Jung J630D, Manual

Page: 219 / 316

J630D
7. Accessories 26.7.02 213
7. Accessories
7.1 Permanent electromagnetic chucks
Before using the magnetic chucks, please also study and heed all
the safety information contained in section 1, “Safety” that refers to
permanent electromagnetic chucks.
Only magnetizable workpieces can be clamped on the magnetic
chuck.
Take suitable precautions to prevent the workpieces from acciden-
tally slipping and/or tilting (e.g. by fitting shims). This applies parti-
cularly to workpieces that are clamped with a reduced clamping
force or that only have a very small locating surface. If such workpi-
eces are allowed to tilt or fly off the magnetic table, the grinding
wheel may burst apart.
Do not under any circumstances reduce the clamping force while
you are still grinding.
Make sure that magnets with 210 V DC voltage are always connected
to a 210 V DC supply. Magnets with 360 V DC voltage are only allo-
wed to be connected to a 360 V DC supply. If you ignore this war-
ning, it is possible that the workpieces will not be sufficiently
gripped by the magnet or that the magnet will be destroyed.
If the connecting cable or socket is defective, or if you notice any
other form of damage, you must remove the magnetic chuck from
service immediately. Safety-critical malfunctions may occur if mois-
ture is allowed to penetrate.
The magnetic chuck must not be modified in any way without prior
consultation with the manufacturer. Failure to comply will render
your warranty invalid and no further liability will be assumed by the
manufacturer.
Always use the built-in pulse control (installed in the factory) to ope-
rate the magnetic chuck. Only a short pulse is required to activate
the magnet. If you apply a sustained pulse, you will soon destroy it.