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Check vacuum connections for tightness.
Check oil in pump (oil level in view glass; add if necessary. Regular change of oil -
necessity indicated by change of color). Follow Busch maintenance schedule.
Check vacuum in chamber with precision vacuumeter.
Check desiccant filter for proper color, change if necessary.
Check function of cycle with various settings of timers.This board software is
allowing access to a "Diagnostics Menu". Only qualified service technicians are
authorized to access this menu by entering a security password.
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