Central Pneumatic 90168 Installation manual

OILLESS COMPRESSOR

90168

SET UP AND OPERATING INSTRUCTIONS

Distributed exclusively by Harbor Freight Tools®.

3491 Mission Oaks Blvd., Camarillo, CA 93011

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.

Manual revised 08h

SKU 90168 For technical questions, please call 1-800-444-3353. Page 2

SAVE THIS MANUAL

Keep this manual for the safety warn-

ings and precautions, assembly, operat-

ing, 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 provid-

ed 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

explosion, 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 acci-

dents.

Do not operate compressors inb.

explosive atmospheres, such as in

the presence of ammable liquids,

gases or dust. Compressors be-

come hot which may ignite the dust

or fumes.

Keep children and bystandersc.away while operating a compres-

sor. Distractions can cause you to

lose control.

Electrical safety2.

Compressor plugs must match thea.

outlet. Never modify the plug in

any way. Do not use any adapter

plugs with grounded compressors.

Unmodied plugs and matching out-

lets will reduce risk of electric shock.

Avoid body contact with groundedb.

surfaces such as pipes, radiators,

SKU 90168 For technical questions, please call 1-800-444-3353. Page 3

ranges and refrigerators. There is

an increased risk of electric shock if

your body is grounded.

Do not expose compressors toc.rain or wet conditions. Water enter-

ing a compressor will increase the

risk of electric shock.

Do not abuse the cord. Never used.

the cord for carrying, 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.

If operating a compressor in ae.

damp location is unavoidable, use

a Ground Fault Circuit Interrupter

(GFCI) protected supply. Use of

a GFCI reduces the risk of electric

shock.

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 14 12

10.1 – 12 16 16 14 12

12.1 – 16 14 12 Do not use.

TABLE A

USE PROPER EXTENSION CORD.f. Make sure your extension cord is

in good condition. When using an

extension cord, be sure to use one

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 over-

heating. Table A shows the correct

size to use depending on cord length

and nameplate ampere rating. If in

doubt, use the next heavier gage.

The smaller the gage number, the

heavier the cord.

Personal safety3.

Stay alert, watch what you are do-a.

ing 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

compressors may result in serious

personal injury.

Use personal protective equip-b.

ment. Always wear eye protection.

Safety equipment such as dust mask,

non-skid safety shoes, hard hat, or

hearing protection used for appropri-

ate conditions will reduce personal

injuries.

Prevent unintentional starting.c.Ensure the switch is in the off-po-

sition before connecting to power

source or moving the compressor.

Do not overreach. Keep properd.

footing and balance at all times.

This enables better control of the

compressor in unexpected situations.

Dress properly. Do not wear loosee.

clothing or jewelry. Keep your

hair, clothing and gloves away

from moving parts. Loose clothes,

jewelry or long hair can be caught in

moving parts.

Only use safety equipment thatf. has been approved by an appropri-

ate standards agency. Unapproved

safety equipment may not provide

adequate protection. Eye protection

must be ANSI-approved and breath-

ing protection must be NIOSH-ap-

SKU 90168 For technical questions, please call 1-800-444-3353. Page 4

proved for the specic hazards in the

work area.

Compressor use and care4.

Do not force the compressor. Usea.

the correct compressor for your

application. The correct compressor

will do the job better and safer at the

rate for which it was designed.

Do not use the compressor if theb.

switch does not turn it on and off.

Any compressor that cannot be con-

trolled with the switch is dangerous

and must be repaired.

Disconnect the plug from thec.power source of the compressor

before making any adjustments,

changing accessories, or stor-

ing compressors. Such preventive

safety measures reduce the risk of

starting the compressor accidentally.

Store idle compressors out of thed.

reach of children and do not allow

persons unfamiliar with the com-

pressor or these instructions to

operate it. Compressors are danger-

ous in the hands of untrained users.

Maintain compressors. Check fore.

misalignment or binding of moving

parts, breakage of parts and any

other condition that may affect the

compressor’s operation. If dam-

aged, have the compressor re-

paired before use. Many accidents

are caused by poorly maintained

compressors.

Use the compressor in accordancef. 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 serviceda.

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.



area or towards a hot surface. Spray

area must be well-ventilated. Do not

smoke while spraying or spray where



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 to result in output pressure

greater than marked maximum pres-

sure of attachment.

Risk of injury - do not direct air3. stream at body. To reduce the risk of

electric shock, do not expose to rain.

Store indoors.

Do not use to supply breathing air.4.

-5. pressor at people or animals.

Industrial applications must follow6. OSHA requirements.

Maintain labels and nameplates on7. the compressor. These carry impor-

tant safety information. If unreadable

or missing, contact Harbor Freight

Compressors for a replacement.

Avoid unintentional starting. Prepare8. to begin work before turning on the

compressor.

SKU 90168 For technical questions, please call 1-800-444-3353. Page 5

This product is not a toy. Keep it out9. of reach of children.

WARNING: The brass components10. of this product contain lead, a chemi-

cal known to the State of California

to cause birth defects (or other repro-

ductive harm). (California Health &

Safety code § 25249.5, et seq.)

People with pacemakers should11. consult their physician(s) before use.

-

imity to heart pacemaker could cause

pacemaker interference or pacemak-

er failure. In addition, people with

pacemakers should:





on.



avoid electrical shock.



grounded. Ground Fault Circuit Inter-

rupter (GFCI) should also be imple-

mented – it prevents sustained elec-

trical shock.

Some dust created by power sand-12. ing, sawing, grinding, drilling, and

other construction activities, contains

chemicals known [to the State of Cali-

fornia] to cause cancer, birth defects

or other reproductive harm. Some

examples of these chemicals are:



-

ment or other masonry products

-

cally treated lumber

Your risk from these exposures var-

ies, depending on how often you do

this type of work. To reduce your

exposure to these chemicals: work in

a well ventilated area, and work with

approved safety equipment, such as

those dust masks that are specially



particles. (California Health & Safety

Code § 25249.5, et seq.)

WARNING: Handling the cord on13. this product will expose you to lead,

a chemical known to the State of

California to cause cancer, and birth

defects or other reproductive harm.

Wash hands after handling. (Califor-

nia Health & Safety Code § 25249.5,

et seq.)

The warnings, precautions, and in-14. structions discussed in this instruction

manual cannot cover all possible con-

ditions 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.

SKU 90168 For technical questions, please call 1-800-444-3353. Page 6

GROUNDING INSTRUCTIONS

TO PREVENT

ELECTRIC SHOCK

AND DEATH FROM

INCORRECT GROUNDING

WIRE CONNECTION

READ AND FOLLOW THESE

INSTRUCTIONS:

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 it2.



-

cian.

Improper connection of the equip-3. ment-grounding conductor can re-

sult in a risk of electric shock. The

conductor with insulation having an

outer surface that is green with or

without yellow stripes is the equip-

ment-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.

4. service personnel if the grounding

instructions are not completely under-

stood, 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 worn6. cord immediately.

7. This compressor is intended for use

on 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 installed8. and grounded in accordance with all

codes and ordinances.

Do not use an adapter to connect this9. compressor to a different outlet.

SKU 90168 For technical questions, please call 1-800-444-3353. Page 7

Double Insulated Compressors:

Compressors with Two Prong

Plugs

To reduce the risk of electric shock,1. double insulated equipment has a po-

larized plug (one blade is wider than

-

ized outlet only one way. If the plug







proper outlet. Do not change the plug

in any way.

Double insulated compressors may2. be used in either of the 120 volt

outlets shown in the preceding illus-

tration. (See Outlets for 2-Prong

Plug.)

SPECIFICATIONS

Electrical

Requirements 120 V~ / 60 Hz / 210 W



6.25 A (Peak)

Three Prong Plug

Air Tank Capacity 3 Gallons

Pressure Range 70-100 PSI

Air Flow Capacity .5 CFM @ 90 PSI / .7 CFM

@ 40 PSI

Accessories 25’ Coil Air Hose / Air Chuck

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 the number shown on the

cover of this manual as soon as possible.

SKU 90168 For technical questions, please call 1-800-444-3353. Page 8

PRODUCT OVERVIEW

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 of the

compressor to its “OFF”

position and unplug the

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.

Prior to using the Air Compressor,

make sure to familiarize yourself with its

basic features and methods of operation

as described in this section:

Power Switch (19):1. The Power

Switch turns the Air Compressor ON

and OFF. When the Power Switch

is in its ON position it allows the Air

Compressor to automatically start up

or shut down depending on the level

of compressed air in the Air Com-

pressor’s Tank (14).

Safety Valve (3):2. If the Air Compres-

sor does not automatically shut down

when the air pressure reaches the

Air Line

Connection

Point

TOOL

PRESSURE

GAUGE

(2A)

TOOL

PRESSURE

REGULATOR

(6)

TANK

PRESSURE

GAUGE

(2)

SAFETY

VALVE

(3)

TANK

(14) POWER

SWITCH

(19)

DRAIN

(9)

SKU 90168 For technical questions, please call 1-800-444-3353. Page 9

factory preset level, the Safety Valve

will automatically pop open to prevent

over pressurization in the Tank (14).

To operate the Safety Valve manually,

pull the ring on the Safety Valve to

relieve air pressure in the Tank.

Tank Pressure Gauge (2):3. The Tank

Pressure Gauge measures the air

pressure stored in the Tank (14), and

is not adjustable by the operator.

Tool Pressure Gauge (2A):4. The Tool

Pressure Gauge measures the air

pressure being supplied to the tool

being used.

Tool Pressure Regulator (6):5. The

Tool Pressure Regulator allows you to

adjust the air pressure (0 to 120 PSI)

being supplied to the tool being used.

Turn the Tool Pressure Regulator

clockwise to increase the air pressure

to the tool, and counterclockwise to

decrease the air pressure.

SKU 90168 For technical questions, please call 1-800-444-3353. Page 10

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.

Close the Drain (9) completely.1.

Turn the Tool Pressure Regulator2. (6) counterclockwise until it is fully

closed.

Pull the ring on the Safety Valve (3)3. to check that it operates properly.

Attach the Air Hose (20) to the air4. outlet on the Regulator (6). Connect

the other end of the air hose to the air

inlet of the tool. Other components,

such as a connector and quick cou-

-

cient, but are not required.

Note: 

-



any object.

Plug the Power Cord/Plug (7) into the5. nearest 120 volt, grounded, electrical

outlet.

Turn the Power Switch (19) to its6. AUTO or

position.

Observe the Tank Pressure Gauge7. (2), and allow the air pressure in the

Tank (14) to build up to 70 PSI.

Observe the Tool Pressure Gauge8. (2A), while turning the Tool Pressure

Regulator clockwise to increase pres-

sure up to the desired level.

WARNING! Do not exceed the tool’s

maximum air pressure.

The Air Compressor is now ready9. to use. 

Compressor, turn the Power Switch

(19) to its OFF or Oposition. Then,

unplug the Air Compressor from its

electrical outlet.

Turn the Tool Pressure Regulator10. (6) counterclockwise until it is fully

closed.

Pull the ring on the Safety Valve (3)11. to relieve all remaining air pressure in

the Tank.

Activate the tool in a safe manner12. to release air pressure from the air

hose. Then, disconnect the air hose

from the tool, and store the compres-

sor in a safe, dry location.

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