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1.6 Cleaning and maintenance
Clean and maintain the VKA-110 four-ball tester at regular intervals to ensure the
operational safety of the machine.
Switch off the main switch (Q1) of the four-ball tester before you start any cleaning and
maintenance works.
Ensure that the main switch (Q1) cannot be operated by unauthorised persons (padlock).
Even if the main switch (Q1) is turned off, some parts of the electrical system are live.
Always keep the control cabinet locked.
Do not clean the interior of the control cabinet. Risk of electrocution!
Warning: risk of explosion!
Oil mist-air mixtures may cause an explosion! Do not use compressed air or ozone to blow
off the VKA-110 four-ball tester.
Avoid open fire (smoking).
Take precautions to ensure that a fire can be extinguished quickly.
Do not use cleaning agents that attack synthetic material, rubber or varnish. They may
damage cables/wires, power points and displays.
Note that caustic cleaning agents such as, e.g., ethanol damage varnished coatings. Only
use cleaning agents suitable for varnish.
Cleaning agents may contain harmful substances.
Read the manufacturer's information carefully.
1.7 Electrics
Only qualified electricians and/or persons properly trained in accordance with electro-
technical regulations are permitted to work on, maintain or repair the electrical system.
Even if the main switch (Q1) is turned off, some parts of the electrical system are live.
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