such tools.
When using air tools, basic safety precautions should always be followed
to reduce the risk of of personal injury.
drilling, and other construction activities contains
A08184
2- ENG
IMPORTANT SAFETY INSTRUCTIONS
Save these instructions
Improper operation or maintenance of this product could result in serious injury and
property damage. Read and understand all warnings and operation instructions before
using this equipment.
HAZARD
WARNING: Risk of explosion or fire
What Could Happen
It is normal for electrical contacts within
the motor and pressure switch to spark.
If electrical sparks from compressor
come into contact with flammable
vapors, they may ignite, causing fire or
explosion.
Restricting any of the compressor
ventilation openings will cause serious
overheating and could cause fire.
Unattended operation of this product
could result in personal injury or
property damage. To reduce the risk
of fire, do not allow the compressor to
operate unattended.
How To Prevent It
Always operate the compressor in a
well ventilated area free of combustible
materials, gasoline, or solvent vapors.
If spraying flammable materials, locate
compressor at least 20 feet away from
spray area. An additional length of hose
may be required.
Store flammable materials in a secure
location away from compressor.
Never place objects against or on top of
compressor. Operate compressor in an
open area at least 12 inches away from
any wall or obstruction that would restrict
the flow of fresh air to the ventilation
openings.
Operate compressor in a clean, dry well
ventilated area.
indoors or in any confined area.
Always remain in attendance
product when it is operating.
Always disconnect electrical power by
moving pressure switch lever to the off
position and drain tank daily or after
each use.
Do not operate unit
with the
3- ENG
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HAZARD
WARNING: Risk of Bursting
Air Tank: The following conditions could lead to a weakening of the tank, and result
in a violent tank explosion and could cause property damage or serious injury.
What Could Happen
Failure to properly drain condensed
water from tank, causing rust and
thinning of the steel tank.
Modifications or attempted repairs to
the tank.
Unauthorized modifications to the
unloader valve, safety valve, or any
other components which control tank
pressure.
Excessive vibration can weaken the
air tank and cause rupture or
explosion
ATTACHMENTS & ACCESSORIES:
Exceeding the pressure rating of air
tools, spray guns, air operated
accessories, tires, and other inflatables
can cause them to explode or fly apart,
and could result in serious injury.
HAZARD
How To Prevent It
Drain tank daily or after each use. If tank
develops a leak, replace it immediately
with a new tank or replace the entire
compressor.
Never drill into, weld, or make any
modifications to the tank or its
attachments.
The tank is designed to withstand specific
operating pressures. Never make
adjustments or parts substitutions to
alter the factory set operating
pressures.
For essential control of air pressure,
must install a pressure regulator and
pressure gauge to the air outlet (if not
equipped) of your compressor. Follow the
equipment manufacturers recommendation
and never exceed the maximum allowable
pressure rating of attachments. Never use
compressor to inflate small low
pressure objects such as children’s
toys, footballs, basketballs, etc.
you
WARNING: Risk from Flying Objects
What Could Happen
The compressed air stream can cause
soft tissue damage to exposed skin
can propel dirt, chips, loose particles
and small objects at high speed,
resulting in property damage or personal
injury.
A08184
How To Prevent It
Always wear ANSI Z87.1 approved
safety glasses with side shields when
and
using the compressor.
,
Never point
toward any part of the body or at other
people or animals.
Always turn the compressor off and
bleed pressure from the air hose and tank
before attempting maintenance, attaching
tools or accessories.
4- ENG
any nozzle or sprayer
HAZARD
WARNING: Risk of Electrical Shock
What Could Happen
Your air compressor is powered by
electricity. Like any other electrically
powered device, If it is not used
properly it may cause electric shock.
Repairs attempted by unqualified
personnel can result in serious injury
or death by electrocution.
Electrical Grounding: Failure to provide
adequate grounding to this product
could result in serious injury or death
from electrocution.
See grounding instructions.
HAZARD
WARNING: Risk to Breathing
What Could Happen
The compressed air directly from your
compressor is not safe for breathing.
The air stream may contain carbon
monoxide, toxic vapors, or solid
particles from the tank. Breathing these
contaminants can cause serious injury
or death.
Sprayed materials such as paint, paint
solvents, paint remover, insecticides,
weed killers, may contain harmful
vapors and poisons.
How To Prevent It
Never operate the compressor
when it is raining or in wet conditions.
Never operate compressor with
protective covers removed or damaged.
Any electrical wiring or repairs required
on this product should be performed by
authorized service center personnel in
accordance with national and local
electrical codes.
Make certain that the electrical circuit
to which the compressor is connected
provides proper electrical grounding,
correct voltage and adequate fuse
protection.
How To Prevent It
Air obtained directly from the compressor
should never be used to supply air for
human consumption. In order to use air
produced by this compressor for
breathing, suitable filters and in-line
safety equipment must be properly
installed. In-line filters and safety
equipment used in conjunction with the
compressor must be capable of treating
air to all applicable local and federal
codes prior to human consumption.
Work in an area with good cross
ventilation. Read and follow the safety
instructions provided on the label or
safety data sheets for the materials
you are spraying. Use a NIOSH/MSHA
approved respirator designed for use
with your specific application.
outdoors
5- ENG
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HAZARD
WARNING: Risk of Burns
What Could Happen
Touching exposed metal such as the
compressor head or outlet tubes, can
result in serious burns.
HAZARD
WARNING: Risk from Moving Parts
What Could Happen
Moving parts such as the pulley,
flywheel, and belt can cause serious
injury if they come into contact with you
or your clothing.
Attempting to operate compressor
damaged or missing parts or
attempting to repair compressor with
protective shrouds removed can expose
you to moving parts and can result in
serious injury.
with
HAZARD
How To Prevent It
Never touch any exposed metal parts
on compressor during or immediately
after operation. Compressor will remain
hot for several minutes after operation.
Do not reach around protective shrouds
or attempt maintenance until unit has
been allowed to cool.
How To Prevent It
Never operate the compressor with
guards or covers which are damaged or
removed.
Any repairs required on this product
should be performed by authorized
service center personnel.
WARNING: Risk of Falling
A portable compressor can fall from
a table, workbench, or roof c
damage to the compressor and could
result in serious injury or death to the
operator.
A08184
ausing
How To Prevent ItWhat Could Happen
Always operate compressor in a stable
secure position to prevent accidental
movement of the unit. Never operate
compressor on a roof or other elevated
position. Use additional air hose to
reach high locations.
6- ENG
HAZARD
WARNING: Risk of Serious Injury or Property Damage
When Transporting Compressor
(Fire, Inhalation, Damage to Vehicle Surfaces)
What Could Happen
Oil can leak or spill and could result in
fire or breathing hazard; serious injury or
death can result. oil leaks will damage
carpet, paint or other surfaces in vehicles
or trailers.
HAZARD
WARNING: Risk of Unsafe Operation
How To Prevent It
Always place COMPRESSOR on a
protective mat when transporting to
protect against damage to vehicle from
leaks. Remove COMPRESSOR from
vehicle immediately upon arrival at your
destination.
What Could Happen
Unsafe operation of your air compressor
could lead to serious injury or death to
you or others.
SAVE THESE INSTRUCTIONS
How To Prevent It
Review and understand all instructions
and warnings in this manual.
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.
.
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A08184
GLOSSARY
Become familiar with these terms before operating the unit.
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.
Code Certification: Products that bear one or more of the following marks: UL,
CUL, ETL, CETL, have been evaluated by OSHA certified independent safety
laboratories and meet the applicable Underwriters Laboratories Standards for
Safety.
Cut-In Pressure: While the motor is off, air tank pressure drops as you
continue to use your accessory. When the tank pressure drops to a certain low
level the motor will restart automatically. The low pressure at which the motor
automatically restarts is called "cut-in" pressure.
Cut-Out Pressure: When an air compressor is turned on and begins to run,
air pressure in the air tank begins to build. It builds to a certain high pressure
before the motor automatically shuts off - protecting your air tank from
pressure higher than its capacity. The high pressure at which the motor shuts
off is called "cut-out" pressure.
Branch Circuit: Circuit carrying electricity from electrical panel to outlet.
DUTY CYCLE
This air compressor pump is capable of running continuously. However, to
prolong the life of your air compressor, it is recommended that a 50%-75%
average duty cycle be maintained; that is, the air compressor pump should not
run more than 30-45 minutes in any given hour.
SPECIFICATIONS
Model No. 66-651-1
Running Horsepower 2.0
Bore 2-3/8"
Stroke 1.35"
Voltage-Single Phase 120V/60Hz/1Ph
Minimum Branch Circuit Requirement 15 amps
*Fuse Type Time Delay
Air Tank Capacity 25
Approximate Cut-in Pressure 110
Approximate Cut-out Pressure 135
SCFM @ 40 psig 7.5
SCFM @ 90 psig 5.0
PSIG
PSIG
ACCESSORIES
Accessories for this unit are available at the store the unit was purchased.
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8- ENG
ASSEMBLY
Tools Required for Assembly
1 - 9/16" socket or open end wrench
1 - 1/2" socket or open end wrench
Unpacking
1. Remove all packaging leaving the air compressor on the pallet.
2. Remove and discard the (4) screws
holding the air compressor to the
pallet.
It may be necessary to
one side of the air compressor when
removing the pallet because the air
compressor will have a tendency to tip.
3. Carefully remove the air compressor
from the pallet.
Assemble Wheels
will have a tendency to tip.
1. Attach wheels with shoulder bolts and nuts as shown.
2. Tighten securely.
installed.
or steps. The unit must be lifted, or pushed up a ramp.
Assemble Rubber Feet
1. Attach rubber feet with the screws provided as shown in previous figure.
2. Tighten securely.
brace or support
Screws
It will be necessary to brace or support one side of the
outfit when installing the wheels because the compressor
NOTE: The outfit will sit level if the wheels are properly
The wheels and handle do not provide adequate clearance,
stability or support for pulling the unit up and down stairs
Nut
Wheel
9- ENG
Rubber Feet
Screw
Shoulder Bolt
A08184
INSTALLATION
HOW TO SET UP YOUR UNIT
Location of the Air Compressor
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 the air compressor.
GROUNDING INSTRUCTIONS
RISK OF ELECTRICAL 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 portable air compressor is equipped with a cord having a grounding wire
with an appropriate grounding plug (see following illustrations). The plug must
be used with an outlet that has been installed and grounded in accordance with
all local codes and ordinances.
1. The cord set and plug with this unit contains a grounding pin. This plug
MUST be used with a grounded outlet.
IMPORTANT: The outlet being used must be installed and grounded in
accordance with all local codes and ordinances.
2. Make sure the outlet being used
has the same configuration as the
grounded plug. DO NOT USE AN
ADAPTER. See illustration.
3. Inspect the plug and cord before each
use. Do not use if there are signs of
damage.
4. If these grounding instructions are
not completely understood, or if in doubt as to whether the compressor is
properly grounded, have the installation checked by a qualified electrician.
IMPROPER GROUNDING CAN RESULT IN ELECTRICAL
SHOCK. Do not modify the plug provided. If it does not fit the available
outlet, a correct outlet should be installed by a qualified electrician.
Repairs to the cord set or plug MUST be made by a qualified electrician.
Plug
Grounded
Outlets
Grounding Pin
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10- ENG
Extension Cords
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:
• a 3-wire extension cord that has a 3-blade grounding plug, and a 3-slot
receptacle that will accept the plug on the product
• in good condition
• no longer than 50 feet
• 12 gauge (AWG) or larger. (Wire size increases as gauge number
decreases. 10 AWG and 8 AWG may also be used. DO NOT USE 14 OR
16 AWG.)
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. Time delay fuses should be marked "D" in
Canada and "T" in the US.
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.
11- ENG
A08184
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/AUTO" to provide
automatic power to the pressure
Pressure
Switch
Tank Pressure Gauge
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.
Safety Valve: If the pressure
On/Auto/Off
Switch
Safety Valve
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 (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. Turn
the knob clockwise to increase pressure and counterclockwise to decrease
pressure.
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.
Cooling System (not shown): This compressor
Drain
Valve
contains an advanced design cooling system. At the
heart of this cooling system is an engineered fan. It is perfectly normal for this
fan to blow air through the vent holes in large amounts. You know that the
cooling system is working when air is being expelled.
Air Compressor Pump (not shown): Compresses 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.
Outlet
Pressure
Gauge
Regulator
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12- ENG
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
Check Valve
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
Pressure
Release
Valve
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 continuous leaking after unit reaches "cut-out"
pressure.
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to "OFF".
Before Starting
Break-in instructions
Serious damage may result if the following break-in
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.
Voltage and Circuit Protection paragraph in the Installation section of this
manual.)
3. Open the drain valve fully (counter-clockwise) 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.
instructions are not closely followed.
(Refer to
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A08184
Before Each Start-Up:
1. Place On/Auto/Off lever to "OFF".
2. Turn the regulator knob counterclockwise to set the outlet pressure to zero.
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.
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 "ON/AUTO" and allow tank pressure to build.
Motor will stop when tank pressure reaches "cut-out" pressure.
2. Turn regulator knob clockwise to increase pressure and stop when desired
pressure is reached. 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
Check Safety Valve
Drain Tank
Air Filter
Air compressor pump intake
and exhaust valves
1- more frequent in dusty or humid conditions
Daily
or after
each
use
Frequently
Yearly
●
●
1
●
●
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.
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14- ENG
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 require a greater frequency of all maintenance checks.
NOTE: See "Operation" section for the location of controls.
To Check Safety Valve
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. Turn the regulator knob counterclockwise 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.
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.
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.
Air Filter Inspection and Replacement
Hot surfaces. Risk of burn. Compressor heads are
exposed when filter cover is removed. Allow compressor
to cool prior to servicing.
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.
15- ENG
A08184
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.
Air Compressor Pump Intake and Exhaust Valves
Once a year have a Trained Service Technician check the air compressor pump
intake and exhaust valves.
SERVICE AND ADJUSTMENTS
Unit cycles automatically when power is on. When doing
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 A TRAINED SERVICE TECHNICIAN.
• Unplug or disconnect electrica supply to the air compressor.
• Bleed tank of pressure.
• Allow the air compressor to cool.
To Replace or Clean Check Valve
1. Release all air pressure from air tank. See "To Drain Tank" in the
Maintenance section.
2. Unplug outfit.
3. Using an adjustable wrench, loosen outlet
tube nut at air tank and pump. Carefully
move outlet tube away from check valve.
4. Using an adjustable wrench, loosen
pressure relief tube nut at air tank and
pressure switch. Carefully move pressure
relief tube away from check valve.
5. Unscrew the check valve (turn
counterclockwise) using a 7/8" open
end wrench.
reassembly.
6. Using a screwdriver, carefully push
the valve disc up and down.
The valve disc should move freely
up and down on a spring which
holds the valve disc in the closed
position; if not the check valve
needs to be cleaned or replaced.
7. Clean or replace the check valve.
A solvent, such as paint or varnish
remover can be used to clean the
check valve.
A08184
Maintenance, you may be exposed to voltage sources,
Before servicing:
Outlet Tube
Pressure
Relief
Tube
Nut
Nut
Check
Valve
Note the orientation for
NOTE:
Screwdriver
In open
position
nothing is
visible.
In closed position
disc is visible.
16- ENG
8. Apply sealant to the check valve threads. Reinstall the check valve (turn
clockwise).
9. Replace the pressure release tube. Tighten nuts.
10. Replace the outlet tube and tighten nuts.
11. Perform the Break-in Procedure. See "Break-in Procedure" in the
Operation section.
To Replace Regulator
1. Release all air pressure from air tank. See "To Drain Tank" in the
Maintenance section.
2. Unplug compressor.
3. Remove the outlet pressure gauge and quick connect (if equipped) from
the regulator.
4. Remove the regulator.
5. Apply pipe sealant tape to the nipple.
Outlet
Pressure
Regulator
Gauge
Quick
Connect
6. Assemble the regulator and orient as shown.
NOTE: Arrow indicates flow of air. Make sure it is pointing in the direction of air
flow.
Nipple
Regulator
Arrow
Regulator
7. Reapply pipe sealant to outlet pressure gauge and quick connect.
8. Reassemble outlet pressure gauge and quick connect. Orient outlet
pressure gauge to read correctly. Tighten quick connect with wrench.
17- ENG
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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 maintenance 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.
6. Drain water from air tank by opening drain valve on bottom of 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.
7. After the water has been drained, close the drain or drain valve.
NOTE: If drain valve is plugged, release all air pressure. The 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. (If so equipped)
Store the air compressor in a clean and dry location.
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18- ENG
TROUBLESHOOTING
Performing repairs may expose voltage sources, moving
compressed air sources. Personal injury may occur. Prior to attempting
any repairs, unplug the air compressor and bleed off all air tank air
pressure.
PROBLEM
Excessive tank
pressure - safety
valve pops off.
parts or compressed air sources, moving parts or
CAUSE
Pressure switch does
not shut off motor when
compressor reaches "cutout" pressure.
CORRECTION
Move On/Auto/Off lever
to the "OFF" position, if
the outfit does not shut off
contact a Trained Service
Technician.
Air leaks at
fittings.
Air leaks at or
inside check
valve
Air leaks at
pressure switch
release valve.
Air leaks in air
tank or at air
tank welds.
Air leaks
between head
and valve plate.
Pressure switch "cut-out"
too high.
Tube fittings are not tight
enough.
Contact a Trained Service
Technician.
Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution. Do Not
Overtighten.
Check valve seat damaged. A defective check valve
results in a constant air leak
at the pressure release valve
when there is pressure in the
tank and the compressor
is shut off. Replace check
valve. Refer to the "To
Replace or Clean Check
Valve" in the "Service and
Adjustment" section.
Defective pressure switch
release valve.
Contact a Trained Service
Technician.
Defective air tank. Air tank must be replaced.
Do not repair the leak.
Do not
drill into,
weld or otherwise modify
air tank or it will weaken.
The tank can rupture or
explode.
Leaking seal.
Contact a Trained Service
Technician.
19- ENG
A08184
PROBLEM
Pressure reading
on the regulated
pressure gauge
drops when an
accessory is
used.
Knocking Noise.
Compressor is
not supplying
enough air
to operate
accessories.
CAUSE
It is normal for "some"
pressure drop to occur.
CORRECTION
If there is an excessive
amount of pressure drop
when the accessory is used,
adjust the regulator following
the instructions in the
"Description of Operation"
paragraph in the "Operation
Section.
NOTE: Adjust the regulated
pressure under flow
conditions (while accessory is
being used).
Possible defect in safety
valve.
Operate safety valve
manually by pulling on ring.
If valve still leaks, it should
be replaced.
Defective check valve. Remove and clean, or
replace.
Prolonged excessive use of
air.
Compressor is not large
enough for air requirement.
Decrease amount of air
usage.
Check the accessory
air requirement. If it is
higher than the SCFM or
pressure supplied by your
air compressor, you need a
larger compressor.
Regulator knob
has continuous
air leak.
A08184
Hole in hose.
Check valve restricted.
Air leaks.
Restricted air intake filter
Damaged regulator
20- ENG
Check and replace if
required.
Remove and clean, or
replace.
Tighten fittings.
Clean or replace air intake
filter. Do not operate the
air compressor with the
filter removed. Refer to the
"Air Filter" paragraph in the
"Maintenance " section.
Replace
PROBLEM
Regulator will
not shut off air
outlet.
Motor will not
run.
CAUSE
Damaged regulator
Motor overload protection
switch has tripped
CORRECTION
Replace
Let motor cool off and
overload switch will
automatically reset.
Tank pressure exceeds
pressure switch "cut-in"
pressure.
Motor will start automatically
when tank pressure drops
below "cut-in" pressure of
pressure switch.
Extension cord is wrong
length or gauge.
Check valve stuck open.
Check for proper gauge wire
and cord length.
Remove and clean, or
replace.
Loose electrical connections. Check wiring connection
inside pressure switch and
terminal box area.
Possible defective motor or
starting capacitor.
Paint spray on internal motor
parts.
Have checked by a Trained
Service Technician.
Have checked by a Trained
Service Technician. Do not
operate the compressor in
the paint spray area. See
flammable vapor warning.
Pressure release valve on
pressure switch has not
unloaded head pressure.
Bleed the line by pushing the
lever on the pressure switch
to the "off" position; if the
valve does not open, replace
switch.
Fuse blown, circuit breaker
tripped.
1. Check fuse box for blown
fuse and replace as
necessary. Reset circuit
breaker. Do not use a fuse
or circuit breaker with
higher rating than that
specified for your particular
branch circuit.
2. Check for proper fuse. You
should use a time delay
fuse.
3. Check for low voltage
conditions and/or proper
extension cord.
4. Disconnect the other
electrical appliances from
circuit or operate the
compressor on its own
branch circuit.
21- ENG
A08184
Torque
5-7 ft.-lbs.
5
24
26
27
28
25
9
10
21
15
17
6
10
11
14
18
4
3
To
rque
9-12 ft.-lbs.
2
1
Torque
15-25 ft.-lbs.
32
31
To
rque
100-120 in.-lbs.
8
29
30
19
23
22
5
20
AIR COMPRESSOR DIAGRAM
A08184
22- ENG
PARTS LIST
Key Part
No. Number Description
1 ACG-408 Fastener Assembly (2)
2 AC-0376 Mini Shroud
3 91895680 Screw 1/4-20 x 3/4 (2)
4 ACG-18 Cup, Saddle Mount (2)
5 CAC-60 Shoulder Bolt (2)
6 AC-0774 Isolator (3)
8 AC-0605-1 Outlet Tube
9 SSP-7811 Nut Sleeve Assembly 1/4"
10 Z-D23004 Gauge (2)
11 SSP-6021 Reducer Bushing 1/8-1/4NPT
14 Z-D26611 Pressure Switch
15 D24888 Nipple 1/4-18 NPT x 2-1/2
17 TIA-4150 Safety Valve
18 D26615 Cord Assembly
19 D23138 Wheel - 9" (2)
20 AC-0609 Handle
21 SS-1286 Nipple 1/4-18 NPT
22 D21172 Screw (4)
23 SSF-8080-ZN Nut Hex 3/8-16
24 CAC-4296-1 Regulator
25 D26899 Adaptor
26 AC-0630 Pressure Relief Tube
27 AC-0631 Check Valve
28 SSP-7813 Nut Sleeve Assembly 3/8"
29 SST-107 Rubber Bumper (2)
30 SSF-630 Bumper Screw (2)
31 SSP-7821-1 Tube Nut
32 SSG-3105 O-Ring
33 Z-D26196 Tank
UNC - 2B (2)
Not Shown
D23000 Drain Valve
23- ENG
A08184
AIR COMPRESSOR PUMP DIAGRAM
Torque 51-63 in.-lbs.
To
rque 100-120 in.-lbs.
Torque 100-120 in.-lbs.
To
rque 7-10 ft.-lbs.
To
rque 42-48 in.-lbs.
83
84
85
90
89
87
81
80
91
78
72
70
74
73
76
79
92
93
77
88
A08184
24- ENG
PARTS LIST
KEY PART
NO. NO. DESCRIPTION
70 SSF-586 Screw 1/4-20 x 3/4
72 AC-0108 Fan
73 SSF-615 Screw 1/4-20 UNC-2A THD
74 Z-AC-0107 Eccentric Bearing Assembly
76 Z-D27268 Motor
77 D28993 Shim
✓ * 78 ----- Cylinder Sleeve
✓ 79 ----- Connecting Rod Assembly
✓ * 80 SSG-8156 O-Ring
81 Z-AC-0032 Valve Plate Assembly
✓ * 83 ACG-45 O-Ring
84 AC-0037 Head
85 SSF-927 Screw 1/4-20 x 1-1/8 (4)
▲ 87 ----- Muffler Intake
▲ 88 ----- Screen Filter
▲ 89 DAC-143 Filter Intake
▲ 90 ----- Fastener Intake Filter (2)
✓ * 91 ----- Screw
✓ 92 ----- Compression Ring Cap
✓ * 93 ----- Preformed Compression Ring
▲ KK-4981 Intake Muffler Kit
✓ KK-4835 Piston/Cylinder Kit
* K-0650 Cylinder Sleeve/Compression Ring Kit
25- ENG
A08184
LIMITED WARRANTY
DELTA MACHINERY warrants to the original purchaser that all products covered under this warranty are free
from defects in material and workmanship. Products covered under this warranty include air compressors, air
tools, service parts, pressure washers, and generators, which have the following warranty periods:
3 YEARS - Limited warranty on 2-stage oil-free air compressor pumps that operate at 1725 RPM.
2 YEARS - Limited warranty on oil-lubricated air compressor pumps.
1 YEAR - Limited warranty on all other air compressor components.
2 YEARS - Limited warranty on electric generator alternators.
1 YEAR - Limited warranty on other generator components.
2 YEARS - Limited warranty on pneumatic air tools as described in Delta general catalog.
1 YEAR - Limited warranty on pressure washers used in consumer applications (i.e. personal residential
household usage only).
90 DAY - Pressure washers used for commercial applications (income producing) and service parts.
1 YEAR - Limited warranty on all accessories.
Delta will repair or replace, at Delta's option, products or components which have failed within the warranty
period. Service will be scheduled according to the normal work flow and business hours at the service
center location, and the availability of replacement parts.
this limited warranty shall be final.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to
state.
RESPONSIBILITY OF ORIGINAL PURCHASER (initial User):
• To process a warranty claim on this product, DO NOT return it to the retailer. The product must be
evaluated by an
Warranty Service Center call 1-866-422-4286, 24 hours a day, 7 days a week.
• Retain original cash register sales receipt as proof of purchase for warranty work.
• Use reasonable care in the operation and maintenance of the product as described in the Owners
Manual(s).
• Deliver or ship the product to the nearest
be paid by the purchaser.
• Air compressors with 60 and 80 gallon tanks will be inspected at the site of installation. Contact
the nearest Authorized Warranty Service Center that provides on-site service calls, for service call
arrangements.
• If the purchaser does not receive satisfactory results from the
purchaser should contact .
THIS WARRANTY DOES NOT COVER:
• Merchandise sold as reconditioned, used as rental equipment, and floor or display models.
• Merchandise that has become damaged or inoperative because of ordinary wear, misuse*, cold, heat,
rain, excessive humidity, freeze damage, use of improper chemicals, negligence, accident, failure to
operate the product in accordance with the instructions provided in the Owners Manual(s) supplied with
the product, improper maintenance, the use of accessories or attachments not recommended by , or
unauthorized repair or alterations.
* An air compressor that pumps air more than 50% during a one hour period is considered misuse
because the air compressor is undersized for the required air demand.
• Repair and transportation costs of merchandise determined not to be defective.
• Costs associated with assembly, required oil, adjustments or other installation and start-up costs.
• Expendable parts or accessories supplied with the product which are expected to become inoperative or
unuseable after a reasonable period of use, including but not limited to sanding disks or pads, saw and
shear blades, grinding stones, springs, chisels, nozzles, o-rings, air jets, washers and similar accessories.
• Merchandise sold by which has been manufactured by and identified as the product of another company,
such as gasoline engines. The product manufacturer's warranty, if any, will apply.
• ANY INCIDENTAL, INDIRECT OR CONSEQUENTIAL LOSS, DAMAGE, OR EXPENSE THAT MAY
RESULT FROM ANY DEFECT, FAILURE OR MALFUNCTION OF THE PRODUCT IS NOT COVERED
BY THIS WARRANTY. Some states do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitation or exclusion may not apply to you.
• IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, ARE LIMITED TO ONE YEAR FROM THE DATE OF ORIGINAL PURCHASE.
Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may
not apply to you.
Delta Authorized Warranty Service Center. For the location of the nearest Authorized
Authorized Warranty Service Center. Freight costs, if any, must
All decisions of Delta Corporation with regard to
Authorized Warranty Service Center, the
A08184A08184
Jackson, TN USA
1-866-422-4286
26- ENG
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