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return to the ‘Off’ position when released.
– Always shut off the air supply to the tool and press the
‘On/Off’ valve to exhaust the air from the feed hose
before fitting, removing or adjusting the working
attachment fitted to the tool.
– Before using the tool, make sure that a shut off device
has been fitted to the air supply line and the position is
known and easily accessible so that the air supply to
the tool can be shut off in an emergency.
– Check hose and fittings regularly for wear.
– Take care against entanglement of the moving parts of
the tool with clothing, hair, ties, cleaning rags, rings,
jewelry, watches, bracelets, etc. This could cause the
body or parts of the body to be drawn towards and in
contact with the moving parts of the tool and could be
very dangerous.
– It is expected that users will adopt safe working
practices and observe all local, regional and country
l e g a l r e q u i r e m e n t s w h e n i n s t a l l i n g , u s i n g o r
maintaining the tool.
– Take care that the exhaust air does not point towards
any other person or material or substance that could
be contaminated by oil droplets. When first lubricating
a tool or if the tool exhaust has a high oil content, do
not allow the exhaust air to come near ver y hot
surfaces or flames.
– Never lay the tool down until the working attachment
has stopped moving.
– When the tool is not in use, shut off the air supply and
press the trigger/lever to drain the supply line. If the
tool is not to be used for a period of time, first lubricate,
disconnect from air supply and store in a dry average
room temperature environment.
– If the tool is passed from one user to a new or
inexperienced user, make sure these instructions are
passed with the tool.
– Do not remove any manufacturer fitted safety devices
where fitted, i.e., wheel guards, safety trigger, speed
governors, etc.
– Wherever possible, secure workpiece with clamps, a
vise, etc. to make it rigid so it does not move during the
work operation. Keep good balance at all times. Do not
stretch or overreach.
– Try to match the tool to the work operation. Do not use
a tool that is too light or heavy for the work operation. If
in doubt, seek advice.
– I n g e n e ra l t e r m s, t h i s t o o l i s n o t s u i t a bl e fo r
underwater use or use in explosive environments —
seek advice from manufacturer.
– Try to make sure that the work area is clear to enable
the work task to be performed safely. If practical and
possible, try to clear unnecessary obstructions before
starting work.
– Always use air hose and couplings with minimum
working pressure ratings at least 1 1/2 times the
maximum working pressure rating of the tool.
Work Stations
The tool should only be used as a handheld, hand operated tool. It
is always recommended that the tool is used when standing on the
solid floor. It can be used in other positions, but before any such
use, the operator must be in a secure position having a firm grip
and footing and be aware that when loosening fasteners the tool
can move quite quickly away from the fastener being undone. An
allowance must always be made for this rearward movement so as
to avoid the possibility of hand/arm/body entrapment.
Putting Into Service
Air Supply
Use a clean lubricated air supply that will give a measured air
pressure at the tool of 90 p.s.i./6.2 bar when the tool is running
with the trigger fully depressed and the air regulator in its
maximum opening flow position. Use recommended hose size and
length. It is recommended that the tool is connected to the air
supply as shown in figure 1. Do not connect a quick connect
coupling directly to the tool, but use a whip or leader hose of
approximately 12 inches length. Do not connect the tool to the air
line system without incorporating an easy to reach and operate air
shut off valve. The air supply should be lubricated. It is strongly
recommended that an air filter, regulator, lubricator (FRL) is used,
as shown in Figure 1, as this will supply clean, lubricated air at the
correct pressure to the tool. Details of such equipment can be
obtained from your supplier. If such equipment is not used, then
the tool should be lubricated by shutting off the air supply to the
tool, depressurizing the line by pressing the throttle lever on the
tool. Disconnect the air line and pour into the hose adaptor a
teaspoonful (5ml) of a suitable pneumatic motor lubricating oil
preferably incorporating a rust inhibitor. Reconnect tool to air
supply and run tool slowly for a few seconds to allow air to
circulate the oil. If tool is used frequently, lubricate on daily basis
and if tool starts to slow or lose power. When lubricating, also
ensure that the air inlet bushing is clean.
It is recommended that joint tightness of the threaded fastener
assembly be checked with suitable measuring equipment.
It is recommended that the air pressure at the tool while the tool is
running is 90 p.s.i./6.2 bar.
Operating
The output of the impact wrench in prime working condition is
governed by mainly three factors:
a) the input air pressure;
b) the time the impact wrench is operated on the joint. Normal time
for joints of average tension requirement 3 to 5 seconds;
c) the setting of the air regulator for a given joint at a given pressure
operated for a given time.
The air regulator can be used to regulate the output of the
impact wrench if no other means of control is available. It is strongly
recommended that an external pressure regulator, ideally as part of
a filter/regulator/lubricator (FRL), is used to control air inlet pressure
so that the pressure can be set to help control the tension required
to be applied to the threaded fastener joint.
There is no consistent, reliable torque adjustment on an impact
wrench of this type. However, the air regulator can be used to adjust
torque to the approximate tightness of a known threaded joint. To set
the tool to the desired torque, select a nut or screw of known
tightness of the same size, thread pitch and thread condition as those
on the job. Turn air regulator to low position, apply wrench to nut and
gradually increase power (turn regulator to admit more air) until nut
moves slightly in the direction it was originally set. The tool is now set
to duplicate that tightness, note regulator setting for future use. When
tightening nuts not requiring critical torque values, run nut up flush
and then tighten an additional one-quarter to one-half turn (slight
additional turning is necessary if gaskets are being clamped). For
additional power needed on disassembly work, turn regulator to its
fully open position. This impact wrench is rated a 3/4" bolt size.
Rating must be downgraded for spring U bolts, tie bolts, long cap
screws, double depth nuts, badly rusted conditions and spring
fasteners as they absorb much of the impact power. When possible,
clamp or wedge the bolt to prevent springback.
Foreseen Use Of The Tool –
5375A/5375AP
The impact wrench is designed for the tightening and loosening of
threaded fasteners within the range as specified by the
manufacturer. It should only be used in conjunction with suitable
impact type 3/4" square female drive nut running sockets. Only
use sockets which are of the impact type.
It is allowed to use suitable extension bars, universal joints and
socket adaptors between the square output drive of the impact
wrench and the square female drive of the socket.
Do not use the tool for any other purpose than that specified
without consulting the manufacturer or the manufacturer’s
authorized supplier. To do so may be dangerous.
Never use an impact wrench as a hammer to dislodge or straighten
cross threaded fasteners. Never attempt to modify the tool for other
uses and never modify the tool for even its recommended use as a
nutrunner.
Содержание 5375A
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