Richter RG4 stationary, double - Manual (Page 5)

Series SCK Mechanical seal RG-4, stationary, double, liquid sealed Page 5
9220-064-en Revision 10
TM 7827 Edition 03/2010
Pull the entire rotary ring carrier 483, comprising
the parts rotary ring carrier 485/1 (O-ring 412/5,
thrust ring 474, spring 477/1, and stud 560/1) out
of the seal housing 483.
5.1.2 Dismantling of shaft sleeve
Pull the shaft sleeve 524 with the rotating unit
470/1 which is still installed off the shaft.
For changing the rotating unit, undo the setscrew
904/2 (depending on the design of the shaft
sleeve) and pull it off the shaft sleeve 524.
Observe the operating manual of the mechanical
seal manufacturer.
Remove mating ring 475/2.
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.
5.2 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.
The seal face 472/1 must engage in the studs
560/1. Mark position beforehand.
In the case of the shaft sleeve made of Al
2
O
3
the
rotating unit 470/1 must be flush with the key 940/2
and tightened with the setscrew 904/2. In the case
of the shaft sleeve made of stainless steel the key
is positioned firmly against one end.
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.