3. Slide the complete rotating assembly onto the shaft protecting sleeve. Observe
the installation dimension given in the installation drawing of the mechanical
seal or slide it further until it abuts against the spacer sleeve. Then tighten the
grub screws firmly and secure them with LOCTITE.
4. Insert the mating ring with the corresponding O-ring into the seal cover (see
general assembly drawing). A lubricant can be applied to the O-ring. Press it in
evenly. Make sure the contact faces are dry.
5. Fit seal cover 471 with the mating ring.
7.5.2.2 Fitting the gland packing
✓ The gland packing chamber is clean and free from any packing residues.
✓ The shaft protecting sleeve has a bright metal surface which is free from score
marks. If required, the shaft protecting sleeve has been replaced.
1. Slide shaft seal housing 441 onto shaft protecting sleeve 524.1.
2. Use stuffing box insert 455 to tamp down the individual packing rings in the
gland packing chamber. Insert subsequent packing rings one at a time, with
their joints staggered at 90°-180°. Refer to the general assembly drawing for
the number of rings and the position of neck ring 457 or lantern ring 458, if
applicable. Preferably use compression-moulded packing rings.
3. Position gland follower 452 and tighten it lightly to allow the packing rings in
the gland packing chamber to adjust.
4. Loosen the gland follower to relieve the load on the packing.
7.5.2.3
Installing the bearings
WARNING
Components heated up for installation
Risk of burns to hands!
▷ Wear protective gloves suitable for installation work.
▷ Let components cool down after installation.
Installing the drive end bearings
✓ The impeller has been fitted.
✓ The shaft seal has been fitted.
✓ The corresponding general assembly drawing and installation instructions are
available.
1. Slide bearing cover 360 with inserted lip seal 421.02 (for ATEX-version labyrinth
ring 423.02) on shaft protecting sleeve 524.
2. Heat up deep groove ball bearing 321 and pull it onto pump shaft 211. Take
utmost care to prevent any one-sided pressure or impacts which have to be
compensated by the outer rings. Secure the bearing with disc 550.01 and circlip
932.
Installing the non-drive end bearing
✓ The impeller has been fitted.
✓ The shaft seal has been fitted.
✓ The corresponding general assembly drawing and installation instructions are
available.
1. Slide bearing cover 360 with inserted lip seal 421.02 (for ATEX-version labyrinth
seal 423.02) on shaft protecting sleeve 524.
2. Heat up deep groove ball bearing 321 and fit it onto sleeve 520.
3. Slide sleeve 520 with deep groove ball bearing 321 onto pump shaft 211 with
the key 940.01 inserted.
Horizontal
installation
7 Servicing/Maintenance
Omega / Omega V
63 of 94
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