Page 1
IN
STRUCTIO
N M
ANU
AL
PART NO. D26269 Rev. 0
Copyright © 2002 Delta Machinery
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.
Oillube Air Compressor
with Single-Stage Pump
(66-750)
ESPAÑOL: PÁGINA 31
FRANÇAIS: PAGE 61
Page 2
2-ENGD26269
SAFETY GUIDELINES - DEFINITIONS
Indicates an
imminently hazardous
situation which, if not avoided, will
result in death or serious injury.
Indicates a
potentially
hazardous situation which, if not
avoided, could
result in death or
serious injury.
Indicates a
potentially hazardous
situation which, if not avoided, may
result in minor or moderate injury.
Used without the
safety alert symbol
indicates a potentially hazardous
situation which, if not avoided, may
result in pr
operty damage.
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.
IMPORTANT SAFETY INSTRUCTIONS
Some dust created by power sanding, sawing, grinding,
drilling, and other construction activities contains chemicals
known (to the State of California) to cause cancer, birth defects or other
reproductive harm. Some example of these chemicals are:
l
lead from lead-based paints
l
crystalline silica from bricks and cement and other masonry products
l
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.
Page 3
3-ENG D26269
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
How To Prevent It
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.
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. Do not operate unit
indoors or in any confined area.
Always remain in attendance with the
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.
Page 4
4-ENGD26269
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.
How To Prevent It
What Could Happen
WARNING: Risk from Flying Objects
HOW TO PREVENT IT
WHAT CAN HAPPEN
The compressed air stream can cause
soft tissue damage to exposed skin and
can propel dirt, chips, loose particles,
and small objects at high speed,
resulting in property damage or personal
injury.
Always wear ANSI Z87.1 approved safety
glasses with side shields when using the
compressor.
Never point any nozzle or sprayer
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.
HAZARD
HAZARD
Drain tank daily or after each use. If
tank develops a leak, replace it
immediately with a new tank or replace
the entire compressor.
1. Failure to properly drain
condensed water from tank,
causing rust and thinning of the
steel tank.
2. Modifications or attempted repairs
to the tank.
3. Unauthorized modifications to the
unloader valve, safety valve, or any
other components which control
tank pressure.
Never drill into, weld, or make any
modifications to the tank or its
attachments.
4. Excessive vibration can weaken
the air tank and cause rupture or
explosion
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, you
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.
A
TTACHMENTS & 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.
Page 5
5-ENG D26269
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: Risk to Breathing
WARNING: Risk of Electrical Shock
HOW TO PREVENT IT
WHAT CAN HAPPEN
HAZARD
HAZARD
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.
Never operate the compressor outdoors
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.
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.
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.
Page 6
6-ENGD26269
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: RISK OF BURNS
Touching exposed metal such as the
compressor head or outlet tubes, can
result in serious burns.
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
WHAT CAN HAPPEN
WARNING: RISK FROM MOVING PARTS
Never operate the compressor with
guards or covers which are damaged or
removed.
Moving parts such as the pulley, flywheel,
and belt can cause serious injury if they
com into contact with you or your
clothing.
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: RISK OF FALLING
A portable compressor can fall from a
table, workbench, or roof causing
damage to the compressor and could
result in serious injury or death to the
operator.
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.
HAZARD
HAZARD
HAZARD
Any repairs required on this product
should be performed by authorized
service center personnel.
Attempting to operate compressor with
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.
Page 7
7-ENG D26269
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.
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: RISK OF UNSAFE OPERATION
Unsafe operation of your air compressor
could lead to serious injury or death to
you or others.
HAZARD
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: RISK OF SERIOUS INJURY OR PROPERTY
DAMAGE WHEN TRANSPORTING COMPRESSOR
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.
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.
(Fire, Inhalation, Damage to Vehicle Surfaces)
HAZARD
Page 8
8-ENGD26269
Model No. 66-750
Horsepower Peak 6.5
Bore 2.875"
Stroke 2"
Voltage-Single Phase 240
Minimum Branch Circuit Requirement 15 amps
*Fuse Type "Time Delay"
Air Tank Capacity - Gallons 60
Approximate Cut-in Pressure 110
Approximate Cut-out Pressure 135
SCFM @ 40 PSIG 11.9
SCFM @ 90 PSIG 9.4
SPECIFICATIONS
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.
To Lock Out Power: Place a lock on the line power switch so no one else can
turn on the power.
DUTY CYCLE
Air compressors should be operated on not more than a 50% duty cycle. This
means an air compressor that pumps air more than 50% of one hour is
considered misuse, because the air compressor is undersized for the required
air demand. Maximum compressor pumping time per hour is 30 minutes.
* A circuit breaker is preferred. Use only a fuse or circuit breaker that is the same
rating as the branch circuit on which the air compressor is operated. 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.
Accessories for this unit are available at the store the unit was purchased.
ACCESSORIES
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9-ENG D26269
ASSEMBLY
Tools Required for Assembly
1 - 9/16" socket or open end wrench
1 - electric drill
Unpacking
1. Remove all packaging.
It may be necessary to brace or support one side of the
outfit when removing the pallet because the air
compressor will have a tendency to tip.
2. Remove and discard the (4) screws and washers holding the compressor
to the pallet.
3. With the help of another person carefully remove air compressor from
pallet and place on a level surface.
To Add Oil To Pump
Compressors are shipped without oil. A small amount of
oil may be present in the pump upon receipt of the air
compressor. This is due to plant testing and does not mean the pump
contains oil. Do not attempt to operate this air compressor without first
adding oil to the crankcase. Serious damage can result from even limited
operation unless filled with oil and broken in correctly. Make sure to
closely follow initial start-up procedures.
Multi-Viscosity motor oils, like 10W 30, should not be
used in an air compressor. They leave carbon deposits on
critical components, thus reducing performance and compressor life. Use
air compressor oil only.
NOTE: Oil is included with some units. If oil is not included, use an oil
specifically formulated for use in an air compressor, such as Porter-Cable PAS1
air compressor oil. Oil may be found at the store where the air compressor was
purchased.
1. Place unit on a level surface.
Drain tank to release air
pressure before removing
the oil fill cap or oil drain plug.
2. Remove oil fill plug (A) and slowly add
compressor oil until it is even with the top
of the oil fill hole. NOTE: Do not allow oil
to be lower than 3/8" (6 threads) from the
top at any time. When filling the
crankcase, the oil flows very slowly into
the pump. If the oil is added too quickly, it
will overflow and appear to be full. NOTE:
Crankcase oil capacity is approximately 16
fluid ounces.
3. Replace oil fill plug.
A
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10-ENGD26269
Anchoring of the Air Compressor
Excessive Vibration can weaken the air tank and cause an
explosion. The compressor must be properly mounted.
The air compressor MUST be bolted to a solid, level surface.
Hardware needed:
4 - Concrete anchors (not supplied)
4 - 3/8" Lag screw to fit concrete anchors (not supplied)
4 - 5/8" Washer (found in parts bag)
- shims (if needed)
1. Place the air compressor on on a solid, level surface.
2. Mark the surface using the holes in the air compressor feet as a template.
3. Drill holes in the surface for the concrete anchors. Install concrete anchors.
4. Line-up holes in surface with holes
in air compressor feet.
5. Place the (4) washers (supplied)
between the floor and air
compressor feet. If needed, solid
shims may be placed between the
washers and floor to evenly
distribute weight on all four feet.
See next figure.
6. Place the (4) 3/8" lag screws
through the air compressor feet,
washers, shims, and into the
anchors.
7. Torque 3/8" lag screws to 7-10 ft.-lbs.
Location of the Air Compressor
• Locate the air compressor in a clean, dry, and well ventilated area.
• Locate the air compressor at least 12" away from the wall or other
obstructions that will interfere with the flow of air.
• Locate the air compressor as close to the main power supply as possible
to avoid using long lengths of electrical wiring. NOTE: Long lengths of
electrical wiring could cause power loss to the motor.
• The air filter must be kept clear of obstructions which could reduce air flow
to the air compressor.
HOW TO SET UP YOUR UNIT
3/8" Lag
Screw
(not
supplied)
5/8" Washer
(supplied)
Shim Under
Washer
(not supplied)
Concrete Anchor
(not supplied)
Surface Line
INSTALLATION
Page 11
11-ENG D26269
Air Distribution System
Plastic or PVC pipe is not designed for use with
compressed air. Regardless of its indicated pressure
rating, plastic pipe can burst from air pressure. Use only metal pipe for air
distribution lines.
The next figure represents a typical air distribution system. The following are
tips to remember when setting up the air compressor’s air distribution system.
Wiring Instructions
RISK OF ELECTRICAL SHOCK. Improper electrical
grounding can result in electrical shock. The wiring
should be done by a qualified electrician to comply with national and local
electrical codes.
A qualified electrician needs to knows the following before wiring:
1. The amperage rating of the electrical box should be adequate. Refer to the
product specifications, found in the front of this manual, for this
information.
2. The supply line should have the same electrical characteristics (voltage,
cycle, phase) as the motor. Refer to the motor nameplate, on side of
motor, for this information.
NOTE: The wiring must be the same as the motor nameplate voltage plus or
minus 10%. Refer to local codes for recommended wire sizes, correct wire
size, and maximum wire run; undersize wire causes high amp draw and
overheating to the motor.
Electrical wiring must be located away from hot surfaces
such as manifold assembly, compressor outlet tubes,
heads, or cylinders.
GROUNDING INSTRUCTIONS
This product should be connected to a metallic, permanent wiring system, of
an equipment-grounding terminal or lead on the product.
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. 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.
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12-ENGD26269
● Use pipe that is the same size as the air tank outlet. Piping that is too
small will restrict the flow of air.
● If piping is over 100 feet long, use the next larger size.
● Bury underground lines below the frost line and avoid pockets where
condensation can gather and freeze. Apply pressure before underground
lines are covered to make sure all pipe joints are free of leaks.
● A flexible coupling is recommended to be installed between the air
discharge outlet and main air distribution line to allow for vibration.
● A separate regulator is recommended to control the air pressure. Air
pressure from the tank is usually to high for individual air driven tools.
AIR FLOW
MAIN DISTRIBUTION AIR LINES
Slope pipe down in direction of air flow.
Water condensate flows along
bottom of pipe to drain legs,
preventing it from entering feeder
lines.
LUBRICATOR
MOISTURE
SEPARATOR
AND TRAP
DIRT
LEG
FEEDER LINES SLOPE
WITH AIR FLOW
REGULATOR
LUBRICATOR
REGULATOR
FILTER
AIR USAGE
LINES
DRAIN
TRAP
AIR FLOW
FLEXIBLE
COUPLING
DIRT
LEG
AIR DISCHARGE
VALVE
DRAIN
LEGS
DRAIN
TRAPS
AIR
COMPRESSOR
TYPICAL COMPRESSED
AIR DISTRIBUTION SYSTEM
DRAIN COCK
VALVE
Page 13
13-ENG D26269
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.
Safety Valve: If the pressure 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).
Tank Pressure Gauge: The tank pressure gauge indicates the reserve air
pressure in the tank.
Globe Valve: Opens and closes air discharge valve. Turn knob counterclockwise to open and clockwise to close.
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
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.
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.
Globe Valve
Tank
Pressure
Gauge
Safety Valve
On/Auto/Off
Switch
Pressure
Switch
Drain
Valve
Page 14
14-ENGD26269
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 continuous
leaking after unit reaches "cut-out"
pressure.
Air Intake Filter (not shown) This filter is
designed to clean air coming into the pump. This filter must always be clean
and ventilation openings free from obstructions. See "Maintenance".
Motor Overload Protector: This motor has a manual 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. To
restart:
1. Place the On/Auto/Off lever in the Off
postion.
2. Allow the motor to cool.
3. Depress the red reset button on the motor.
4. Place the On/Auto/Off lever in the On/Auto
postion to restart the motor.
Pressure
Release
Valve
Check Valve
Before Starting
Break-in Procedure
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.
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to "OFF".
Page 15
15-ENG D26269
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. When the tank pressure reaches "cut-out" pressure open the globe valve.
IMPORTANT: When using regulator and other accessories refer to the
manufacturers instructions.
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 compressor near the spray area.
Before Each Start-Up:
1. Place On/Auto/Off lever to "OFF".
2. Close the globe valve.
3. Attach hose and accessories. NOTE: A regulator MUST be installed when
using accessories rated at less than 110 PSI.
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.
2.
Recheck all wiring. Make sure wires are secure at all terminals connections.
Make sure all contacts move freely and are not obstructed.
3. Open the globe valve fully to permit air to escape and prevent air pressure
build up in the air tank during the break-in period.
4. Move the On/Auto/Off lever to "ON/AUTO" position. The compressor will
start.
5. Run the compressor for 20 minutes. Make sure the globe valve is open
and there is minimal air pressure build-up in tank.
6. Check all air line fittings and connections/piping for air leaks by applying a
soap solution. Correct if necessary. NOTE: Minor leaks can cause the air
compressor to overwork, resulting in premature breakdown or inadequate
performance.
7. Check for excessive vibration. Readjust or shim air compressor feet, if
necessary.
8. After 20 minutes, close the globe valve.The air receiver will fill to "cut-out"
pressure and the motor will stop.
Page 16
16-ENGD26269
MAINTENANCE
NOTE: See "Operation"section for the location of controls.
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.
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 Check Safety Valve
If the safety valve does not work properly, overpressurization 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.
Customer Responsibilities
Daily or
after
each
use
Before
each
use
●
●
●
●
Every
8
hours
Every
40
hours
Every
100
hours
Yearly
Every
160
hours
●
●
1
1- more frequent in dusty or humid conditions
Check Safety Valve
Drain Tank
Oil Leaks
Check Oil
Change Oil
Air Filter
●
●
●
●
Drive Belt -Condition
Motor Pulley/Flywheel alignment
Air compressor pump intake
and exhaust valves
Unusual Noise and/or Vibration
Inspect air lines and fittings
for leaks
●
Page 17
17-ENG D26269
Oil
Drain tank to release air pressure before removing the oil
fill cap or oil drain plug.
Checking
1. Remove the oil fill plug (A). The oil level should be even with the top of the
fill hole and no lower than 6 threads from the top of fill hole.
2. If needed, slowly add oil until it reaches the top of fill hole.
NOTE: Oil is included with some units. If oil is not included, use an oil
specifically formulated for use in an air compressor, such as Porter-Cable PAS1
air compressor oil. Oil may be found at the store where the air compressor was
purchased.
Changing
1. Remove the oil fill plug (A).
2. Remove the oil drain plug (B) and drain oil into a suitable
container.
3. Replace the oil drain plug (B) and tighten securely.
4. Slowly fill crankcase to the top of the fill hole. NOTE:
Crankcase oil capacity is approximately 16 fluid ouncs
(473.2 ml)
Overfilling with oil will cause premature compressor
failure. Do not overfill.
5. Replace oil fill plug (A) and tighten securely.
A
B
To Drain Tank
1. Set the On/Auto/Off lever to “OFF”.
2. Close the globe valve.
3. Remove the air tool or accessory.
4. Open the globe valve and allow the air to slowly bleed from the air tank
until tank pressure is approximately 20 psi.
5. Close the globe valve.
6. 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.
7. 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, and reinstalled.
Page 18
18-ENGD26269
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 using the compressor pump, check the air filter to make sure it is clean
and in place.
If it is dirty, replace it with a new filter.
1. Using a pair of needle nose pliers or a screwdriver pull or pry out the old
filter and carefully clean the filter area.
2. Push the new air filter in place. Refer to the "Repair Parts" for the correct
part number.
IMPORTANT: Do not operate the compressor with the air filter removed.
3. Place new air filter into filter cover. Refer to the "Repair Parts" for the
correct part number.
4. Replace air filter cover and lock into place.
Motor Pulley/Flywheel Alignment
NOTE: Once the motor pulley has been moved from its factory set location,
the grooves of the flywheel and pulley must be aligned to within 1/16" to
prevent excessive belt wear.
The air compressor flywheel and motor pulley must be in-line (in the same
plane) within 1/16" to assure belt retention within flywheel belt grooves. To
check alignment, perform the following steps:
1. Unplug air compressor from power source.
2. Remove belt guard
3. Place a straightedge
against the outside of the
flywheel and the motor
drive pulley.
4. Measure the distance
between the edge of the
belt and the straightedge
at points A1 and A2 in
figure. The difference between measurements should be no more than
1/16".
5. If the difference is greater or less than 1/16" loosen the set screw holding
the motor drive pulley to the shaft and adjust the pulley’s position on the
shaft until the A1 and A2 measurements are within 1/16" of each other.
6. Tighten the motor drive pulley set screw to 70-80 in.-lbs.
Page 19
19-ENG D26269
7. Visually inspect the motor drive pulley to verify that it is perpendicular to
the drive motor shaft. Points B1 and B2 of Figure should appear to be
equal. If they are not, loosen the set screw of the motor drive pulley and
equalize B1 and B2, using care not to disturb the belt alignment
performed in step 2.
8. Retighten the motor drive pulley set screw to 70-80 in.-lbs.
9. Reinstall belt guard.
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
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.
Before servicing:
●●
Unplug or disconnect electrical supply to the air compressor.
●●
Bleed tank of pressure.
●●
Allow the air compressor to cool.
Inspect Air Lines and Fittings for Leaks
1. Turn the air compressor on to inspect for air leaks.
2. Apply a soap solution to all air line fittings and connections/piping.
3. Correct any leaks found.
IMPORTANT: Even minor leaks can cause the air compressor to overwork,
resulting in premature breakdown or inadequate performance.
Page 20
To Replace or Clean Check Valve
1. Release all air pressure from air tank. See "To Drain Tank" in the
Maintenance section.
2. Unplug unit.
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. Note the orientation for
reassembly.
6. Using a screwdriver, carefully push the valve disc up and down. NOTE:
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.
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.
20-ENGD26269
In closed position
disc is visible.
In open position
nothing is visible.
Screwdriver
Outlet Tube
Nuts
Nuts
Pressure
Relief Tube
Check
Valve
Page 21
21-ENG D26269
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. Close the globe valve.
4. Remove the air tool or accessory.
5. Open the globe valve and allow the air to slowly bleed from the air tank
until tank pressure is approximately 20 psi.
6. 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.
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 air hose from damage (such as being stepped on or run over).
To Replace Belt
Serious injury or damage may occur if parts of the body
or loose items get caught in moving parts. Never
operate the unit with the belt guard removed. The belt guard should be
removed only when the compresor is unplugged.
1. Place the ON/AUTO-OFF lever in the OFF position.
2. Unplug compressor.
3. Remove the front of the belt guard by disengaging the snaps. Insert a flat
bladed screwdriver at each snap location and pry the beltguard apart.
4. Loosen the wing nut on hold
down plate and tilt motor to allow
for easy removal or installation of
the belt.
5. Remove belt.
6. Replace belt. NOTE: The belt
must be centered over the
grooves on the flywheel and
motor pulley.
7. Turn the wing nut on the hold
down plate until it makes contact
with the washer, plus one additional turn.
8. Replace the belt guard.
Wing Nut
Page 22
22-ENGD26269
TROUBLESHOOTING
Performing repairs may expose voltage sources, moving
parts or compressed air sources, moving parts or
compressd air sources. Personal injury may occur. Prior to attempting any
repairs, unplug the air compressor and bleed off all air tank air pressure.
PROBLEM
CAUSE
CORRECTION
Pressure switch does not
shut off motor when
compressor reaches "cutout" pressure.
Pressure switch "cut-out"
too high.
Move On/Auto/Off lever to
the "OFF" position, if the
outfit does
not shut off contact a
Trained Service Technician.
Contact a Trained Service
Technician.
Excessive tank
pressure safety valve
pops off.
Tube fittings are not tight
enough.
Tighten fittings where air can
be heard escaping. Check
fittings with soapy water
solution. DO NOT
OVERTIGHTEN.
Air leaks at
fittings.
Air leaks at
pressure switch
release valve.
(if equipped)
Defective pressure switch
release valve.
Contact a Trained Service
Technician.
Air leaks in air
tank or at air
tank welds.
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.
Air leaks
between head
and valve plate.
Leaking seal.
Contact a Trained Service
Technician.
Air leaks at or
inside check
valve
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 the "To Replace
or Clean Check Valve" in the
"Operation" section.
Page 23
23-ENG D26269
PROBLEM
CAUSE
CORRECTION
Compressor is
not supplying
enough air to
operate
accessories.
Prolonged excessive use of
air.
Compressor is not large
enough for air requirement.
Hole in hose.
Check valve restricted.
Air leaks.
Restricted air intake filter.
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.
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.
Pressure reading
on the regulated
pressure gauge
(if equipped)
drops when an
accessory is
used.
It is normal for "some"
pressure drop to occur.
If there is an excessive amount
of pressure drop when the
accessory is used, adjust the
regulator as instructed in the
Operation section.
NOTE: Adjust the regulated
pressure under flow conditions
(while accesory is being used).
Possible defect in safety
valve.
Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Air leak from
safety valve.
Clean or replace. See Air Filter
paragraph in the Maintenance
section.
Dirty air filter.
Restricted air
intake
Check belt tension, see
Adjusting Belt Tension in the
Maintenance section.
Loose belt.
Page 24
24-ENGD26269
PROBLEM
CAUSE
CORRECTION
Motor will not
run.
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.
Motor overload protection
switch has tripped.
The motor must be allowed to
cool down before restarting.
To restart, see Motor Overload
Protector paragraph in the
Operation section.
Tank pressure exceeds
pressure switch "cut-in"
pressure.
Motor will start automatically
when tank pressure drops
below "cut-in" pressure of
pressure switch.
Loose electrical
connections.
Check wiring connection
inside pressure switch and
terminal box area.
Have checked by a Trained
Service Technician.
Check valve stuck open.
Remove and clean, or replace.
Possible defective motor
or starting capacitor.
Have checked by a Trained
Service Technician. Do not
operate the compressor in the
paint spray area. See
flammable vapor warning.
Paint spray on internal
motor parts.
Bleed the line by pushing the
lever on the pressure switch to
the "OFF" position; if the valve
does not open, replace switch.
Pressure release valve on
pressure switch has not
unloaded head pressure.
Page 25
25-ENG D26269
PROBLEM
CAUSE
CORRECTION
Knocking Noise.
Possible defect in safety
valve.
Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Loose pulley. Tighten pulley set screw,
145-165 in.-lbs.
Compressor mounting
screws loose.
Tighten mounting screws,
20-25 ft.-lbs.
Loose flywheel. Tighten flywheel screw,
33-37 ft.-lbs.
Loose belt.
Check belt tension, see
Adjusting Belt Tension in the
Maintenance section.
Carbon build-up in pump. Have checked by a Trained
Service Technician.
Belt to tight. Check belt tension, see
Adjusting Belt Tension in the
Maintenance section.
Excessive belt
wear
Loose belt.
Tight belt.
Loose pulley.
Have checked by a Trained
Service Technician.
Pulley misalignment.
See Motor Pulley/Flywheel
Alignment paragraph in the
Maintenace section.
Squealing
sound.
Loose belt.
Compressor pump has no
oil.
See Oil-Checking paragraph in
the Maintenace section.
Check belt tension, see
Adjusting Belt Tension in the
Maintenance section.
Check belt tension, see
Adjusting Belt Tension in the
Maintenance section.
Check belt tension, see
Adjusting Belt Tension in the
Maintenance section.
Defective check valve. Remove and clean, or replace.
Page 26
26-ENGD26269
AIR COMPRESSOR DIAGRAM
1
2
31
5
7
6
8
3
For
customer
wiring
31
32
4
19
23
18
22
21
25
26
20
35
34
28
33
13
37
14
9
11
12
36
15
17
16
30
29
41
Torque 50-60 in.-lbs.
Torque
10-15 ft.-lbs.
Torque
70-80
in.-lbs.
Page 27
27-ENG D26269
PARTS LIST
KEY
NO.
PART NO. DESCRIPTION
1 Z-D26273 Tank
2 Z-D20659 Motor - O/L Ballerina
3 D21594 Motor Mount Pin
4 D23591 Hold Down Screw
5 CAC-1011 Spring Elastomer
6 SSN-1619-ZN Lock Washer
7 SSN-56-ZN Washer 1 x 11/32 x 1/16
8 SS-2038-ZN Nut Wing 5/16-18
9 Z-D22629 Pump Assembly
11 CAC-327 Bracket
12 SSF-8113-ZN Lock Nut 3/8-16 x 9/16
13 SSP-9401 Connector Body
14 SS-1215 Pipe Plug
15 CAC-323 Beltguard, Inside
16 CAC-322 Beltguard, Outside
17 SSF-986 Screw #10-16 x 7/16 (2 used)
18 AC-0217 Manifold
19 Z-D22260 Pressure Switch
20 SSP-7811 Nut Sleeve Assembly 1/4"
21 SS-2072-1 Nipple .375 NPT x 1.50
22 97503734 Safety Valve
23 GA-360 Gauge 300 PSI
25 SSV-812 Globe Valve 200 PSI
26 SSW-7367 Strain Relief Bushing
27 SUDL-402-2 Motor Cord Assembly (Not Shown)
28 D21583 Pressure Relief Tube
29 C-PU-2861 Motor Pulley
30 SS-391 Set Screw
31 SUDL-9-1 Screw (3 used)
32 SSN-613 Washer Belleville
33 D21581 Outlet Tube
34 CAC-4337-1 Check Valve
35 SS-8553 Connector Body
36 SSF-928 Screw 5/16-18 x 7/8 Hex (4 used)
37 SSP-7812 Nut Sleeve Assembly 1/2" (2 used)
41 C-BT-223 Belt
42 SS-2707 Drain Valve (Not Shown)
43 D20328 Air Compressor Oil (not shown)
Page 28
28-ENGD26269
PUMP DIAGRAM
Page 29
29-ENG D26269
PARTS LIST
KEY
NO. PART NO. DESCRIPTION
1 Z-AC-0205 Crankcase
* 2 265-16-1 Base Gasket
3 DAC-276 Base
4 SSF-925 Screw 1/4-20 x 7/8 (8 used) (Torque 9 to 12 ft.-lbs.)
* 5 265-6 Vent Filter (2 used)
6 265-18 Filter Plate
* 7 265-17 Felt Filter
8 SSF-955 Screw (5 used) (Torque 25 to 30 ft.-lbs.)
9 SSF-935 Screw (2 used)
10 SSF-6627 Shoulder Stud 3/8-16 (Torque 25 to 30 ft.-lbs.)
11 Z-CAC-4213 Assembly Head
* 12 Z-CAC-291-1 Gasket Head
13 Z-CAC-4212-1 Valve Plate Assembly
14 CAC-207 Piston Pin Plug (4 used)
15 265-19 Piston Pin (2 used)
16 265-410 Connecting Rod Assembly (2 used)
17 Z-D22270 Crankshaft
* 18 SSP-505 Plug
20 SSP-486 Pipe Plug 3/8 - 18 NPT (2 used)
21 SSN-1018 Washer Wavy Spring
* 22 AC-0169 Oil Seal
23 SST-104 Ball Bearing (2 used)
24 SSN-1014-ZN Washer .339/.344 ID 1-1/2
25 SSF-3039-ZN Screw 5/16-18 x 3/4 (Torque 15 to 20 ft.-lbs.)
26 265-2 Flywheel
27 CAC-4285 Piston Ring Assembly (2 used)
* 28 Z-CAC-54-2 Valve Plate Gasket
● 31 265-25 Intake Flapper Valve (2 used)
● 32 SSF-9821 Screw THD Forming #5-40 x 1/4 (8 used)
(Torque 13 to 17 in.-lbs.)
33 CAC-294 Restrictor Plate (2 used)
● 34 Z-265-196-1 Flapper Valve-Corner Bevels (2 used)
+ 35 Z-CAC-56-1 Compression Ring (4 used)
+ 36 Z-CAC-58 Oil Ring (4 used)
+ 37 Z-CAC-57 Oil Ring Expander (2 used)
38 SSF-927 Screw 1/4-20x1-1/8 (2 used) (Torque 9 to 13 ft.-lbs.)
Kits / Juegos
+ KK-4313 Ring Kit
* K-0159 Gasket Kit
● KK-4275 Valve Kit
69D109740 Pressure Release Valve and Nut
(not shown)
Page 30
30-ENGD26269
LIMITED WARRANTY
DELTA CORPORATION 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.
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.
All decisions of Delta Corporation with regard to
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 Delta Authorized Warranty Service Center. For the location of the nearest Authorized
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 Authorized Warranty Service Center. Freight costs, if any, must
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 Authorized Warranty Service Center, 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.
Jackson, TN USA
1-866-422-4286
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