Series
SCK,
Mechanical seal RG-4, stationary, double, liquid sealed
Page
3
9220-014-en
Revision 11
TM 7827
Edition 03/2019
2
Safety, transport, storage and disposal
The relevant sections in the adjacent installation and
operating manuals apply to safety, transport and stor-
age.
This installation and operating manual is only valid in
conjunction with the installation and operating manu-
als of
SCK long life grease and oil bath lubrication
9220-050-en
2.1 Intended use
Double mechanical seals for plastic-lined pumps of
the series SCK are suitable for the use of aggressive,
toxic, pure and inflammable media.
The instructions contained in the operating manu-
al or contract documentation must be observed; if
necessary consult the manufacturer.
All 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 instal-
lation and operating manual of SCK series.
The
sectional drawing
shows a stationary, double
mechanical seal RG-4, liquid sealed. See
Section 7
.
All components which come into contact with the
medium are either plastic-lined or made of other
resistant materials, e.g. silicon carbide.
4
Commissioning / Shutdown
4.1 Initial commissioning
See installation and operating manual for the series
SCK.
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 only
mechanical seals may be employed which
permit observation of temperature.
The operating manual of the respective mechanical
seal manufacturer is an integral part of this general
operating manual.
This permits, amongst other things, the calculation of
the expected surface temperature at the mechanical
seal. The suitability for the permissible temperature
class as per ATEX is hereby given.
Caution!
The permissible temperature class of the complete
unit (pump, mechanical seal, coupling, motor) is de-
termined by the lowest temperature class of the indi-
vidual components.
Example: Pump
T4
, mechanical seal
T3
,
coupling
T4
, motor
T4
The unit may only be used in atmospheres which may
ignite above the temperature class T3, i.e. >200 °C.
