Makita AN944 Instruction Manual Download Page 4

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Contact actuation (restricted version):

An actuating

system in which the trigger and the safety yoke have to
be actuated for each driving operation, with the order of
actuation not being specified. For subsequent driving
operations it is sufficient if either the trigger remains acti-
vated and the safety yoke is activated thereafter, or vice
versa.
Fastener driving tools equipped with contact actuation
must be marked with the symbol »Do not use on scaffold-
ings, ladders« and must not be used for specific applica-
tions for example:
• when moving from one driving loca-

tion to another involves the use of
scaffoldings, stairs, ladders, or lad-
der-like constructions, e.g. roof laths,

• closing boxes or crates,
• fitting transportation safety systems

e.g. on vehicles and wagons.

Single sequential actuation with trigger lock

: Some

models have a safety system consisting of a small lever
attached behind the trigger which blocks automatically
every time the trigger is released, preventing uninten-
tional triggering. If a fastener is to be driven, the safety
lever must be pulled first, which enables the main trigger
and makes it possible to press.

SYMBOLS

The followings show the symbols used for tool.

..................Read and understand tool labels and

manual.

..................Operators and others in work area must

wear safety glasses with side shields.

..................Keep fingers away from trigger when

not driving fasteners to avoid accidental
firing.

2. COMPRESSED AIR SYSTEM

Proper functioning of the fastener driving tool requires fil-
tered, dry and oiled compressed air in adequate quanti-
ties.
If the air pressure in the line system exceeds the maxi-
mum permissible operating pressure of the fastener driv-
ing tool, a pressure reducing valve followed by a
downstream safety valve shall additionally be fitted in the
supply line to the tool.
Note: When compressed air is generated by compres-
sors, the natural moisture in the air condenses and col-
lects as condensed water in pressure vessels and
pipelines. This condensate must be removed by water
separators. These water separators must be checked on
a daily basis and drained if necessary, since corrosion
can otherwise develop in the compressed air system and
in the fastener driving tool, which serves to accelerate
wear.
The compressor plant shall be adequately dimensioned
in terms of pressure output and performance (volumetric
flow) for the consumption which is to be expected. Line
sections which are too small in relation to the length of
the line (pipes and hoses), as well as overloading the
compressor, will result in pressure drops.

Permanently laid compressed air pipelines should have
an internal diameter of least 19 mm (0.75 inch) and a
correspondingly larger diameter where relatively long
pipelines or multiple users are involved. Compressed air
pipelines should be laid so as to form a gradient (highest
point in the direction to the compressor). Easily accessi-
ble water separators should be installed at the lowest
points.
Junctions for users should be joined to the pipelines from
above.
Connecting points for fastener driving tools should be fit-
ted with a compressed air servicing unit (filter/ water sep-
arator/ lubricator) directly at the junction point.
Lubricators must be checked on a daily basis and topped
up with the recommended grade of oil (see technical
data) if necessary. Adjust the lubricator of the mainte-
nance unit to 1 drop for approx. every 15 blows of the fas-
tener. Check the oil level in the reservoir regularly.
Where hose lengths of over 10 m (33 ft) are used, the oil
supply for the fastener driving tool cannot be guaranteed.
We therefore recommend an lubricator attached directly
to the fastener driving tool. Adjust the dosing so that it
has to be refilled approximately every 30 000 blows.