VACUUBRAND RZ 9 - Manual (Page 26)

page 26 of 49
Installing a pump in a vacuum system
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If dangerous or polluting fluids (e.g., oil mist) could be
released at the outlet, install an appropriate system
(e.g., oil mist separator, see “Accessories”, pg. 36)
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.
• Install a cold trap in front of the pump, if pumping ag-
gressive or corrosive gases or vapors.
Use and operation