TOOL OPERATION
(continued)
• Do not drive fasteners on top of other fasteners or with tool at too steep of an angle; fasteners can
ricochet and hurt someone.
• Do not strike the ram/actuator or any part of the tool with the metal portion of the mallet. Use the
rubber capped end only to prevent possible injury and/or damage to the tool.
• Do not drive fasteners into thin boards or near corners and edges of work piece. Fasteners can be
driven through or away from work piece and hit someone.
• Do not overdrive fasteners. NWFA (National Wood Flooring Association) states that one reason for
split tongues is overdriving.
• Never use tool which is defective or operating abnormally.
• Do not use tool as a hammer.
• Disconnect air hose from tool when:
1) It is not in use;
2) Leaving work area;
3) Moving it to another location; and
4) Handing it to another person.
• Wear safety glasses and safety shoes for protection against foreign objects.
• Never use a Hammer with a loose head or splintered handle.
• Use only fasteners from Porta-Nails.
• Air supply hoses should have a minimum working pressure rating of 150 psi or 150 percent of the
maximum pressure produced in the power source, whichever is higher.
• Check all hoses before connecting to ensure that they are free from dirt, grit, or particles that could
alter the performance of the tool.
• An airline Filter and In-Line Air Regulator adjustable to 125 psi max are required.
• NEVER use a defective tool. Replace worn or damaged parts immediately. Be sure that the Safety
Trigger and operating mechanisms operate correctly and that all screws and seals are securely
tightened at all times.
METHODS OF OPERATION
After connection with power source is made, check to be sure that the airline Regulator pressure is 70-90
psi . Note: Some flooring wood species /materials may require a higher pressure in order to countersink
the fastener . Harder more dense Flooring wood species requires more pressure than typical Oak or Maple
flooring . Face Nailing requires approximately 5 psi or more than Angle Nailing .
Ensure that tool is in proper working order and that there is no leaking of air . If there is an air leak, Disconnect
Immediately! Arrange for repairs by a Porta-Nails authorized service center . After being sure tool is operable,
place tool in position to be used . Always place the tool in proper position against the flooring to be fastened
before depressing the trigger and striking the ram .
The Model 472A Pneumatic Flooring Stapler has a safety trigger that prevents accidental operation if ram cap
is hit while connected to power source . Squeeze safety lever to enable the tool . Releasing the safety lever
re-engages the safety and renders the tool inoperable . To operate tool, depress safety trigger while tool is in
position of use, and tap the ram cap with a minimal stroke from the hammer . If on the first initial operation a
fastener does not eject into the flooring, repeat hammer blow . This will ensure that the driver blade/Piston is
properly reset to allow the driver blade/piston to be in the correct position to drive the fastener .
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METHODS OF OPERATION
DO NOT OVERPOWER THE TOOL– A 90lb static force will operate the tool . This is easily achieved by a tap
of the Hammer . If the Flooring is warped or bowed, the ram can be hit firmly to tighten the flooring . Try to
avoid this constant wear, as abusive blows by the hammer could damage tool and / or internal parts .
DO NOT HIT THE TOOL HARD
This tool is pneumatically powered and requires only actuation by depressing the safety trigger and
tapping the ram head .
Note: The 472A Pneumatic Flooring Stapler will not drive a fastener if the ram cap is struck by hammer
and the safety trigger is not depressed .
The 472A Pneumatic Flooring Stapler is user-friendly and following these simple instructions, will
insure a very high quality hardwood flooring installation .
If the fastener is not properly seated, increase pressure incrementally until fastener is seated .
DO NOT EXCEED 100 PSI!
WARNING
• Keep your finger off the trigger except during fastening operation, because serious injury could
result if the contact ram accidentally contacts you or others in the work area.
• Keep hands and body away from the discharge area. The tool may bounce from recoil of driving a
fastener and unwanted subsequent fastener may be driven, possibly causing injury.
• Some types of loaded fasteners can spark out of the muzzle during a driving operation. Exercise
caution!
INSTALLING TONGUE AND GROOVE FLOORING
Caution regarding use of this tool to install pre-finished flooring.
This tool was designed for use in installing unfinished hardwood flooring . It can be used to install
pre-finished flooring when used with the pre-finish flooring accessory shoe; however, caution must be
used to ensure that the finish is not damaged by the tool . In all flooring applications, it is recommended
that the tool be tested on a sample section to be certain that the tool and technique of use do not leave
marks on the finish . This procedure should be followed before each job due to variations in flooring and
tool condition .
After squaring the floor and allowing for expansion as recommended by the Wood Flooring Industry
(NWFA and MFMA), install felt vapor barrier and use chalk line to identify location of subfloor nails prior
to racking wood to be installed . This will help prevent hitting subfloor nails which can cause damage to
the driver blade and jamming . Place the grooved edge of the first row of flooring towards the wall on
the side of the room from which you are starting .
Face nail first four (4) rows of flooring .
Place the groove of the fifth row of flooring over the tongue of the fourth row of flooring and tighten
using the hammer . Position the nailer on the flooring; depress the safety trigger, and impact the ram
head of the tool with the mallet to actuate the nailer .
(continued)
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