Pfeiffer Vacuum OKTA 2000 ATEX, Operating Instructions Manual

Page: 19 / 64

Max. speed in circulation mode 3600 rpm
Permanent intake pressure in vacuum
mode
depending on max. pressure differential
Max. gas temperature, pressure side
180
℃
Tbl. 7: Permissible ambient conditions
2.6 Proper use
► Only use the vacuum pump to create a vacuum in connection with a suitable backing pump.
► To protect the lubricant, use sealing gas if high boiling or corrosive media (e.g. solvents) are
pumped.
► Adhere to the installation, commissioning, operating, and maintenance instructions.
► Use only accessory parts recommended by Pfeiffer Vacuum.
► 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 (see chapter “Limits of use
of the product”, page 18) 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 38) . 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 improper use; 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 at and above atmospheric pressure
(load lock)
● Use of 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
● Use of 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
● Use of pipes to lift the vacuum pump
● Use of accessories or spare parts not listed in these instructions
● Use of 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 operating lubricant other than that specified by Pfeiffer Vacuum
Safety
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