Heidolph ROTAVAC 20 - Manual (Page 8)

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.: 01-005-005-36-1
page 8 of 35 Translation of the original instructions
1.5 Operating conditions
➨ The pumps 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 inflammable substances,
- substances which are
inflammable without air and
- explosive substances.
➨ The pumps have no approval for operation below ground.
+ The pumps are not suitable for pumping dust.
• The pumps 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 excessing the maximum permitted tempera-
tures!
• If there is a danger of formation of deposits in the pump chamber (check inlet
and outlet of the pump), inspect the pump chambers 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 compatible with the
pumped substances, see section ”Technical data”.
If pumping different substances, it is recommended to purge the pump with air
or inert gas prior to changing 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.
1.6 Safety during operation
➨ Adopt suitable measures to prevent the release of dangerous, toxic, explosive,
corrosive, noxious or polluting fluids, vapors and gases. In case install an ap-
propriate collecting and disposal system and take protective action for pump and
environment.
➨ The user must take suitable precautions to prevent any formation of explosive
mixtures in the expansion chamber or at the outlet. In case of e.g. a diaphragm
crack, mechanically generated sparks, hot surfaces or static electricity may ignite
these mixtures. Use inert gas for gas ballast or venting if necessary.
➨ Potentially explosive mixtures at the outlet of the pump have to be drained ap-
propriately, sucked off or diluted with inert gas to non-explosive mixtures.