Stimmen - 3, Durchschnittliche Bewertung: 3.3 ( )

Hersteller: ITT Dateigröße: 460.62 kb Dateiname: Unterrichtssprache:

For lubrication procedure, refer to manufacturer’s instructions. 2. On frame-mounted units, regrease at ,000 hours use or after 3 months. Use # Sodium or Lithium grease and fill until grease comes out of the relief fitting. 9. Disassembly 1. Always turn power off. 2. Drain system. Flush if necessary. 3. Remove motor hold-down bolts on close-coupled or disconnect coupling and remove spacer. 4. Remove casing bolts and pump hold-down bolts. 5. Remove motor and rotating element from casing. 6. Unscrew impeller bolt with a socket wrench. Do not insert screwdriver between impeller vanes to prevent rotation. It may be necessary to use a strap wrench around the impeller if impacting the socket wrench will not loosen the impeller bolt. 7. Remove impeller o-ring. 8. Insert two pry bars ( 80. apart) between impeller and seal housing. Pry off impeller. 9. Remove shaft sleeve, seal spring, cupwasher, seal rotary and impeller key. 10. Remove seal housing. 11. Place seal housing on flat surface. Press out stationary seal parts. 12. Remove deflector from shaft on frame-mounted units. 13. Remove bolts holding bearing cover to frame and remove bearing cover (frame-mount). 14. Remove lip seals from bearing frame and bearing cover (frame-mount). 15. Remove shaft and bearings from frame (framemount). 16. Remove bearing retaining ring (frame-mount). 17. Use bearing puller or arbor press to remove ball bearings (frame-mount). 18. Remove wear ring if excessively worn. Use pry bar and/or vicegrips. 1. All parts should be cleaned before assembly. 2. Refer to parts list to identify required replacement items. 3. Reassembly is the reverse of the disassembly procedure. 4. Replace lip seals if worn or damaged (frame-mount only). 5. Replace ball bearings if loose, rough or noisy when rotated (frame-mount only). 6. Check shaft for maximum runout of .005" TIR. Bearing seats and lip seal areas must be smooth and free of scratches or grooves. Replace if necessary (framemount only). 7. All mechanical seal components must be in good condition or leakage may result. Replacement of complete seal assembly, whenever seal has been removed, is good standard practice. 8. If wear ring is being replaced, do not use lubricants on the metal-to-metal fit when pressing in the replacement. 9. If the impeller is removed, as for example to effect a mechanical seal change, this procedure must be followed: Old impeller bolt and impeller o-ring cannot be reused. 10. Install the mechanical seal stationary seat in the seal housing, using soapy water as a lubricant to ease insertion. 11. S-Group – Install the mechanical seal spring retainer, spring and rotary assembly on the shaft sleeve using soapy water to lubricate. Slide the shaft sleeve over the pump shaft, be sure that a new shaft sleeve o-ring is used. NOTE: THE SHAFT SLEEVE O-RING AND IMPELLER WASHER O-RING ARE ALMOST IDENTICAL IN DIAMETER. BE SURE TO USE THE SqUARE CROSS-SECTION O-RING IN THE IMPELLER WASHER. THE ROUND CROSS-SECTION O-RING IS USED IN THE SHAFT SLEEVE. 11. M-Group – Install the mechanical seal spring and rotary on the shaft sleeve using soapy water to lubricate. Slide the shaft sleeve over the pump shaft. Be sure that a new shaft sleeve o-ring is used. Place the mechanical seal spring retainer over the impeller hub. 12. Place the impeller key into the shaft keyway and slide the impeller in place. Install the impeller stud and impeller washer. Be sure that a new impeller o-ring is used. Tighten S-Group (3.8" thread) to 7 lb.ft. and M-Group (." thread) to 38 lb.ft. 13. Replace casing bolts and tighten in a crossing sequence to the torque values indicated below. S-Group – 5 lb.-ft. (35 N-m) M-Group – 37 lb.-ft. (50 N-m) 14. Check reassembled unit for binding by rotating shaft with appropriate tool from motor end. 15. If rubbing exists, loosen casing bolts and proceed with tightening sequence again. 11. Troubleshooting 1. Motor does not start, and no noise or vibration occurs: 1.1. Power supply not connected. 1.2. Fuses or protection device tripped or defective. 1.3. Loose or broken electrical connections. 2. Motor will not start, but generates noise and vibration: 2.1. Motor not wired as directed on diagram. 2.2. Shaft locked due to mechanical obstructions in motor or pump. 2.3. Low voltage or phase loss on three phase supply. 3. Pump does not deliver rated capacity: 3.1. Pump not filled and primed. 3.2. Pump has lost prime due to leaks in suction line. 3.3. Direction of rotation incorrect. See Rotation. 3.4. Head required is higher than that originally specified. (Valve may be partially closed.) 3.5. Foot valve clogged. 3.6. Suction lift too high. 3.7. Suction pipe diameter too small. 4. Protection trips as unit starts: 4.1. Phase loss on three-phase supply. 4.2. Protection device may be defective. 4.3. Loose or broken electrical connections. 4.4. Check motor resistance and insulation to ground. 5. Protection device trips too often: 5.1. Protection may be set to a value lower than motor full ...

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