VACUUBRAND BVC 21 NT VARIO - Manual (Page 5)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999157 / 10/12/2009
page 5 of 31
☞ Do not permit any uncontrolled pressurizing (e.g. make sure that an exhaust
pipeline cannot become blocked). Risk of bursting!
☞ Due to the high compression ratio of the pumps, pressure at the outlet port might
be generated being higher than the maximum permissible pressure compatible
with the mechanical stability of the system.
☞ Always provide a free and pressureless exhaust pipeline.
• Comply with maximum permissible pressures and pressure differences, see
section ”Technical data”. Do not operate the pumping unit with overpressure at
the inlet or outlet.
• Check that mains voltage and current conform with the equipment (see rating
plate).
• Avoid overpressure of more than 0.2 bar in case inert gas is connected.
Provide a firm level platform for the equipment. Ensure a stable position of the pump
without any mechanical contact except of the pump feet. Comply with all applicable
safety regulations.
Install an external automatic ventilation system if necessary. Keep a distance of
minimum 20 cm between fan and ambient parts (e.g. housing, walls, ...). Check fan
regularly for dust/dirt, clean if necessary to avoid a cutback of ventilation. Avoid high
heat supply (e. g. due to hot process gases).
If the equipment is brought from cold environment into a room for operation, allow
the equipment to warm up (pay attention to water condensation on cold surfaces).
The diameter of the an outlet pipeline should be at the least as large as the diameter
of the pump connections.
Comply with all applicable and relevant safety requirements (regulations and
guidelines), implement the required actions and adopt suitable safety meas-
ures.
For aspiration of liquids connect the system BVC 01 to a suitable vacuum supply.
Ambient conditions
To the best of our knowledge the equipment is in compliance with the requirements
of the applicable EC-directives and harmonized standards (see ”Declaration of con-
formity”) with regard to design, type and model, especially directive IEC 1010. This
directive gives in detail conditions, under which the equipment can be operated safe-
ly (see also IP degree of protection).
Adopt suitable measures in case of differences, e. g. using the equipment outdoors,
installation in altitudes of more than 1000 m above mean sea level, conductive pol-
lution or bedewing.
Pay attention to the permissible maximum ambient temperatures (see ”Technical
data”).
Operating conditions
➨ The devices have no approval for operation in or for pumping of potentially
explosive atmospheres.
NOTICE
NOTICE