OPTIMUM
M A S C H I N E N - G E R M A N Y
Assembly and commissioning
Version 1.0.1 dated 2016-02-23
Page 33
Original operating instructions
MZ4
│
MZ4V
GB
Operation on IT line systems is not permitted. In an IT line system, all of the conductors are
insulated with respect to the PE protective conductor – or connected to the PE protective con-
ductor through an impedance. Operation on an IT line system is not permitted.
Permissible line supplies
Operation on TN and TT line systems
TN line system
The TN line system in accordance with IEC 60364-1 (2005) transmits the PE conductor to the
installation via a conductor. Generally, in a TN line system the neutral point is grounded There
are versions of a TN line supply with a grounded line the conductor, e.g. with grounded L1.
A TN line system can transfer the neutral conductor N and the PE protective conductor either
separately or combined.
TT system
In a TT line system, the transformer grounding and the installation grounding are independent
of one another. There are TT line supplies where the neutral conductor N is either transferred –
or not.
3.6
First commissioning
WARNING!
Commissioning should only take place after proper installation of the machine.
First commissioned of the milling machine by inexperienced personnel constitute a risk
to personnel and equipment.
We do not accept any liability for damages caused by incorrectly performed
commissioning.
"Qualification of personnel“ on page 12
WARNING!
The use of improper tool holders or their operation at inadmissible speeds constitutes a
hazard.
Only use the tool holders (e.g. drill chuck) which were delivered with the machine or
which are offered as optional equipment by OPTIMUM.
Only use tool holders in the intended admissible speed range.
Tool holders may only be modified in compliance with the recommendation of
OPTIMUM or of the manufacturer of the clamping devices.
ATTENTION!
Before commissioning the machine, all bolts, fastenings and protections must be
checked and retightened as necessary!
