Table of Contents
Advertisement
Series RSS/F
9
Maintenance
♦ All repair work is to be performed by qualified
personnel using the appropriate tools.
♦ For the arrangement, designation and item
numbers of all parts of the valve, see
♦ Order spare parts with all the details in acc. with
the valve identification.
♦ Only original spare parts may be installed.
♦ The maintenance staff can decide whether the
valve is dismantled from the pipe or not for
maintenance work.
In both cases Section 7.3 is to be observed.
♦ It is also up to the maintenance staff to decide
whether the actuator or other accessories are
dismantled for the maintenance work.
♦
Section 9.4
is to be observed for re-assembly of
the actuator.
♦ To prevent leaks, a regular check of the connec-
tion screws make in line with the operating re-
quirements.
For tightening torques, see Section 1.3.
9.1
Setting the travel stop
To ensure the valve closes tight, a distance between
the travel stop 508 and cover 106 must be observed:
DN 15 - 50 (½".– 2")
DN 65 - 150 (2½" – 6") :
If these distances are not correct, the travel stop must
be reset:
♦ Close valve.
♦ Remove protection bellows
♦ Move travel stop
508
♦ Tighten lock nut
920/3
9560-010-en
Revision 19
TM 10477
Edition
05/2022
Section 10
Fig. 1
:
0.5 mm
1.0 mm
687
.
to the correct distance.
.
9.2
Dismantling
9.2.1 Maintenance of the upper section
.
This mainly involves the following work:
♦ Replacing the plug
♦ Replacing the bellows
♦ Inspecting the metal parts of the upper section
and replacing them if necessary.
The entire dismantling and assembly procedure is
described below. If only partial assembly is required,
this can be derived from the text.
9.2.2 Dismantling plug
♦ Move plug
204
850
is mounted.
♦ Remove cover nuts and screws
1x936/2
and
1x936/2
920/1
,
♦ Pull cover
106
♦ Remove protective bellows
and packing nut
♦ Remove valve stem
204
plug
below.
♦ Clamp valve stem
jaws.
♦ Pull round cord 522 out of the plug 204 with a pair
of pliers.
♦ Unscrew plug 204 by hand or with a strap wrench.
Right-hand thread.
♦ Unscrew bellows
Right-hand thread
wrench.
With the heavy-duty bellows do not remove the
support rings 231 and the support disc 232.
9.2.3 Replace packing rings.
♦ Only replace packing rings 402/1 and thrust ring
405 when necessary.
♦ Only remove guide rings
sharp tool, e.g. scribing iron or screwdriver.
♦
With DN 80 und DN 100 (3" and 4"): only remove
guide 801 if necessary.
the stuffing box using a press.
Check to see whether the seat 205 is still ok.
If not: replace. See Section 9.3.
204
.
206
.
into open position if the actuator
901/1
(DN 100 (4")
920/2
902/2
920/2
and
).
vertically out of the body
687
, travel stop
404
.
800
206
with bellows
800
in a vice with protective
206
by hand or with a strap
.
302
if necessary. Use a
Press in the direction of
Page 16
1x936/1
,
,
1x936/1
,
,
100
.
508
and
Advertisement
Table of Contents
