vacuubrand MD 4C NT, Instructions For Use Manual

Page: 18 / 80

page 18 of 80
• Check the inlet and outlet of the pump, if there is a
danger of forming deposits inside the pump, e.g., in
the pump chambers (the pump chamber is the part
between diaphragm and head cover. See section ”Re-
placing diaphragms and valves”, pg. 54). Inspect the
pump chambers regularly and clean if necessary.
• Consider interactions and chemical reactions of
the pumped media. Ensure that the materials of the
pump’s wetted parts are compatible with the pumped
substances, see section ”Technical data”, pg. 26.
When changing the substances pumped, we recom-
mend purging the pump with air or inert gas prior to
changing the pumped media. Purging the pump will
pump out residues and it will reduce the possibility of
reactions of the pumped substances with each other
and with the pump’s materials.
Safety during operation
➨
Adopt suitable measures to prevent the release of dan-
gerous, toxic, explosive, corrosive, noxious or pollut-
ing fluids, vapors and gases. To prevent any emission
of such substances from the pump outlet, install an
appropriate collecting and disposal system and take
protective action for pump and environment.
➨
You must take suitable precautions to prevent any for-
mation of explosive mixtures in the pump chamber or
at the outlet of the pump. In case, e.g., of a diaphragm
failure, mechanically generated sparks, hot surfaces
or static electricity may ignite these mixtures. Use inert
gas for gas ballast or venting, if necessary.
➨
Drain appropriately or otherwise remove any poten-
tially explosive mixtures at the outlet of the pump, or
dilute them to non-explosive concentrations.
➨
Never operate this pump if it has a damaged cord or
plug.