VACUUBRAND MZ 2C NT VARIO without controller (o.C.) - Manual (Page 36)

page 36 of 76
Installing a pump in a vacuum system
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If dangerous or polluting fluids could be released at
the outlet, install an appropriate system to catch and
dispose of those fluids.
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Connect a gas-tight exhaust line at the pump outlet if
necessary. Always vent exhaust gases appropriately
(e.g., into a fume hood).
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Never block the gas outlet. The exhaust line must al-
ways be free of obstructions (no back pressure) to en-
sure an unimpeded discharge of gas. The cross-sec-
tion of the outlet tubing must be at least the size of the
pump’s exhaust connection.
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Particles and dust must not be aspirated. If necessary,
you must install appropriate filters. You must ensure
their suitability concerning gas flow, chemical resis-
tance and resistance to clogging prior to use.
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Make sure ventilation is adequate, especially if the pump
is installed in an enclosure, or if the ambient tempera-
ture is elevated. Provide external ventilation, if neces-
sary.
• Reduce the transmission of vibration. Prevent mechan-
ical load due to rigid pipelines. Insert elastic hoses or
flexible elements as couplings between the pump and
rigid pipes.
Note: Flexible elements will compress or flatten when
evacuated if not designed for use under vacuum.
• Hose connections at the pump inlet must always be
gas tight.
• A power failure may cause accidental ventilation of the
pump, especially if the gas ballast valve is open. If this
constitutes a potential source of danger, take appropri-
ate safety measures.
Use and operation