Craftsman 919.167620-C User manual
Owner’s Manual
Manual d'utiliation
AIR COMPRESSOR
COMPRESSUER D'AIR
Model No.
Modèle No.
919.167620-C
CAUTION: Read the Safety Guidelines
and All Instructions Carefully Before
Operating.
N028678 Rev. 0 03/02/09
ATTENTION: Lisez ce guide de
l'utilisateur et toutes les mesures de
sécurité avant d'utiliser cet appareil.
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N028678
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ACCESSORIES ............................................10
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FRANÇAIS ............................................. 26-45
......................back cover
If this product fails due to a defect in material or workmanship within one year
from the date of purchase, Sears will at its option repair or replace it free of
charge. Contact Sears at 1-800-4-MY-HOME®to arrange for repair, or return it
to the place of purchase for replacement.
If this product is used for commercial or rental purposes, this warranty applies
for only ninety days from the date of purchase.
This warranty gives you specific legal rights and you may have other rights
which vary from state to state.
3- ENG N028678
This manual contains information that is important for you to know and
understand. This information relates to protecting and
. 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, will
result in
Indicates a potentially
hazardous situation
which, if not avoided, result in
Indicates a potentially
hazardous situation
which, if not avoided, result in
Used without the
safety alert symbol
indicates a potentially hazardous
situation which, if not avoided,
result in
-
-
Model No. 919.167620-C
Running HP *1.6
Bore 2.875" (73.0 mm)
Stroke 1.45" (36.8 mm)
Voltage-Single Phase 120V/60HZ
Minimum Branch Circuit Requirement 15 amps
Fuse Type Time Delay
Air Tank Capacity, gallons 33 (127.9 litres)
Approx. Cut-In 120 PSI
Approx. Cut-out 150 PSI
SCFM @ 40 psig *6.3
SCFM @ 90 psig *4.9
* Tested per ISO 1217
Refer to Glossary for abbreviations.
4- ENG
N028678
• Itisnormalforelectricalcontacts
within the motor and pressure
switch to spark.
• Alwaysoperatethecompressor
in a well ventilated area free of
combustible materials, gasoline, or
solvent vapors.
• Ifelectricalsparksfromcompressor
come into contact with flammable
vapors, they may ignite, causing fire
or explosion.
• Ifsprayingflammablematerials,
locate compressor at least 20 feet
(6.1 m) away from spray area. An
additional length of air hose may be
required.
• Storeflammablematerialsin
a secure location away from
compressor.
• Restrictinganyofthecompressor
ventilation openings will cause
serious overheating and could
cause fire.
• Neverplaceobjectsagainstoron
top of compressor.
• Operatecompressorinanopen
area at least 12" (30.5 cm) away
from any wall or obstruction that
would restrict the flow of fresh air to
the ventilation openings.
• Operatecompressorinaclean,dry
well ventilated area. Do not operate
unit indoors or in any confined area.
• Unattendedoperationofthis
product could result in personal
injuryorpropertydamage.To
reduce the risk of fire, do not
allow the compressor to operate
unattended.
• Alwaysremaininattendancewith
the product when it is operating.
• Alwaysturnoffandunplugunit
when not in use.
• Thecompressedairdirectlyfromyour
compressor is not safe for breathing.
The air stream may contain carbon
monoxide, toxic vapors, or solid particles
from the air tank. Breathing these
contaminantscancauseseriousinjuryor
death.
• Neveruseairobtaineddirectlyfromthe
compressor to supply air for human
consumption. The compressor is not
equipped with suitable filters and
in-line safety equipment for human
consumption.
• Exposuretochemicalsindustcreatedby
power sanding, sawing, grinding, drilling,
and other construction activities may be
harmful.
• Sprayedmaterialssuchaspaint,paint
solvents, paint remover, insecticides,
weed killers, may contain harmful vapors
and poisons.
• Workinanareawithgoodcross
ventilation. Read and follow the safety
instructions provided on the label or
safety data sheets for the materials you
are spraying. Always use certified safety
equipment: NIOSH/OSHA respiratory
protection or properly fitting face mask
designed for use with your specific
application.
5- ENG N028678
The air tank on your Air Compressor is designed and may be UM coded
(for units with air tanks greater than 6" (152 mm) diameter) according to ASME
Section VIII, Div. 1 rules. All pressure vessels should be inspected once every two
years. To find your state pressure vessels inspector, look under the Division of Labor
and Industries in the government section of a phone book .
The following conditions could lead to a weakening of the air tank, and result in a
violent air tank explosion:
• Failuretoproperlydraincondensed
water from air tank, causing rust
and thinning of the steel air tank.
• Drainairtankdailyoraftereach
use. If air tank develops a leak,
replace it immediately with a
new air tank or replace the entire
compressor.
• Modificationsorattemptedrepairs
to the air tank. • Neverdrillinto,weld,ormakeany
modifications to the air tank or its
attachments. Never attempt to
repair a damaged or leaking air
tank. Replace with a new air tank.
• Unauthorizedmodificationsto
the safety valve or any other
components which control air tank
pressure.
• Theairtankisdesignedto
withstand specific operating
pressures.Nevermakeadjustments
or parts substitutions to alter the
factory set operating pressures.
• Exceedingthepressureratingof
air tools, spray guns, air operated
accessories, tires, and other
inflatables can cause them to
explode or fly apart, and could
resultinseriousinjury.
• Followtheequipment
manufacturers recommendation
and never exceed the maximum
allowable pressure rating of
attachments. Never use compressor
toinflatesmalllowpressureobjects
such as children’s toys, footballs,
basketballs, etc.
• Over inflation of tires could result in
seriousinjuryandpropertydamage.
• Useatirepressuregaugetocheck
the tires pressure before each use
and while inflating tires; see the tire
sidewall for the correct tire pressure.
Air tanks, compressors and similar
equipment used to inflate tires can fill
small tires similar to these very rapidly.
Adjustpressureregulatoronairsupply
to no more than the rating of the tire
pressure. Add air in small increments and
frequently use the tire gauge to prevent
over inflation.
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N028678
• Your air compressor is powered by
electricity. Like any other electrically
powered device, If it is not used
properly it may cause electric
shock.
• Never operate the compressor
outdoors when it is raining or in wet
conditions.
• Never operate compressor with
protective covers removed or
damaged.
• Repairs attempted by unqualified
personnel can result in serious
injuryordeathbyelectrocution.
• Any electrical wiring or repairs
required on this product should be
performed by authorized service
center personnell in accordance
with national and local electrical
codes.
• Failure to
provide adequate grounding to
this product could result in serious
injuryordeathfromelectrocution.
Refer to
paragraph in the Installation
section.
• Make certain that the electrical
circuit to which the compressor
is connected provides proper
electrical grounding, correct voltage
and adequate fuse protection.
• Thecompressedairstreamcan
cause soft tissue damage to
exposed skin and can propel dirt,
chips, loose particles, and small
objectsathighspeed,resultingin
propertydamageorpersonalinjury.
• Alwayswearcertifiedsafety
equipment: ANSI Z87.1 eye
protection (CAN/CSA Z94.3)
with side shields when using the
compressor.
• Neverpointanynozzleorsprayer
toward any part of the body or at
other people or animals.
• Alwaysturnthecompressoroff
and bleed pressure from the air
hose and air tank before attempting
maintenance, attaching tools or
accessories.
7- ENG N028678
• Touchingexposedmetalsuchas
the compressor head, engine head,
engine exhaust or outlet tubes, can
result in serious burns.
• Nevertouchanyexposedmetal
parts on compressor during or
immediately after operation.
Compressor will remain hot for
several minutes after operation.
• Donotreacharoundprotective
shrouds or attempt maintenance
until unit has been allowed to cool.
• Movingpartssuchasthepulley,
flywheel, and belt can cause
seriousinjuryiftheycomeinto
contact with you or your clothing.
• Neveroperatethecompressor
with guards or covers which are
damaged or removed.
• Keepyourhair,clothing,andgloves
away from moving parts. Loose
clothes,jewelry,orlonghaircanbe
caught in moving parts.
• Airventsmaycovermovingparts
and should be avoided as well.
• Attemptingtooperatecompressor
with damaged or missing parts or
attempting to repair compressor
with protective shrouds removed
can expose you to moving parts
andcanresultinseriousinjury.
• Anyrepairsrequiredonthisproduct
should be performed by authorized
service center personnel.
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N028678
• Unsafeoperationofyourair
compressor could lead to serious
injuryordeathtoyouorothers.
• Reviewandunderstandall
instructions and warnings in this
manual.
• Becomefamiliarwiththeoperation
and controls of the air compressor.
• Keepoperatingareaclearofall
persons, pets, and obstacles.
• Keepchildrenawayfromtheair
compressor at all times.
• Donotoperatetheproductwhen
fatigued or under the influence of
alcohol or drugs. Stay alert at all
times.
• Neverdefeatthesafetyfeaturesof
this product.
• Equipareaofoperationwithafire
extinguisher.
• Donotoperatemachinewith
missing, broken, or unauthorized
parts.
• Aportablecompressorcan
fall from a table, workbench,
or roof causing damage to the
compressor and could result in
seriousinjuryordeathtothe
operator.
• Alwaysoperatecompressorina
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.
9- ENG N028678
• Seriousinjurycanresultfrom
attempting to lift too heavy an
object.
• Thecompressoristooheavyto
be lifted by one person. Obtain
assistance from others before
lifting.
RISK FROM NOISE
• Undersomeconditionsand
duration of use, noise from this
product may contribute to hearing
loss.
• Alwayswearcertifiedsafety
equipment: ANSI S12.6 (S3.19)
hearing protection.
Become familiar with these terms
before operating the unit.
Cubic feet per minute.
Standard cubic feet per min-
ute; a unit of measure of air delivery.
Pounds per square inch gauge;
a unit of measure of pressure.
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 Standards for
Safety.
Whilethemotor
is off, air tank pressure drops as you
continuetouseyouraccessory.When
the tank pressure drops to a certain
low level the motor will restart auto-
matically. The low pressure at which
the motor automatically restarts is
called "cut-in" pressure.
Whenanaircom-
pressor 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 automati-
cally 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.
Circuit carrying elec-
tricity from electrical panel to outlet.
10- ENG
N028678
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.
ACCESSORIES
This unit is capable of powering the following Accessories. The accessories are
available through the current Power and Hand Tool Catalog or full-line Sears
stores.
• InLineFilter
• TireAirChuck
• QuickConnectorSets(various
sizes)
• AirPressureRegulators
• OilFogLubricators
• AirHose:1/4"(6.4mm),3/8"
(9.5 mm) or 1/2" (12.7 mm) I.D. in
various lengths
Refer to the selection chart located on
the unit to select the tools this unit is
capable of powering.
1. Remove unit from carton and
discard all packaging.
• Locatetheaircompressorina
clean, dry and well ventilated
area.
• Theaircompressorshouldbe
located at least 12" (
30.5 cm)
away from the wall or other
obstructions that will interfere
with the flow of air.
• Placetheaircompressoronaflat
level surface resting on the rub-
ber bumpers and wheels
• Theaircompressorpumpand
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 portable air compressor is
equipped with a cord having a ground-
ing wire with an appropriate grounding
plug (see following illustrations).
1. The cord set and plug with this
unit contains a grounding pin.
This plug MUST be used with a
grounded outlet.
The outlet being used
must be installed and grounded in
accordance with all local codes and
ordinances.
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2. Make sure the outlet being used
has the same configuration as the
grounded plug.
See illustration.
Outlets
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 compres-
sor is properly grounded, have the
installation checked by a qualified
electrician.
If an extension cord must be used, be
sure it is:
• a3-wireextensioncordthathas
a 3-blade grounding plug, and a
3-slot receptacle that will accept
the plug on the product
• ingoodcondition
• nolongerthan50feet(15.2m)
• 12gauge(AWG)orlarger.(Wire
size increases as gauge number
decreases.10AWGand8AWG
may also be used. DO NOT USE
14OR16AWG.)
The use of an
undersized extension
cord will cause voltage to drop
resulting in power loss to the motor
and overheating. Instead of using an
extension cord, increase the working
reach of the air hose by attaching
another length of hose to its end.
Attach additional lengths of hose as
needed. Always use an air hose rated
300 PSI or greater.
Refer to the specification chart 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 to circuit must
comply with the National Electrical
Code.
2. Circuit is not used to supply any
other electrical needs.
3. Extension cords comply with
specifications.
4. Circuit is equipped with a 15 amp
circuit breaker or 15 amp time
delay fuse. 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 compres-
sor 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.
Whentransportingthecompressorina
vehicle, trailer, etc., make sure the tank
is drained and the unit is secured with
straps to prevent tipping. Use care
when driving to prevent tipping the unit
over in the vehicle. Damage can occur
to the compressor or surrounding
items if the compressor is tipped.
Always use two
people when lift-
ing and lift from
the recommended
lift points. DO
NOT lift by wheels
or shroud.
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N028678
pressure by "popping out" at its fac-
tory set pressure (slightly higher than
the pressure switch "cut-out" setting).
The outlet
pressure gauge indicates the air pres-
sure 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.
The tank pres-
sure gauge indicates the reserve air
pressure in the tank.
Controls the air pressure
shown on the outlet pressure gauge.
Pull the knob out and turn clockwise
to increase pressure and counterclock-
wisetodecreasepressure.Whenthe
desired pressure is reached push knob
in to lock in place.
READTHISOWNER’SMANUALANDSAFETYRULESBEFOREOPERATING
YOUR UNIT. Compare the illustrations with your unit to familiarize yourself with
thelocationofvariouscontrolsandadjustments.Savethismanualforfuture
reference.
Become familiar with these controls
before operating the unit.
Turn this
switch "Auto (I)" to provide automatic
power to the pressure switch and
"Off (O)" to remove power at the end
of each use.
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" pres-
sure.
If the pressure switch
does not shut off the air compressor
at its "cut-out" pressure setting, the
safety valve will protect against high
The wheels and
handle do not provide
adequate clearance, stability, or
support for pulling the unit up and
down stairs or steps. The unit must be
lifted or pushed up a ramp.
1. Grasp handle of compressor and
tilt compressor back to rest on
wheels.
2. Whenlocationisreachedslowly
lower compressor to ground.
Always store compressor in a ver-
tical position resting on the rubber
bumpers and wheels.
Outlet
Pressure
Pressure
13- ENG N028678
The
universal quick-connect body accepts
the three most popular styles of quick-
connect plugs: Industrial, automotive
(Tru-flate), and ARO. One hand push-
to-connect operation makes connec-
tions simple and easy.
Drain
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.
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.
Compresses air into the air tank.
Workingairisnotavailableuntilthe
compressor has raised the air tank
pressure above that required at the air
outlet.
Whentheair
compressor is
operating, the
check valve is
"open", allowing
compressed air to
entertheairtank.Whentheair
compressor reaches "cut-out"
pressure, the check valve "closes",
allowing air pressure to remain inside
the air tank.
Pressure Pressure
Release
The pressure
release valve
located on the
side of the pres-
sure switch, is
designed to
automatically release compressed air
from the compressor head and the out-
let tube when the air compressor reach-
es "cut-out" pressure or is shut off. The
pressure release valve allows the motor
torestartfreely.Whenthemotorstops
running, air will be heard escaping from
this valve for a few seconds. No air
should be heard leaking when the motor
is running or after the unit reaches "cut-
out" pressure.
Air
Filter
This filter is
designed to clean
air coming into the
pump. This filter
must always be
clean and ventila-
tion openings free
from obstructions. See "Maintenance".
: The motor
has a 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. Set the Auto/Off switch to "Off"
and unplug unit.
2. Allow the motor to cool.
3.
Plug the power cord into the
correct branch circuit receptacle.
4. Set the Auto/Off lever to "Auto"
position.
1. Set the Auto/Off switch to "Off".
Whentheunithasbeenturned
off, it is normal to hear a short hiss of
air being released.
This procedure is required the
air compressor is put into service and
when the check valve or a complete
compressor pump has been replaced.
1. Make sure the Auto/Off switch is
in the "Off" position.
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N028678
Push coupler back until it
clicks to prevent air from escaping
through the quick connect.
2.
Plug the power cord into the
correct branch circuit receptacle.
(Refer to
paragraph in the
Installation section of this
manual.)
3. Open the drain valve (counter-
clockwise) fully to permit air to
escape and prevent air pressure
build up in the air tank during the
break-in period.
as
.
4. Move the Auto/Off switch to
"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 by turning clockwise. The
air receiver will fill to "cut-out"
pressure and the motor will
stop.
The compressor is now ready for use.
1. Place Auto/Off switch to "Off".
2. Pull regulator knob out, turn
counter-clockwise until it stops.
Push knob in to lock in place.
3. Attach hose and accessories.
The hose or accessory will
require a quick connect plug if the
air outlet is equipped with a quick
connect.
Risk of unsafe
operation.
Compressed air from the unit may
contain water condensation and
oil mist. Do not spray unfiltered air
at an item that could be damaged
by moisture. Some air tools and
accessories may require filtered air.
Read the instructions for the air tools
and accessories.
1. Turn the Auto/Off switch to "Auto"
and allow tank pressure to build.
Motor will stop when tank pres-
sure reaches "cut-out" pressure.
2. Pull the regulator knob out and
turn clockwise to increase
pressure.Whenthedesired
pressure is reached push knob in
to lock in place. The compressor
is ready for use.
The compressor is ready for use.
15- ENG N028678
Check safety valve X
Inspect air filter X1
Drain air tank X
Check for unusual noise/vibration X
Check for air leaks* X
Clean compressor exterior X
* Tocheckforairleaksapplyasolutionofsoapywateraroundjoints.
Whilecompressorispumpingtopressureandafterpressurecuts
out, look for air bubbles to form.
1 - more frequent in dusty or humid conditions
To ensure efficient operation and lon-
ger life of the air compressor, a routine
maintenance schedule should be pre-
pared and followed. The above routine
maintenance schedule is geared to an
air compressor in a normal working
environment operating on a daily basis.
If necessary, the schedule should be
modified to suit the conditions under
which your air compressor is used.
The modifications will depend upon
the hours of operation and the work-
ing environment. Compressors in an
extremely dirty and/or hostile environ-
ment will require a greater frequency of
all maintenance checks.
See Operation section for the
location of controls.
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.
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N028678
All compressed air systems
generate condensate that accumulates
in any drain point (e.g., tanks, filter, after-
coolers, dryers). This condensate con-
tains lubricating oil and/or substances
which may be regulated and must be
disposed of in accordance with local,
state, and federal laws and regulations.
1. Set the Auto/Off switch to "Off"
and unplug unit.
2. Pull the regulator knob out and
turn 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 open-
ing drain valve (counter-clockwise)
on bottom of tank.
Risk of property
damage. Drain water
from air tank may contain oil and rust
which can cause stains.
6. After the water has been drained,
close the drain valve (clockwise).
The air compressor can now be
stored.
If drain valve is plugged,
release all air pressure. The valve can
then be removed, cleaned, the rein-
stalled.
1. Place Auto/Off switch to "Off".
2. Allow unit to cool.
3. Remove filter cover from base.
4. Remove element from filter base.
5. Place new element back in filter
base. Purchase replacement parts
from your local dealer or autho-
rized service center. Always use
identical replacement parts.
6. Snap filter cover to filter base.
Risk of property
damage. Do not
operate without air inlet filter
17- ENG N028678
5. Using an
Outlet
Nuts
adjust-
able
wrench
loosen
pressure
relief
tube nut
at air
tank.
Carefully
move pressure relief tube away
from check valve
6. Unscrew the check valve (turn
counterclockwise) using a 7/8"
open end wrench. Note the orien-
tation for reassembly.
7. Using a screwdriver, carefully push
the valve disc up and down.
In closed position
disc is visible.
In open
position
nothing is
visible.
Screwdriver
The valve disc should move
freely up and down on a spring which
holds the valve disc in the closed posi-
tion; if not the check valve needs to be
replaced.
8. Install the new check valve (turn
clockwise).
9. Replace the pressure release tube.
Tighten nut.
10. Replace the outlet tube and tight-
en nuts.
11. Replace the shroud.
12. Perform the Break-in Procedure.
See in the
Operation section.
1. Release all air pressure from air
tank. See in the
Maintenance section.
2. Unplug outfit.
3. Remove the shroud on the outlet
tube side. Remove screw
with T-20 Torx screwdriver and
loosen all the tabs on the shroud
with a flat screwdriver before
removing.
4. Usinganadjustablewrench,loos-
en outlet tube nut at air tank and
pump head. Carefully move outlet
tube away from check valve.
18- ENG
N028678
Before you store the air compressor,
make sure you do the following:
1. Review the Maintenance section
on the preceding pages and per-
form scheduled maintenance as
necessary.
2. Set the Auto/Off lever to "Off".
3. Turn the regulator counterclock-
wise 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.
7. After the water has been drained,
close the drain or drain valve.
If drain valve is plugged,
release all air pressure. The valve can
then be removed, cleaned, then rein-
stalled.
8. To protect the electrical cord
from damage wind electrical cord
loosely around the compressor
handle.
Store the air compressor in a clean
and dry location.
1. Release all air pressure from air
tank. See in the
Maintenance section.
2. Unplug compressor.
3. Remove shrouds.
4. Remove the outlet pressure gauge
and quick connect from the
regulator.
Outlet
Pressure
5. Remove the regulator.
6. Reapply pipe sealant to outlet
pressure gauge and quick
connect.
7. Assemble quick connect to new
regulator and tighten.
Regulator
Arrow Quick
Connect
Nipple
8. Apply pipe sealant tape to the
nipple.
9. Assemble the regulator.
Arrow indicates flow of air. Make
sure it is pointing in the direction
of air flow.
10. Use the hex on quick connect
to tightening regulator. Orient as
shown.
11. Assemble outlet pressure gauge.
Orient outlet pressure gauge to
read correctly.
12. Replace shrouds.
19- ENG N028678
Risk of Unsafe Operation. Unit cycles automatically when power
ison.Whenservicing,youmaybeexposedtovoltagesources,
compressed air, or moving parts. Before servicing unit unplug or disconnect
electrical supply to the air compressor, bleed tank of pressure, and allow the air
compressor to cool.
CAUSE
Excessive
tank pressure
- safety valve
pops off.
Pressure switch does not
shut off motor when
compressor reaches
"cut-out" pressure.
Move Auto/Off lever to the
"Off" position, if the outfit
does not shut off contact a
Trained Service Technician.
Pressure switch "cut-out"
too high. Contact a Trained Service
Technician.
Air leaks at fit-
tings. Tube fittings are not tight
enough. Tighten fittings where air can
be heard escaping. Check fit-
tings with soapy water solu-
tion.
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 to the "To Replace
Check Valve" in the Service
andAdjustmentsection.
Air leaks at
pressure switch
release valve.
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.
Air leaks
between head
and valve plate.
Leaking seal. Contact a Trained Service
Technician.
20- ENG
N028678
CAUSE
Pressure read-
ing on the regu-
lated pressure
gauge drops
when an acces-
sory is used.
It is normal for "some"
pressure drop to occur. If there is an excessive
amount of pressure drop when
theaccessoryisused,adjust
the regulator following the
instructions in the
paragraph in the
Operation section.
Adjusttheregulated
pressure under flow
conditions (while accessory is
being used).
KnockingNoise. Possible defect in safety
valve. Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Defective check valve. Replace check valve.
Compressor is
not supplying
enough air
to operate
accessories.
Prolonged excessive use of
air. Decrease amount of air usage.
Compressor is not large
enough for air requirement. Check the accessory air
requirement. If it is higher
than the SCFM or pressure
supplied by your air
compressor, you need a
larger compressor.
Hole in hose. Check and replace if required.
Check valve restricted. Replace check valve.
Air leaks. Tighten fittings.
Restricted air intake filter. Clean or replace air intake
filter. Do not operate the
air compressor with the fil-
ter removed. Refer to the
Air Filter paragraph in the
Maintenance section.
Regulator knob
has continuous
air leak.
Damaged regulator. Replace.
Regulator will
not shut off air
outlet.
Damaged regulator. Replace.
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