► Use the vacuum pump to convey potentially explosive atmospheres in accordance with the label-
ing.
► Observe the corresponding safety measures
(see chapter “Safety measures”, page 17)
.
► Operate the vacuum pump within the application limits of the product
and in compliance with the technical data.
– When operating the vacuum pump with frequency converter, make sure that the vacuum
pump never exceeds the max. permissible rotation speed, even in the event that the frequen-
cy converter malfunctions. Increased bearing wear is therefore avoided.
– When operating the vacuum pump with a rotation speed of less than 1500 min
-1
, as can be
the case in “windmilling” operation for example, you must ensure continuous vibration moni-
toring
(see chapter “Vibration monitoring”, page 36)
. Therefore any bearing damage that is
caused by deficient lubrication can be detected in advance.
If this cannot be ensured, you must circumnavigate the vacuum pump by means of a bypass,
until it can be operated with the minimum rotation speed.
2.7 Foreseeable improper use
Improper use of the product invalidates all warranty and liability claims. Any use that is counter to the
purpose of the product, whether intentional or unintentional, is regarded as misuse, in particular:
● Pumping media that can corrode or not be withstood by the vacuum pump materials
Components contained in the suction chamber are cast iron, steel, and stainless steel. Seals are
FPM (alternative seals available on request)
● Pumping media that introduce an ignition source to the suction chamber
● Pumping media that form adhesive deposits inside the suction chamber and cause the pistons to
touch or jam
● Pumping pressurized media (> atmospheric pressure)
● Pumping fluids – the use of fluids is permitted for cleaning purposes
● Pumping radioactive media
● Pumping media prone to spontaneous, specific exothermic reactions
● Use of the vacuum pump for cyclic evacuation procedures above atmospheric pressure (load
lock)
● Using the vacuum pump in systems in which sporadic loads and vibrations or periodic forces act
on the unit
● Using the vacuum pump in strong electrical, magnetic, or electromagnetic fields
● Using the vacuum pump without blocking the overflow valve for pumps with blocked version
● Use of the vacuum pump with open vacuum and/or fore-vacuum flange open to the atmosphere
● Using lubricants not specified by Pfeiffer Vacuum
● Using pipes to lift the vacuum pump
● Use of accessories or spare parts that are not listed in these instructions
● Using the vacuum pump as a climbing aid
● Overcoating the vacuum pump whereby the permissible layer thicknesses in accordance with
DIN EN ISO 80079-36 are exceeded
● Use of mineral-based operating fluids, such as P3, with an oxygen concentration > 21 %
Mineral-based operating fluids are combustible and ignite at high temperatures, and when they
come into contact with pure oxygen. These operating fluids oxidize heavily and thus lose their lu-
bricating capacity.
Safety
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