Richter KN-D/F Series, Инструкция по установке и эксплуатации

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Series KN/F, KNP/F, KN-D/F, KNP-D/F
Page 12
9520-050-en Revision 18
TM 9818 Edition 11/2018
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.
♦ To prevent leaks, a regular check of the connection
screws make in line with the operating require-
ments.
For tightening torques, see section 1.3 .
9.1 Dismantling ball valve with
ball/stem unit
9.1.1 Ball valve with lever
♦ Remove lever 203 .
♦ Take out grounding spring washer 557 .
♦ Dismantle packing gland follower 503 and spring
gland follower 502 .
♦ The thrust ring 405/1 , packing bellows 403 and
retaining washer
526
(not in DN 150, 200/150 and
200) are one unit and it is levered out using 2
screwdrivers.
♦ Undo screw connection body end piece 102 / main
body 101 .
♦ Remove body end piece 102 .
♦ (Only DN200) Carefully slide the mounting sleeve
(see section 1.2 ) up to the stop into the shaft
passage of the main body.
.
♦ Remove ball/stem unit 201 in closed position.
Make sure that you do not damage the body lining.
♦ (Only DN200) Carefully slide out the mounting
sleeve.
♦ Remove seat rings 401 .
9.1.2 Packing bellows
♦ Remove retaining washer
526
.
♦ Separate thrust ring 405/1 and packing bellows
403 by pushing them apart.
9.1.3 Ball valve with actuator
♦ Remove actuator 850 and coupling 804 .
♦ Dismantle packing gland follower 503 and spring
gland follower 502 .
♦ Remove bracket 510 .
Further dismantling is performed as described in
Section 9.1.1 and 9.1.2 .
9.2 Assembly
♦ Prior to assembly all parts are to be cleaned and
the plastic-lined parts checked for damage.
♦ Insert seat rings 401 in the main body 101 and
body end piece
102
.
♦ (Only DN200) Carefully slide the mounting sleeve
(see section 1.2 ) up to the stop into the shaft
passage of the main body.
♦ Mount ball/stem unit 201 in closed position. Make
sure that you do not damage the body lining.
NOTE: An additional bore in the ball/stem unit, e.g.
to ensure it is cavity-free, must lie on the p1 side in
the closed position.
♦ (Only DN200) Carefully slide out the mounting
sleeve.
♦ Mount body end piece 102 . Tighten the greased
housing screws cross over with a tightening torque
according to section 1.3 .