Pfeiffer Vacuum ACP 28 CP, Руководство по эксплуатации

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4. Check that the inlet pressure is not higher than atmospheric pressure. If the pressure is too high, it
can damage the product.
5. Check that the ambient temperature is well within the permitted operating range.
6. Check the exhaust line during pumping to prevent the risks related to excess overpressure.
6.2 Matrix gas/applications
You are advised to use the appropriate pump version according to the applications and the nature of the
gases pumped and apply the usual precautions to guarantee the reliability and safety of the procedure.
► Ensure that the gases pumped are compatible with the various materials (see chapter “Environ-
mental conditions”).
Type of gas or vapor pumped Recommended
equipment Actions/Monitoring to be
done Minimum ACP configuration ac-
cording to versions
SD G CV
Neutral or
inert gas Air, nitrogen,
CO2, noble gas
or permanently
non-reactive gas None ● See use of gas ballast
for purging.
Gas bal-
last
closed - -
Gas con-
taining con-
densable
vapor
● Cyclic pump-
ing of volume
● Pumping
large vol-
umes
● Presence of
degassing
material:
plastic, elas-
tomer, poly-
mer, etc.
● Drying
Avoid conden-
sation which re-
duces the per-
formance and
reliability of the
pump
● Before and after pump-
ing on the installation, al-
low the pump to run for 1
hour at ultimate pressure
with the gas ballast open
(inlet closed).
Gas bal-
last open - Gas bal-
last open
Reactive
and/or cor-
rosive gas
excluding
halogens
(F
2
, CL
2
,
Br
2
, I
2
)
Pumping reactive
gas:
● Oxidizing
● Base
● Acid
Dilute the corro-
sive gas to re-
duce its activity.
Connect the
gas ballast to a
neutral gas
source. ● Dilute the gas to lower its
concentration and avoid
any condensation.
● Use the purge.
● Avoid excess pressure at
the exhaust.
● Check that the pump ma-
terials and their sealing
are compatible with the
pumped vapors.
- Purge
open Purge
open +
gas bal-
last open
Operation
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