Central Pneumatic 68149 Installation manual

SIX GALLON OILLESS

AIR COMPRESSOR

Model

67696

68149

SET UP AND OPERATING INSTRUCTIONS

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

Read this material before using this product.

Failure to do so can result in serious injury.

SAVE THIS MANUAL.

contained 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.

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

Page 2 For technical questions, please call 1-800-444-3353. SKU 67696

68149

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.

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.

General 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.

Work area safety1.

Keep work area clean and well lit.a.

Cluttered or dark areas invite accidents.

Do not operate the Compressor inb.

explosive atmospheres, such as in

the presence of ammable liquids,

gases or dust. Compressor motors

produce sparks which may ignite the

dust or fumes.

Keep children and bystanders awayc.

from an operating compressor.

Electrical safety2.

Compressor plugs must match thea.

outlet. Never modify the plug in

any way. Do not use any adapter

plugs with grounded compressors.

Standard plugs and matching outlets

will reduce risk of electric shock.

Do not expose compressor to rainb.

or wet conditions. Water entering

a compressor will increase the risk of

electric shock.

Do not abuse the cord. Neverc.

use the cord for unplugging the

compressor. Keep cord away from

heat, oil, sharp edges or moving

Page 3For technical questions, please call 1-800-444-3353.SKU 67696

68149

parts. Damaged or entangled cords

increase the risk of electric shock.

Personal safety3.

Stay alert, watch what you area.

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.

Use personal protective equipment.b.

Always wear ANSI-approved eye

protection during setup and use.

Prevent unintentional starting.c.

Ensure the Power Switch (133) is in

the off-position before connecting

to power source or moving the

compressor.

Compressor use and care4.

Do not use the compressor if thea.

Power Switch (133) does not turn

it on and off. Any compressor that

cannot be controlled with the Power

Switch is dangerous and must be

repaired.

Disconnect the plug from theb.

power source before making any

adjustments, changing accessories,

or storing the compressor. Such

preventive safety measures reduce

the risk of starting the compressor

accidentally.

Store an idle compressor out ofc.

the reach of children and do not

allow persons unfamiliar with the

compressor or these instructions to

operate it. A compressor is dangerous

in the hands of untrained users.

Maintain the compressor. Keepd.

the compressor clean for better

and safer performance. Follow

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.

Use the compressor in accordancee.

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.

Service5.

Have your compressor serviced bya.

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

Risk of re or explosion - do not 1.

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.

Risk of bursting - do not adjust2.

regulator higher than marked

maximum pressure of attachment.

Risk of injury - do not direct air3.

stream at people or animals.

Do not use to supply breathing air.4.

Page 4 For technical questions, please call 1-800-444-3353. SKU 67696

68149

Do not leave the compressor5.

unattended for an extended period

while plugged in. Unplug the

compressor after working.

Keep compressor well-ventilated. Do6.

not cover compressor during use.

Drain Tank daily and after use. Internal7.

rust causes tank failure and explosion.

Do not remove the valve cover or adjust8.

internal components.

Compressor head gets hot during9.

operation. Do not touch it or allow

children nearby during or immediately

following operation.

Do not use the air hose to move the10.

compressor.

Release the pressure in the storage tank11.

before moving.

The use of accessories or attachments12.

not recommended by the manufacturer

may result in a risk of injury to persons.

All air line components, including hoses,13.

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.

USE OF AN EXTENSION CORD IS NOT14.

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)

EXTENSION CORD

LENGTH

25’ 50’ 100’ 150’

0 – 6 18 16 16 14

6.1 – 10 18 16 Do not use.

10.1 – 12 16 16 Do not use.

12.1 – 16 14 12 Do not use.

TABLE A

Make sure your extension cord is ina.

good condition.

Use an extension cord which is heavyb.

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.

Industrial applications must follow OSHA15.

guidelines.

Maintain labels and nameplates on the16.

compressor. These carry important

safety information. If unreadable or

missing, contact Harbor Freight Tools for

a replacement.

This product is not a toy. Keep it out of17.

reach of children.

People with pacemakers should18.

consult their physician(s) before use.

Electromagnetic elds in close proximity

to heart pacemaker could cause

pacemaker interference or pacemaker

failure.

WARNING: The brass components of19.

this product contain lead, a chemical

known to the State of California to cause

Page 5For technical questions, please call 1-800-444-3353.SKU 67696

68149

birth defects (or other reproductive

harm). (California Health & Safety code §

25249.5, et seq.)

The warnings, precautions, and20.

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.

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

In the event of a malfunction or1.

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.

Do not modify the plug provided – if it will2.

not t the outlet, have the proper outlet

installed by a qualied electrician.

Improper connection of the equipment-3.

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

repair or replacement of the electric cord

or plug is necessary, do not connect the

equipment-grounding conductor to a live

terminal.

Check with a qualied electrician or 4.

service personnel if the grounding

instructions are not completely

understood, or if in doubt as to whether

the compressor is properly grounded.

Use only 3-wire extension cords that5.

have 3-prong grounding plugs and

3-pole receptacles that accept the

compressor’s plug.

Repair or replace damaged or worn cord6.

immediately.

Page 6 For technical questions, please call 1-800-444-3353. SKU 67696

68149

125 V~ 3-Prong Plug and Outlet

(for up to 125 V~ and up to 15 A)

Grounding

This compressor is intended for use on7.

a circuit that has an outlet that looks

like the one illustrated above in 125

V~ 3-Prong Plug and Outlet. The

compressor has a grounding plug that

looks like the plug illustrated above in

125 V~ 3-Prong Plug and Outlet.

The outlet must be properly installed and8.

grounded in accordance with all codes

and ordinances.

Do not use an adapter to connect this9.

compressor to a different outlet.

Symbology

Double Insulated

Canadian Standards Association

Underwriters Laboratories, Inc.

V~ Volts Alternating Current

AAmperes

n0xxxx/min. No Load Revolutions per Minute

(RPM)

Page 7For technical questions, please call 1-800-444-3353.SKU 67696

68149

SPECIFICATIONS

Electrical

Requirements 120 V~ / 60 Hz / 10 A

Running HP 1.5 HP

Air Outlet Size 1/4” -18 NPT

Coupler Female Industrial-type Quick

Coupler

Air Pressure Auto Shut-Off @ 150 PSI

Restart @ 120 PSI

Air Tank Capacity 6 Gallons

Air Flow Capacity 2.5 SCFM @ 90 PSI

3.4 SCFM @ 40 PSI

Pump Single stage

Line Cord 6’10” x 14 AWG with 3-prong

plug

Thermal

Protection

Motor equipped with overheat

auto shutdown

Sound Level 90 Db (A)

NOTE: Allow adequate time when lling tires.

The larger the tire, the more time to ll is

needed.

NOTE: This product is designed for ination,

stapling, brad nailing and air brushing.

UNPACKING

When unpacking, make sure that the

item is intact and undamaged. If any parts

are missing or broken, please call Harbor

Freight Tools at 1-800-444-3353 as soon as

possible.

INSTRUCTIONS FOR PUTTING

INTO USE

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 Switch “OFF”,

unplug the Compressor from its

electrical outlet, and release all

air pressure from the air tank

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.

Functions

Figure 1

Output Air

Pressure

Gauge (109)

Regulator

Knob

Air Outlet

Tank Air

Pressure

Gauge (109)

Power

Switch

(133)

Safety Valve

(110)

Drain Valve

(107)

(Back of Compressor)

Compressor Area Set Up

Designate a work area that is clean and1.

well-lit. The work area must not allow

access by children or pets to prevent

injury.

Locate the Compressor on a at level 2.

surface to prevent tipping and damage.

Keep at least 12” of space around the

unit to allow air circulation.

Page 8 For technical questions, please call 1-800-444-3353. SKU 67696

68149

Route the power cord from the3.

compressor to the grounded wall outlet,

along a safe path without creating a

tripping hazard or exposing the power

cord to possible damage.

Set Up

Break in the new Air Compressor as1.

follows:

Make sure the Switch is OFF and thea.

unit is unplugged. Insert a male coupler

(sold separately) into the female Quick

Coupler and fully open all regulators

and valves.

Plug in the Power Cord.b.

Turn the Power Switch ON (133).c.

Let the unit run for 30 minutes. Air willd.

expel freely through the Coupler.

Turn the Power Switch OFF.e.

Unplug the Power Cord and remove thef.

male coupler.

Typical Air Line Setup

Recommeded Accessories

1/4” Air Hose•

Set of 1/4” Male and Female Quick Couplers•

Inline Desiccant Dryer/Filter or Water Filter•

Female

Quick Coupler

Female

Quick Coupler

1/4” Air Hose

Water Filter

(Airbrush Use)

Male

Quick

Coupler

Male

Quick

Coupler

Air

Compressor

Tool

2. Connect a regulator valve, an inline shut

off valve and a 1/4” NPT air hose to the

Quick Coupler (all sold separately). The

air hose must be long enough to reach

the work area with enough extra length

to allow free movement while working.

Note: Adding an in-line shutoff valve, such

as the female quick disconnect at the

compressor outlet, is an important

safety device because it controls

the air supply even if the air hose is

ruptured.

Depending on the tool which you will3.

be using with this compressor, you

may need to incorporate additional

components, such as an in-line oiler,

a lter, or a dryer (all sold separately).

Consult your air tool’s manual for needed

accessories.

GENERAL OPERATING

INSTRUCTIONS

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.

Regulator Knob

Decrease

Pressure

Figure 2

1. Turn the Regulator Knob

counterclockwise completely.

Figure 3

Drain Valve

(107)

Closed

2. Close the Drain Valve (107).

Page 9For technical questions, please call 1-800-444-3353.SKU 67696

68149

Plug the Air Compressor Power Cord3.

into a grounded 120 V electrical outlet.

Power Switch (133)

OFF

Figure 4

4. Turn the Power Switch (133) ON.

Allow the Air Compressor to build up5.

pressure. NOTE: BE SURE TO WAIT

UNTIL THE COMPRESSOR SHUTS

OFF BEFORE USING (ABOUT 4

MINUTES).

Regulator Knob

Increase

Pressure

Decrease

Pressure

Air Output

Figure 5

6. AFTER the Compressor builds up

enough pressure and shuts off, adjust

the Regulator Knob so that the air output

is enough to properly power the tool,

but the output will not exceed the tool’s

maximum air pressure at any time.

Turn the knob clockwise to increase

the pressure and counter-clockwise to

decrease pressure. Adjust the pressure

gradually, while checking the air output

gauge to set the pressure.

Note: At the beginning of the day’s rst use of

the Air Compressor, check for air leaks

by applying soapy water to connections

while the Air Compressor is pumping

and after pressure cut-out. Look for air

bubbles. If air bubbles are present at

connections, tighten connections. Do

not use the air compressor unless all

connections are air tight, the extra air

leaking out will cause the compressor to

operate too often, increasing wear on the

compressor.

Note: As long as the Power Switch (133) is

ON, the operation of the Air Compressor

is automatic, controlled by an internal

pressure switch. The Compressor will

turn on automatically when the air

pressure drops to 120 PSI, and will turn

off automatically when the air pressure

reaches 150 PSI. IMPORTANT: The

internal pressure switch is not user

adjustable. Do not make changes

to the air pressure settings of the

internal pressure switch. Any change

to the automatic pressure levels may

cause excess pressure to accumulate,

causing a hazardous situation and

voiding the warranty.

Close the in-line Shutoff Valve between7.

the compressor and the air hose.

Make sure the air tool’s throttle or switch8.

is in the off position.

Connect the air tool to the air hose.9.

Open the in-line Shutoff Valve.10.

Note: Allow adequate time when lling tires.

The larger the tire, the more time to ll is

needed.

Note: This product is designed for ination,

stapling, brad nailing and air brushing.

Use the air tool as needed.11.

After the job is complete, turn the Power12.

Switch OFF.

Unplug the Air Compressor.13.

Page 10 For technical questions, please call 1-800-444-3353. SKU 67696

68149

CAUTION: Do not leave the compressor

unattended for an extended period

while plugged in. Unplug the

compressor after working.

Close the in-line Shutoff Valve.14.

Bleed air from the tool then disconnect it.15.

Open the Drain Valve (107), at the16.

bottom of the Tank, to release any

built-up moisture and the internal tank

pressure. Close the valve after moisture

has drained out. Do not remove the

Drain Valve.

Clean, then store the Air Compressor17.

indoors.

Emergency Depressurization

If it is necessary to quickly depressurize

the Compressor, turn the Power Switch

(133) OFF. Then, pull on the ring on

the Safety Valve (110) to quickly release

stored air pressure.

Automatic Shut off System

If the Compressor automatically shuts1.

off:

Turn the Power Switch OFF.a.

Shut off all tools.b.

Wait until the Compressor cools downc.

(about 10 minutes).

Turn the Power Switch ON.d.

Resume operation.e.

Possible causes of repeated automatic2.

shut off of the compressor are:

Using an extension cord that is too longa.

or the wrong gauge (not thick enough);

An air leak or open hose causing theb.

compressor to cycle too often and build

up heat.

Correct any issues before further use to3.

avoid damage to the compressor.

MAINTENANCE AND

SERVICING

Procedures not specically

explained in this manual must

be performed only by a qualied

technician.

TO PREVENT

SERIOUS INJURY

FROM ACCIDENTAL

OPERATION:

Turn the Switch “OFF”, unplug

the Compressor from its

electrical outlet, and release all

air pressure from the air tank

before performing any

inspection, maintenance, or

cleaning procedures.

TO PREVENT SERIOUS INJURY

FROM COMPRESSOR FAILURE:

Do not use damaged equipment.

If abnormal noise or vibration

occurs, have the problem

corrected before further use.

Cleaning, Maintenance, and

Lubrication

BEFORE EACH USE,1. inspect the

general condition of the Air Compressor.

Check for loose hardware, misalignment

or binding of moving parts, cracked or

broken parts, damaged electrical wiring,

and any other condition that may affect

its safe operation.

AFTER USE,2. wipe external surfaces of

the compressor with a clean cloth.

3. WARNING! If the supply cord

of this compressor is damaged, it

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