Air System Requirements
1. Use proper air hose size (refer to tool specifications). The hose should be just long enough to serve the working
area. Excessive hose length will cause pressure drop.
2. Make sure air compressor supplies clean, dry air at correct CFM for the tool.
3. Set air pressure to 90 psi.
Excess air pressure
and/or unclean air will shorten the tool’s life and may create a hazardous
situation.
4. Drain water from air compressor tank daily, as well as any condensation from air lines. Water in the air line may
enter the tool and cause damage.
5. Change filters on the air system on a regular basis.
6. Airline pressure may be increased accordingly to compensate for extra-long air hoses (usually over 25 feet). Inside
diameter of hose should be minimum 3/8 in.
Storage
Avoid storing the shear in very humid locations which promotes rusting of internal mechanisms. Always oil the tool and
disconnect air hose before storage.
General Air Tool Information
If the air tool is not performing according to specifications, the following are among the most common causes.
(See also “Troubleshooting” section.)
• Contaminated air such as a dirty air system or water in the system
• Using wrong size tool for the job
• Poor maintenance practices, such as using excessive air pressure or air volume
• Improper or no lubrication
Rule of Thumb
If it takes more than 8 seconds to tighten or loosen a bolt or nut with an air impact wrench at maximum setting, the air
wrench is too small or
the air compressor CFM is not powerful enough for the job. Continued use in either capacity will
cause damage to the tool.
Tool Pressure
Operate on 70 to 100 psi (pounds per square inch) air pressure measured at the tool when the tool is operating. Set
tool to 90 psi unless indicated otherwise. Pressure in excess of 100 psi will shorten the life of the tool.
Air System Recommendations
Equip the air compressor intake with a replaceable air filter that can be easily cleaned. Use safety shut-off valves so air
flow can be stopped quickly in case of a line break. When using multiple hoses, air hoses should be larger than leader
hose. Join multiple hoses directly, rather than with quick connect fittings which may cause pressure drops and tool
power reduction. Use anti-whip devices across hose couplings to prevent hose from whipping in the event of a hose
failure or coupling disconnect. Always use moisture traps at the compressor for the main distribution line. Use moisture
traps and in-line oilers on each downline that is to be used for air tools. (See Figure 1). Place oiler as close to air tool
as possible for best lubrication.
Maintenance
Use a light oil containing rust inhibitors, such as SAE #10. Many air tools have integral oil reservoirs, which should be
kept filled when in-line oilers are not used. If greasing is required, use a grease that is highly water resistant for front
case components on air impact wrenches, grinders and sanders.
Recycling
Protect the environment. Your tool contains materials which can be recovered or recycled. When its useful life has
expired, please leave tool at a specialized facility.
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