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Centrifugal Pump with
Volute Casing
Original Operating Manual
Version
BA-2017.03 en-US
ID-No.
550 154
160-282/0
NIT series
ALLWEILER GmbH
Postfach 1140
Allweilerstr. 1
78301 Radolfzell
Germany
Phone: +49 (0) 7732-86-0
Fax: +49 (0) 7732-86-436
E-mail: service@allweiler.de
Internet: http://www.allweiler.com
We reserve the right to make technical changes.
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Summary of Contents for Allweiler NIT Series
- Page 1 Centrifugal Pump with Volute Casing Original Operating Manual NIT series Version BA-2017.03 en-US ALLWEILER GmbH ID-No. 550 154 Postfach 1140 160-282/0 Allweilerstr. 1 78301 Radolfzell Germany Phone: +49 (0) 7732-86-0 Fax: +49 (0) 7732-86-436 E-mail: service@allweiler.de Internet: http://www.allweiler.com We reserve the right to make technical changes.
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Page 2: Table Of Contents
......37 Installing in the pipe ......16 NIT series BA-2017.03 en-US 160-282/0 – 550 154... - Page 3 Declaration of conformity according to EC Machine Directives ......41 160-282/0 – 550 154 BA-2017.03 en-US NIT series...
- Page 4 Declaration of conformity according to EC machine directives ......41 NIT series BA-2017.03 en-US 160-282/0 – 550 154...
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Page 5: About This Document
Declaration of conformity Conformity with standards Contents of the declaration of conformity (→ 9.5 Declaration of conformity according to EC Machine Directives, Page 41). Tab. 2 Other applicable documents and their purpose 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 6: Warnings And Symbols
Tab. 4 Symbols and their meaning Technical terms Term Meaning Sealing medium Medium for blocking or quenching shaft seals Auxiliary systems Systems for operating the pump Tab. 5 Technical terms and their meaning NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 7: Safety
(→ order data sheet, technical description). • When using auxiliary systems, ensure there is a continuous supply of the appropriate operating medium. 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 8: Obligations Of The Operating Company
• Obtain the manufacturer's approval prior to carrying out any modifications, repairs or alterations during the warranty period. • Only use genuine parts or parts that have been approved by the manufacturer. NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 9: Layout And Function
13 Flow rate 3.1.2 ATEX plate II 2 G c b Tx Technical File No.: EX9 03 09 45910 002 Fig. 2 ATEX plate (example) Explosion protection mark Reference to ATEX additional instructions 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 10: Layout
Layout and function Layout Fig. 4 Layout Motor with fixed bearing at drive end Limit for heat insulation Shaft seal Motor bell housing Impeller Guard sheet Stub shaft Volute casing NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 11: Shaft Seals
Characteristics of the sealing medium Open flow system • Supplied and drained continuously • Unpressurized Closed flow system • Circulates in a closed circuit • Unpressurized Tab. 6 Quenching - variants and characteristics 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 12: Transport, Storage And Disposal
Fastening the lifting gear to the pump aggregate 3. Turn the shaft once a month. 4. Make sure the shaft and bearing change their rotational position in the process. 5. Every 6 months: – Renew the preservative if necessary. NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 13: Removing The Preservative
3. For storage times in excess of 6 months: – Replace the elastomer parts made of EP rubber (EPDM). – Check all elastomer parts (O-rings, shaft seals) for proper elasticity and replace them if necessary. 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 14: Setup And Connection
NOTE Material damage on the bearing or shaft seal due to over- heating! Only install the heat insulation on the volute casing (→ Figure Layout, Page 10). Install the heat insulation properly. NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 15: Planning The Pipes
3. Provide for pump-side temperature measurements. Suction side: shorter pipes are possible but may restrict the hydraulic performance. Pressure side: shorter pipes are possible but can result in increased operating noise. 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 16: Installing In The Pipe
Feed the quenching egress (QO2) into a closed con- aggregate and all operating forces which occur. tainer. Make sure that the distance and alignment of the pipe flanges comply with the pump dimensions (→ setup draw- ing). NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 17: Installing The Motor
(→ 9.1 Sectional drawings, Page 31). sure points. 3. Undo the hexagon head bolts (901.07) and remove the washers (554.07). 4. Remove one half of the guard sheet (686.01) from the motor bell housing (341.01). 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 18: Electrical Connection
2. Make sure no danger arises due to electric power. 3. Install an EMERGENCY STOP switch. 5.5.2 Checking the direction of rotation Only possible when putting the pump into service (→ 6.1 Preparations for the initial start-up, Page 19). NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 19: Operation
2. Fill slowly with pumped liquid up to the bottom edge of the filling hole. – Ensure that the air can escape from the bearing hous- ing. 3. Screw in and tighten the screw plug A6/E6. 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 20: Checking The Direction Of Rotation
4. Once the motor has reached its nominal speed, open the pressure-side armature slowly until the operating point is reached. 5. For pumps with hot pumped liquids, make sure any tem- perature changes do not exceed 5 K/min. NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 21: Switching Off
– Remains liquid, non-corrosive – Remains liquid, Empty the corrosive pump and containers. Treat the pump and containers with preser- vative. Tab. 9 Measures depending on the behavior of the pumped medium 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 22: Start-Up Following A Shutdown Period
1. Completely open the suction-side armature. 2. Open the pressure-side armature to the extent that the stand-by pump reaches its operating temperature and is heated through evenly (→ 6.2.1 Switching on, Page 20). NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 23: Maintenance
Mechanical seals Mechanical seals have functional leaks (→ manufacturer's specifications). In the event of a larger leak: replace the mechanical seal and its auxiliary seals and check the integrity of the auxiliary systems. 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 24: Sealing Medium
Observe the manufacturer's specifications (e.g. for the motor, coupling, mechanical seal, blocking pressure sys- tem, cardan shaft, drives, belt drive etc.). NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 25: Returning The Pump To The Manufacturer
1. When dismounting, observe the following: – Mark the precise orientation and position of all compo- nents before dismounting. – Dismantle components concentrically without canting. 2. Dismount the pump (→ sectional drawing). 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 26: Installing
3. Install the pump (→ sectional drawing). 4. Install the pump in the system (→ 5 Setup and connection, Page 14). NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 27: Ordering Spare Parts
8. Install the auxiliary devices: – Manometer lines and holdings on the pump – Auxiliary piping 9. Turn the stub shaft by hand: – Ensure the stub shaft can be turned easily without pres- sure points. 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 28: Troubleshooting
Excessive amount of gas: pump is Consult the manufacturer. cavitating – – – – – Pumped medium temperature too high: Increase the supply pressure. pump is cavitating Lower the temperature. Consult the manufacturer. NIT series BA-2017.03 en-US 160-282/0 – 550 154... - Page 29 Dismount the pump. Hydraulic parts of the pump dirty, clotted or encrusted Clean the parts. – – – – – – – Defective antifriction bearing in motor Replace the antifriction bearing (→ manufacturer's specifications). 160-282/0 – 550 154 BA-2017.03 en-US NIT series...
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Page 30: Troubleshooting List
Check the pipe connections and pump attachment. – – – – Motor running on 2 phases Check the fuse and replace it if necessary. Check the cable connections and insulation. Tab. 13 Troubleshooting list NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 31: Appendix
914.03 Socket head cap screw 411.03 Seal ring 914.04 Socket head cap screw 411.14 Seal ring 914.05 Socket head cap screw 411.15 Seal ring 914.14 Socket head cap screw 411.16 Seal ring 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 32: Designations Of Components According To Part Numbers
Snap ring 932.04 Snap ring 932.06 Snap ring 936.01 Spring ring 940.01 Shaft key 940.03 Shaft key 971.01 Type plate 972.01 Information plate Tab. 15 Designations of components according to part numbers NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 33: Sectional Drawings
411.16 411.14 903.10 932.04 551.04 321.03 914.16 161.10 102.06 400.02 940.01 411.02 461.02 936.01 903.02 922.01 932.11 914.01 346.01 230.05 558.01 Fig. 13 U5A - Unbalanced mechanical seal, with safety stuffing box 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 34: Fan Casing
Version with intermediate ring (sizes 40-250 and 50-250) 914.01 400.03 914.04 161.03 914.04 400.03 Fig. 19 Version with intermediate ring, sizes 40-250/01 and 50-250/01 Fig. 16 Housing cover version (sizes 2/40-250 and 2/50-250) NIT series BA-2017.03 en-US 160-282/0 – 550 154... - Page 35 Appendix Fig. 20 Two-stage sizes, non-cooled, unbalanced mechanical seal U5A, with safety stuffing box Fig. 21 Quenching seal housing 160-282/0 – 550 154 BA-2017.03 en-US NIT series...
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Page 36: Technical Specifications
11,0 68,5 100-250 15,0 69,5 100-315 18,5 70,5 125-250 22,0 71,5 Tab. 16 Assignment of the pump size to the stub shaft diameter 30,0 72,5 37,0 73,5 Tab. 19 Sound pressure levels NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 37: Tightening Torques
E.g. spirit, Ritzol 155, strong water sector alkaline soapy solution, steam jet (for individual parts only) Nikutex 304 Cold cleaning agent Other Benzine, wax solvents, diesel, paraffin, alkaline cleaners Tab. 21 Cleaning agents 1) Recommendation 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 38: Maximum Flange Loads
1180 1500 1675 1350 2623 1297 1775 1975 1600 3100 1050 1602 2250 2500 2025 3926 1250 1025 1838 3000 3350 2700 5245 1625 1150 1325 2391 Tab. 22 Maximum flange loads NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 39: Tab
Tab. 23 Spare parts for two years of continuous operation 1) Delivered as a mechanical unit (BG) or sales unit (VG) 2) Dependent on pump version 3) On versions with intermediate ring 160-282/0 – 550 154 BA-2017.03 en-US NIT series... -
Page 40: Declaration Of Harmlessness
The sender is liable for all damages caused by unmarked decontaminations of the returned object. Place, date Signature Stamp Tab. 24 Declaration of harmlessness NIT series BA-2017.03 en-US 160-282/0 – 550 154... -
Page 41: Declaration Of Conformity According To Ec Machine Directives
EC declaration of conformity according to machine directive, appendix II A ALLWEILER GmbH, Postfach 1140, 78301 Radolfzell, Germany; Tel. +49 (0)7732 86-0, Fax. +49 (0)7732 86-436, hereby declare that, when the conditions in the operating manual are observed, the pump unit / pump: Designation Equipment no. - Page 42 Appendix NIT series BA-2017.03 en-US 160-282/0 – 550 154...
- Page 43 Appendix 160-282/0 – 550 154 BA-2017.03 en-US NIT series...
- Page 44 Appendix NIT series BA-2017.03 en-US 160-282/0 – 550 154...
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