Richter MNK Series - Manual (Page 6)

Series MNK 200-150-315
Page 6
9230-053-en Revision 12
TM 8195 Edition 03/2011
In the event of operating conditions other than those
described in the data sheet, the following are to be
checked again:
design of the pump
design of the accessories
resistance of the materials.
2.2 For the customer/operator
The following must be observed:
The notes on safety contained in this operating
manual,
The prevailing regulations on accident prevention,
In-house work, operating and safety regulations of
the customer.
Hot or cold machine parts must be protected by
the customer against being touched.
No protective facilities may be removed when the
machine is in operation.
Hazards due to electricity are to be excluded.
Leaks of hazardous media (e.g. explosive, toxic,
hot) must be removed so that no risk arises for
people and the environment. The statutory
provisions are to be observed.
Caution when using the units in potentially
explosive area!
Inadmissible modes of operation must be
prevented.
2.3 For maintenance
In principle, work on the unit may only be performed
when it is at a standstill.
It is imperative to observe the procedure for stopping
the machine described in this operating manual. See
Section 6.3.
Pumps which convey media which are a health
hazard must be decontaminated.
Directly on completion of the work all safety and
protective facilities must be mounted and activated
again.
In the assembled state, if the safety notes (see also
Section 5.1 and 7.5.2) are observed, the magnetic
drives do not cause any risks or have any affect on
the environment.
During dismantling and assembly as well as
during transport and storage of the magnetic
drives as single components, the notes on
safety in Section 7.5.2 must be observed.
The points listed in Section 6.1 must be followed
before recommissioning.
2.4 Conversion work and
production of spare parts by
the customer
Conversion of or changes to the machine are only
admissible after consultation with the manufacturer.
Original spare parts and accessories authorised by
the manufacturer serve to enhance safety.
The use of other parts may annul the liability for any
resultant consequences.
2.5 Improper operation
The operational safety of the machine supplied is only
guaranteed if it is used properly in accordance with
Section 2.1 of this operating manual.
The operating limits specified in the data sheet must
under no circumstances be exceeded.
2.6 Special requirements for
explosion protection
If the units are used in potentially explosive areas, the
measures and notes in Sections 2.6.1 to 2.6.9 are
imperative to guarantee the explosion protection.
2.6.1 Filling the unit
During pump operation the wetted interior of
the pump must always be filled with the liquid
medium.
This prevents any explosive atmosphere and the risk
of dry-running.
If the customer cannot ensure this, we
recommend that appropriate monitoring
facilities be provided.
All auxiliary, heating and cooling systems
must also be carefully filled.
2.6.2 Special operating conditions
In the standard version the plain bearings are
lubricated and cooled by the internal flushing
circuit.
Owing to properties of the medium (e.g. sticking due
to inadmissible solids entrainment, clogging, gas
entrainment etc.) the cooling flow can be interrupted
and, as a result, an inadmissible temperature rise may
occur. Provide appropriate monitoring facilities. See
Section 5.6.
For safe pump operation, we recommend a flow rate
of 0.3 to 1.1 Q
opt
. If the pump is operated outside this
range, it must be ensured that the max. admissible
flow rate according to the pump characteristic curve is
not exceeded and that the max. admissible operating
temperature according to Section 2.6.7 is observed.