Central Pneumatic 94734 Set Up And Operating Instructions Manual

3 HP TWIN TANK AIR

COMPRESSOR

Model

94734

SET UP AND OPERATING INSTRUCTIONS

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Read this material before using this product.

Failure to do so can result in serious injury.

SAVE THIS MANUAL.

Copyright© 2006 by Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork con-

tained herein may be reproduced in any shape or form without the express written consent of Harbor Freight

Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual

product may differ slightly from the product described herein. Tools required for assembly and service may not

be included.

Revised Manual 10d

For technical questions or replacement parts, please call 1-800-444-3353.

SPECIFICATIONS

Motor Power

Air Tank Size 5 gallons

Pump Single stage

Air Outlet Fitting Size1/4 inch NPT barbed

Air Delivery

Pressure Switch On at 80 PSI; Off at 115 PSI

Safety Valve Releases pressure at 120 PSI

Features

13/4 HP (working), 3 HP (Peak), 1720 RPM;
120 V~, 60 Hz, 1 Phase, 11 A

#233060

3.8 CFM at 90 PSI; 4.5 CFM at 70 PSI; and
5 CFM at 40 PSI

Pressure gauge, Overload reset button,
Auto shutoff

SAVE THIS MANUAL

You will need this manual for the safety warnings and precautions, assembly, oper­ating, inspection, maintenance and cleaning procedures, parts list and assembly diagram.
Keep your invoice with this manual. Write the invoice number on the inside of the front
cover. Keep this manual and invoice in a safe and dry place for future reference.

GENERAL SAFETY RULES

WARNING!

READ AND UNDERSTAND ALL INSTRUCTIONS

Failure to follow all instructions listed below may

result in electric shock, re, and/or serious injury.

SAVE THESE INSTRUCTIONS

WORK AREA

Keep your work area clean and well lit.1. Cluttered benches and dark areas invite

accidents.

Do not operate compressors in explosive atmospheres, such as in the pres-2.

ence of ammable liquids, gases, or dust. Compressors create sparks which

may ignite the dust or fumes.

Keep bystanders, children, and visitors away while operating a compressor. 3.

Provide barriers or shields as needed.

SKU 94734 For technical questions, please call 1-800-444-3353. Page 2

REV 07b

ELECTRICAL SAFETY

Grounded compressors must be plugged into an outlet properly installed and 1.

grounded in accordance with all codes and ordinances. Never remove the

grounding prong or modify the plug in any way. Do not use any adapter plugs.

Check with a qualied electrician if you are in doubt as to whether the outlet

is properly grounded. If the compressors should electrically malfunction or break

down, grounding provides a low resistance path to carry electricity away from the

user.

Do not expose compressors to rain or wet conditions. 2. Water entering an elec-

tric motor will increase the risk of electric shock.

Do not abuse the Power Cord.3. Never use the Power Cord to pull the Plug from

an outlet. Keep the Power Cord away from heat, oil, sharp edges, or moving

parts. Replace damaged Power Cords immediately. Damaged Power Cords

increase the risk of electric shock.

AN EXTENSION CORD MUST 4. NEVER BE USED WITH THIS ITEM. Connecting

this item to an outlet through an extension cord MAY CAUSE ELECTRICAL

DAMAGE TO THE MOTOR and could present a FIRE HAZARD.

Always unplug the air compressor, and release the air pressure when not in use.5.

PERSONAL SAFETY

Stay alert. Watch what you are doing, and use common sense during use. Do 1.

not use while tired or under the inuence of drugs, alcohol, or medication. A

moment of inattention while operating may result in serious personal injury.

Dress properly. Do not wear loose clothing or jewelry. Contain long hair. 2.

Keep your hair, clothing, and gloves away from moving parts. Loose clothes,

jewelry, or long hair can be caught in moving parts.

Avoid accidental starting.3. Be sure the Power Switch is turned off before plug-

ging in. Plugging in compressors with the Power Switch on, invites accidents.

Remove adjusting keys or wrenches before turning the compressor on. 4. A

wrench or a key that is left attached to a rotating part of the compressor may result

in personal injury.

Do not overreach. Keep proper footing and balance at all times.5.

Use safety equipment. Always wear eye protection. 6. Make sure you are wearing

your protective clothing, safety glasses with side shields and dust mask or air respi-

rator, if appropriate.

Do not force the compressor. Use the correct compressor for your applica-1.

tion. The correct compressor will do the job better and safer at the rate for which it

SKU 94734 For technical questions, please call 1-800-444-3353. Page 3

TOOL USE AND CARE

is designed. Never attempt to force the compressor to provide more pressure than it

was designed for.

Do not use the compressor if the Power Switch does not turn it on or turn it 2.

off. Any compressor that cannot be controlled with the Power Switch is dangerous

and must be repaired or replaced.

Disconnect the Power Cord Plug from the power source before making any ad-3.

justments, changing accessories, or storing the compressor. Such preventive

safety measures reduce the risk of starting the compressor accidentally.

Keep idle compressors out of reach of children and other untrained persons. 4.

Compressors are dangerous in the hands of untrained users.

Maintain compressors with care. Keep all components of this product clean 5.

and dry. Do not use a damaged compressor. Tag damaged compressors “Do not

use” until repaired.

Check for misalignment or binding of moving parts, breakage of parts, and any 6.

other condition that may affect the compressor’s operation. If damaged, have

the compressor serviced before using. Many accidents are caused by poorly

maintained compressors.

Use only accessories that are recommended by the manufacturer for your 7.

model. Accessories that may be suitable for one compressor may become hazard-

ous when used on another compressor.

SERVICE

Compressor service must be performed only by qualied repair personnel. 1.

Service or maintenance performed by unqualied personnel could result in a risk of

injury.

When servicing a compressor, use only identical replacement parts. Follow 2.

instructions in the “Inspection, Maintenance, And Cleaning” section of this

manual. Use of unauthorized parts or failure to follow maintenance instructions may

create a risk of electric shock or injury.

SPECIFIC SAFETY RULES

CAUTION! Prior to its 1. rst use, and thereafter prior to each subsequent use,

make sure to ll the Air Compressor with a premium quality, 30 weight, non-

detergent compressor oil to the specied level. Running the Air Compressor

with no oil or with low oil will cause damage to the equipment and void its warranty.

Refer to the “Setup” instructions on page 7 for details on lling the Air Compressor

with oil.

When lling the Air Compressor with oil, make sure to 2. unscrew (do not pull)

the Oil Fill Cap to remove.

SKU 94734 For technical questions, please call 1-800-444-3353. Page 4

Use eye and ear protection. 3. Always wear ANSI-approved safety impact eye gog-

gles, and ear plugs when using the Air Compressor.

Make sure all tools and equipment used with the Air Compressor are rated to 4.

the appropriate air pressure capacity of the Air Compressor. Do not use any

tool or equipment that does not operate from 0-120 PSI. If necessary, check the

owner’s manual of the tool or equipment for its air pressure rating.

Always disconnect the Air Compressor from its electrical outlet, release any 5.

remaining air pressure from the unit, and disconnect all pneumatic tools and

equipment from the unit, before performing any services or maintenance, or

when not in use.

Avoid injury. Never direct the air jet at people or animals.6.

Inspect safety valve daily7. . If the safety valve is not working properly, tank pressure

can build up to dangerous levels. The tank could explode. For this reason, pull the

ring on the safety valve before each use and verify that it operates freely. Replace

safety valve if it does not operate freely.

Never remove or alter the factory sealed Safety Release Valve.

Do not attempt to readjust the automatic start and shutoff valves. 8. Any change

to the automatic ON/OFF pressure levels will cause additional stress on the motor,

which may result in shortened motor life.

Drain the Air Compressor’s air tank every day. 9. Do not allow moisture to build up

inside the Air Tank.

Do not unscrew the tank drain valve so that 10. more than four threads are show-

ing.

Avoid risk of tank explosion11. .

Avoid weakening of tank by draining condensation after each use.a.

Never modify tank by drilling holes, welding to it, or modifying it’s parts.b.

The tank is designed, and factory set, to operate within a specic pressure range. c.
For that reason, never make adjustments to, or substitute parts, to the compres­sor.

Avoid bodily injury from moving parts12. . The compressor cycles on automatically,

without notice. For this reason, always keep hands and arms away from compressor

parts when the unit is connected to electrical power. Always have compressor safety

guards in place before turning compressor on.

Use approved air hose13. . Never use plastic or PVC pipe (unless specied for Air

Compressors) to carry air under pressure. Regardless of its pressure rating, it can

burst under pressure.

Never plug the power cord of this product into an electrical outlet while stand-14.

ing on a wet or damp surface.

SKU 94734 For technical questions, please call 1-800-444-3353. Page 5

REV 07b