Optimum OPTigrind GU 15B Betriebsanleitung Seite 42

OPTIMUM
M A S C H I N E N - G E R M A N Y
currents and also all AC fault currents of all frequencies and mixed frequencies up to 1 MHz
are detected and switched off reliably in the event of a fault.
Alternating current - sensitive ELCBs of type AC (only alternating current) are

unsuitable for frequency converters. Alternating current - sensitive ELCBs of type
AC are not customarily used and are no longer permitted in Germany.
3.7 Operation

Before you start grinding, check that the workpiece is free of oil, grease and paint residues
to prevent smudging or soiling of the grinding wheels.

Check the condition of the grinding wheels. If the grinding wheels are dirty or muddied, they
must be roughened or replaced.

If necessary, clean the workpiece with the cleaning brush first.
The workpiece support can be adjusted for certain grinding operations. Loosen the clamping
screw to adjust the workpiece support.

Note that this adjustment results in a reduced potential load absorption of the workpiece
support.

The distance between the grinding wheel and workpiece support must be as low as possi-
ble.

Only put slight pressure on the workpiece.

Check the state of the grinding wheel. If it is dirty, it must be scraped clean or replaced.

Grinding wheels must be disposed of in an environmentally friendly manner.
INFORMATION
With speed-controlled grinding machines in conjunction with a suction unit, it is
possible that the suction unit does not switch on at too low a speed when work starts.

"Operation of extraction unit" on page 51
3.7.1 Suction connection of grinding wheel
GB GU15B │GU18B │GU20B │GU25B
Page 42
®
Translation of the original instructions
Unpacking and connecting
Version 1.0.2 dated 2019-9-13