161 Casing cover
527 a) Fixing ring
210 Shaft
560 b) Pin
230 Impeller
904.31 a) Set screw
412.21 O-ring
904.32*) Set screw
433 Mech. seal
922 Impeller nut
502.31*) Wear ring
940.31 Key
*) optional
a) not for all designs
b) only for mech. seals with PTFE-O-rings
Nominal size
of mech.
seal
∅
d
1
∅
d
7
l
1K
A
B
∅
d
L
33
33
48
42,5
7,5
50
19
43
43
61
45
7,5
52,5
28
53
53
73
47,5
10
57,5
38
This leaflet is subject to alteration!
10.1.3 Removal of mechanical seal
For that purpose use the appropriate sectional drawing and the enclosed data sheet of the mechanical
seal.
•
Remove and disassemble the pump acc. to the Installation, Operation and Maintenance Instruc-
tions including
7.1.11 Remove the Shaft Sealing on page 36
•
Remove fixing ring (527) (if existing) and rotating part of the mechanical seal (433) from shaft (210).
Refer to the enclosed data sheet of the mechanical seal, if set screws are to be loosened at the
mechanical seal at first.
•
Remove stationary part of the mechanical seal (433) out of the casing cover (161).
Clean drilling for stationary seal rng (
∅
d
7
) in the casing cover (161) and surface of shaft (210).
NOTICE:
The reuse of mechanical seals, which have already been used for a longer time, can lead to
leaking at the seal faces after re-installation. Therefore the replacement of the mechanical seal
through a new one is recommended. The dismounted mechanical seal can be reconditioned by
the manufacturer and serve as a replacement mechanical seal.
10.1.4 Installation of a mechanical seal
For that purpose use the sectional drawing and data sheet of the mechanical seal.
It is only allowed to install mechanical seals, which have a certificate of Conformity acc. the Directive
94/9/EC.
On changing the mechanical seal type resp. the mechanical seal manufacturer the data regarding max.
operating temperature of the pumped medium and temperature class must be checked again.
10.1 Single mech. seal without shaft sleeve (Design code S1..2)
ICB Installation, Operation and Maintenance Instruction
49
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