Installation
15
Stud screw and blind hole
Mind that the sealing surfaces are not damaged.
Connect the flanges according to the drawing and with the component parts of the
mounting kit.
Use the required number of
12
stud screws and nuts.
For a flange material with a strength of 170 - 270 N/mm
2
screw in the hex screw 2.5 d
into the blind hole.
Tighten the nuts crosswise in three steps.
Tightening torque DN 200: 10, 20, 38 ± 3 Nm
Stud screw and through hole
Mind that the sealing surfaces are not damaged.
Connect the flanges according to the drawing and with the component parts of the
mounting kit.
Use the required number of
12
stud screws and nuts.
Tighten the nuts crosswise in three steps.
Tightening torque DN 200: 10, 20, 38 ± 3 Nm
Installation of CF-
flanges
The connection types for installation of CF to CF flange are "stud screw and blind hole"
as well as "hex screw and through hole". The following elements are required:
●
the valid mounting kit of the Pfeiffer Vacuum accessories programme
●
A copper seal
●
protection screen or splinter shield are optionally
Stud screw and blind hole
If used: Insert protective screen or splinter shield with the clamping lugs downward
into the high vacuum flange of the turbopump.
Place the seal exactly in the hollow.
Connect the flange using
24
stud screws (M8) with washers and nuts and tighten cir-
cularly with a torque of 22 ±2 Nm. After this, check the torque, since flowing of the
sealing material may make it necessary to tighten the screws.
Hexagon screw and through hole
If used: Insert protective screen or splinter shield with the clamping lugs downward
into the high vacuum flange of the turbopump.
Place the seal exactly in the hollow.
Connect the flange using
24
hex screws (M8) with washers and nuts and tighten cir-
cularly with a torque of 22 ±2 Nm. After this, check the torque, since flowing of the
sealing material may make it necessary to tighten the screws.
2.5d
NOTICE
Preservation of sealing capacity
Observe the following to preserve sealing capacity:
Touch seals only with gloves.
Make sure sealing lips are undamaged.
