Installation
17
5.4.2
Installation of ISO-K flange with ISO-F flange
The connection types for installation of ISO-K to ISO-F flange are "hex screw and thread-
ed hole," "stud screw and threaded hole," and "stud screw and through hole".
For the installation the following components are exclusively authorized:
●
the valid mounting kit of the Pfeiffer Vacuum accessories programme
●
mounting materials including protection screen or splinter shield are optionally avail-
able
Hexagon screw and threaded hole
Mind that the sealing surfaces are not damaged.
1) Put the collar flange over the high vacuum flange of the turbopump.
2) Insert the retaining ring into the groove of the high vacuum flange.
3) Fasten the turbo pump with collar flange and centering ring to the counter flange as
shown in the graphic.
4) Use the required number of
8
hex screws with washer.
5) Screw hex screws 1.5 x d into the threaded holes.
– The tensile strength of the flange material must be at least 270 N/mm
2
in all oper-
ating conditions.
6) Tighten the hex screws crosswise in three steps.
7) Tightening torque DN 160: 5, 10, 16 ± 1 Nm
Stud screw and threaded hole
Mind that the sealing surfaces are not damaged.
1) Use the required number of
8
stud screws and nuts.
2) Screw in the stud screws with the shorter threaded end 2.5 x d in the bore holes on
the counter flange.
3) Put the collar flange over the high vacuum flange of the turbopump.
4) Insert the retaining ring into the groove of the high vacuum flange.
5) Fasten the turbo pump with collar flange and centering ring to the counter flange as
shown in the graphic.
6) Tighten the nuts crosswise in three steps.
7) Tightening torque DN 160: 5, 10, 16 ± 1 Nm
Stud screw and through hole
Mind that the sealing surfaces are not damaged.
1) Put the collar flange over the high vacuum flange of the turbopump.
2) Insert the retaining ring into the groove of the high vacuum flange.
3) Fasten the turbo pump with collar flange and centering ring to the counter flange as
shown in the graphic.
4) Use the required number of
8
stud screws and nuts.
5) Tighten the nuts crosswise in three steps.
6) Tightening torque DN 160: 5, 10, 16 ± 1 Nm
1.5xd
2.5xd
