OPTIMUM
M A S C H I N E N - G E R M A N Y
Assembly
Version 2.0.2 2014-11-04
Page 30
Original operating instructions
B17Pro | B23Pro | B26Pro | B33Pro
GB
3.6.1 Warming up the machine
ATTENTION!
If the drilling machine and in particular the drilling spindle is immediately operated at
maximum load when it is cold it may result in damages.
If the machine is cold such as e.g. directly after having transported the machine it should be
warmed up at a spindle speed of only 500 1/min for the first 30 minutes.
3.7
Drilling machines with frequency converter
CAUTION!
Frequency converter have a high frequency leakage current which is discharged through
the protective conductor. Frequency converter must not be operated with a CEE plug.
Connect the machine firmly to a junction box. (see EN 50178 /VDE 5.2.11.1) . If the
machine can not be connected firmly on a junction box, the earth connection must not
be passed over the plug.
INFORMATION
The frequency converter (drive regulator) might release the Fl protected switch of your electrical
supply. In order to avoid malfunction, you either need an Fl protected switch sensitive for pulse
current or AC/DC sensitive. In case of malfunction or release of the FI protected switch, please
check the installed type. We recommend you to use an FI protected switch sensitive to AC/DC.
FI protected switches sensitive to AC/DC (RCCB), type B are adequate for 1-phase and 3-
phase fed frequency converters (driving regulator). An FI protected switch type AC (only for
alternating current) is not appropriate for frequency converters. FI protected switches type AC
are no longer used.
"Electrical connection“ on page 19,
"Qualification of the staff“ on page 11
ATTENTION!
For 400V machines: Imperatively make sure that all 3 phases ( L1, L2, L3) are correctly
connected.
Most motor defects result of wrong connections. For instance if a motor phase is not
correctly clamped or connected to the neutral conductor (N).
Effects may be as follows:
The motor is getting hot very rapidly.
Increased motor noises.
The motor has no power.
ATTENTION!
Check if the drive motor is turning in the correct rotation direction. If the rotational
direction switch is switched to the position to perform clockwise rotations (R) the
spindle needs to rotate clockwise. If necessary, exchange two phase connections.
If your connector plug is equipped with a phase inverter, this is done by turning it by
180°.
The guarantee will become null and void if the machine is wrongly connected.
