7 Servicing/Maintenance
38 of 52
Etaline-R
7.4.6 Removing the impeller
ü
The notes and steps stated in
(
ð
Section 7.4.1, Page 36)
to
(
ð
Section 7.4.5, Page 37)
have been observed/carried out.
ü
The back pull-out unit is kept in a clean and level assembly area.
1.
Undo impeller nut 922.4 (right-hand thread).
2.
Remove impeller 230 with an impeller removal device.
3.
Place impeller 230 on a clean and level surface.
4.
Remove key 940.01 from shaft 210.
5.
Sizes 250-250, 250-300, 250-340
: Remove intermediate ring 509.
7.4.7 Removing the mechanical seal
ü
The notes and steps stated in
(
ð
Section 7.4.1, Page 36)
to
(
ð
Section 7.4.6, Page 38)
have been observed/carried out.
ü
The back pull-out unit is kept in a clean and level assembly area.
ü
The impeller has been removed.
1.
Use two pry bars to prise out complete mechanical seal 433 (cartridge design) at
the circumferential groove (see Fig.: Prising out the mechanical seal using pry
bars
Fig. 10:
Prising out the mechanical seal using pry bars
2.
Remove and dispose of gasket 400.04.
7.4.8 Dismantling the bearings
ü
The notes and steps stated in
(
ð
Section 7.4.1, Page 36)
to
(
ð
Section 7.4.7, Page 38)
have been observed/carried out.
ü
The bearing bracket has been placed on a clean and level surface.
1.
Remove contact guard 680.
2.
Undo cover bolts 914.03, remove casing cover 161 and thrower 507 from the
shaft.
3.
Remove circlip 932.02 and press shaft 210 out of the bearing seat towards the
motor.
4.
Remove circlip 932.20 and ring 500.18.
5.
Remove ball bearing 321 from shaft 210 and place on a clean and level surface.
6.
Remove ring 550.21.
7.5 Reassembling the pump set
7.5.1 General information/Safety regulations
WARNING
Improper lifting/moving of heavy assemblies or components
Personal injury and damage to property!
▷
Use suitable transport devices, lifting equipment and lifting tackle to move
heavy assemblies or components.
