Richter KSEA/F Series Safety Valves - Manual (Page 16)

Series KSEA/F
Page 16
9530-052-en Revision 03
TM 7128 Edition 05/2008
Fig. 17
In order to lift the plug 204 off the seat 205, raise
the entire spindle.
Undo adjusting screw 538 and turn it out of the
spring bonnet 513.
When undoing the adjusting screw 538, hold the
spindle with a wrench on the counter nut so that
the bellows 206 or the spring-type pin 939/1 are
not damaged. See Fig. 18.
Fig. 18
Unscrew hex. socket screw 914/1 off the pressure
ring 124.
Clean and grease the two threaded rods (approx.
6” (150 mm) long / 180° offset).
Undo hex. nuts 920/2 to attach the spring bonnet
513 and thrust flange 117.
Remove complete upper section.
Press the bellows collar out of the guide of the
thrust flanges and then screw the bellows 206 off
the spindle 802.
Assemble the entire upper section (without
bellows) again with the body 100.
Screw hex. nut onto the threaded rod (up to flange
contact with spring bonnet 513).
Screw hex. nuts onto both ends of the threaded
rods and counter with more hex. nuts.
Tighten adjusting screw 538 (turn into the spring
bonnet 513) until the spacer sleeve is loose.
Undo hex. nuts at the end of the spindle and also
remove spacer sleeve.
Undo adjusting screw 538 and screw it out of the
spring bonnet 513.
The pressure spring 952/1 is only partially
relieved in this situation.
In order to completely relieve the spring, the two
nuts per threaded rod are evenly turned upwards
until the spring bonnet is loose.
It is imperative to secure the threaded
rods against turning (turning out of the
body flange) with a wrench on the
counter nut – Risk of accident!
See Fig. 19.
Fig. 19
The KSEA/F can now be further dismantled. See
relevant Sections in 9.4 to 9.6.
9.8 Assembly KSEA/F 100/150
Assembly the complete upper section with its
internals without the bellows 206, plug 204 and
lifting aid 237.
Grease the outside thread of the adjusting screw
and the inside thread in the spring bonnet (for
adjusting screw) well and, if difficult to screw, also
spray with torsion spray.
Mount a hex. nut on the free end of the spindle so
that when the complete unit is raised the internals
are held and they do not fall down. See Fig. 20.
Fig. 20