VACUUBRAND MZ 2C EX +IK+EK - Manual (Page 7)

page 7 of 75
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.: 999128 / 29/04/2014
The inner (pumped media) and outer part of the pump have to be evaluated
separately because of their different conformity (see also section ”Technical
data” and ”Notes regarding devices with ATEX conformity”).
The pumps are not suitable for pumping dust and have no approval for operation
below ground.
The pumps are not suitable for pumping self inflammable substances, for substanc-
es which are inflammable without air and explosive substances.
☞
Electrical and vacuum components might require a separate approval.
☞ Include the components in the recurrent tests of tightness for pressure vessels, in
the case of hits and beats an intermediate leak test is required.
☞ Due to the high compression ratio of the pumps, pressure at the outlet port might
be generated being higher than the max. permitted pressure compatible with the
mechanical stability of the system.
☞ Always provide a free and pressureless exhaust pipeline.
☞ Do not permit any uncontrolled pressurizing (e.g. make sure that the exhaust
pipeline cannot become blocked). If there is an exhaust isolation valve, make sure
that you cannot operate the equipment with the valve closed. Risk of bursting!
• Secure coolant hoses at the hose nozzles (e.g. with hose clip) to prevent their
accidental slipping.
• Comply with maximum permissible pressures at inlet and outlet and pressure
differences, see section ”Technical data”. Do not operate the pump with overpres-
sure at the inlet.
• Attention: Flexible elements tend to shrink when evacuated.
Provide a firm level platform for the equipment and check that the system to be
evacuated is mechanically stable and that all fittings are secure. Ensure a stable po-
sition of the pump without any mechanical contact except of the pump feet. Comply
with all applicable safety regulations.
Pumping units (pumps with vapour condenser) have to be installed protected
against hits from outside and protected against splinters (against implosion).
Adopt suitable measures prior to the first use.
Obey all relevant requirements (regulations and guidelines) and adopt suitable safe-
ty measures.
☞ Pay attention to the max. permitted ambient temperature and make sure
ventilation is adequate especially if pump is installed in a housing or if
ambient temperature is elevated, install an external automatic ventilation
system if necessary.
If pumping hot process gases make sure that the maximum permitted gas inlet
temperature is not exceeded.
☞ 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 work clothing of the user must not lead to electrostatic discharge which may
ignite the explosive atmosphere.
NOTICE