7 Servicing/Maintenance
47 of 64
MK
CAUTION
Insufficient lubrication
Damage to the bearing!
Prior to fitting the Nilos ring, pack its cranked sealing groove with grease.
3. Pack the cranked sealing groove of ring 500.01 with grease. Then fit the ring in
thrust and radial bearing 303.01.
4. Fit bearing 321 with fitted sleeve 520 and shaft 210 in prepared thrust and
radial bearing 303.01 using studs 902.61.
5. Insert the key into the motor shaft.
6. Slide the motor shaft into sleeve 520.
7. Screw the motor to the thrust and radial bearing with hexagon head bolts
901.01.
7.5.2.3.1 Installing the shaft seals
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The relevant packing chamber has been cleaned meticulously.
1. Fit stud 902.60 in drive lantern and position the gland packing ring 461.60 in
outer position and 461.61 in inner position.
2. Insert the first packing ring and push it inwards with gland follower 452.60.
3. Insert subsequent packing rings one at a time, with their joints staggered at
approximately 90°. Use gland follower 452.60 to seat each individual packing
ring in the packing chamber.
4. Tighten gland follower 452.60 lightly and evenly. It must be easy to rotate the
rotor after the final assembly.
5. Fit studs 902.01 in drive lantern 341.
6. Mount the prepared shaft assembly including motor on the drive lantern.
7. Tighten nuts 920.61.
8. Apply a thin coat of grease to the bearing positions on the shaft.
9. Swiftly press bearing bushes 545 into the corresponding radial bearings 303.02
and 303.03 (if any).
10. Carefully slide first support column 712.01 on the shaft. Secure it to drive
lantern 341 with nut 920.01.
11. Depending on the installation depth, carefully fit further radial bearings 303.02
and 303.03 (if any) with pressed-in bearing bush 545 and support columns
712.02/.03 and secure them with hexagon head bolts 901.03 and nuts 920.03.
12. Slide impeller 230 onto the shaft stub and secure it with grooved pin 561.02.
Make sure it is firmly seated.
13. Apply a thin layer of grease to the impeller face 230 at the sealing clearance.
14. Press casing wear ring 502 into volute casing 102. Screw in studs 902.02.
15. Carefully pull prepared casing 102 over impeller 230. Screw it to the bottom
radial bearing 303.02 and support column 712 with nuts 920.02.
16. Fit studs 902.62 in drive lantern 341.
17. Carefully guide pipe 710.01 through gland follower 452.62 with neck ring 457
and gland packing 461.62 and bolt it to volute casing 102 using nuts 920.62.
18. Fit level control equipment, if any.
Содержание MK
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