Richter SCK-S - Manual (Page 10)

Series MNK-S, MNK-SB, SCK-S, “Self-priming“ design Page 10
9230-062-en Revision 02
TM 6566 Edition 08/2006
6.5.5 Inlet ring
The inlet ring 131 can be removed either during dis-
mantling of the volute housing 102 or after removal of
the feed elbow 139. In the latter case it can be pulled
off the volute housing 102 together with the stud
560/2 through the large opening in the pump housing
101.
6.5.6 Discharge pipe
In order to remove the discharge pipe 711 from the
pump, the pipe on the discharge side must be dis-
mantled. The discharge pipe can then be pulled up
and out.
6.5.7 Storage of the components
If dismantling is not followed by re-assembly, the plas-
tic and ceramic components in particular are to be
carefully stored. The ceramic components are rela-
tively sensitive to breakage; as regards the plastic
components, the soft sealing surfaces in particular are
to be protected.
6.6 Assembly
For assembly, the instructions on dismantling in
Section 6.5 are to be observed in reverse se-
quence.
During assembly good mechanical engineering prac-
tice is to be observed.
Only original spare parts are to be used.
Close-tolerance areas, screws and cup springs are
to be treated with a rust-inhibiting grease.
After the plant has been started up (especially under
a temperature load), the tightening torques must be
checked and the correct values reset. For tightening
torques, see Section 1.2.
Under critical application conditions, such as high
temperatures and large temperature fluctuations, the
tightening torques must be checked at regular inter-
vals.
7 Faults
Faults may result from inadmissible modes of
operation. Such inadmissible modes of opera-
tion – even brief ones – may cause serious
damage to the unit.
In connection with explosion protection, potential
sources of ignition (overheating, electrostatic and in-
duced charges, mechanical and electric sparks) can
result from these inadmissible modes of operation;
their occurrence can only be prevented by adhering to
the intended use.
See also Section 5.4.
Should there be any uncertainty about the remedy to
be applied, please inquire at your in-house pump of-
fice or at the pump manufacturer's.
This operating manual only deals with faults which are
particularly related to the "self-priming" design.
General troubleshooting notes are contained in the
installation and operating manuals of the respective
pump types MNK, MNK-B or SCK.
Pump does not prime itself:
Is the pump filled with at least 17 litres of me-
dium?
Is the suction line leaking?
Is any shut-off valve installed in the suction side
not fully open or is the cross section of the suc-
tion line reduced elsewhere?.
Have solids collected in the pump housing and
are clogging the valve seat?
Has the medium become too hot and is evaporat-
ing in the pump?
Have the installation and start-up instructions
been observed?