VACUUBRAND MV 10 NT VARIO - Manual (Page 18)

page 18 of 126
➨
Pumps without the
”
`
”
mark on the rating plate are
not approved for the pumping of potentially explo-
sive atmospheres. Do not pump potentially explo-
sive atmospheres with those pumps
➨
Pumps bearing the
”
`
”
mark on their rating plates
are approved for the pumping of potentially explo-
sive atmospheres according to their classification
II 3G IIC T3 X according to ATEX, but they are not
approved for operation in potentially explosive at-
mospheres (see section “
`
Important information:
Equipment marking (ATEX)”, pg. 24) .
➨
The pumps are not suitable to pump any of the sub-
stances listed below.
Do not pump:
- 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.
• Do not pump substances which may form depos-
its inside 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 increased temperatures even to the point of
exceeding the maximum permitted temperatures.
• 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. 91). Inspect the
pump chambers regularly and clean if necessary.