Craftsman 919176230, 919176951, 919176840 Owner’s Manual

S _AIRS

CRAFTSMAN

NOTE: For identificationof Repair Parts, see separate Parts List

Manual.

GENERAL MANUAL FOR

OIL LUBRICATED

SINGLE STAGE

AIR COMPRESSORS

Record in the spaces provided. (1) The model number which can be

found on the maintenance label on the left front of the air tank.

(2) The code number which can be

found on the foil label on the rear of the air tank.

(3) The Manufacturers Number(ASME

code compressors only) is located on the metal data plate which is

welded ontothe backsideofthe air tank. (This data plate Ispaintedthe

same color as the tank.)

IMPORTANT:

Read the Safety Guidelines

and All Instructions Carefully Before Operating

i MG-OILLUBE 8/22/90 i

Retain these numbers forfuture reference.

SAFETY GUIDELINES ASSEMBLY

OPERATION MAINTENANCE

TROUBLESHOOTING

REPAIR PARTS

Sears, Roebuck and Co., Chicago, IL 60684 U.S.A.

Model No.

Code No.

Mfg. No.

TABLE OF CONTENTS

Page

WARRANTY .................................................... 2

SAFETY GUIDELINES ................................... 3

WARNING CHART .......................................... 3

SPECIFICATIONS ............................................. 5

GLOSSARY ............................................................. 5

ACCESSORIES FOR USE WITH

SEARS AIR COMPRESSORS ................... 6

GENERAL INFORMATION ............................ 6

ON-RECEIPT INSPECTION ........................... 6

DESCRIPTION OF OPERATION ................... 7

ASSEMBLY ................................................ 8

Items Needed for Assembly ...................... 8

InstallingHandle ........................................ 8

InstallingRubber Foot Strip and Wheels .... 9

InstallingTank Pressure Gauge ................ 9

InstallingRegulator

(for outfits supplied with regulators) ............ 9

Installing Shut-Off Valve

(outfits without regulators) .......................... 9

INSTALLATION AND

BREAK-IN PROCEDURES ............................ 10

Location of Air Compressor ................................ 10

Voltage and Circuit Protection ...................... 10

Extension Cords ................................................ 10

Lubrication and Oil ............................. ........... 10

Page

Grounding Instructions ................................ 10

Piping ........................................................ 11

Additional Regulators and Controls ............ 11

Break-in Procedures .................................. 12

OPERATING PROCEDURES ........................ 12

Daily Start-Up Checklist ................................ 12

Normal Operation ......................................... 13

MAINTENANCE .............................................. 14

SERVICE INSTRUCTIONS ............................. 15

Air Filter- Inspection and Replacement ...... 15

Oil- Checking and Changing ...................... 15

Check Valve - Inspection and Replacement 15 Safety Valve - Inspectionand Replacement 15

Belt Replacement ...................................... 16

Belt Guard - Removal and Installation ........ 16

Pressure Switch - Replacement .................. 16

Motor Overload Protector - Reset .............. 17

Motor Lubrication ........................................ 17

Motor - Replacement .................................. 17

Air Compressor Pump - Replacement ........ 17

Pulley and Flywheel - Alignment ................ 18

Manifold/Regulator Assembly -

Removal and Installation ............................ 18

Separate Regulator or Shut-Off Valve -

Replacement .............................................. 18

Servicing Intake and Exhaust Valves .......... 18

STORAGE ........................................................ 19

TROUBLESHOOTING GUIDE ..................... 20

HOW TO ORDER REPAIR PARTS ................. 24

FULL ONE YEAR WARRANTY ON AIR COMPRESSORS

Ifthis air compressor fails dueto a defect in material orworkmanship within one yearfrom the date of purchase, RETURN IT TO THE NEAREST SEARS SERVICE CENTER/DEPARTMENT THROUGHOUT THE UNITED STATES AND SEARS WILL REPAIR IT, FREE OF CHARGE.

Ifthis aircompressoris used for commercial or rental purposes, the warranty willapply for ninetydays from the date of

purchase.

This warranty gives you specific legal rights and you may have other rights which vary from state to state.

Sears, Roebuck and Co., Sears Tower, Dept. 731CR-W, Chicago, IL 60684

Thismanualcontainsinformationthatisimportantforyouto knowandunderstand.Thisinformationrelatesto protectingYOURSAFETYandPREVENTINGEQUIPMENTPROBLEMS.Tohelpyourecognizethisinformation, weusethefollowingsymbols.Pleasereadthemanualandpayattentiontothesesections.

URGENT SAFETY INFORMATION - A

HAZARD THAT WILL CAUSE SERIOUS INJURY OR LOSS OF LIFE,

Information for preventing damage to equip-

ment.

HAZARDS CAN OCCUR IF EQUIPMENT IS NOT USED PROPERLY.

PLEASE READ THE FOLLOWING CHART,

WHAT TO LOOK FOR

Hot Parts

Flammable Vapors

WHAT COULD HAPPEN

The compressorheadanddischarge tube(s)get hot when the air compressor is running. If you touch

them, youcanbeseriouslyburned.

It isnormalfor the motorandpressure switch to spark when the compressor starts or stops. A spark can ignite flammable vapors from gasoline or solvents causing a fire or explosion.

IMPORTANT SAFETY INFORMATION

- A HAZARD THAT MIGHT CAUSE SERIOUS INJURY OR LOSS OF LIFE.

NOTE

Information you should pay special attention to.

i ................

HOW TO PREVENT IT

Nevertouch the aircompressorheadortubesduring or immediatleyafteroperation.

Alwaysoperatethe air compressorin wellventilated areas;free of gasolineorsolventvapors.

Do not operatethe compressornear the sprayarea.

Unsuitable Solvents

Compressed Air

The solvents 1,1,1 -Trichloroethane and Methylene Chloride can chemically reactwith aluminum used in paint spray guns, paint pumps,etc., and cause an explosion. These solvents can also react with galva- nized components and causecorrosion andweaken-

ing ofparts. This doesnotaffect your air compressor, but it may affect the equipment being used.

Compressed air can propel dust, dirt or loose par- ticles it comes incontact with. These propelled par- ticles may cause serious injury or damage.

Toomuch air pressure appliedto airtoolsoraccesso- riescancause damageor riskofbursting.

Ifspraying a flammable material, provide ample ven-

tilation. Never spray in a closed area. There must be

a flow of fresh air at all times.

If the material you intend to spray contains the sol- ventslisted atleft (read the label or data sheet), do not use accessoriesthat contain aluminum or galvanized

parts.You must eitherchange the material youintend

to spray,or use only stainless steel spray equipment.

Never pointanynozzle orsprayertoward a person or any part of the body.

Alwayswear safety goggles or glasses whenusingthe air compressor.

Always turnthe air compressor off before attachingor

removing accessories.

Checkthe manufacturer's pressure ratingfor airtools and accessories. The input pressure to a tool or accessory must never exceed the manufacturer's

rating. A pressure regulator must be installedbefore

using accessories rated less than 125 PSI.

Continued...

WHAT TO LOOK FOR

SAFETY GUIDELINES

WHAT COULD HAPPEN

HOW TO PREVENTIT

Electricity

MovingParts

Toxic Vapors

Your air compressor is powered by electricity. Like any other electrically powered device, if it is not used

properly it may cause electrical shock.

This compressorcyclesautomaticallywhen thepres-

sureswitchisinthe ON/AUTOposition.Ifyouattempt repairormaintenancewhilethecompressorisoperat-

ing,or withtheswitchinthe ON/AUTO position,you

can expose yourself to moving parts. These moving parts cancause serious injury or damage ifthey come

into contact with you or your clothing.

itis normalfor compressedairtocontaintoxicor irri-

tating vapors. Such vapors are harmful if inhaled.

Wiring of the pressure switch,motor and ON/OFF switch shouldbe done by a licensed electrician in accordancewithnationaland local codes.

Always unplug the air compressor prior to mainte- nance or repair.

Never use the air compressoroutdoorswhen it is raining.

Always plug the cordintoan electrical outletwiththe specified voltage and adequate fuse protection.

Never operatethe compressorwiththe belt guard

removed.

Always unplugthe unit and release air pressure from the tank and any accessories before doing repair or

maintenance.

Never directly inhalethecompressedair produced by

this unit.

Air Tank

Certain materials you are spraying (like paint, weed killer, sand or insecticide) can be harmful ifyou inhale

them.

Modifications to the air compressor in an attempt to reach higher air pressure can cause the air tank to

rupture or explode.

Read labels and safety data for all materials you spray. Follow all safety precautions.

Usea maskor respiratorifthere isachance ofinhaling

toxic sprayed materials. Masks and respirators have

limits and will only provide protection against some kinds and limited amounts of toxic material. Read

mask and respirator instructions carefully. Consult with asafety expert or industrial hygienist ifyou arenot sure about the use of a certain mask or respirator.

Do notadjust, remove or tamperwiththesafetyvalve or pressure switch. If safety valve or pressure switch replacement isnecessary, a part with the same pres-

sure rating must be used.

Forservicereplacementuseonlythe motors,pulleys and belts designed as standard service replacement parts as indicated in parts list. Use of improper parts could cause overloading of your unit and electrical

supply.

Do not substitutea gas engine for the motor...the

compressor was not designed to be powered by a gasoline engine.

Changing theairtank willcause ittoweaken.Thetank can rupture or explode.

Never replacethe compressorpump with a different model. Never increasethecompressorpump speed.

Neverdrillinto,weldorinanyway modifytheairtank. Do notrepaira leakingtank;it mustbe replaced.

I SPECIFICATIONS I

Refer to Outfit Parts Bulletin for the specifications of

you rcompressor. Use only afuse or circuit breaker that

isthe same rating as the branch circu itthe aircompres-

sor is operated on. If the compressor is connected to a circuit protected by fuses, use dual element time delay

fuses, as noted in that service bulletin.

Refer to Outfit Parts Bulletin for your com- pressor. Certain air compressor models

can be operated on a 15 amp circuit if:

1.Voltage supply to circuit is normal.

2.Circuit is not used to supply any other electrical needs (lights, appliances, etc.)

3. Extension cords comply with specifica- tions in this manual.

4.Circuit is equipped with 15 amp circuit

breaker or 15 amp dual element time de- lay fuse. Use a Fusetron Type "T" time

delay fuse.

If any of the above conditions cannot be met, or if operation of the compressor re- peatedly causes interruption of the power, it may be necessary to operate it from a 20 amp circuit.

Some models have a dual voltage motor, 120 and 240 volt. They are wired for 120 volt but can be converted to 240 volt operation. Instructions for connecting these motors for operation at 240 volt can be found printed on the inside of the motor covers or on the nameplate of

these motors.

Certain air compressor models can be con- verted to 240 volts from 120 volt operation. When converting a specific model to 240 volt operation, the attached three-prong 120

volt plug must be replaced with the three- prong 240 volt plug (purchase locally) or

order line cord Part No. SUDL-404-1.

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.

ASME: American Society of Mechanical Engineers;

made, tested, inspected and registered to meet the

standards of the ASME.

U.L. Listed: Underwriter Laboratories; Samples of

compressor outfits, taken from production, were sub- mitted to U.L. and found to comply with their require- ments for design and performance.

Cut-In Pressure: While the motor is off, air tank pressu redrops as you continue to use your accessory.

When the tank pressure drops to a certain low levelthe

motor will restart automatically. The low pressure at

which the motorautomatically re-starts iscalled "cut-in

pressure."

Cut-Out Pressure: When you turn on your air com- pressor and itbegins to run, air pressure inthe 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 highpressure atwhich the motor shutsoff iscalled

"cut-out pressure."

Thefollowingaccessoriesareavailablethroughthecurrentgeneralsalecatalogoratfull-lineSearsstores.

•SPRAY GUNS

•BLOW GUNS

•AIR CAULKING GUNS

•AIR POWERED WASHER GUNS

"SANDBLASTERS

•AIR BRUSHES

•AIR LINE FILTERS

•TIRE AIR CHUCKS

•PAINT TANKS

•AIR TANKS

•INFLATOR KITS

•QUICK CONNECTOR SETS

(various sizes)

.VlSCOSIMETER

•AIR PRESSURE REGULATORS

•OIL FOG LUBRICATORS

•AIR TOOLS: Sanders

Drills Impact Wrenches

Hammers

•AIR HOSE: 1/4", 5/16" or 3/8" I.D. in various lengths

.NAILER/STAPLERS

Decking Finishing Farming Carpenting Roofing Upholstery Siding Picture Framing

•DRAIN CLEANER

•DUSTER GUN

You have purchased an air compressor unit consisting of a 2 cylinder, single-stage air compressor pump, an

air tank, air hose, wheels, handle, associated controls and instruments. You may also find an air chuck.

Your air compressor can be used for operating paint spray guns, air tools, caulking guns, grease guns, air brushes, sandblasters, inflating tires and plastic toys, spraying weed killers, insecticides, etc. An air pressure

regulator is recommended for most of these applica-

tions.

An air line filter is usually required for removal of

moisture and oil vapor in compressed air when apaint

spray gun is used.

GENERAL INFORMATION

_n_iine_u_r_catoris usu

prolong tool life.

Separate air transformers which combine the functions of air regulation and/or moisture and dirt removal should be used where applicable.

These accessories can be purchased from most Sears stores or from the Sears General or Power Tool

Catalog.

i ON-RECE PTINSPECT ON I

Each air compressor outfit is carefully checked before

shipment. With improper handling, damage may result

in transit and cause problems in compressor opera-

tion, a bent crankshaft, etc.

Immediately upon arrival, check equipment for both concealed and visible damages to avoid expenses being incurred to correct such problems. This should be done regardless of any visible signs of damage to the shipping container. Report any damages to carrier and arrange for inspection of goods immediately.

DESCR PT ONOFOPERAT ON!

L , i

Drain Valve: At the base of the air tank to drain con-

densation at the end of each use.

Motor Thermal Overload Protector: The electric motor has an automatic thermal overload protector. If

the motor overheats for any reason, the thermal over-

load protector willshut off the motor. The motor must

be allowed to cool down before restarting. ON/AUTO - OFF Switch: Turn this switch ON to

provide automatic power to the pressure switch and OFF to remove power.

Air Intake Filter: This filter is designed to clean air coming intothe pump. Thisfilter must always be clean and ventilation openings free from obstructions. See

"Maintenance".

Air Compressor Pump: To compress air, the piston

moves up and down in the cylinder. On the down-

stroke, air isdrawn inthrough theair intake valves. The exhaust valve remains closed. On the upstroke of the

piston, air iscompressed. The intake valves close and compressed air is forced out through the exhaust valve, through the outlettube, throughthe check valve

and into the air tank. Working air is not available until the compressor has raised the airtank pressure above that required at the air outlet.

Shut-off Valve: Turn the knob counterclockwise to

open the valve and clockwise to close.

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 itsfactory setpressure (slightlyhigher than the pressure switch cut-out setting).

Regulator: The air pressure coming from the air tank is controlled by the regulator knob. Turn the knob clockwiseto increase pressure and counter-clockwise

to decrease pressure. To avoid minor readjustment after making a change in pressure setting, always approach the desired pressure from a lower pressure. When reducing from a higher to a lower setting, first reduce to some pressure less than that desired, then bringup tothe desired pressure. Depending onthe air requirements of each particular accessory, the outlet regulated air pressure may have to be adjusted while

operating the accessory.

Outlet Pressure Gauge: The outlet pressure gauge indicatesthe airpressure available atthe outlet sideof

the regulator. This pressure is controlled by the

regulator and is always less or equal to the tank

pressure. See "Operating Procedures".

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 ofthe pressure switch, isdesigned toautomatically release compressed air from the com- pressor head and the outlettubewhen the aircompres-

sor reaches "cut-out" pressure or is shut off. If the air is not released, the motor will try to start, but will be

unableto. The pressure release valve allowsthe motor

to restart freely. When the motorstops running, airwill

be heard escaping from the valve for a few seconds. No air should be heard leaking when the motor is

running.

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.

Tank Pressure Gauge: The tank pressure gauge in- dicates the reserve air pressure in the tank. On outfits

with no pressure regulator, this is also the pressure available at the air outlet.

Regulator: The air pressure coming from the air tank

is controlled by the regulator knob. Turn the knob clockwise to increase pressure and counterclockwise

to decrease pressure. To avoid minor readjustment

after making a change in pressure setting, always approach the desired pressure from a lower pressure.

When reducing from a higher to a lower setting, first

reduce to some pressure less than that desired, then bringup to the desired pressure. Depending on the air requirements of each particular accessory, the outlet regulated air pressure may have to be adjusted while

you are operating the accessory. Some models have shut-off valves only and do not include regulators.

ASSEMBL Y INSTRUCTIONS .......................I

Items Needed for Assembly

16 oz. of Sears compressor oil, Sears 9-16426 or

SAE 20-20W (Grade SF) pipe thread sealant

• a9/16" socket or open-end wrench for attaching the wheels

, a 7/16" open-end wrench for attaching the foot ex-

tension bracket and air pressure gauge . a 1/4" open-end wrench to tighten handle set screw , an adjustable wrench for attaching the shut-off valve,air

outlet adapter and pressure regulator.

Installing Handle

THE WHEELS AND HANDLE DO NOT PRO- VIDE ADEQUATE CLEARANCE, STABIL-

ITY OR SUPPORT FOR PULLING THE UNIT UP AND DOWN STAIRS OR STEPS. THE

UNIT MUST BE LIFTED OR PUSHED UP A RAMP. DO NOT LIFT THE UNIT BY THE MANIFOLD ASSEMBLY. THE UNIT CAN

BE DAMAGED.

1. Insert the open end of the handle under the saddle (Fig. 1). Before attaching handle, you may have to pull the open ends of the handle apart so they fit

tightly against the side of the saddle. Looking infrom the open end of the saddle, position the handle

toward the two bent tabs, on the inside walls of the

saddle. Slowlypushtheopen ends of the handle onto both tabs atthe sametime (Fig. 2). Continue pushing

the handle into the saddle until the holes on the side of the saddle and handle are in line.

2. Guide the straight end of each retaining clip through the saddle hole and both handle holes (Fig. 3).

3. Rotate each retaining clip clockwise and press down until it snaps into place over the pull handle (Fig. 4).

4. If the handle has excessive movement, it is improp- erly installed. Check the following.

A. Are both tabs inside the handle (Step #1)? B. Does each clip pass through both the saddle

and handle (Step #2)?

FIG. 1

"-d.m ........... I_3

IMSIN1NI"I_D

I_1 TABS

FIG. 3

FIG. 2

! T

,t ,t

FIG. 4

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