Grundfos NK B Illustrated Service Instructions Download Page 2

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AGE

Content

Mounting of shaft ......................................................................................................................... 3

Assembly of mechanical shaft seal............................................................................................... 5

Assembly of stuffing box .............................................................................................................. 7

Assembly of impeller and pump housing ................................................................................... 9

Alignment of pump and motor shafts........................................................................................ 13

Summary of Contents for NK B

Page 1: ...GRUNDFOS ILLUSTRATED SERVICE INSTRUCTIONS NK Model B...

Page 2: ...2 PAGE Content Mounting of shaft 3 Assembly of mechanical shaft seal 5 Assembly of stuffing box 7 Assembly of impeller and pump housing 9 Alignment of pump and motor shafts 13...

Page 3: ...3 Mounting of shaft 1 2 Tools and auxiliary materials for assembly 1 Fit circlip in bearing housing 2 3 4 Turn around bearing housing 3 Fit shaft with bearings into bearing housing 4...

Page 4: ...d hammer 5 Fit second circlip 6 7 8 Fit ball bearing cover 7 Lubricate thrower with soapy water and fit it on shaft 8 9 10 Mount second ball bearing cover at other end 9 Lubricate second thrower with...

Page 5: ...bricate seat and O ring for stationary part of seal with soapy water 1 Fit stationary seal in its seat in cover for pump housing 2 3 4 Press seal firmly into bottom position with a soft tool 3 Mount c...

Page 6: ...hole for shaft seal downwards 5 Tighten nuts 6 7 8 Fit protecting sleeve on shaft 7 Lubricate rotating part of shaft seal with soapy water 8 9 10 Press shaft seal into bottom position 9 Fit impeller s...

Page 7: ...7 Assembly of stuffing box 1 2 Fit O ring on shaft 1 Fit sleeve on shaft 2 3 4 Parts for stuffing box 3 Fit first stuffing box packing in bottom position in cover for pump housing 4...

Page 8: ...using 5 Fit the last three packings openings displaced 90 on all four 6 7 8 Fit studs in cover for pump housing 7 Fit the two gland halves 8 9 10 Fit nuts loosely 9 Mount cover for pump housing on bea...

Page 9: ...9 Assembly of impeller and pump housing 1 2 Fit impeller key on shaft 1 Fit impeller 2 3 4 Fit washer 3 Fit spring washer 4...

Page 10: ...nut 5 Lubricate O ring for pump housing and cover for pump housing with soapy water 6 7 8 Fit O ring on cover for pump housing 7 Mount pump housing on cover for pump housing 8 9 10 Tighten nuts 9 App...

Page 11: ...11 11 12 Fit plugs in pump housing 11 Check free rotation of impeller 12...

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Page 13: ...Alignment of pump and motor shafts 1 2 Tools and auxiliary materials for alignment 1 Place pump on base plate 2 3 4 Fasten pump including support with screws 3 Fit complete coupling half on pump shaft...

Page 14: ...alf on motor shaft 5 Mount motor on base plate 6 7 8 Distance between shaft ends should be 6 mm 2 mm Displace shaft keys 180 7 Check alignment with special tool 8 9 10 Repeat alignment check displaced...

Page 15: ...support must be raised 11 Cut out foil in adequate size 12 13 14 Place foil where needed 13 Tighten screws again 14 15 16 Check alignment carefully once more 15 Distance between coupling halves must...

Page 16: ...crew in coupling half 17 Mount support for coupling guard 18 19 20 Fit lower part of coupling guard and adjust length 19 Fit upper part of coupling guard 20 21 Tighten screws in coupling guard 21 Subj...

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Page 19: ...l 39 02 95838112 Telefax 39 02 95309290 95838461 Japan GRUNDFOS Pumps K K 1 2 3 Shin Miyakoda Hamamatsu City Shizuoka pref 431 21 Phone 81 53 428 4760 Telefax 81 53 484 1014 Korea GRUNDFOS Pumps Korea...

Page 20: ...www grundfos com V7 15 49 59 0303 GB Repl V7 15 45 59 1099 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence...