Delta OILLUBE AIR COMPRESSOR D25235 029-2 User manual

INSTRUCTION MANUAL
PART NO. D25235 029-2
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 2-Stage Pump
(DLKC6580V2)
ESPAÑOL: PÁGINA 31
FRANÇAIS: PAGE 61

2-ENGD25235
SAFETY GUIDELINES - DEFINITIONS
Indicates an immi-
nently hazardous sit-
uation which, if not avoided, will
result in death or serious injury.
Indicates a potential-
ly hazardous situa-
tion which, if not avoided, could
result in death or serious injury.
Indicates a potential-
ly hazardous situa-
tion 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 property damage.
This manual contains information that is important for you to know and under-
stand. 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 repro-
ductive harm. Some example of these chemicals are:
Glead from lead-based paints
Gcrystalline silica from bricks and cement and other masonry products
Garsenic 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 venti-
lated 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.

3-ENG D25235
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 venti-
lation openings will cause serious over-
heating and could cause fire.
Unattended operation of this product
could result in personal injury or prop-
erty 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 ventila-
tion 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.

4-ENGD25235
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, result-
ing 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 immedi-
ately with a new tank or replace the entire
compressor.
1. Failure to properly drain con-
densed 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 modi-
fications 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 adjust-
ments 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 recommenda-
tion 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.
ATTACHMENTS & ACCESSORIES:
Exceeding the pressure rating of air
tools, spray guns, air operated acces-
sories, tires, and other inflatables can
cause them to explode or fly apart, and
could result in serious injury.

5-ENG D25235
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 per-
sonnel 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 protec-
tive 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 electri-
cal codes.
Make certain that the electrical circuit
to which the compressor is connected
provides proper electrical grounding,
correct voltage and adequate fuse pro-
tection.
The compressed air directly from your
compressor is not safe for breathing.
The air stream may contain carbon
monoxide, toxic vapors, or solid parti-
cles from the tank. Breathing these con-
taminants 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 breath-
ing, 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 applica-
ble local and federal codes prior to
human consumption.
Work in an area with good cross venti-
lation. 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.

6-ENGD25235 6-ENG
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 cloth-
ing.
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: RISK OF FALLING
A portable compressor can fall from a
table, workbench, or roof causing dam-
age to the compressor and could result
in serious injury or death to the opera-
tor.
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 mov-
ing parts and can result in serious injury.

7-ENG D25235D25235
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 compres-
sor at all times.
Do not operate the product when
fatigued or under the influence of alco-
hol or drugs. Stay alert at all times.
Never defeat the safety features of this
product.
Equip area of operation with a fire extin-
guisher.
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 DAM-
AGE 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 pro-
tective mat when transporting to protect
against damage to vehicle from leaks.
Remove COMPRESSOR from vehicle
immediately upon arrival at your destina-
tion.
(Fire, Inhalation, Damage to Vehicle Surfaces)
HAZARD

8-ENGD25235
Model No. DLKC6580V2
Horsepower Peak 6.5
Voltage-Single Phase 240V/60Hz/1Ph
Minimum Branch Circuit Requirement 30 amps
*Fuse Type Time Delay
Air Tank Capacity, Gallons 80 ASME, Vertical
Approximate Cut-in Pressure 145 PSIG
Approximate Cut-out Pressure 175 PSIG
SCFM @ 100 psig 16.9
SCFM @ 175 psig 16.0
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 deliv-
ery.
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
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
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 auto-
matically 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 elec-
tricity 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.
hour is considered misuse, because
the air compressor is undersized for
the required air demand. Maximum
compressor pumping time per hour is
30 minutes.
Accessories for this unit are available at the store the unit was purchased.
ACCESSORIES
* 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 compres-
sor 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.

9-ENG D252359-ENG D252359-ENG
2. Obtain the drain plug extension
(D), from the parts bag.
3. Apply thread sealant tape to the
threads of the drain plug exten-
sion (D).
4. Assemble the washer (C), drain
plug extension (D), and drain
plug (B) as shown in Figure.
5. Tighten securely.
6. Remove the oil fill plug (A.
7. Fill the crankcase with the rec-
ommended oil. NOTE: Use an air
compressor oil such as SAE-30
(API CG/CD heavy duty motor
oil). Under extreme winter condi-
tions use SAE-20 weight oil.
8. Replace the oil fill plug (A) and
tighten securely.
A
C
B
ASSEMBLY
Tools Required for Assembly
1 - 9/16" socket or open end wrench
1 - electric drill
Unpacking
1. Remove all packaging.
It may be neces-
sary 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 pres-
ent 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 fol-
low 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 compres-
sor oil only.
1. Remove the oil drain plug (B) and
washer (C).
CDB
9-ENG

10-ENGD25235
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 con-
crete anchors.
4. Line-up holes in surface with
holes in air compressor feet.
5. Place the (4) washers (not sup-
plied) 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.
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 sup-
plied)
4 - 3/8" Lag screw to fit con-
crete anchors (not supplied)
4 - 5/8" Washer (not supplied)
- Shims (if needed)
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 inter-
fere 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 com-
pressor.
HOW TO SET UP YOUR UNIT
3/8" Lag
Screw
(not supplied)
5/8" Washer
(not supplied)
Shim Under
Washer
(not supplied)
Concrete Anchor
(not supplied)
Surface Line
INSTALLATION

11-ENG D25235
GROUNDING INSTRUCTIONS
This product should be connected to
a metallic, permanent wiring system,
or an equipment-grounding terminal
or lead on the product and comply
with national and local electrical
codes.
Refer to the product specification
found in the front of this manual for
the voltage and minimum branch cir-
cuit requirements.
Air Distribution System
Plastic or PVC pipe
is not designed for
use with compressed air.
Regardless of its indicated pres-
sure 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 ELECTRI-
CAL SHOCK.
Improper electrical grounding can
result in electrical shock. The
wiring should be done by a quali-
fied 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 elec-
trical box should be adequate.
Refer to the product specifica-
tions, 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 name-
plate, 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.

12-ENGD25235
• 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. Fill lines with air pres-
sure before covering to make
sure pipe joints are free from
leaks.
• Install a flexible coupling
between the air discharge outlet
and main air distribution line to
allow for vibration.
NOTE: The shut-off valve is not sup-
plied with this unit. You must purch-
sase the shut-off valve separately.
• A separate regulator is recom-
mended to control the air pres-
sure. Air pressure from the air
tank is usually too high for indi-
vidual air driven tools.
DRAIN
TRAP DRAIN
TRAPS
DRAIN
LEGS
MOISTURE
SEPARATOR
AND TRAP
DIRT
LEG
DIRT
LEG
LUBRICATOR
REGULATOR
FILTER
GLOBE VALVE
LUBRICATOR
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.
REGULATOR
FLEXIBLE
COUPLING
DRAIN COCK
VALVE
TYPICAL COMPRESSED
AIR DISTRIBUTION SYSTEM
AIR FLOW AIR FLOW
FEEDER LINES SLOPE
WITH AIR FLOW
AIR USAGE
LINES
AIR
COMPRESSOR

13-ENG D25235D25235
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" pres-
sure. 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 (sold separately): Opens and closes air discharge valve. Turn
knob counter-clockwise to open and clockwise to close.
Regulator (sold separately, not shown): An air pressure regulator or a sepa-
rate air transformer which combines the functions of air regulation and/or mois-
ture and dirt removal is recommended for most applications.
Drain Valve: The drain valve is located at the
base of the air tank and is used to drain conden-
sation 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.
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

14-ENGD25235 14-ENG
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.
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".
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.
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. NOTE: The shut-off
valve is not supplied with this unit. You must purchase the shut-off
valve separately.
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.
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to "OFF".
Check Valve
Pressure
Release
Valve

15-ENG D25235
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 manu-
facturer-s instructions.
NOTE: Always operate the air compressor in well-ventilated areas free of gaso-
line 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 175 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.
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.

16-ENGD25235 16-ENG
MAINTENANCE
Customer Responsibilities
Before
each
use
●●
●2
Every
8
hours
Every
40
hours
Every
100
hours
Yearly
Every
160
hours
●
●1
1- more frequent in dusty or humid conditions
2- more frequent if humidity or operating conditions are extreme.
Check Safety Valve
Drain Tank
Check Oil
Change Oil
Air Filter
NOTE: See "Operation" section for the location of controls.
To ensure efficient operation and longer life of the air compressor outfit, a rou-
tine maintenance schedule should be prepared and followed. The following
routine maintenance schedule is geared to an outfit in a normal working envi-
ronment operating on a daily basis. If necessary, the schedule should be modi-
fied to suit the conditions under which your compressor is used. The modifica-
tions 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 per-
forming 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 prop-
erly, over-pressurization may occur,
causing air tank rupture or an
explosion.
Unusual Noise and/or
Vibration
Drive Belt-Condition
Motor Pulley/Flywheel alignment
Air compressor pump intake
and exhaust valves
Inspect air lines and fittings
for leaks
●2
●
●
●
●
●
Head Bolts - Check the torques of the head bolts after the first five hours of operation.
Every
500
hours
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.

17-ENG D25235D25235
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. Sowly add compressor oil until
the oil level is in the middle of the
sightglass (C). NOTE: When fill-
ing 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.
Overfilling with oil
will cause prema-
ture compressor failure. Do not
overfill.
5. Replace oil fill plug (A) and tight-
en securely.
Oil
NOTE: Use a air compressor oil such
as SAE-30 (API CG/CD heavy duty
motor oil). Under extreme winter con-
ditions use SAE-20 weight oil. NOTE:
Crankcase oil capacity is approxi-
mately 60 fluid ounces (1.8 L).
Checking
1. The oil level should be to the mid-
dle of the sight glass (C).
2. If needed remove oil fill plug (A)
and slowly add oil until it reaches
the middle of the sight glass.
To Drain Tank
NOTE: Operation of the air compres-
sor will cause condensation to build
up in the air tank. Always drain tank
on a washable surface or in a suit-
able container to prevent damaging
or staining surfaces.
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 con-
dense in the air
tank. If not drained, water will cor-
rode 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, then
reinstalled.
B
A
C
C

18-ENGD25235
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.
A dirty air filter will not allow the
compressor to operate at full capaci-
ty. Keep the air filter clean at all
times.
1. Remove the air filter cover.
2. Remove the air filter from filter
cover.
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.
Adjusting Belt Tension
1. Slide motor into original position,
line the motor up with the mark
made earlier on saddle.
2. Tighten two outside motor
mounting screws enough to hold
the motor in place for checking
pulley and flywheel alignment.
3. The belt should deflect 3/16" at
midway between the pulley and
the flywheel when a 5 pound
weight is applied at the midway
point.
4. When proper belt tension is
achieved, tighten all four motor
mounting screws. See Parts
manual for torque specifications.
NOTE: Once the engine pulley has
been moved from its factory set loca-
tion, the grooves of the flywheel and
pulley must be aligned to within 1/16"
to prevent excessive belt wear. Verify
the alignment by performing the fol-
lowing Pulley and Flywheel -
Alignment.
Belt - Replacement
(Refer to the Outfit Parts Manual
for replacement belt part number.)
Serious injury or
damage may
occur if parts of the body or loose
items get caught in moving parts.
Never operate the outfit with the
belt guard removed. The belt
guard should be removed only
when the AIR compressor power
is disconnected.
1. Turn air compressor off, lock
out the power supply, and
relieve all air pressure from the
air tank.
2. Remove the belt guard.
3. Mark pump position on saddle.
4. Loosen the motor mounting
screws and slide the motor
toward the air compressor.
5. Remove the belt and replace
with a new one.
Downward Force
Deflection
6. See the "Adjust Belt Tension"
before tightening motor mount-
ing screws.

19-ENG D25235
Air Compressor Pump Intake
and Exhaust Valves
Once a year have a Trained Service
Technician check the air compressor
pump intake and exhaust valves.
Inspect Air Lines and Fittings
for Leaks
1. Turn air compressor off, lock out
the power supply, and relieve all
air pressure from the air tank.
2. Apply a soap solution to all air
line fittings and connections/pip-
ing.
3. Correct any leaks found.
IMPORTANT: Even minor leaks can
cause the air compressor to over-
work, resulting in premature break-
down or inadequate performance.
Motor Pulley/Flywheel
Alignment
NOTE: Once the motor pulley has
been moved from its factory set loca-
tion, 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. Turn air compressor off, lock out
the power supply, and relieve all
air pressure from the air tank.
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. See Parts manual for
torque specifications.
Air compressor Head Bolts -
Torquing
The air compressor pump head bolts
should be kept properly torqued.
Check the torques of the head bolts
after the first five hours of operation.
Retighten if necessary. See Parts
manual for torque specifications.
7. Visually inspect the motor drive
pulley to verify that it is perpen-
dicular to the drive motor shaft.
Points B1 and B2 of Figure
should appear to be equal. If
they are not, loosen the setscrew
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
setscrew. See Parts Manual for
torque specifications.
9. Reinstall belt guard.

20-ENGD25235
SERVICE AND ADJUSTMENTS
Unit cycles automat-
ically 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.
To Replace or Clean Check
Valve
1. Release all air pressure from air
tank. See "To Drain Tank" in the
Maintenance section.
2. Turn air compressor off, lock out
the power supply, and relieve all
air pressure from the air tank.
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 ori-
entation 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 var-
nish 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.
In closed position
disc is visible.
In open
position
nothing is
visible.
Screwdriver