OPTIMUM
M A S C H I N E N - G E R M A N Y
Version 1.0.1 dated 2015-12-17
Page 65
Original operating instructions
MH25V
GB
A - to detect AC fault currents and pulsating DC fault currents (provided the DC current
reaches zero at least once every half cycle).
B - to detect AC fault currents, pulsating DC fault currents and smooth DC fault currents.
The AC type should never be used with converters.
Type A can only be used with single-phase converters.
Type B must be used with 3-phase converters.
When using an external EMC filter, a time delay of at least 50 ms is required to avoid false error
shutdowns. The leakage current can exceed the threshold trigger value for an error shutdown, if
the phases are not switched on at the same time.
3.7
Cleaning and lubrication
Remove the anti-corrosive agents which has been applied to the milling machine for trans-
port and storage. We recommend you use paraffin for this purpose.
To clean the milling machine, do not use any solvents, nitro-cellulose thinner or other clean-
ing agents that could damage the paintwork. Observe the cleaning agent manufacturer's
information and notes.
Grease all exposed machine parts using an acid-free lubricating oil.
Lubricate the milling machine in accordance with the lubrication schedule.
"Inspection and maintenance“ on page 74
Check that all spindles are running smoothly. All spindle nuts are re-adjustable.
INFORMATION
The milling machine has been painted with
varnish
. This fact must be taken into account when
selecting your cooling lubricant.
Optimum Maschinen Germany GmbH does not accept any liability for subsequent damages
due to unsuitable cooling lubricants.
The flashpoint of the emulsion must be higher than 140°C.
When using non-water-miscible cooling lubricants (oil content > 15%) with a flashpoint, the
occurrence of ignitable aerosol-air mixtures cannot be excluded. This leads to a risk of explo-
sion.
