Central Pneumatic 21 Manuel utilisateur

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Email our technical support at: [email protected]

GAL cast iron

vertical air

compressor

Owner’s Manual & Safety Instructions

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.

When unpacking, make sure that the product is intact

and undamaged. If any parts are missing or broken,

please call 1-888-866-5797 as soon as possible.

No portion of this manual or any artwork 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.

Read this material before using this product.

Failure to do so can result in serious injury.

SAVE THIS MANUAL.

REV 15a

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SAFETY SETUP OPERATION MAINTENANCE

Table of Contents

Safety ......................................................... 2

Setup .......................................................... 6

Specifications ............................................. 6

Operation................................................... 11

Maintenance.............................................. 14

Parts List and Diagram.............................. 18

Warranty .................................................... 20

WARNING SYMBOLS AND DEFINITIONS

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.

Indicates a hazardous situation which, if not avoided,

will result in death or serious injury.

Indicates a hazardous situation which, if not avoided,

could result in death or serious injury.

Indicates a hazardous situation which, if not avoided,

could result in minor or moderate injury.

Addresses practices not related to personal injury.

Page 3For technical questions, please call 1-888-866-5797.ITEM 61454

SAFETYSETUPOPERATIONMAINTENANCE

IMPORTANT SAFETY INFORMATION

General Safety Warnings

WARNING Read all safety warnings and instructions.

Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

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.

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 flammable 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 grounded

compressors. Standard plugs and matching

outlets will reduce risk of electric shock.

b. Do not expose 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 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 influence

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 ANSI-approved eye

protection during setup and use.

c. Prevent unintentional starting. Ensure the

switch is in the off-position before connecting

to power source or moving the compressor.

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

before making any adjustments, changing

accessories, or storing the compressor.

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. 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.

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.

5. Service

a. Have your compressor serviced by a

qualified repair person using only identical

replacement parts. This will ensure that the

safety of the compressor is maintained.

Page 4 For technical questions, please call 1-888-866-5797. ITEM 61454

SAFETY SETUP OPERATION MAINTENANCE

Air Compressor Safety Warnings

1. Risk of fire or explosion - do not spray

flammable liquid in a confined area or towards a

hot surface. Spray area must be well-ventilated.

Do not smoke while spraying or spray where

spark or flame 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 marked maximum pressure of attachment.

3. Risk of injury - do not direct air

stream at people or animals.

4. Do not use to supply breathing air.

5. Do not leave compressor unattended

for an extended period while plugged in.

Unplug compressor after working.

6. Keep compressor well-ventilated.

Do not cover compressor during use.

7. Drain Tank daily and after use. Internal rust causes

tank failure and explosion.

8. Add correct amount of compressor oil before first

use and every use. Operating with low or no oil

causes permanent damage and voids warranty.

9. Do not remove the valve cover or

adjust internal components.

10. Compressor head gets hot during operation.

Do not touch it or allow children nearby

during or immediately following operation.

11. Do not use the air hose to move the compressor.

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, filters, etc., must be rated for a minimum

working pressure of 150 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:

TABLE A: 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.

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 fill to marked level if needed.

20. People with pacemakers should consult their

physician(s) before use. Electromagnetic fields 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 cancer and birth defects

or other reproductive harm. (California Health

& Safety Code § 25249.5, et seq.)

22. WARNING: The cord of this product contains

lead and/or di (2-ethylhexyl) phthalate (DEHP),

chemicals known to the State of California

to cause cancer, and birth defects or other

reproductive harm. Wash hands after handling.

(California Health & Safety Code § 25249.5, et seq.)

SAVE THESE INSTRUCTIONS.

Page 5For technical questions, please call 1-888-866-5797.ITEM 61454

SAFETYSETUPOPERATIONMAINTENANCE

Grounding

TO PREVENT ELECTRIC SHOCK AND DEATH

FROM INCORRECT GROUNDING WIRE CONNECTION:

Check with a qualified 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 fit the outlet,

have a proper outlet installed by a qualified electrician.

110-120 VAC Grounded Compressors:

Compressors with Three Prong Plugs

1. In the event of a malfunction or 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.

2. Do not modify the plug provided –

if it will not fit the outlet, have the proper

outlet installed by a qualified 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 qualified 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.

125 VAC 3-Prong Plug and Outlet

(for up to 125 VAC and up to 15 A)

Grounding

7. This compressor is intended for use on a

circuit that has an outlet that looks like the one

illustrated above in 125 VAC 3-Prong Plug

and Outlet. The compressor has a grounding

plug that looks like the plug illustrated above

in 125 VAC 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

PSI Pounds per square inch of pressure

CFM Cubic Feet per Minute flow

SCFM Cubic Feet per Minute flow

at standard conditions

NPT National pipe thread, tapered

NPS National pipe thread, straight

Double Insulated

Canadian Standards Association

Underwriters Laboratories, Inc.

VAC Volts Alternating Current

AAmperes

Page 6 For technical questions, please call 1-888-866-5797. ITEM 61454

SAFETY SETUP OPERATION MAINTENANCE

Specifications

Electrical Rating 120VAC / 60Hz / 14A

(Dedicated circuit recommended)

Air Outlet Size 1/4″ -18 NPT

Air Pressure Shut-off 125 PSI

Restart 95 PSI

Air Tank Capacity 21 Gallons

Air Flow Capacity 4.7 CFM @ 90 PSI

5.8 CFM @ 40 PSI

Oil Capacity 5.6 oz.

Oil Type SAE 30W, non-detergent, Air Compressor Oil

(sold separately)

Sound Level 90 dB @ 3′

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.

Figure A: Functions

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)

Quick

Coupler (76)

- for attaching

in-line shutoff

valve, air

hose and tool

Drain

Valve (66)

OFF

ON/OFF

Power

Lever

Tank Pressure

Gauge (53)

Safety

Valve

(73)

Output Pressure

Gauge (77)

Pressure

Regulator

(74)

Quick

Coupler

(76)

Pressure

Switch (54)

Figure B: Controls

248648

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SAFETYSETUPOPERATIONMAINTENANCE

Assembly

Figure D Bolt (64)

Hex Nut (65)

Tank (70)

Wheel (63)

Screw (69)

Nut (24)

Foot Pad (67)

Washer (68)

Washer (64b)

Sleeve (64a)

Attach the Wheels (63) to the Tank (70),

using the Bolts (64), Washers (64b), Sleeves

(64a), and Hex Nuts (65). Attach the Foot

Pads (67) to the bottom of the Tank (70)

using the Screws (69) and Washers (68).

Figure E

Handle (72)

Bolts (71)

Tank (70)

Slide the Handle (72) into the two slots

on the top of the Tank (70) and secure

in place with four Bolts (71).

Figure F

Air Filter

(6)

Cylinder Head (7)

Thread the Air Filter (6) onto the

side of the Cylinder Head (7).

4. Break in the new Air Compressor as follows:

a. Turn the Power Switch off and unplug the unit.

Insert a male coupler (sold separately)

into the female Quick Coupler and fully

open all regulators and valves.

b. Plug in the Power Cord.

c. Turn the Power Switch ON.

d. Let the unit run for 30 minutes.

Air will expel freely through the Coupler.

e. Turn the Power Switch OFF.

f. Unplug the Power Cord and

remove the male coupler.

5. 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: 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.

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 filter, or a dryer (all sold separately),

as shown on Figure G on page 8 and

Figure H on page 9. Consult your air

tool’s manual for needed accessories.

Page 8 For technical questions, please call 1-888-866-5797. ITEM 61454

SAFETY SETUP OPERATION MAINTENANCE

Figure G: Portable Air Supply Setup

E H

Non-lubricated

Tools

Lubricated

Tools

Description Function

A Air Hose Connects air to tool

B Filter Prevents dirt and condensation from damaging tool or workpiece

C Regulator Adjusts air pressure to tool

D Lubricator (optional) For air tool lubrication

E Coupler and Plug Provides quick connection and release

F Leader Hose (optional) Increases coupler life

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

H Air Adjusting Valve (optional) For fine tuning airflow at tool

Page 9For technical questions, please call 1-888-866-5797.ITEM 61454

SAFETYSETUPOPERATIONMAINTENANCE

Figure H: Stationary Air Supply Setup

L O

Non-lubricated

Tools

Lubricated

Tools

JKH

Slope

B B

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

EMain Air Line - 3/4″ minimum recommended Distributes air to branch lines

F Ball Valve To drain moisture from system

GBranch Air Line -1/2″ minimum recommended Brings air to point of use

H Air Hose Connects air to tool

I Filter Prevents dirt and condensation from damaging tool or workpiece

J Regulator Adjusts air pressure to tool

K Lubricator (optional) For air tool lubrication

L Coupler and Plug Provides quick connection and release

M Leader Hose (optional) Increases coupler life

N Air Cleaner / Dryer (optional) Prevents water vapor from damaging workpiece

O Air Adjusting Valve (optional) For fine tuning airflow at tool

Page 10 For technical questions, please call 1-888-866-5797. ITEM 61454

SAFETY SETUP OPERATION MAINTENANCE

Checking the Oil

1. Check the oil level before operation. Fill the Pump

Crankcase (39) with SAE 30W, 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 overfilled or

low oil. Slowly fill to full line, wait 2 minutes

and fill back up to full line. Compressor

has small passages that will fill slowly.

Oil Sight Glass (33)Crankcase Cover (31)

Tank (70)

OVERFILL

LOW

FULL

OIL LEVEL

Figure I: Oil Sight Glass

The oil level should be at the center of the “full”

level on the oil level sight glass, as shown in

Figure I. 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 overfill 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 (37).

b. Using a funnel to avoid spills, pour enough

oil into the Pump Crankcase (39) to reach

the “full” level in the Oil Sight Glass (33).

c. Replace the Oil Plug.

Cold Weather Operation

Premium quality 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.

4. If uncertain which oil to use for this compressor,

please call Harbor Freight Tools customer

service at 1-888-866-5797 for assistance.

5. Change the compressor oil after the first

hour of use to remove any debris.

CAUTION! TO PREVENT INJURY FROM BURNS:

Do not add or change the oil while

the compressor is in operation.

Allow the compressor to cool before replacing oil.

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