Central Pneumatic CentralPneumatic 68064 Installationshandbuch

2 HP, 4 GALLON, 125 PSI

TWIN TANK AIR COMPRESSOR

Model

68064

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 68064

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.........................................9

SET UP ...............................................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 ...........15

TROUBLESHOOTING......................16

PARTS LIST................................. 18

ASSEMBLY DIAGRAM................ 19

LIMITED 1 YEAR / 90 DAY

WARRANTY .............................. 20

Page 3For technical questions, please call 1-800-444-3353.SKU 68064

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 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.

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

Page 4 For technical questions, please call 1-800-444-3353. SKU 68064

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.

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 ANSI-approved

and breathing protection must be

NIOSH-approved for the specic

hazards in the work area.

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 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.

Page 5For technical questions, please call 1-800-444-3353.SKU 68064

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.

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 the incorrect

amount of oil causes permanent

damage and voids warranty. To

prevent damage, do not use with

overlled or low oil. Slowly ll to

full line, wait 2 minutes and ll

back up to full line. Compressor

has small passages that will ll

slowly.

10. Do not remove the Pressure Switch

(63) cover or adjust the internal

components.

11. Compressor head gets hot during

operation. Do not touch it or allow

children nearby during or immediately

following operation.

12. Release the pressure in the storage

tank before moving.

13. The use of accessories or

attachments not recommended by

the manufacturer may result in a risk

of injury to persons.

14. All air line components, including

hoses, pipe, connectors, lters, etc.,

must be rated for a minimum working

pressure of 125 PSI, or 150% of

the maximum system pressure,

whichever is greater.

15. 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)

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

Page 6 For technical questions, please call 1-800-444-3353. SKU 68064

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.

16. Industrial applications must follow

OSHA guidelines.

17. Maintain labels and nameplates

on the compressor. These carry

important safety information. If

unreadable or missing, contact

Harbor Freight Tools for a

replacement.

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

of reach of children.

19. Operate unit on level surface. Check

oil level daily and ll to marked level if

needed.

20. 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.

21. 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.)

22. 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.

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

Page 7For technical questions, please call 1-800-444-3353.SKU 68064

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.

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

repair or replacement of the electric

cord or plug is necessary, do not

connect the equipment-grounding

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.

120 V~ 3-Prong Plug and Outlet

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

Grounding

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

Canadian Standards Association

V~ Volts Alternating Current

AAmperes

n0xxxx/min. No Load Revolutions per Minute

(RPM)

Page 8 For technical questions, please call 1-800-444-3353. SKU 68064

SPECIFICATIONS

Electrical

Requirements 120 V~ / 60 Hz / 2 HP

Amperage 14A

Motor Speed 3450 RPM

Phase Single

Air Outlet Size 1/4”-18 NPT

Air Pressure Auto Shut-Off @ 125 PSI

Restart @ 95 PSI

Measured Air Tank

Capacity 4 Gallons

Stated Air Flow

Capacity

3.7 SCFM @ 90 PSI

5 SCFM @ 40 PSI

Oil Capacity 5.6 oz. (165ml)

Oil Type

SAE 30W non-detergent

Air Compressor Oil

(Sold separately)

(SKU 95048)

Decibel Level 90 dB @ 1m

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 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.

Functions

Figure 1

Oil Sight

Glass

(35)

Pressure

Regulator

(85)

Tank Pressure

Gauge (83)

Output Pressure

Gauge (86)

Quick Coupler (84) -

For attaching in-line

shutoff valve, air

hose and tool

Drain Valve (71),

under bottom Tank

Tank Pressure

Gauge (83)

Output Pressure

Gauge (86)

Pressure

Regulator (85)

Quick Coupler

(84)

Control Panel

OFF

ON/OFF

Power Lever Safety

Valve

(64)

Controls on side of unit

Page 9For technical questions, please call 1-800-444-3353.SKU 68064

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.

Assembly

Figure 2

Bolt (74)

Washer (75)

Wheel (73)

Tank (59)

Bushing (76)

Frame

Nut (77)

To attach the Wheels (73) to the

frame:

a. Slide the Washer (75), Wheel (73)

and Bushing (76) onto the Bolt (74).

b. Slide the Bolt through the frame hole

and secure in place with the Nut

(77).

c. Repeat steps 2 and 3 for the other

Wheel.

Set Up

1. Break in the new Air Compressor as

follows:

a. Check the oil level before operation.

Fill the Pump Crankcase (41) with

approximately 5.6 oz. of premium

quality SAE 30-weight, non-

detergent air compressor oil.

b. Make sure the Power Lever is OFF

and the unit is unplugged. Insert a

male coupler (sold separately) into

the Female Quick Coupler (84) and

fully open all regulators and valves.

c. Plug in the Power Cord.

d. Turn the Power Lever ON.

e. Let the unit run for 30 minutes. Air

will expel freely through the Coupler.

f. Turn the Power Lever OFF.

g. Unplug the Power Cord and remove

the male coupler.

Page 10 For technical questions, please call 1-800-444-3353. SKU 68064

Quick

Coupler

Sample Air Line Setup

Regulator with

Pressure Gauge

Quick

Coupler Air Hose

on Reel

Shut

Off

Valve

FilterOiler

Coupler

Plug

Tool

Air

Compressor

Coupler

Plug

Connect a regulator valve, an in-line

shut off valve and a 1/4” NPT air hose

(all sold separately) to the Quick

Coupler (84). The air hose must be

long enough to reach the work area

with enough extra length to allow free

movement while working.

Note: An in-line shutoff ball valve is an

important safety device because it

controls the air supply even if the

air hose is ruptured. The shutoff

valve should be a ball valve

because it can be closed quickly.

3. Depending on the tool which you will

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.

Checking the Oil

1. Check the oil level before operation.

Fill the Pump Crankcase (41) with

approximately 5.6 oz. of premium

quality SAE 30-weight, non-detergent

air compressor oil.

IMPORTANT: Running the Air

Compressor with the incorrect

amount of oil will cause damage

to the equipment and void the

warranty. To prevent damage,

do not use with overlled or low

oil. Slowly ll to full line, wait 2

minutes and ll back up to full line.

Compressor has small passages

that will ll slowly.

Oil Sight Glass (35)Crankcase Cover (33)

Wheel (73)

Figure 3

OVERFILL

LOW

FULL

OIL LEVEL

The oil level should be at the center

of the “full” level on the oil level sight

glass, as shown in Figure 3. Add

oil as needed to maintain this level.

Do not let the oil level go below the

center dot (LOW as shown above)

and do not overll the oil so that it is

above the center dot (OVERFILL as

shown above) on the sight glass.

3. To add oil:

a. Remove the Oil Plug (39).

b. Using a funnel to avoid spills, pour

enough oil into the Pump Crankcase

(41) to reach the “full” level in the Oil

Sight Glass (35).

c. Replace the Oil Plug.

Cold Weather Operation

Premium quality 30-weight, non-

detergent air compressor oil (sold

separately) is recommended for

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