13
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Piston Extended
Out of Muzzle
Selecting Power Fasteners
and Power Loads
FASTENING INTO CONCRETE
The proper power fastener length can be determined by
adding the thickness of the material to be fastened and
the amount of power fastener that will actually penetrate
the concrete. The concrete must be three times as thick
as the intended power fastener penetration. In most
cases, penetration should be approximately 1" to 1
1
/
4
"
into the base concrete material.
FASTENING INTO STEEL
The proper power fastener length can be determined by
adding the thickness of the material to be fastened and
the thickness of the steel. The point of the power
fastener must go completely through the steel.
POWER LOADS AND POWER
INDICATOR SETTING
Proper fastening requires the correct combination of power
load level and the tool’s power indicator setting to match the
fastener length for a given application. A general estimate
for the power load level needed for a given application can
be found in the application chart on page 27. For a given
power load level, always start with the lowest power
indicator setting on the tool. If the first test fastening does
not penetrate to the desired depth, increase the tool’s
power indicator setting until a proper fastening is made.
IMPORTANT: Damage to the tool will result if the above
instructions are not followed (see illustrations to right
and lower right).
OVERDRIVEN POWER FASTENERS
AND PISTON
An overdriven power fastener results when the combi-
nation of power load level and the tool’s power indicator
setting is too strong causing the piston to extend past
the muzzle. Decrease the tool’s power indicator set-
ting. Repeated overdrive will damage your tool. By
avoiding overdrive, you can extend the life of your tool
considerably.
NOTE: NEVER fire the tool without a power fastener.
This can damage the tool and/or cause possible injury to
the operator.
Wood or Non-Metals
To Steel
Wood or Non-Metals
To Concrete
Flush With Surface
RIGHT
OVERDRIVE
G 018