Labconco VACUUBRAND Diaphragm Pump 7393000 User Manual
Page 16
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unstable substances
- substances which react explosively under
impact
(mechanical stress) without air
- substances which react explosively when being ex-
posed to
elevated temperatures without air,
- substances subject to
auto-ignition,
- substances which are
inflammable without air
-
explosive substances.
➨
The pumps are
not approved for operation below
ground.
Do not operate the pump below ground.
+
The pumps are
not suitable for pumping dust.
Do not pump dust.
•
Do not pump substances which may form deposits in-
side the pump. The pumps are not suitable for pumping
substances which may form deposits inside the pump.
Deposits and condensate in the pump may lead to in-
creased temperatures even to the point of exceeding
the maximum permitted temperatures.
• Check the inlet and outlet of the pump, if there is a dan-
ger 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 ”Replacing
diaphragms and valves”, pg. 52). 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. 24.
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.