page 10 of 76
Operating conditions
➨ The devices have no approval for operation in or
for pumping of potentially explosive atmospheres.
➨ The devices are not suitable to pump:
- unstable substances and substances which react
explosively under impact (mechanical stress) and/
or when being exposed to elevated temperatures
without air,
- self inammable substances,
- substances which are inammable without air and
- explosive substance
➨ The pumps have no approval for operation below
ground.
+ The pumps are not suitable for pumping dust.
• The devices are not suitable for pumping substances
which may form deposits inside the pump. Deposits
and condensate in the pump may lead to increased
temperatures even to the point of exceeding the maxi-
mum permitted temperatures! Increased temperatures
may cause ignition of inammable substances that may
have been deposited inside the pump during use.
• If there is a danger of the formation of deposits in the
pump chamber (check inlet and outlet of the pump), in-
spect the pump chamber regularly and clean if neces-
sary.
• Take into consideration interactions and chemical
reactions of the pumped media.
• Ensure that the materials of the wetted parts are com-
patible with the pumped substances, see section ”Tech-
nical data”.
If pumping different substances, it is recommended that
the pump be purged with air or inert gas prior to chang-
ing the pumped media in order to pump out residues and
to avoid reactions of the pumped substances with each
other and with the pump materials.
NOTICE
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