BUSCH MINK MM 1102 BV, Instruction Manual

Page: 5 / 56

MM 1104, 1144, 1102, 1142 B V ATEX-Version, Gas Tight
0870141675 /
190709
page 5
Apart from this:
Aspiration of ambient air from a zone 1 or a zone 2 (potentially
explosive gas atmospheres) is permitted only if the vacuum pump is
approved for the conveyance of these gases. It is recommended to
install an ATEX-air filter (with equipotential bonding) upstream the
vacuum relief valve/ ambient air valve.
Aspiration of ambient air from a zone 21 or a zone 22 (potentially
explosive dust/air atmospheres) is permitted only if an ATEX-air filter
(with equipotential bonding) is installed upstream the vacuum relief
valve/ ambient air valve.
Aspiration of ambient air from areas not classified as potentially
explosive is permitted. It is recommended to install an air filter
upstream the vacuum relief valve/ ambient air valve.
Principle of Operation
The vacuum pump works on the claw principle.
The components are dimensioned such, that on the one hand there
is never contact between the two claws or between a claw and the
cylinder, on the other hand the gaps are small enough to keep the
clearance loss between the chambers low.
In order to avoid the suction of solids, the vacuum pump is equipped
with a screen in the suction connection.
In order to avoid reverse rotation after switching off, the vacuum
pump is equipped with a non-return valve (v).
The vacuum pump compresses the inlet gas absolutely oil-free. A
lubrication of the pump chamber is neither necessary nor allowed.
Cooling
The vacuum pump is cooled by
−
radiation of heat from the surface of the vacuum pump
−
the air flow from the fan wheel of the drive motor
−
the process gas
−
the air flow from the fan wheel on the shaft of the vacuum
pump
Start Controls
The vacuum pump comes without start controls. The control of the
vacuum pump is to be provided in the course of installation.
Safety
Intended Use
Definition: For the purpose of these instructions, “handling” the
vacuum pump means the transport, storage, installation,
commissioning, influence on operating conditions, maintenance,
troubleshooting and overhaul of the vacuum.
The vacuum pump is intended for industrial use. It shall be handled
only by qualified personnel.
The allowed media and operational limits (
➔
➔ ➔
➔
page 3: Product
Description) and the installation prerequisites (
➔ ➔ ➔ ➔
page 6:
Installation Prerequisites) of the vacuum pump shall be
observed both by the manufacturer of the machinery into which
the vacuum pump is to be incorporated and by the operator.
The maintenance instructions shall be observed.
In particular the intended use in potentially explosive areas, i.e.
either inside the vacuum pump or in its adjacency potentially
explosive atmosphere can occur, requires that the vacuum pump is
equipped accordingly and carries the Ex-mark and that the
associated documentation acc. to the directive
2014/34/EU
is
available.
Prior to handling the vacuum pump these installation and
operating instructions shall be read and understood. If
anything remains to be clarified please contact your Busch
representative!
Safety Notes
The vacuum pump has been designed and manufactured according
to state-of-the-art methods. Nevertheless, residual risks may
remain. These operating instructions highlight potential hazards
where appropriate. Safety notes are tagged with one of the
keywords DANGER, WARNING and CAUTION as follows:
Noise Emission
For the sound pressure level in free field according to EN ISO 2151
➔
page 55: Technical Data.
WARNING
By means of the vacuum relief valve/ ambient air valve the
process gas gets usually mixed with ambient air, with the
mixing ratio depending on the current working pressure of
the vacuum pump.
For certain process gases the mixing with air increases the
explosion risk because of the oxygen contained herein.
So the vacuum relief valve/ ambient air valve must be
considered when the zone inside the vacuum pump is
being established.
If the mixing of process gas and ambient air created an
illegal zone inside the vacuum pump, feeding of ambient air
would not be allowed. In this case an inert dry gas must be
fed.
DANGER
Disregard of this safety note will always lead to accidents
with fatal or serious injuries.
WARNING
Disregard of this safety note may lead to accidents with
fatal or serious injuries.
CAUTION
Disregard of this safety note may lead to accidents with minor
injuries or property damage.
CAUTION
The vacuum pump emits noise of high intensity in a narrow
band.
Risk of damage to the hearing.
Persons staying in the vicinity of a non noise insulated vacuum
pump over extended periods shall wear ear protection.