Richter RSS/F Series, Инструкция по установке и эксплуатации

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Series RSS/F
Page 16
9560-010-en Revision 19
TM 10477 Edition 05/2022
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
Section 10
.
♦
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
Fig. 1
To ensure the valve closes tight, a distance between
the travel stop
508 and cover 106 must be observed:
DN 15 -
50 (½“.– 2“)
: 0.5 mm
DN 65 -
150 (2½“ – 6“)
: 1.0 mm
If these distances are not correct, the travel stop must
be reset:
♦
Close valve.
♦
Remove protection bellows
687
.
♦
Move travel stop
508
to the correct distance.
♦
Tighten lock nut
920/3
.
9.2 Dismantling
9.2.1 Maintenance of the upper section
This mainly involves the following work:
♦
Replacing the plug
204
.
♦
Replacing the bellows
206
.
♦
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
into open position if the actuator
850
is mounted.
♦
Remove cover nuts and screws
901/1
,
1x936/1
,
1x936/2
and
920/2
(DN 100 (4“)
902/2
,
1x936/1
,
1x936/2
,
920/1
and
920/2
).
♦
Pull cover
106
vertically out of the body
100
.
♦
Remove protective bellows
687
, travel stop
508
and packing nut
404
.
♦
Remove valve stem
800
with bellows
206
and
plug
204
below.
♦
Clamp valve stem
800
in a vice with protective
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
206
by hand or with a strap
wrench.
Right-hand thread
.
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
302
if necessary. Use a
sharp tool, e.g. scribing iron or screwdriver.
♦
With DN 80 und DN 100 (3“ and 4“): only remove
guide 801 if necessary.
Press in the direction of
the stuffing box using a press.
Check to see whether the seat
205 is still ok.
If not: replace. See Section 9.3 .