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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 residual currents.
Type AC should never be used in converters.
Type A can only be used for single-phase converters.
Type B must be used for 3-phase converters.
When using an external EMC filter, to avoid false error shutdowns, a time delay of at least 50
ms is required. The leakage current can exceed the threshold trigger value for an error shut-
down if the phases are not switched on at the same time.
3.7
Cleaning and lubrication
Remove the anti-corrosive agents on the milling machine which had been applied for trans-
portation and storage. Therefore, we recommend you to use paraffin.
To clean, do not use any solvents, nitro-cellulose thinner or other cleaning agents that could
damage the paint of the milling machine. Observe the information and notes of the cleaning
agent manufacturer.
Oil all blank machine parts using an acid-free lubricating oil.
Lubricate the milling machine according to the lubricating plan.
Inspection and maintenance on page 37
Check if all spindles are running smoothly. The spindle nuts are re-adjustable.
INFORMATION
The milling machine is lacquered with a
when selecting your cooling lubricant.
The company Optimum Maschinen Germany GmbH does not assume any guarantee for sub-
sequent 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, ignitable
aerosol air mixtures might develop. There is a potential danger of explosion.
Version 1.0.4 - 2020-12-15
one-component
paint. Take this criterion into account
Translation of original operating manual
MH25SV
EN
25
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