Central Pneumatic Air Compressor 68740, 67501 User Manual

2 HP, 8 Gallon 125 PSI

Portable Electric Air Compressor

Item 67501 / 68740

Read this material before using this product. Failure to do so can result in serious injury. SAVE THIS MANUAL.

When unpacking, make sure that the product is intact and undamaged.

If any parts are missing or broken, please call 1-800-444-3353 as soon as possible.

Visit our website at: http://www.harborfreight.com

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.

Contents

IMPORTANT SAFETY INFORMATION ...........................................................................................................................3

GENERAL COMPRESSOR SAFETY WARNINGS ................................................................................................... 3

AIR COMPRESSOR SAFETY WARNINGS .............................................................................................................. 5

GROUNDING ...................................................................................................................................................................6

110-120 V~ GROUNDED COMPRESSORS: COMPRESSORS WITH THREE PRONG PLUGS ............................6

SYMBOLOGY ............................................................................................................................................................7

SPECIFICATIONS ............................................................................................................................................................ 8

UNPACKING .................................................................................................................................................................... 8

INSTRUCTIONS FOR PUTTING INTO USE ...................................................................................................................8

FUNCTIONS ..............................................................................................................................................................8

WORK PIECE AND WORK AREA SET UP ..............................................................................................................9

ASSEMBLY/MOUNTING ........................................................................................................................................... 9

CHECKING THE OIL ...............................................................................................................................................10

GENERAL OPERATING INSTRUCTIONS .................................................................................................................... 11

EMERGENCY DEPRESSURIZATION ....................................................................................................................12

AUTOMATIC SHUT OFF SYSTEM ......................................................................................................................... 12

MAINTENANCE AND SERVICING ................................................................................................................................13

CLEANING, MAINTENANCE, AND LUBRICATION ..............................................................................................13

MAINTENANCE SCHEDULE .................................................................................................................................. 13

OIL MAINTENANCE................................................................................................................................................14

DRAINING MOISTURE FROM THE TANK ............................................................................................................. 14

AIR FILTER MAINTENANCE .................................................................................................................................. 14

TROUBLESHOOTING ............................................................................................................................................15

PARTS LIST ................................................................................................................................................................... 17

ASSEMBLY DIAGRAM ..................................................................................................................................................18

LIMITED 1 YEAR / 90 DAY WARRANTY ......................................................................................................................19

Page 2

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SKU 67501/68740

Save This Manual

Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference.

Important Safety Information

In this manual, on the labeling, and all other information provided with this product:

This is the safety alert symbol. It is

used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

b. Do not operate the Compressor in explosive

atmospheres, such as in the presence of

ammable liquids, gases or dust. Compressor motors produce sparks which may ignite the dust or fumes.

c. Keep children and bystanders away from an

operating compressor.

2. Electrical safety

a. Compressor plugs must match the outlet.

Never modify the plug in any way. Do not use any adapter plugs with a grounded compressor.

Standard plugs and matching outlets will reduce risk of electric shock.

b. Do not expose the compressor to rain or wet

conditions. Water entering a compressor will increase the risk of electric shock.

c. Do not abuse the cord. Never use the cord

for pulling or unplugging the compressor. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords

increase the risk of electric shock.

DANGER indicates a

hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a

hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION, used with the

safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE is used to address

practices not related to personal injury.

CAUTION, without the safety

alert symbol, is used to address practices not related to personal injury.

3. Personal safety

a. Stay alert, watch what you are doing and

use common sense when operating this compressor. Do not use this compressor while

you are tired or under the inuence of drugs,

alcohol or medication. A moment of inattention while operating a compressor may result in serious personal injury.

b. Use personal protective equipment. Always

wear eye protection. Safety equipment such as a dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.

c. Prevent unintentional starting. Ensure the

switch is in the off-position before connecting to power source or moving the compressor.

d. Only use safety equipment that has been

approved by an appropriate standards agency.

Unapproved safety equipment may not provide adequate protection. Eye protection must be ANSIapproved and breathing protection must be NIOSH-

approved for the specic hazards in the work area.

General Compressor Safety Warnings

WARNING Read all safety warnings and

instructions. Failure to follow the warnings and

instructions may result in electric shock, re and/

or serious injury.

Save all warnings and instructions for future reference.

1. Work area safety

a. Keep work area clean and well lit. Cluttered or

dark areas invite accidents.

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4. Compressor use and care

a. Do not use the compressor if the switch does

not turn it on and off. Any compressor that cannot be controlled with the switch is dangerous and must be repaired.

b. Disconnect the plug from the power source

of the compressor before making any adjustments, changing accessories, or storing it. Such preventive safety measures reduce the

risk of starting the compressor accidentally.

c. Store an idle compressor out of the reach of

children and do not allow persons unfamiliar with the compressor or these instructions to

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operate it. A compressor is dangerous in the hands of untrained users.

d. Maintain the compressor. Keep the compressor

clean for better and safer performance. Following instructions for lubricating and changing accessories. Keep dry, clean and free from oil and grease. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the compressor’s operation. If damaged, have the compressor repaired before use. Many

accidents are caused by a poorly maintained compressor.

e. Use the compressor in accordance with these

instructions, taking into account the working conditions and the work to be performed.

Use of the compressor for operations different

from those intended could result in a hazardous

situation.

5. Service

a. Have your compressor serviced by a qualied

repair person using only identical replacement parts. This will ensure that the safety of the

compressor is maintained.

Air Compressor Safety Warnings

1. Risk of re or explosion - Do not spray ammable

liquid in a conned area or towards a hot surface.

Spray area must be well-ventilated. Do not smoke

while spraying or spray where spark or ame is

present. Arcing parts - Keep compressor at least 20 feet away from explosive vapors, such as when spraying with a spray gun.

2. Risk of bursting - Do not adjust regulator higher than maximum stated pressure of attachment.

3. Risk of injury - Do not direct air stream at people or animals.

4. To reduce the risk of electric shock, do not expose to rain. Store indoors.

5. Wear ANSI-approved safety goggles during use.

6. Do not use to supply breathing air.

12. Compressor head gets hot during operation. Do not touch it or allow children nearby during or immediately following operation.

13. Release the pressure in the storage tank before moving.

14. The use of accessories or attachments not recommended by the manufacturer may result in a risk of injury to persons.

15. All air line components, including hoses, pipe,

connectors, lters, etc., must be rated for a

minimum working pressure of 150 PSI, or 150% of the maximum system pressure, whichever is greater.

16. USE OF AN EXTENSION CORD IS NOT RECOMMENDED. If you choose to use an extension cord, use the following guidelines:

RECOMMENDED MINIMUM WIRE

GAUGE FOR EXTENSION CORDS

(120 VOLT)

NAMEPLATE

AMPERES

(at full load)

0 – 6 18 16 16 14

6.1 – 10 18 16 14 12

10.1 – 12 16 16 14 12

12.1 – 16 14 12 Do not use.

EXTENSION CORD

LENGTH

25’ 50’ 100’ 150’

TABLE A

a. Make sure your extension cord is in good

condition.

b. Be sure to use an extension cord which is heavy

enough to carry the current your product will

draw. An undersized cord will cause a drop in line

voltage resulting in loss of power and overheating.

Table A shows the correct size to use depending

on cord length and nameplate ampere rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord.

17. Industrial applications must follow OSHA guidelines.

7. Do not use the air hose to move the compressor.

8. Drain Tank daily and after use. Internal rust causes tank failure and explosion.

9. Add correct amount of compressor oil before rst use and every use. Operating with low or no oil causes permanent damage and voids warranty.

10. Do not remove the Pressure Switch (54) cover or adjust the internal components.

11. Do not use the air hose to move the compressor.

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

18. Maintain labels and nameplates on the compressor. These carry important safety information. If unreadable or missing, contact Harbor Freight Tools for a replacement.

19. This product is not a toy. Keep it out of reach of children.

20. Operate unit on level surface. Check oil level daily

and ll to marked level if needed.

21. People with pacemakers should consult their

physician(s) before use. Electromagnetic elds in

close proximity to heart pacemaker could cause pacemaker interference or pacemaker failure.

SKU 67501/68740

22. WARNING: The brass components of this product contain lead, a chemical known to the State of California to cause birth defects (or other reproductive harm). (California Health & Safety code § 25249.5, et seq.)

23. The warnings, precautions, and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur. It must be understood by the operator that common sense and caution are factors which cannot be built into this product, but must be supplied by the operator.

SAVE THESE

INSTRUCTIONS.

repair or replacement of the electric cord or plug is necessary, do not connect the equipmentgrounding conductor to a live terminal.

4. Check with a qualied electrician or service personnel if the grounding instructions are not completely understood, or if in doubt as to whether the compressor is properly grounded.

5. Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the compressor’s plug.

6. Repair or replace damaged or worn cord immediately.

Grounding

TO PREVENT ELECTRIC

SHOCK AND DEATH FROM INCORRECT GROUNDING WIRE CONNECTION:

Check with a qualied electrician if you

are in doubt as to whether the outlet is properly grounded. Do not modify the power cord plug provided with the compressor. Never remove the grounding prong from the plug. Do not use the compressor if the power cord or plug is damaged. If damaged, have it repaired by a service facility before use. If the plug

will not t the outlet, have a proper outlet installed by a qualied electrician.

110-120 V~ Grounded Compressors: Compressors with Three Prong Plugs

1. In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This compressor is equipped with an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances.

Grounding

120 V~ 3-Prong Plug and Outlet

(for up to 120 V~ and up to 15.5 A)

7. This compressor is intended for use on a circuit that has an outlet that looks like the one illustrated above in 120 V~ 3-Prong Plug and Outlet. The compressor has a grounding plug that looks like the plug illustrated above in 120 V~ 3-Prong Plug and Outlet.

8. The outlet must be properly installed and grounded in accordance with all codes and ordinances.

9. Do not use an adapter to connect this compressor to a different outlet.

Symbology

Double Insulated

Canadian Standards Association

Underwriters Laboratories, Inc.

Volts Alternating Current

2. Do not modify the plug provided – if it will not t the

outlet, have the proper outlet installed by a qualied

electrician.

3. Improper connection of the equipment-grounding conductor can result in a risk of electric shock. The conductor with insulation having an outer surface that is green with or without yellow stripes is the equipment-grounding conductor. If

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n0 xxxx/min.

Amperes

No Load Revolutions per Minute (RPM)

Page 5

Specications

Electrical Requirements

Amperage

Air Outlet Size 1/4”-18 NPT

Air Pressure

Air Tank Capacity 8 Gallons

Air Flow Capacity

Oil Capacity 5.6 oz.

Oil Type

Decibel Level 88 dB @ 1m

120 V~ / 60 Hz / 2 HP

14A (Dedicated circuit recommended)

Auto Shut-Off @ 125 PSI Restart @ 95 PSI

4.5 SCFM @ 90 PSI

5.5 SCFM @ 40 PSI

SAE 30W non-detergent Air Compressor Oil (Sold separately) (SKU 95048)

Instructions for putting into use

Functions

Oil Sight

Glass

(33)

ON/OFF Power

(On Pressure

Switch (54))

(Top View)

Pressure

Switch

(54)

Figure 1

Tank Pressure

Gauge (53)

Lever

Safety

Valve (73)

Drain Valve (66)

OFF

Tank Pressure

Gauge (53)

Output

Pressure

Gauge

(77)

in-line shutoff

valve, air hose

ON/OFF

Power

Lever

Pressure

Regulator

(74)

Pressure

Regulator

(74)

Coupler for

attaching

and tool

Output

Gauge

(77)

Read the ENTIRE IMPORTANT SAFETY

INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product.

TO PREVENT SERIOUS

INJURY FROM ACCIDENTAL OPERATION: Turn the Power Lever “OFF” and unplug the Air Compressor from its electrical outlet before assembling or making any adjustments to the compressor.

Note: For additional information regarding the parts

listed in the following pages, refer to the Assembly Diagram near the end of this manual.

Work Piece and Work Area Set Up

1. Designate a work area that is clean and well-lit. The work area must not allow access by children or pets to prevent injury.

2. Locate the Compressor on a at level surface to ensure proper pump lubrication and to prevent damage to the unit. Keep at least 12” of space around the unit to allow air circulation.

3. Route the power cord from the compressor to the grounded wall outlet, along a safe path without

creating a tripping hazard or exposing the power

cord to possible damage.

Page 6

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SKU 67501/68740

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