Central Pneumatic 40400 Manuel utilisateur

AIR COMPRESSOR

2 HP - 8 GALLON

ASSEMBLY & OPERATING INSTRUCTIONS

REV 01h, 09c

40400

Diagrams within this manual may not be drawn proportionally.

Due to continuing improvements, actual product may differ slightly from the product described herein.

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.

or any artwork contained herein may be reproduced in any shape or form without the

express written consent of Harbor Freight Tools.

For technical questions or replacement parts, please call 1-800-444-3353.

SKU 40400 For technical questions, please call 1-800-444-3353. Page 2

SAVE THIS MANUAL

You will need this manual for the safety warnings and precautions, assembly, operating, inspection,

maintenance and cleaning procedures, parts list and assembly diagram. Keep your invoice with this manual.

Write the invoice number on the inside of the front cover. Keep this manual and invoice in a safe and dry place

for future reference.

GENERAL SAFETY WARNINGS AND PRECAUTIONS

Motor Single Phase, 120 V~, 60 Hz, 15.5 A, 3,360 RPM

Air Tank 8 Gallon

Pump Type Single Stage

Max. Working Pressure 115 PSI

Air Flow 6 SCFM at 40 PSI, 5 SCFM at 90 PSI,

4.2 SCFM at 115 PSI

Press Switch 70 PSI

Materials Cast Iron Piston and Connecting Rod

Cast Aluminum Crankcase

Piston Diameter 1.886”

Cylinder Honing 45° Crosshatch

Overall Dimensions 26” x 11-3/4” x 27”

Outlet Fittings 1/4” – 18 NPT

REV 01j; 03h; 09c

1. KEEP WORK AREA CLEAN AND DRY. Clut-

tered, damp, or wet work areas invite injuries.

2. KEEP CHILDREN AWAY FROMWORK AREA.

Do not allow children to handle this product.

3. STORE IDLE EQUIPMENT. When not in use,

tools and equipment should be stored in a dry

location to inhibit rust. Always lock up tools and

equipment, and keep out of reach of children.

4. DO NOT USE THIS PRODUCT IF UNDER

THE INFLUENCE OF ALCOHOL OR DRUGS.

Read warning labels on prescriptions to deter-

mine if your judgement or reﬂexes are impaired

while taking drugs. If there is any doubt, do not

attempt to use this product.

5. USE EYE AND HAND PROTECTION. Wear

ANSI-approved safety impact goggles and

heavy-duty work gloves when using this prod-

uct.

6. DRESS SAFELY. Do not wear loose cloth-

ing or jewelry, as they can become caught in

moving parts. Wear a protective hair covering

to prevent long hair from becoming caught in

moving parts. If wearing a long-sleeve shirt,

roll sleeves up above elbows.

7. DO NOT OVERREACH. Keep proper footing

and balance at all times to prevent tripping,

falling, back injury, etcetera.

8. INDUSTRIAL APPLICATIONS MUST FOL-

LOW OSHA REQUIREMENTS.

9. STAY ALERT. Watch what you are doing at all

times. Use common sense. Do not use this

product when you are tired or distracted from

the job at hand.

10. CHECK FOR DAMAGED PARTS. Before

using this product, carefully check that it will

operate properly and perform its intended func-

tion. Check for damaged parts and any other

conditions that may affect the operation of this

product. Replace or repair damaged or worn

parts immediately.

11. REPLACEMENT PARTS AND ACCES-

SORIES: When servicing, use only identical

replacement parts. Only use accessories

intended for use with this product. Approved

accessories are available from Harbor Freight

Tools.

12. MAINTAIN THIS PRODUCT WITH CARE.

Keep this product clean and dry for better and

safer performance.

SPECIFICATIONS

SKU 40400 For technical questions, please call 1-800-444-3353. Page 3

13. MAINTENANCE: For your safety, service and

maintenance should be performed regularly by

a qualiﬁed technician.

14. USE THE RIGHT TOOL FOR THE JOB. Do

not attempt to force a small tool or attachment

to do the work of a larger industrial tool. There

are certain applications for which this tool was

designed. It will do the job better and more

safely at the rate for which it was intended. Do

not modify this tool, and do not use this tool for

a purpose for which it was not intended.

15. WARNING: Make sure to fill the Air Com-

pressor with a premium quality, 30-weight,

non-detergent oil before each use. Running

the Air Compressor with no oil or low oil will

cause damage to the equipment. Note: The oil

reservoir has an optimal capacity of 30 ounces

of oil.

16. WHEN CHECKING THE OIL LEVEL: Make

sure to unscrew (do not pull) the Dip Stick

out.

17. MAKE SURE ALLTOOLS AND EQUIPMENT

USED WITH THE AIR COMPRESSOR ARE

RATED TO THE APPROPRIATE CAPACITY.

Do not use any tool or equipment that does not

operate at the regulator setting being used.

18. DRAIN AIR COMPRESSOR EVERY DAY. Do

not allow moisture to build up inside the Air

Compressor.

(See “INSPECTION, MAINTENANCE, AND

CLEANING” section of this manual.)

19. MAINTAIN A SAFE WORKING ENVIRON-

MENT. Keep the work area well lit. Make sure

there is adequate surrounding workspace. Do

not use the Air Compressor in areas near ﬂam-

mable chemicals, dusts, and vapors.

20. AVOID INJURY: Never direct the air stream at

people or animals.

21. DO NOT ALTER OR REMOVETHE FACTORY

SEALED PRESSURE RELEASE VALVE.

22. TO REDUCETHE RISK OF FIRE OR EXPLO-

SION, NEVER SPRAY FLAMMABLE LIQUIDS

IN A CONFINED AREA. Do not smoke while

spraying. Do not spray where sparks or ﬂames

are present. Keep compressor as far from

spray area as possible.

22. DO NOT OPEN THE WATER DRAIN VALVE

SOTHAT MORETHAN FOURTHREADS ARE

SHOWING.

23. AN EXTENSION CORD MUST NEVER BE

USED WITH THIS ITEM. Connecting this

item to an outlet through an extension

cord MAY CAUSE ELECTRICAL DAMAGE

TO THE MOTOR and could present a FIRE

HAZARD.

24. THIS COMPRESSOR MAY REQUIRE A

DEDICATED ELECTRICAL CIRCUIT ASTHE

AMPERAGE DRAW UNDER FULL LOAD

COMBINEDWITH USE OF ANY OTHER ITEM

MAY OVERLOAD YOUR CIRCUIT.

25. The brass components of this product contain

lead, a chemical known to the State of Califor-

nia to cause birth defects (or other reproductive

harm). (California Health & Safety code §

25249.5, et seq.)

26. WARNING: People with pacemakers should

consult their physician(s) before using this

product. Operation of electrical equipment in

close proximity to a heart pacemaker could

cause interference to or failure of the pace-

maker.

27. Never weld on the air tank of this Compres-

sor. Welding of the tank could affect tank

strength and result in an extremely hazardous

condition.

28. To decrease the potential for electric shock,

never use this Compressor outdoors when

it is raining, and never use the Compressor

on a wet surface.

29. Not suitable for breathing air supply purpos-

es.

30. WARNING: The warnings, precautions, and

instructions discussed in this manual cannot

cover all possible conditions and situations that

may occur. The operator must understand that

common sense and caution are factors, which

cannot be built into this product, but must be

supplied by the operator.

SKU 40400 For technical questions, please call 1-800-444-3353. Page 4

Unpacking

When unpacking, check to make sure all parts are included. Refer to the Assembly Drawing and Parts

List at the end of this manual. If any parts are missing or broken, please call Harbor Freight Tools at the number

on the cover of this manual as soon as possible.

Note: There is a square black plastic shipping insert that is placed between the Shroud and the Cylinder

Head. You must remove it before turning on the compressor. See Assembly Diagram page 8.

Assembly

The Wheels need to be assembled to the Air Compressor. Insert the Axle (54) through one of the Wheels

(55). With these two assembled together, insert Axle (54) through the bracket on the bottom of the Tank Assembly

(50). Slide on Washer (56) and the Lock Washer (57) and tighten with the Nut (58). Once assembled, roll the

Air Compressor to test the operation of the wheels. Periodically check to insure that wheel and axle hardware

is secure. Next connect the Rubber Foot (52) to the compressor. Secure it using Bolt (51), Washer (60), and Nut

(61). See Assembly Diagram page 8.

Before Operation Check

To assist you with operation, please refer to the Assembly Diagram and Parts List located on pages 6, 7 and

Warning: Fill with compressor oil before using;

running with NO OIL or LOW OIL voids warranty.

Checking the Oil

Make certain to add compressor oil prior to operation. The Oil Fill Plug and Oil Sight is shown on the

illustration on page 6. Only use a good quality, 30-weight, non-detergent compressor oil.

Change the oil after every 500 hours of operation.

1. By checking the level of ﬂuid in the Oil Sight (20), you will be able to determine the oil level. The oil

level should be even with the dot in the center of the Oil Sight (20). If low, add oil until it is at the proper

level.

2. Oil is added by removing the Oil Plug (14) and, using a funnel to avoid spills, adding oil to the Compressor.

After Oil is added, replace the Oil Plug.

Operation

1. Plug the power cord into an electrical outlet with a grounding prong.

2. Pull up on the Power switch to turn on (see illustration on page 6). Push down on the switch to turn the

compressor off.

3. Allow the tank to ﬁll to 80 PSI before using. With the Air Compressor on, its operation is automatic and

under the control of the internal pressure switch.

Warning: Do not remove the factory sealed Air Control Valve (see illustration on page 6); removal of

this valve voids warranty.

Hose Connections

1. Close the Air Control Valve (turn to right or left).

2. Connect the high pressure air hose to the air outlet. The outlet is 1/4” NPT. Note: For easy connection

or removal, a quick coupler (not included) should be installed on the end of the outlet.

3. Turn the Air Control Valve to the middle position to allow the air to pass. REV 06c, 07h

SKU 40400 For technical questions, please call 1-800-444-3353. Page 5

Operation (continued)

WARNING! The automatic Pressure Switch (46) is factory set. It should only be adjusted to have the

original settings restored and this should only be done by a qualiﬁed technician. Adjustments made

by unqualiﬁed personnel or adjusting the pressure valve to other settings will VOID THE WARRANTY

and may cause damage to the compressor or PERSONAL INJURY.

The Safety Valve

The Safety Valve (see illustration on page 6 for location) is used as a backup to help prevent the tank

from exceeding its maximum safe pressure. Check before each use as follows: Pull on the Safety Valve ring to

release pressure; the valve is spring-loaded and has resistance, but it should move without sticking.

Empty Air and Condensation

The Petcock (53) release valve is located underneath the Tank Assembly (50). It must be used daily to

release all trapped air and moisture through this valve. It will also get rid of any condensation that may cause

tank corrosion.

Warning: Do not open the Petcock (53) so that more than four threads are showing.

1. Push down on the Power switch to turn the compressor off.

2. Unscrew the Petcock (53) two to three turns only.

3. When all pressure is released, close the Petcock (53) again.

NOTE: IF THE COMPRESSOR SUDDENLY SHUTS OFF, check and reset the unit’s

Overload Protection (59). Ensure that an extension cord is not being used.

REV 06a

SKU 40400 For technical questions, please call 1-800-444-3353. Page 6

REV 06c, 09c

Component Diagram

SHROUD

CYLINDER HEAD

FILTER SCREW

HANDLE

AIR PRESSURE SWITCH

REGULATED VALVE

DRAIN VALVE

AIR PRESSURE METER

TANK ASSEMBLY

SAFETY VALVE

AIR CONTROL VALVE

Hex Head Bolt

To drain the oil

remove this bolt.

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS

MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES

ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALI-

FIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE

ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY

STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED

AND LICENSED TECHNICIANS AND NOT BY THE BUYER.THE BUYER ASSUMES ALL RISK AND LIABIL-

ITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS

THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

SKU 40400 For technical questions, please call 1-800-444-3353. Page 7

Parts List

Part Description Qty Part Description Qty

1 Socket Screw 4 30 Capacitor 1

2 Cylinder Head 1 31 Back Cover 1

3 Cylinder Head Gasket 1 32 Forced Air Fan 1

4 Valve 1 33 Stem Ring 1

5 Cylinder Gasket 1 34 Shroud 1

6 Cylinder 1 35 Stem Ring 2

7 Gasket 1 36 Pin 2

8, 8-1 Compression Ring 2 37 Strip Valve 1

8-2 Piston 1 38 Filter/Filter Screw 1

9 Wrist Pin Piston 1 39 Elbow, 90° 1

10 Piston 1 40 Drain Tube 1

11 Hex Head Nut 1 41 Check Valve 1

12 Crossed Screw 4 42 Tube 1

13 Handle 1 43 Drain Valve 1

14 Oil Retainer 1 44 Regulated Valve 1

15 Connecting Rod 1 45 Outlet 1

16 Gasket Crankcase 1 46 Air Pressure Switch 1

17 Hex Head Bolt 6 47 Air Pressure Meter 1

18 End Cover Assembly 1 48 Air Pressure Meter 1

19 Washer 1 49 Safety Valve 1

20 Oil Sight 1 50 Tank Assy 1

21 Stem Ring 1 51 Bolt 1

22 Washer 1 52 Rubber Foot 1

23 Crankshaft Cone Assy 1 53 Petcock 1

24 Inner Hex Head Bolt 1 54 Axle 2

25 Crank Case 1 55 Wheel 2

26 Cross-head Self-tapping Screw 1 56 Washer 2

27 Motor Drive 1 57 Lock Washer 2

28 Nut 1 58 Nut 2

29 Washer 1 59 Overload Protection 1

30 Capacitor 1 60 Washer 1

61 Nut 1

Note: Some parts listed and shown on this page are for illustration purposed only and are not

available individually as replacement parts.

REV 06a; 07h; 09c

Assembly Diagram

REV 06a; 07h

SKU 40400 For technical questions, please call 1-800-444-3353. Page 8

SKU 40400 For technical questions, please call 1-800-444-3353. Page 9

LIMITED 1 YEAR WARRANTY

Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability

standards, and warrants to the original purchaser that this product is free from defects in materials and

workmanship for the period of one year from the date of purchase (90 days if used by a professional contractor

or if used as rental equipment). This warranty does not apply to damage due directly or indirectly, to misuse,

abuse, negligence or accidents, repairs or alterations outside our facilities, normal wear and tear, or to lack of

maintenance.We shall in no event be liable for death, injuries to persons or property, or for incidental, contingent,

special or consequential damages arising from the use of our product. Some states do not allow the exclusion or

limitation of incidental or consequential damages, so the above limitation of exclusion may not apply to you.THIS

WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING

THE WARRANTIES OF MERCHANTABILITY AND FITNESS.

To take advantage of this warranty, the product or part must be returned to us with transportation charges

prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our

inspection veriﬁes the defect, we will either repair or replace the product at our election or we may elect to refund

the purchase price if we cannot readily and quickly provide you with a replacement. We will return repaired

products at our expense, but if we determine there is no defect, or that the defect resulted from causes not within

the scope of our warranty, then you must bear the cost of returning the product.

This warranty gives you speciﬁc legal rights and you may also have other rights which vary from state

to state.

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353

REV 09c

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