Harbor Freight Tools Air Compressor 47065 User Manual

®
21 GALLON  
CAST IRON VERTICAL  
OIL-LUBRICATED  
AIR COMPRESSOR  
Heavy Duty 4 HP Peak Motor  
Model 47065  
OPERATING INSTRUCTIONS  
®
3491 Mission Oaks Blvd., Camarillo, CA 93011  
©
®
Copyright 2002 by Harbor Freight Tools . All rights reserved. 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.  
For technical questions, please call 1-800-444-3353.  
REV 11/02; 11/04  
 
5.  
6.  
7.  
USE EYE AND HAND PROTECTION. Wear ANSI approved safety impact  
goggles and heavy-duty work gloves when using this product. ANSI approved  
safety impact eyeglasses and heavy-duty work gloves are available from Harbor  
Freight Tools.  
DRESS SAFELY. Do not wear loose clothing 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.  
DO NOT OVERREACH. Keep proper footing and balance at all times to prevent  
tripping, falling, back injury, etcetera.  
8.  
9.  
INDUSTRIAL APPLICATIONS MUST FOLLOW OSHA REQUIREMENT.  
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 function. Check for damaged  
parts and any other conditions that may affect the operation of this product. Re-  
place or repair damaged or worn parts immediately.  
11.  
REPLACEMENT PARTS AND ACCESSORIES: 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.  
13.  
14.  
MAINTAINTHIS PRODUCT WITH CARE. Keep this product clean and dry for  
better and safer performance.  
MAINTENANCE: For your safety, service and maintenance should be performed  
regularly by a qualified technician.  
USETHE RIGHTTOOL FORTHE JOB. Do not attempt to force a small tool or  
attachment to do the work of a larger industrial tool. There are certain applica-  
tions 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: 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 47065  
For technical questions, please call 1-800-444-3353.  
PAGE 3  
 
SPECIFIC PRODUCT WARNINGS AND PRECAUTIONS  
1.  
AVERTISSEMENT : Assurez-vous pour remplir le Compresseur Aérien d’une  
qualité à prime, Le 30 poids, le pétrole de non-détersif avant chaque utilisation.  
Le fait de faire marcher du Compresseur Aérien sans pétrole ou avec le pétrole  
faible causera le dommage à l’équipement. Notez : le réservoir de pétrole a une  
capacité optimale de 30 onces de pétrole.  
2.  
3.  
WHEN CHECKING THE OIL LEVEL: Make sure to unscrew (do not pull) the Dip  
Stick (14B) out. (See Figure C, and Assy. Diagram B.)  
MAKE SURE ALL TOOLS AND EQUIPMENT USED WITH THE AIR COM-  
PRESSOR ARE RATED TO THE APPROPRIATE CAPACITY. Do not use any  
tool or equipment that does not operate from 0 to 115 PSI.  
4.  
5.  
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.)  
MAINTAIN A SAFE WORKING ENVIRONMENT. Keep the work area well lit.  
Make sure there is adequate surrounding workspace. Always keep the work area  
free of obstructions, grease, oil, trash, and other debris. Do not use the Air Com-  
pressor in areas near flammable chemicals, dusts, and vapors.  
6.  
7.  
8.  
9.  
AVOID INJURY: Never direct the Air Flow Valve (6A) at people or animals. (See  
Assy. Diagram A.)  
DO NOT ALTER OR REMOVE THE FACTORY SEALED PRESSURE  
RELEASE VALVE (5A). (See Assy. Diagram A.)  
DO NOT OPEN THE WATER DRAIN VALVE (10A) SO THAT MORE THAN  
FOURTHREADS ARE SHOWING. (See Assy. Diagram A.)  
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.  
10.  
11.  
12.  
THIS COMPRESSOR MAY REQUIRE A DEDICATED ELECTRICAL CIRCUIT  
AS THE AMPERAGE DRAW UNDER FULL LOAD COMBINED WITH USE OF  
ANY OTHER ITEM MAY OVERLOAD YOUR CIRCUIT.  
WARNING: This product contains or produces 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.)  
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 pacemaker.  
REV 02/04, 08/04, 10/04  
SKU 47065  
For technical questions, please call 1-800-444-3353.  
PAGE 4  
 
TO EXTENDTHE LIFE OF YOUR AIRTOOLS AND EQUIPMENT, it is recom-  
mended to install an oiler and water filter in series (available from Harbor Freight  
Tools) with the Air Output Line of the Air Compressor. (See Figure B.)  
AIR  
COMPRESSOR  
TO  
TOOL  
FIGURE B  
UNPACKING  
When unpacking, check to make sure all the parts shown on the Parts Lists on pages 10,  
and 11 are included. If any parts are missing or broken, please call Harbor Freight Tools at  
the number shown on the cover of this manual as soon as possible.  
OPERATING INSTRUCTIONS  
NOTE: For additional references to the parts listed below, refer to the Assembly  
Diagrams on pages 10, and 11.  
To Check The Oil Level:  
1.  
The Oil Window (20B) is used to determine if oil is needed. The oil level should  
always be at the maximum level (red line on the Oil Window). (See Figure C, and  
Assy. Diagram B.)  
REV 02/04  
SKU 47065  
For technical questions, please call 1-800-444-3353.  
PAGE 5  
 
2.  
If necessary, add a premium quality, 30-weight, non-detergent oil into the Oil Fill  
Hole until the level of oil reaches the maximum level as indicated on the Oil  
Window (20B). The optimal capacity of the oil reservoir is 30 ounces. Do not  
overfill. Then thread the Dip Stick back into the Oil Fill Hole, being careful not to  
strip the plastic threads.  
(See Figure C, and Assy. Diagram B.)  
Dip Stick (14B)  
Front Cover (18B)  
OilWindow (20B)  
FIGURE C  
ToTurn The Air Compressor On:  
1.  
Check to make sure the Water Drain Valve (10A) is fully closed.  
(See Assy. Diagram A.)  
2.  
3.  
Turn the Air Flow Valve (6A) to its “OFF” position. (See Assy. Diagram A.)  
Connect the air hose (not provided) to the Air Flow Valve (6A) of the Air Com-  
pressor. Then, connect the other end of the air hose to the pneumatic tool (not  
provided) that is to be used. (See Assy. Diagram A.)  
4.  
5.  
Note: Always plug the Power Cord of the Air Compressor into a 115V elec-  
trical source ( 10% maximum variation).  
Pull up on the “ON/OFF” Power Switch (1A) to turn the Air Compressor on.  
(Push down on the “ON/OFF” Power Switch to turn the Air Compressor off.)  
(See Assy. Diagram A.)  
6.  
7.  
Allow sufficient time for the Tank Pressure Gauge (4A) to indicate 80 PSI before  
using the Air Compressor. (See Assy. Diagram A.)  
Turn the Air Flow Valve (6A) to its “ON” position to allow air to the pneumatic tool.  
(See Assy. Diagram A.)  
REV 11/04  
SKU 47065  
For technical questions, please call 1-800-444-3353.  
PAGE 6  
 
8.  
NOTE:With the Air Compressor turned on, the operation is automatic and under the  
control of the automatic switches inside the box under the Power Switch (1A).  
NEVER open the power switch box or adjust the controls within.  
To AdjustThe Air Output To The Pneumatic Tool:  
1.  
2.  
3.  
NOTE: When adjusting the air pressure being forwarded to the pneumatic tool, you  
will need to compare the pressure readings of both the Tank Pressure Gauge (3A)  
and the Tool Pressure Gauge (4A). The reading on the Tank Pressure Gauge dic-  
tates the maximum/minimum air pressure at which the Tool Pressure Gauge may  
also be set. (See Assy. Diagram A.)  
With the Air Compressor running, and the air hose and pneumatic tool hooked up to  
the Air Compressor, pull up on the Tool Pressure Adjuster (2A). Turn the Tool Pres-  
sure Adjuster clockwise to increase the air output to the tool, up to the working air  
pressure (115 PSI) as indicated on the Tank Pressure Gauge (3A). (See Assy.  
Diagram A.)  
Turn the Tool Pressure Adjuster (2A) counterclockwise to decrease the air output  
to the tool, down to the minimum rated pressure (0 PSI) as indicated on the Tank  
Pressure Gauge (3A). (See Assy. Diagram.)  
To UseThe Tank Pressure Relief Valve:  
1.  
2.  
3.  
The Tank Pressure Relief Valve Ring (5A) is used when decompression is needed  
quickly and efficiently. (See Assy. Diagram A.)  
To decompress the Air Tank (9A) pressure, press the “ON/OFF” Power Switch (1A)  
down to turn off the Air Compressor. (See Assy. Diagram A.)  
Pull out on the Tank Pressure Relief Valve Ring (5A) to immediately release air  
pressure in the Air Tank (9A). (See Assy. Diagram A.)  
To Empty Air And Condensation FromThe Tank:  
1.  
The Water DrainValve (10A) is located underneath the Air Tank (9A), and should be  
used daily to release all trapped moisture through this valve. The Water Drain Valve  
will also eliminate condensation that may cause Air Tank corrosion. (See Assy.  
Diagram A.)  
2.  
3.  
WARNING: Do not open the Water Drain Valve (10A) so that more than four  
threads are showing.  
Push down on theON/OFF” Power Switch (1A) to turn off the Air Compressor. Then,  
unplug the Air Compressor’s Power Cord from the electrical outlet. (See Assy. Dia-  
gram A.)  
4.  
Slowly and carefully unscrew (no more than four threads) the Water Drain Valve  
(10A) until the compressed air and condensation begins to be released from the Air  
Tank (9A). Allow sufficient time for all of the air and condensation to escape from  
the AirTank. Then, firmly retighten the Water Drain Valve. (See Assy. Diagram A.)  
REV 01/05; 08/05  
SKU 47065  
For technical questions, please call 1-800-444-3353.  
PAGE 7  
 
Reference: Overload Switch (#35B)  
The overload breaker will trip if an over-current condition is sensed, stopping the  
motor. If this occurs, shut off the pressure switch and wait at least 5 minutes.  
Release the air pressure in the tank to ease restarting. Then press the breaker  
button to reset it, and turn on the pressure switch.  
INSPECTION, MAINTENANCE, AND CLEANING  
1.  
2.  
CAUTION: Always disconnect the Air Compressor from its electrical supply source  
before performing any inspection, maintenance, or cleaning.  
BEFORE EACH USE, inspect the general condition of the Air Compressor. Check  
all air fittings for leaks. Check for loose screws, misalignment or binding of moving  
parts, cracked or broken parts, damaged power cord and plug, and any other con-  
dition that may affect the safe operation of this tool. If abnormal noise or vibration  
occurs, immediately disconnect the Air Compressor from its electrical supply source  
and have the problem corrected before further use.  
Do not use damaged equipment.  
3.  
4.  
DAILY: Check the Air Compressor oil level. If necessary, fill with a premium quality,  
30-weight, non-detergent oil. NOTE: When checking the oil level, make sure to  
unscrew (do not pull) the Dip Stick (14B). (See Assy. Diagram B.)  
DAILY: Purge the Air Tank (9A) of all air and moisture to prevent corrosion. To do  
so, slowly and carefully unscrew (no more than four threads) the Water DrainValve  
(10A) until the compressed air and condensation begins to be released from the Air  
Tank. Allow sufficient time for all of the air and condensation to escape from the Air  
Tank. Then, firmly retighten the Water Drain Valve. (See Assy. Diagram A.)  
5.  
6.  
EVERY 100 HOURS OF USE: Clean the Air Filter (7A) with a mild solvent. Then,  
dry and reattach the Air Filter. NOTE: Replace the Air Filter if it is too dirty to  
properly clean. (See Assy. Diagram A.)  
EVERY 500 HOURS OR 12 MONTHS: Replace the old oil with new, premium qual-  
ity, 30-weight, non-detergent oil.  
7.  
8.  
TO CLEAN: wipe with a damp cloth, using a mild detergent or mild solvent.  
WHEN STORING: Keep the Air Compressor in a clean, dry location.  
PLEASE READ THE FOLLOWING CAREFULLY  
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDEDTHE PARTS LIST AND ASSEMBLY DIAGRAM  
INTHIS MANUAL AS A REFERENCETOOL ONLY. NEITHERTHE MANUFACTURER OR DISTRIBUTOR MAKES  
ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED 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 TECH-  
NICIANS, AND NOT BYTHE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS  
OR HER REPAIRSTOTHE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF  
HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.  
REV 02/04; REV 03/05  
SKU 47065  
For technical questions, please call 1-800-444-3353.  
PAGE 8  
 
PARTS LIST A / ASSEMBLY DIAGRAM  
Part  
Description  
Qty. Part  
Description  
Qty.  
1
1A ON/OFF Power Switch  
2A Tool Pressure Adjuster  
3A Tank Pressure Gauge  
4A Tool Pressure Gauge  
5A Pressure Release Valve  
6A Air Flow Valve  
1
1
1
1
1
1
1
1
1
1
11A Quick Release Coupler  
12A Rubber Wheel  
13A Washer  
2
2
14A Nut  
2
15A Fitting  
1
16A Oil Drain Plug with Gasket  
17A Foot  
1
7A Air Filter  
2
8A Air Flow Lid  
18A Unloader Valve  
19A Polyurethane Unloader Tube  
20A Copper Air Tube  
1
9A Air Tank  
1
10A Water Drain Valve  
1
16A  
(RearView with motor cover removed.)  
7A  
1A  
2A  
8A  
5A  
3A  
4A  
20A  
6A  
18A  
19A  
15A  
11A  
9A  
12A  
10A  
13A  
14A  
17A  
REV 11/02; 05/04; 08/04; 11/04; 12/04  
SKU 47065  
For technical questions, please call 1-800-444-3353.  
PAGE 9  
 
PARTS LIST B / ASSEMBLY DIAGRAM B  
Part  
Description  
Qty.  
4
Part  
Description  
Qty.  
1
1B Bolt  
19B Gasket  
2B Cylinder Case  
3B Gasket  
1
20B Oil Window  
1
1
21B Crankshaft Bolt  
22B Crankshaft  
1
4B Valve Seat  
5B Gasket  
1
1
1
23B Crankshaft Case  
24B* Stator  
1
6B Cylinder  
1
1
7B Compression Ring  
8B Oil Scraping Ring  
9B Piston  
2
25B* Bearing  
2
1
26B* Armature  
1
1
27B Start Capacitor, 70 µF 5% bMK  
28B Radiating Fan Wheel  
29B Retainer Ring  
30B Bolt  
1
10B Gasket  
1
1
11B Piston Pin  
12B* End Cover  
13B Crankshaft Retainer  
14B Dip Stick  
1
1
1
4
2
31B Screw  
2
1
32B Radiating Cover  
33B* Seal Washer  
34B Motor Assembly  
35B Overload Switch  
36B Run Capacitor, 50 µF 5% bMK  
1
15B Connecting Rod  
16B Gasket  
1
1
1
1
17B Bolt  
6
1
18B Front Cover  
1
1
*Not available individually. Must be ordered as entire Motor Assembly (See part #34B).  
NOTE: Some parts are listed and shown for illustration purposes only, and are not  
available individually as replacement parts.  
REV 12/04  
SKU 47065  
For technical questions, please call 1-800-444-3353.  
PAGE 10  
 

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