Richter RG4 stationary, single - Manual (Page 4)

Series SCK, mechanical seal RG-4, stationary, single Page 4
9220-061-en Revision 01
TM 6478 Edition 04/2006
5 Maintenance
The regulations of the mechanical seal
manufacturer must always be observed.
See also the installation and operating manual
for the SCK series.
5.1 Stationary, single mechanical
seal RG-4
In normal operations this seal should not drip. For
safe operations it is advisable to check the attachment
screws of the seal housing for a tight fit from time to
time.
Dismantling can be checked using the sectional
drawings in Section 7.2 and Section 9 in the
installation and operating manual SCK, also the
available components.
5.2 Dismantling of stationary,
single mechanical seal RG-4
Remove the mating ring 475/1 and the flat gasket
400/1.
Remove the back plate (for sequence, see
Sections 4.2.1 and 7.7.4 in the installation and
operating manual SCK) with the completely
mounted stationary mechanical seal unit.
Remove the seal face 472/1 and O-ring 412/3.
Remove drip ring 516 either with the seal face
472/1 or pull out of the rotary ring carrier 485/1 on
its own.
Remove centering ring 511.
Remove seal housing 483. Pull the entire rotary
ring carrier, comprising the rotary ring carrier
485/1, stud 560/1, spring 477/1, thrust ring 474
and O-ring 412/5 out of the seal housing 483.
If plastic bearing points of the mating ring 475 or of
the shaft sleeve 524 are destroyed, they can be
renewed by the pump manufacturer.
5.3 Notes on assembly
Only use original spare parts.
Do not use any defective parts.
The recommendations of the mechanical seal
manufacturer are to be observed.
Bearing pedestal group 3:
Always make sure that when installing the
mechanical seal the labyrinth disc is secured by 2
bolts.
The bolts must be removed again after assembly
of the impeller.
The rotary ring carrier 485/1 must engage in the
spring-type slotted pin 531/1. Mark position
beforehand and check depth.
Press drip ring 516 into seal face 472/1.
The seal face 472/1 must engage in studs 560/1.
Mark position beforehand.
When pushing on the mating ring 475/1, make
sure that the position of the flat section matches
that on the shaft.
6 Faults
Faults may result from inadmissible modes of
operation. Such inadmissible modes of
operation – even brief ones – may cause
serious damage to the unit.
In connection with explosion protection, potential
sources of ignition (overheating, electrostatic and
induced 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 2.1.
Should there be any uncertainty about the remedy to
be applied, please inquire at the in-house pump office
or at the pump manufacturer's.
See also Section 8 in the installation and operating
manual of the SCK series.