2 | Product Description
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2.1 Operating Principle
The machine works on the rotary vane principle.
The oil seals the gaps, lubricates the vanes and takes away compression heat.
The oil filter cleans the circulating oil.
Exhaust filters separate the oil from the discharged gas.
2.2 Application
The machine is intended for the suction of air and other dry, non-aggressive and non-
toxic gases.
Explosive gases and vapour mixtures can be drawn according to the scope of the Direct-
ive ATEX 2014/34/EU.
Depending on the equipment, the machine is intended for suction of explosive gases
and/or dusts according to the data given on the nameplate of the machine (NP), see Ex-
planation of ATEX Classification [►8].
Conveying of other media leads to an increased thermal and/or mechanical load on the
machine and is permissible only after a consultation with Busch.
The machine is intended for the placement in a potentially explosive environment ac-
cording to the data given on the nameplate of the motor and the nameplate of the ma-
chine (NP), see Explanation of ATEX Classification [►8].
The machine is designed for indoor installation, in case of outdoor installation, ask your
Busch representative in order to take specific precautions.
In case Busch delivered the machine without motor and coupling, the following must be
observed:
• In regards to its explosive atmosphere protection class, the motor and the coup-
ling must have at least the same ATEX classification as the machine for the outside
area “Outside (o)”.
• The motor and the coupling do not require an ATEX certification when the ma-
chine ATEX classification corresponds to “Outside (o) No ATEX zone”.
The machine is capable of maintaining ultimate pressure, see Technical Data [►33].
The machine is suitable for continuous operation.
Permitted environmental conditions, see Technical Data [►33].
2.3 Start Controls
The machine comes without start controls. The control of the machine is to be provided
in the course of installation.
The machine can be optionally equipped with a starter unit or a variable-frequency drive.
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