background image

Page 15

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

SKU 67708 

        

troubleshooting

Problem

Possible causes

likely Solutions

Compressor does 

not start or restart

1.  Incorrect power supply.
2.  No power at outlet. 

3.  Power cord not plugged in 

properly.

4.  Thermal overload switch 

tripped.

5.  Building power supply circuit 

tripped or blown fuse. 

6.  Tank(s) already pressurized.
7.  Cord wire size is too small or 

cord is too long to properly 

power compressor.

8.  Compressor needs service.

1.  Check that circuit matches compressor requirements.
2.  Reset circuit breaker, or have outlet serviced by a qualified 

technician.

3.  Check that cord is plugged in securely. 

4.  Turn off Tool.  Turn off Compressor and wait for it to cool down.  

Press reset button.  Resume operation.

5.  Reset circuit or replace fuse.  Check for low voltage conditions.  

It may be necessary to disconnect other electrical appliances 

from the circuit or move the compressor to its own circuit.

6.  No problem.  Compressor will start when needed.
7.  Use larger diameter or shorter extension cord or eliminate 

extension cord.  See Recommended Wire Gauge for Extension 

Cords in Safety section.

8.  Have unit inspected by a qualified technician.

Compressor builds 

pressure too slowly

1.  Incorrect power supply.
2.  Crankcase overfilled with oil or 

oil too thick.

3.  Working environment too cold. 

4.  Safety valve needs service. 

5.  Loose fittings.

1.  Check that circuit matches compressor requirements.
2.  Drain oil and refill to proper level with recommended oil. 

3.  Move unit to a warmer location.  Check that recommended oil 

is in crankcase.

4.  Listen for air leaking from valve.  If leaking replace with 

identical valve with same rating.

5.  Reduce air pressure, then check all fittings with a soap solution 

for air leaks and tighten as needed.  Do not overtighten.

Compressor not 

building enough air 

pressure

1.  Filters need cleaning/replacing.
2.  Crankcase oil too thick.  
3.  Check Valve needs service.
4.  Compressor not large enough 

for job. 

5.  Loose fittings. 

6.  Hose or hose connections not 

adequate.

7.  High altitude reducing air 

output.

1.  Check inlet and outlet filters.  Clean and/or replace as needed.
2.  Drain oil and refill to proper level with recommended oil.
3.  Have technician clean or replace, as needed.
4.  Check if accessory SCFM is met by Compressor.  If 

Compressor cannot supply enough air flow (SCFM), you need 

a larger Compressor.

5.  Reduce air pressure, then check all fittings with a soap solution 

for air leaks and tighten as needed.  Do not overtighten.

6.  Replace with larger hose and/or hose connections. 

7.  You may need a larger compressor if you are situated in a high 

altitude location.

High Oil 

Consumption

1.  Crankcase oil too thin.
2.  Unit not on level surface.
3.  Crankcase vent clogged.

1.  Drain oil and refill to proper level with recommended oil.
2.  Reposition unit on a level surface.
3.  Clean Crankcase vent.

 Follow all safety precautions whenever diagnosing or servicing the 

compressor.  disconnect power supply before service.

Summary of Contents for 67708

Page 1: ...l 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 Diagrams within this manu...

Page 2: ...ing 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 Depressurizatio...

Page 3: ...ided 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 per...

Page 4: ...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 cha...

Page 5: ...0 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 RECOMMENDED MINIMUM...

Page 6: ...the plug will not 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 breakdo...

Page 7: ...plug illustrated above in 125 V 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 compres...

Page 8: ...ant 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 Tur...

Page 9: ...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...

Page 10: ...hown above on the sight glass 3 To add oil a Remove the Oil Plug b Using a funnel to avoid spills pour enough oil into the Pump Crankcase to reach the full level in the Oil Sight Glass c Replace the O...

Page 11: ...ild up pressure until it cycles off Note At the beginning of the day s first use of the Air Compressor check for air leaks by applying soapy water to connections while the Air Compressor is pumping an...

Page 12: ...is necessary to quickly depressurize the Compressor turn the Power Switch OFF Then pull on the ring on the Safety Valve 73 to quickly release stored air pressure Automatic Shut off System 1 Reset But...

Page 13: ...rfaces of the compressor with a clean cloth 3 WARNING If the supply cord of this compressor is damaged it must be replaced only by a qualified service technician Maintenance Schedule Following are gen...

Page 14: ...the FULL level on the Oil Sight Glass f Replace and tighten the Oil Breather Plug g Discard the old oil according to local state and federal regulations Draining Moisture from the Tank The Drain Valve...

Page 15: ...Check that circuit matches compressor requirements 2 Drain oil and refill to proper level with recommended oil 3 Move unit to a warmer location Check that recommended oil is in crankcase 4 Listen for...

Page 16: ...needed Do not overtighten Excessive noise 1 Crankcase overfilled with oil or oil is incorrect thickness or type 2 Crankcase oil level too low 3 Loose or damaged belt guard 4 Loose fittings 5 Unit not...

Page 17: ...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 buy...

Page 18: ...Glass 1 34 O Ring 1 35 Drain Plug M5 x 10 1 36 O Ring 1 37 Oil Breather Plug 1 38 Crankcase Cover Gasket 1 39 Pump Crankcase 1 40 Washer M5 10 41 Screw M5 x 16 10 Part Description Qty 42 Manual Overl...

Page 19: ...Page 19 For technical questions please call 1 800 444 3353 SKU 67708 ASSEMBLY DIAGRAM...

Page 20: ...ecial 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...

Reviews: