Central Pneumatic 68021 Installation manual

2” 18 GAUGE

BRAD NAILER

Model

68021

SET UP AND OPERATING INSTRUCTIONS

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

Read and understand tool labels and

manual. Failure to follow warnings could

result in DEATH or 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 68021

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.

Safety Alert Symbol and Signal

Words

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.

Symbol Denitions

Symbol Property or statement

PSI Pounds per square inch of pressure

CFM Cubic Feet per Minute ow

SCFM Cubic Feet per Minute ow at standard

conditions

NPT National pipe thread, tapered

NPS National pipe thread, straight

WARNING marking concerning Risk of

Eye Injury. Wear ANSI-approved safety

goggles with side shields.

Warning marking concerning Risk of

Puncture Injury. Wear heavy-duty work

gloves.

Read the manual before set-up and/or

use.

WARNING marking concerning Risk of

Hearing Loss. Wear hearing protection.

WARNING marking concerning Risk

of Respiratory Injury. Wear NIOSH-

approved dust mask/respirator.

WARNING marking concerning Risk of

Explosion.

IMPORTANT SAFETY S

INSTRUCTIONS PERTAINING

TO A RISK OF FIRE, ELECTRIC

SHOCK, OR INJURY

TO PERSONS

Important Safety Instructions

Page 3For technical questions, please call 1‑800‑444‑3353.SKU 68021

WARNING – When using tools, basic

precautions should always be followed,

including the following:

General

a. To reduce the risks of electric shock,

re, and injury to persons, read all the

instructions before using the tool.

Work area

a. Keep the work area clean and well

lighted. Cluttered benches and dark

areas increase the risks of electric

shock, re, and injury to persons.

b. Do not operate the tool in explosive

atmospheres, such as in the presence

of ammable liquids, gases, or dust.

The tool is able to create sparks resulting

in the ignition of the dust or fumes.

c. Keep bystanders, children, and

visitors away while operating the tool.

Distractions are able to result in the loss

of control of the tool.

Personal safety

a. Stay alert. Watch what you are

doing and use common sense when

operating the tool. Do not use the

tool while tired or under the inuence

of drugs, alcohol, or medication. A

moment of inattention while operating

the tool increases the risk of injury to

persons.

b. Dress properly. Do not wear loose

clothing or jewelry. Contain long hair.

Keep hair, clothing, and gloves away

from moving parts. Loose clothes,

jewelry, or long hair increases the risk

of injury to persons as a result of being

caught in moving parts.

c. Avoid unintentional starting. Be

sure the trigger is released before

connecting to the air supply. Do not

carry the tool with your nger on the

trigger or connect the tool to the air

supply with the trigger pressed.

d. Do not overreach. Keep proper

footing and balance at all times.

Proper footing and balance enables

better control of the tool in unexpected

situations.

e. Use safety equipment. A

dust mask, non-skid safety

shoes and a hard hat must be

used for the applicable

conditions. Wear heavy-duty work

gloves during use.

f. Always wear eye protection.

Wear ANSI-approved safety

goggles with side shields.

g. Always wear hearing

protection when using the

tool. Prolonged exposure to

high intensity noise is able to

cause hearing loss.

h. Do not attach the hose or tool to your

body. Attach the hose to the structure to

reduce the risk of loss of balance if the

hose shifts.

i. Always assume that the tool contains

fasteners. Do not point the tool toward

yourself or anyone whether it contains

fasteners or not.

j. WARNING – Do not re fastener on

top of another fastener. This is able to

cause the fastener to be deected and

hit someone, or cause the tool to react

and result in a risk of injury to persons.

k. WARNING – Remove nger from the

trigger when not driving fasteners.

Page 4 For technical questions, please call 1‑800‑444‑3353. SKU 68021

Never carry the tool with nger on

trigger, the tool is able to re a fastener.

Tool use and care

a. Use clamps or another practical way

to secure and support the workpiece

to a stable platform. Holding the work

by hand or against the body is unstable

and can lead to loss of control.

b. Do not force the tool. Use the correct

tool for the application. The correct tool

will do the job better and safer at the rate

for which the tool is designed.

c. Do not use the tool if the trigger does

not turn the tool on or off. Any tool that

cannot be controlled with the trigger is

dangerous and must not be used until

repaired.

d. Disconnect the tool from the air

source before making adjustments,

doing tool maintenance, clearing

jams, touching the safety nosepiece,

leaving work area, loading, or

unloading the tool. Such precautionary

measures reduce the risk of injury to

persons.

e. Store the tool when it is idle out of

reach of children and other untrained

persons. A tool is dangerous in the

hands of untrained users.

f. Maintain the tool with care. A properly

maintained tool reduces the risk of

binding and is easier to control.

g. Check for misalignment or binding

of moving parts, breakage of parts,

and any other condition that affects

the tool’s operation. If damaged,

have the tool serviced before using.

Many accidents are caused by poorly

maintained tools. There is a risk of

bursting if the tool is damaged.

h. Use only accessories that are

identied by the manufacturer for

the specic tool model. Use of an

accessory not intended for use with the

specic tool model, increases the risk of

injury to persons.

i. Use only those fasteners listed in the

Specications chart of this manual.

Fasteners not identied for use with this

tool by the tool manufacturer are able to

result in a risk of injury to persons or tool

damage when used in this tool.

Service

a. Tool service must be performed only

by qualied repair personnel.

b. When servicing a tool, use only

identical replacement parts. Use only

authorized parts.

c. Use only the lubricants supplied

with the tool or specied by the

manufacturer.

Air source

a. Never connect to an air

source that is capable of

exceeding 200 PSI. Over

pressurizing the tool may

cause bursting, abnormal operation,

breakage of the tool or serious injury to

persons. Use only clean, dry, regulated

compressed air at the rated pressure or

within the rated pressure range as

marked on the tool. Always verify prior to

using the tool that the air source has

been adjusted to the rated air pressure

or within the rated air-pressure range.

b. Never use oxygen, carbon dioxide,

combustible gases or any bottled gas

as an air source for the tool. Such

gases are capable of explosion and

serious injury to persons.

Page 5For technical questions, please call 1‑800‑444‑3353.SKU 68021

SAVE THESE

INSTRUCTIONS.

SPECIFIC SAFETY S

1. Operators and others in work area

MUST wear ANSI‑approved safety

goggles with side shields during use.

The employer is responsible to enforce

the use of eye protection by the operator

and others in the work area.

2. Keep ngers away from trigger

when not driving fasteners to avoid

accidental ring.

3. Choice of triggering method is

important. Check manual for

triggering options.

4. Always assume tool contains fasteners.

5. Do not point toward yourself or anyone

whether it contains fasteners or not.

6. Do not actuate the tool unless the tool is

placed rmly against the workpiece.

7. Respect the tool as a working implement.

8. No horseplay. This tool is not a toy and

can be deadly if misused.

9. Do not load tool with fasteners when any

one of operating controls, such as the

Trigger or Safety Nosepiece, is activated.

10. Do not remove, tamper with, or otherwise

cause the tool operating controls to

become inoperable.

11. Do not operate if any portion of operating

controls is inoperable, disconnected,

altered, or not working properly.

12. Disconnect tool from air supply when:

a. Unattended.

b. Performing any maintenance or repair.

c. Clearing a jam.

d. Moving the tool to a new location.

13. Do not make any modications to tool.

14. Refer to the tool maintenance

instructions for detailed information on

the proper maintenance of the tool.

15. Fire fasteners into an appropriate

work surface only. Do not attempt to

re fasteners into surfaces too hard to

penetrate. Do not drive fasteners on top

of other fasteners, or at too steep of an

angle. Fasteners can ricochet causing

personal injury.

16. Do not re fasteners too close to edge of

a workpiece. They may split workpiece

and y free, causing personal injury.

17. Keep clear of the workpiece near area

being fastened. Fasteners may bend

sideways during ring, causing them

to exit the workpiece at an unexpected

point, causing personal injury.

18. Transport Tool safely. Always disconnect

air supply when moving the tool. Carry

the tool by the handle and avoid contact

with the trigger.

19. Hold tool away from head and body.

During operation the Tool may kick back

causing injury.

20. Do not re fasteners into a workpiece

that has people, utility lines, or other

objects behind or inside it.

21. Keep balance while using this tool.

Keep area below clear if working in

an elevated location, and secure air

hose to prevent falls from bystanders

accidentally pulling on it.

22. Obey the manual for the air compressor

used to power this tool.

Specic Safety Instructions

Page 6 For technical questions, please call 1‑800‑444‑3353. SKU 68021

23. Install in-line shutoff valve to allow

immediate control over air supply in an

emergency, even if a hose is ruptured.

24. Do not engrave or stamp anything into

the housing to avoid weakening it.

25. WARNING: Some dust created by

power sanding, sawing, grinding,

drilling, and other construction activities,

contains chemicals known [to the State

of California] to cause cancer, birth

defects or other reproductive harm.

Some examples of these chemicals are:

• Lead from lead-based paints

• Crystalline silica from bricks and

cement or other masonry products

• Arsenic and chromium from chemically

treated lumber

Your risk from these exposures varies,

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 designed to lter out

microscopic particles. (California Health

& Safety Code § 25249.5, et seq.)

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.)

26. The warnings and precautions discussed

in this manual cannot cover all possible

conditions and situations that may occur.

It must be understood by operator that

common sense and caution are factors

which cannot be built into this product,

but must be supplied by operator.

Vibration Precautions

This tool vibrates during use. Repeated

or long-term exposure to vibration may cause

temporary or permanent physical injury,

particularly to the hands, arms and shoulders.

To reduce the risk of vibration-related injury:

1. Anyone using vibrating tools regularly

or for an extended period should rst

be examined by a doctor and then have

regular medical check-ups to ensure

medical problems are not being caused

or worsened from use. Pregnant

women or people who have impaired

blood circulation to the hand, past hand

injuries, nervous system disorders,

diabetes, or Raynaud’s Disease

should not use this tool. If you feel any

symptoms related to vibration (such as

tingling, numbness, and white or blue

ngers), seek medical advice as soon as

possible.

2. Do not smoke during use. Nicotine

reduces the blood supply to the hands

and ngers, increasing the risk of

vibration-related injury.

3. Wear suitable gloves to reduce the

vibration effects on the user.

4. Use tools with the lowest vibration when

there is a choice between different

processes.

5. Include vibration-free periods each day

of work.

6. Grip tool as lightly as possible (while still

keeping safe control of it). Let the tool

do the work.

7. To reduce vibration, maintain tool as

explained in this manual. If abnormal

vibration occurs, stop immediately.

SAVE THESE

INSTRUCTIONS.

Page 7For technical questions, please call 1‑800‑444‑3353.SKU 68021

FUNCTIONAL DESCRIPTION

Specications

Operating Air

Pressure 70-120 PSI

Max. Air Pressure 120 PSI

Air Consumption .5 CFM @ 90 PSI

Air Inlet 1/4” -18 NPT

Fastener Capacity 3/8” to 2” 18 Gauge Brad Nails

Magazine Capacity 100 Fasteners

Safety Full Sequential Trip Safety

Components and Controls

Safety Nosepiece - Also called the workpiece

contact, the Safety Nosepiece helps

prevent the tool from ring unless it is

pressed against an object.

INITIAL TOOL SET UP/

ASSEMBLY

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.

Note: For additional information regarding the

parts listed in the following pages, refer

to the Assembly Diagram near the end of

this manual.

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.

• This air tool may be shipped with a

protective plug covering the air inlet.

Remove this plug before set up.

Air Supply

TO PREVENT

EXPLOSION:

Use only clean, dry, regulated,

compressed air to power this

tool. Do not use oxygen, carbon

dioxide, combustible gases, or

any other bottled gas as a power

source for this tool.

1. Connect a regulator valve, an in-line shut

off valve and 1/4” NPT air hose (all sold

separately) to the Quick Coupler. Use

thread tape for all threaded connections.

The air hose must be long enough to

reach the work area with enough extra

length to allow free movement while

working. 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. See pages 8

and 9 for Air Tool Setup procedures.

Note: If an automatic oiler system is not

used, add a few drops of Pneumatic

Tool Oil into the airline connection before

operation. Add a few more drops after

each hour of continual use.

Safety (26)

Air Deector

(3) Air Inlet

Plug (63)

Trigger

(36) Latch

(58)

Functional Description

Page 8 For technical questions, please call 1‑800‑444‑3353. SKU 68021

Description Function

A Air Hose Connects air to tool

B Filter Prevents dirt and condensation from damaging tool or work piece

C Regulator Adjusts air pressure to tool

D Lubricator (optional) For air tool lubrication

E Coupler and Plug Provides each connections

F Leader Hose (optional) Increases coupler life

G Air Cleaner / Dryer (optional) Prevents water vapor from damaging work piece

H Air Adjusting Valve (optional) For ne tuning airow at tool

E H

Non-lubricated

Tools

Lubricated

Tools

Air Tool & Spray Gun Portable Setup

Page 9For technical questions, please call 1‑800‑444‑3353.SKU 68021

Air Tool & Spray Gun Stationary Setup

Description Function

A Vibration Pads For noise and vibration reduction

B Anchor Bolts Secures air compressor in place

C Ball Valve Isolates sections of system for maintenance

D Isolation Hose For vibration reduction

E Main Air Line - 3/4” minimum recommended Distributes air to branch lines

F Ball Valve To drain moisture from system

G Branch Air Line -1/2” minimum recommended Brings air to point of use

H Filter Prevents dirt and condensation from damaging tool or work piece

I Air Cleaner / Dryer (optional) Prevents water vapor from damaging work piece

J Regulator Adjusts air pressure to tool

K Lubricator For air tool lubrication

L Air Hose Connects air to tool

M Coupler and Plug Provides each connections

NAir Adjusting Valve For ne tuning airow at tool

O Leader Hose Increases coupler life

M N

Non-lubricated

Tools

Lubricated

Tools

JKL

Slope

B B

A A

Page 10 For technical questions, please call 1‑800‑444‑3353. SKU 68021

2. Attach an air hose to the compressor’s

air outlet. Connect the air hose to the air

inlet of the tool. Other components, such

as a coupler plug and quick coupler, will

make operation more efcient, but are

not required.

WARNING! TO PREVENT SERIOUS

INJURY FROM ACCIDENTAL

OPERATION:

Do not install a quick coupler on the

tool. A coupler contains an air valve that

will allow the air tool to retain pressure

and operate accidentally after the air

supply is disconnected.

Note: Air ow, and therefore tool

performance, can be hindered by

undersized air supply components.

3. The air hose must be long enough to

reach the work area with enough extra

length to allow free movement while

working.

4. Release the Trigger.

5. Close the in-line safety valve between

the compressor and the tool.

6. Turn on the air compressor according to

the manufacturer’s directions and allow it

to build up pressure until it cycles off.

7. Adjust the air compressor’s output

regulator 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. Adjust the

pressure gradually, while checking the

air output gauge to set the right pressure

range.

8. The air pressure setting must not exceed

job site regulations/restrictions. The air

pressure setting must not exceed 120

PSI when being used with work pieces

that have a thickness of less than 1-3/4”.

9. Inspect the air connections for leaks.

Repair any leaks found.

10. If the tool will not be used at this time,

turn off and detach the air supply, safely

discharge any residual air pressure, and

release the trigger to prevent accidental

operation.

Note: Residual air pressure should not be

present after the tool is disconnected

from the air supply. However, it is a

good safety measure to attempt to

discharge the tool in a safe fashion after

disconnecting to ensure that the tool is

disconnected and unpowered.

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