2.5 hp, 21 gallon, 125 PSI Cast Iron Vertical air compressor Model 67847 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. Copyright© 2010 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.
Contents Important SAFETY Information ���������������������������� 3 Draining Moisture from the Tank ����������������������������������������������15 Air Filter Maintenance ����������� 15 Troubleshooting ���������������������� 16 General Compressor Safety Warnings ���������������������� 3 Parts List ��������������������������������� 18 Air Compressor Safety Warnings �������������������������������������� 5 ASSEMBLY DIAGRAM ���������������� 19 Grounding ��������������������������������� 6 110-120 V~ Gr
not avoided, could result in minor or moderate injury. 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. NOTICE is used to address practices not related to personal injury.
matching outlets will reduce risk of electric shock. b. Do not expose the 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 pulling or 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.
. 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. 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.
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS (120 VOLT) NAMEPLATE AMPERES (at full load) EXTENSION CORD LENGTH 25’ 50’ 100’ 150’ 10.1 – 12 16 16 12.1 – 16 14 12 14 12 Do not use. TABLE A 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.
fit the outlet, have a proper outlet installed by a qualified electrician. 110-120 V~ 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.
To prevent serious injury from accidental operation: Turn the Power Lever “OFF” and unplug the Air Compressor from its electrical outlet before assembling or making any adjustments to the compressor. Specifications Electrical Requirements 120 V~ / 60 Hz / 2.5 HP Amperage 14A (Dedicated circuit recommended) Motor Speed 3400 RPM Phase Single Air Outlet Size 1/4”-18 NPT Air Pressure Auto Shut-Off @ 125 PSI Restart @ 95 PSI Air Tank Capacity 21 Gallons Air Flow Capacity 4.7 SCFM @ 90 PSI 5.
Work Piece and Work Area Set Up 1. Designate a work area that is clean and well-lit. The work area must not allow access by children or pets to prevent injury. 2. Locate the Compressor on a flat level surface to ensure proper pump lubrication and to prevent damage to the unit. Keep at least 12” of space around the unit to allow air circulation. 3.
c. Turn the Power Lever ON. d. Let the unit run for 30 minutes. Air will expel freely through the Coupler. Checking the Oil 1. e. Turn the Power Lever OFF. f. Unplug the Power Cord and remove the male coupler. Coupler Plug Coupler Plug Tool Quick Coupler Shut Off Valve Oiler Air Hose on Reel Filter 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.
c. Replace the Oil Plug. Cold Weather Operation Premium quality 30-weight, nondetergent 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 Nondetergent Air Compressor Oil in the pump crankcase instead whenever the compressor’s temperature will fall below 40°.
and will turn off automatically when the air pressure reaches 125 PSI as indicated. IMPORTANT: The internal pressure switch is not user adjustable, do not make changes to the air pressure settings of the internal pressure switch. Any change to the automatic pressure levels may cause excess pressure to accumulate, causing a hazardous situation. Emergency Depressurization If it is necessary to quickly depressurize the Compressor, turn the Power Lever OFF.
b. An air leak or open hose causing the compressor to cycle too often and build up heat. 3. Maintenance And Servicing Procedures not specifically explained in this manual must be performed only by a qualified technician. Correct any issues before further use to avoid damage to the compressor. To prevent serious injury from accidental operation: Turn the Power Lever “OFF” and unplug the Compressor from its electrical outlet before performing any inspection, maintenance, or cleaning procedures.
any other condition that may affect its safe operation. 2. After Use, wipe external surfaces of the tool with a clean cloth. 3. WARNING! If the supply cord of this power tool is damaged, it must be replaced only by a qualified service technician. Maintenance Schedule Following are general guidelines for maintenance checks of the Air Compressor.
Draining Moisture from the Tank Air Filter Maintenance The Drain Valve (66) is located under the Tank (70). It must be accessed daily to release all trapped air and moisture from the Tank. This will eliminate condensation which can cause tank corrosion. a. Remove the Cover (1). To empty the air and condensation: b. Remove the Air Filter (6). a. Make sure the Power Lever of the compressor is off. b. Place a collection pan under the Drain Valve.
Troubleshooting Problem Compressor does not start or restart Possible Causes 1. Incorrect power supply. 2. No power at outlet. 3. Power cord not plugged in properly. 4. Thermal overload switch tripped or Compressor circuit breaker tripped. 5. Building power supply circuit tripped or blown fuse.
Problem High Oil Consumption Overheating Possible Causes 1. Crankcase oil too thin. Likely Solutions 1. Drain oil and refill to proper level with recommended oil. 2. Unit not on level surface. 2. Reposition unit on a level surface. 3. Crancase vents clogged. 3. Clean Crankcase vents. 1. Filters need cleaning/replacing. 1. Check inlet and outlet filters. Clean and/or replace as needed. 2. Drain oil and refill to proper level with recommended 2. Crankcase oil too thin or oil. incorrect type. 3.
Parts List Part 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 26a 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Description Cover Elbow Start Valve Spring Washer M6 Screw M6 x 50 Air Filter Cylinder Head Head Gasket Valve Plate Metal Gasket Valve Valve Plate Gasket Cylinder Bolt M8 x 30 Spring Washer M8 Cylinder Gasket Pin Ø 13 x 44 Compression Ring Oil Ring Wrist Pin Retainer Piston Connecting Rod Screw M6 x 20 Hex Nut M6 Crank Shaft O-Ring Zip Tie Capacitor Screw M8 x 20 Capacitor
ASSEMBLY DIAGRAM b a a b SKU 67847 For technical questions, please call 1-800-444-3353.
Limited 1 year / 90 day 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 for a period of one year from date of purchase that the tank is free of defects in materials and workmanship (90 days if used by a professional contractor or if used as rental equipment).
