Central Pneumatic 67708 Installationshandbuch

2-1/2 HP 10 GALLON

125 PSI AIR COMPRESSOR

Model

67708

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.

Manual Revised 10e

Page 2 For technical questions, please call 1-800-444-3353. SKU 67708

CONTENTS

IMPORTANT SAFETY

INFORMATION .................................3

GENERAL COMPRESSOR SAFETY

WARNINGS........................................... 3

AIR COMPRESSOR SAFETY

WARNINGS........................................... 4

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

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

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

GENERAL OPERATING

INSTRUCTIONS ............................. 11

COMPRESSOR AREA SET UP .............11

GENERAL OPERATION ........................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......................................18

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

LIMITED 1 YEAR / 90 DAY

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

Page 3For technical questions, please call 1-800-444-3353.SKU 67708

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.

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

Page 4 For technical questions, please call 1-800-444-3353. SKU 67708

compressor. Keep cord away from

heat, oil, sharp edges or moving

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 switch 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.

switch does not turn it on and

off. Any compressor that cannot be

controlled with the 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 5For technical questions, please call 1-800-444-3353.SKU 67708

Do not leave compressor unattended5.

for an extended period while plugged

in. Unplug 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.

Add correct amount of compressor8.

oil before rst use and every use.

Operating with low or no oil causes

permanent damage and voids warranty.

Do not remove the valve cover or adjust9.

internal components.

Compressor head gets hot during10.

operation. Do not touch it or allow

children nearby during or immediately

following operation.

Do not use the air hose to move the11.

compressor.

Release the pressure in the storage tank12.

before moving.

The use of accessories or attachments13.

not recommended by the manufacturer

may result in a risk of injury to persons.

All air line components, including hoses,14.

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 NOT15.

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.

Be sure to use an extension cordb.

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.

Industrial applications must follow OSHA16.

guidelines.

Maintain labels and nameplates on the17.

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 of18.

reach of children.

Operate unit on level surface. Check19.

oil level daily and ll to marked level if

needed.

Page 6 For technical questions, please call 1-800-444-3353. SKU 67708

People with pacemakers should20.

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 of21.

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.)

The warnings, precautions, and22.

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 7For technical questions, please call 1-800-444-3353.SKU 67708

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

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

Double Insulated

Canadian Standards Association

Underwriters Laboratories, Inc.

V~ Volts Alternating Current

AAmperes

Page 8 For technical questions, please call 1-800-444-3353. SKU 67708

SPECIFICATIONS

Electrical

Requirements 120 V~ / 60 Hz / 2.5 HP

Amperage 14A (Dedicated circuit

recommended)

Air Outlet Size 1/4” -18 NPT

Air Pressure Auto Shut-Off @ 125 PSI

Restart @ 95 PSI

Air Tank Capacity 10 Gallons

Air Flow Capacity 5.3 SCFM @ 90 PSI

6.2 SCFM @ 40 PSI

Oil Capacity 5.5 oz.

Oil Type

Air Compressor Oil

(Sold separately)

(SKU 95048)

Sound Level 89 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 Switch “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

ON/OFF

Power

Lever

(On

Pressure

Switch (54))

Oil Sight

Glass

(33)

Pressure

Regulator

(74)

Safety

Valve (73)

Tank Pressure

Gauge (53)

Output

Pressure

Gauge

(77)

Coupler

for

attaching

in-line

shutoff

valve, air

hose and

tool

Drain Valve (66)

OFF

ON/OFF

Power

Lever

Tank Pressure

Gauge (53)

Output

Pressure

Gauge

(77)

Pressure

Regulator

(74)

Pressure

Switch

(54)

(Top View)

Page 9For technical questions, please call 1-800-444-3353.SKU 67708

Assembly/Mounting

Figure 2

Bolt (64)

Hex

Nuts

(65)

Handle (72)

Bolts (71)

Tank (70)

Wheel (63)

1. Attach the Wheels to the Tank, using the

Bolts and Hex Nuts.

Slide the Handle into the two slots on the2.

top of the Tank and secure in place with

four Bolts.

Figure 3

Air Filter

(6)

Cylinder Head (7)

3. Thread the Air Filter onto the side of the

Cylinder Head.

Break in the new Air Compressor as4.

follows:

Make sure the Power Switch is OFFa.

and the 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.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.

Connect a regulator valve, an inline shut5.

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: 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.

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

6. 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).

Page 10 For technical questions, please call 1-800-444-3353. SKU 67708

Consult your air tool’s manual for needed

accessories.

Checking the Oil

Check the oil level before operation.1.

Fill the Pump Crankcase with premium

quality SAE 30-weight, non-detergent, air

compressor oil (sold separately).

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 (33)

Crankcase Cover (31)

Tank (70)

OVERFILL

LOW

FULL

OIL LEVEL

Figure 5

2. The oil level should be at the center of

the “full” level on the oil level sight glass,

as shown in Figure 2. 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.

To add oil:3.

Remove the Oil Plug.a.

Using a funnel to avoid spills, pourb.

enough oil into the Pump Crankcase

to reach the “full” level in the Oil Sight

Glass.

Replace the Oil Plug.c.

Cold Weather Operation

Premium quality SAE 30-weight, non-

detergent, air compressor oil (sold

separately) is recommended for use

with this compressor. Start compressor

in heated area if outdoor temperatures

drop below 32° F. If this is not practical,

drain out the old pump oil and use SAE

10W Non-detergent Air Compressor Oil

in the pump crankcase instead whenever

the compressor’s temperature will fall

below 40°. Do not use multi-viscosity

oil (such as 10W-30), they leave carbon

deposits on pump components and lead

to accelerated failure. Heavy operation

may require heavier viscosity oil.

If uncertain which oil to use for this4.

compressor, please call Harbor Freight

Tools customer service at 1-800-444-

3353 for assistance.

Change the compressor oil after the5.

rst hour of use to remove any debris.

WARNING! To prevent serious injury from

burns: Do not add or change the oil while

the compressor is in operation. Allow the

compressor to cool before replacing oil.

REV 10e

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