page 40 of 80
Installing a pump in a vacuum system
➨
If dangerous or polluting fluids could be released at
the outlet, install an appropriate system to catch and
dispose of those fluids.
+
Connect a gas-tight exhaust line at the pump outlet
nozzle and secure against loosening, for example,
with a hose clamp. Always vent exhaust gases appro-
priately (e.g., into a fume hood).
+
Never block or restrict the gas outlet. The exhaust line
must always be free of obstructions (no back pressure)
to ensure an unimpeded discharge of gas. The cross-
section of the outlet tubing must be at least the size of
the pump’s exhaust connection.
+
Particles and dust must not enter the pump. If nec-
essary, you must install appropriate filters. You must
ensure their suitability concerning gas flow, chemical
resistance and resistance to clogging prior to use.
+
Make sure ventilation is adequate, especially if the pump
is installed in an enclosure, or if the ambient temperature
is elevated. Provide external ventilation, if necessary.
• 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 and secured against loosening, for example,
with a hose clamp.
• 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
Summary of Contents for MD 4C NT
Page 32: ...page 32 of 80 ME 4C NT 1 5 4 7 6 8 2 ME 2C NT 1 5 4 7 6 8 2 ...
Page 34: ...page 34 of 80 ME 8C NT MD 4C NT 1 5 3 4 7 6 2 8 8 5 4 7 6 1 2 ...
Page 73: ...page 73 of 80 Declarations and certificates ...
Page 74: ...page 74 of 80 ...
Page 78: ...page 78 of 80 ...
Page 79: ...page 79 of 80 ...
