Richter Mechanical Seals - Manual (Page 3)

Series SCK , mechanical seals with quench Page 3
9220-012-de Revision 01
TM 6478 Edition 04/2006
2 Safety, transport and storage
The relevant sections in the adjacent installation and
operating manuals apply to safety, transport and
storage.
This installation and operating manual is only valid in
conjunction with the installation and operating
manuals of
SCK long-life grease lubrication 9220-050-en
SCK oil bath lubrication
9220-055-en
2.1 Intended use
Single mechanical seals for plastic-lined pumps of the
series SCK are suitable for the use of aggressive and
pure media.
The instructions contained in the operating
manual or contractual documentation are to be
observed, if necessary consult the manufacturer.
All the important features are documented in the data
sheet included in the scope of delivery.
3 Product description
For a product description of the pump, see the
installation and operating manual for the SCK series.
Section 7.1
The sectional drawing shows a stationary, single
mechanical seal RG-4 with quench. Section 7.2
The sectional drawing shows a stationary, single
mechanical seal RG-4 with lip ring and quench.
All components which come into contact with the
process medium are either lined with plastic or are
made of other resistant materials, e.g. silicon carbide.
4 Commissioning / Shutdown
4.1 Initial commissioning
See installation and operating manual for the SCK
series.
4.2 Mechanical seals
The design and material combination are specified in
the data sheet.
The proper condition of the components and
the protective facilities must be ensured to
prevent any risk from escaping medium.
The regulations and recommendations of
the mechanical seal manufacturer must
always be observed.
4.2.1 Use in an explosive area
Use in an explosive area means that ATEX-
compliant mechanical seals must also be
used.
In particular, it is imperative to observe the ATEX
notes in the operating manual of the mechanical seal
manufacturer.
For example, the maximum temperatures of the
medium must be observed, a lack of lubrication of the
mechanical seals avoided etc.
4.2.2 Stationary, single mechanical seal
RG-4, with quench
Design and material combination are specified in the
data sheet.
A pump with a stationary mechanical seal with
quench may only be started up when the quench
system is in operation and the pump is filled with
process medium.
The pressure of the quench fluid must be max. 1 bar.
The admissible pressure for the storage container
must also be observed.
If process water is used for quenching, a flow rate of
approx. 40 l/h should be set. After a running-in phase
of approx. 10 h the flow rate can be reduced so that
the quench fluid emerges heated by about 20°C. A
minimum flow rate of 5 l/h should be maintained.
Are the available connections correctly made?
QE - quench fluid inlet
QA - quench fluid outlet
See also sectional drawing in Section 7.