Maintenance; Disassembling Pa/F And Removing The Packing Rings - Richter PA/F Series Installation And Operating Manual

Series PA/F, PA/S
9

Maintenance

♦ All repair work is to be performed by qualified per-
sonnel using the appropriate tools.
♦ For the arrangement, designation and item numbers
of all parts of the valve, see Section 10.
♦ Spare parts are to be ordered 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 should be made in line with the operating re-
quirements.
For tightening torques, see Section 1.2.
Make sure that when working on the
sampling valve it is drained.
See also Section 7.4.
9.1 Disassembling PA/F and
removing the packing rings
♦ Undo clip 937 and unscrew bottle connection 226.
♦ Undo groove nut 509. Star grip 963 can remain
screwed in.
♦ Undo spring bonnet 513.
♦ Pull pressure spring 952 from stem 855.
9510-010-en Revision 18
TM 9549 Edition 11/2018
♦ Loosen setscrew 904 in spring bush 514.
♦ Undo spring bush 514.
♦ Undo hex nut 920 with tooth lock washer 936, and
remove seat 205.
♦ Remove cover 106 and the stud screws 902.
♦ Pull out bellows 206 with stem 855 downwards.
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