Starting Operation; Working Advice; Maintenance And Service - Bosch GNA 16 Professional Manual Original

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Technical file (2006/42/EC) at:
Robert Bosch GmbH, PT/ETM9,
D-70745 Leinfelden-Echterdingen
Henk Becker
Executive Vice President
Engineering
Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
Leinfelden, 07.03.2014
Operation

Starting Operation

 Observe correct mains voltage! The voltage of the pow-
er source must agree with the voltage specified on the
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
Switching On and Off
To start the machine, press the On/Off switch 1.
For locking the On/Off switch 1 hold it down and push it back.
To switch off the machine, release the On/Off switch 1. When
the On/Off switch 1 is locked, press it first and then release it.
To save energy, only switch the power tool on when using it.
Changing the Cutting Direction
For changing the cutting direction, the die holder 4 can be
turned to three positions, each offset by 90°. Cutting toward
the rear (toward the housing of the machine) is not possible.
For turning the die holder 4 loosen the screw 2 until you can
turn the die holder. Turn it 90 ° to the right or the left in rela-
tion to the longitudinal axle of the power tool.
Make sure that the screw 2 engages into the borehole of the
die holder 4. Tighten the screw 2.

Working Advice

 Before any work on the machine itself, pull the mains
plug.
 The power tool is not suitable for stationary operation.
For example, it may not be clamped in a vice or fastened on
a workbench.
 Wear protective gloves while working and pay particu-
lar attention to the mains cable. Sharp burrs develop at
the cut steel sheet and can cause injuries to the operator or
damage the mains cable.
 Exercise caution when handling the cutting chips. The
chips have sharp tips that can cause injuries.
Apply the machine to the workpiece only when switched on.
Always hold the machine vertical to the surface of the steel
sheet and do not tilt it.
3 609 929 C96 | (28.3.14)
Helmut Heinzelmann
Head of Product Certification
PT/ETM9
The cut takes place during the downward motion of the punch.
Guide the machine evenly and with moderate feed in the cutting
direction. A high feed rate significantly reduces the service life
of the cutting tools and can damage the machine.
The machine operates more quietly when it is raised slightly
during cutting. If the punch should become wedged during
cutting, switch the machine off, relubricate the punch and re-
lease the tension of the steel sheet. Do not exert force, other-
wise the punch and the die will become damaged.
Maximum Steel Sheet Cutting Capacity
The maximum steel sheet cutting capacity d
the strength properties of the material to be cut.
The machine allows for straight and deformation-free cutting
of metal sheets to the following thicknesses:
Material Max. strength property
2
[N/mm ]
Steel 400
600
800
Aluminium 200
Lubricating/Cooling the Punch
To extend the service life of the punch 3, a lubricating agent
with good cooling properties (e.g. cutting oil) should be used.
Apply a trail of lubricant beads onto the top side of the metal
sheet alongside the intended cutting line. For long periods of
continual use or for work with high frictional wear (e.g. when
cutting aluminium), the cutting head should be immersed into
a container with lubricant in regular intervals.
Cutting along a Cutting Mark or with a Guide
Straight cuts are carried out easier when the machine is guid-
ed alongside a rule.
Contours can be cut by guiding the machine along a template.
For inside cuts, pre-drilling a hole with a diameter of 21 mm is
necessary.

Maintenance and Service

Maintenance and Cleaning
 Before any work on the machine itself, pull the mains
plug.
 For safe and proper working, always keep the machine
and ventilation slots clean.
Clean and lubricate the punch 3 and die 5 every 3 operating
hours.
Change the punch and die in good time when worn. Only
sharp tools produce a good cutting quality and make the ma-
chine last longer.
The punch 3 and the die 5 may not be reground.
depends on
max
d
max
[mm]
1.6
1.0
0.7
2.0
Bosch Power Tools