Air Supply...
Tools of this class operate on a wide range of air pressures. It is
recommended that air pressure of these tools measures 90 PSI at
the tool while running free. Higher pressure (over 90 psig; 6.2
bar) raises performance beyond the rated capacity of the tool,
which will shorten tool life because of faster wear and could
cause injury.
Always use clean, dry air. Dust, corrosive fumes and/or water in
the air line will cause damage to the tool. Drain the air tank
daily. Clean the air inlet filter screen on at least a weekly
schedule. The recommended hookup procedure can be viewed in
the above figure.
The air inlet used for connecting air supply has standard 1/4"
NPT. Line pressure should be increased to compensate for
unusually long air hoses (over 25 feet). Minimum hose diameter
should be 3/8" I.D. and fittings should have the same inside
dimensions and be tightly secured.
Operation...
When using the grinder, be careful not to exert excessive force.
Too much force may be hazardous, if it causes the cutting tool
spindle to bend or break.
The burning of the work piece or excessive speed reduction
indicates too much force being applied. Changing to a free
cutting tool may be better for the desired rate of speed and stock
removal.
Avoid hazardous condition by making sure there is sufficient
gripping force on the spindle of the cutting tool by placing the
spindle 7/16” or more inside the collet.
Lubrication...
Lubricate the air motor daily with quality air tool oil. If no air line
oiler is used, run a teaspoon of oil through the tool. The oil can
be squirted into the tool air inlet or into the hose at the nearest
connection to the air supply, then run the tool. The amount of oil
to be used is 1 ounce. Overfilling will cause a reduction in the
power of the tool.
Other factors outside the tool may cause loss of power or erratic
action. Reduced compressor output, excessive drain on the air
line, moisture or restrictions in air pipes or the use of hose
connections of improper size or poor condition may reduce air
supply. Grit or gum deposits in the tool may cut power and may
be corrected by cleaning the air strainer and flushing out the tool
with gum solvent oil or an equal mixture of SAE #10 oil and
kerosene. If outside conditions are in order, and the tool
continues erratic action on low power, disconnect tool from hose
and contact your nearest authorized service center.
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