User manual

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If there should be repeated cases of failure, look for the reason. Any work at the electrical system has to be
carried out by specialized electricians only.
Whenever performing work at the electrical system, disconnect the mains supply plug on principle. When
work at the electrical system is finished, a safety test as per VDE 0701, sections 1 and 3, has to be performed.
Suction turbine require little maintance only;just the carbon brushes must be
checked -renewed-after every 200 service hours.