SATA 51075C, Operation Instruction Manual

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18 51075C
9. Operation
Be sure to fully lock the battery pack when
the battery pack is inserted, or else it may
accidentally fall from the tool and cause
personal injury. Hold the tool firmly, place the
socket on the top of the bolt or nut, start the
machine tool and start tightening at the proper
tightening time.
The proper tightening torque may vary along
with different types or sizes of bolts, and the
different workpieces to be tightened. Generally,
the longer the tightening time, the greater the
tightening torque.
Note:
• Align the tool with the bolt or nut.
• Excessive tightening torque may result
in damage to the bolt, nut or socket.
Before starting work, be sure to carry
out a commissioning trial operation to
determine the proper tightening time for
the bolt or nut.
• If the tool works continuously until the
battery pack runs out, it shall be paused
for 15 minutes before further operation
with a charged battery pack.
• Tightening torque is affected by the
following factors. After tightening, be sure
to confirm the torque with the torque
wrench.
1) When the battery is about to run out, the
voltage will drop and the tightening torque
will reduce.
2) Socket
• Using the wrong size socket will result in a
reduction in tightening torque.
• Damaged sockets (worn at the hexagonal
or rectangular ends) will reduce the
tightening torque.
2) Bolt
• Even if the torque coefficient and
bolt grade are the same, the required
tightening torque will be different due to
the diameters.
• Even if the diameter of the bolt is the
same, the required tightening torque will
be different due to the different torque
coefficient, as well as the grade and length
of the bolt.
4) The use of universal joints or extension
bars will reduce the tightening force of the
impact socket wrench to some extent, but
this can be compensated by extending the
tightening time.
5) The holding method of the tool or material
of the bolt will also affect the torque.
6) The low speed operation of the machine
tool will also reduce the tightening torque.
QUESTION AND ANSWER:
1. Why doesn’t the machine tool work after the
switch is pressed?
The reversing yoke on the top of the switch
is locked. Turn it to a position that requires
rotation, press the button and the machine tool
will start to rotate.
2. Why does the hand drill stop working before
the screw is tightened?
In this case, adjust the torque adjusting ring
between the body and the chuck. Position
1 corresponds to the minimum torque and
position 20 corresponds to the maximum
torque. Position 21 is designed for drilling. This
problem can be solved by adjusting the torque
adjusting ring to a higher gear position.
3. Why is the working time of the same battery
pack different?