Table of Contents
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Centrifugal Pump with
Volute Casing
Original Operating Manual
Version
BA-2021.04 en-US
161-295/E
NT 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.
Read carefully before use.
Retain for future use.
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Summary of Contents for Allweiler NT Series
- Page 1 Centrifugal Pump with Volute Casing Original Operating Manual NT series Version BA-2021.04 en-US ALLWEILER GmbH 161-295/E 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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Page 2: Table Of Contents
........27 Installation without a foundation ... . 18 NT series BA-2021.04 en-US 161-295/E... - Page 3 Declaration of conformity according to EC Machine Directive ......50 161-295/E BA-2021.04 en-US NT series...
- Page 4 ........47 NT series BA-2021.04 en-US...
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Page 5: About This Document
Ordering spare parts Declaration of conformity Conformity with standards, Content of the declaration of conformity (→ 9.5 Declaration of conformity according to EC Machine Directive, Page 50). Tab. 2 Other applicable documents and their purpose 161-295/E BA-2021.04 en-US NT series... -
Page 6: Warnings And Symbols
Symbols and their meaning Technical terms Term Meaning Sealing medium Medium as seal barrier/buffer fluid or for quenching of shaft seals Auxiliary systems Systems for operating the pump Tab. 5 Technical terms and their meaning NT series BA-2021.04 en-US 161-295/E... -
Page 7: Safety
When pumping liquids containing solids, ensure the limits for the proportion of solids and the grain size are main- tained (→ order data sheet, technical description). • When using auxiliary systems, ensure there is a continuous supply of the appropriate operating medium. 161-295/E BA-2021.04 en-US NT series... -
Page 8: Operator's Obligations
– Adherence to intended use – Statutory or other safety and accident-prevention reg- • When using combustion engines, consult Allweiler. ulations • Use elastic coupling according to DIN 740-2. – Safety regulations governing the handling of haz- ardous substances •... -
Page 9: Electric Shock
There is a risk of burns when touching hot surfaces. • Do not touch the pump during operation. • Allow the pump to cool down completely before carrying out any work. • Wear protective gloves. 161-295/E BA-2021.04 en-US NT series... -
Page 10: Layout And Function
10 Explosion protection mark 11 Power consumption 12 Motor speed Fig. 3 Digital nameplate, variant with optional RFID 13 Differential head transmitter (example) 14 Flow rate Identification number 15 Pump type code RFID transponder (HF) QR code NT series BA-2021.04 en-US 161-295/E... -
Page 11: Pump Type Code
2 / 32 – 200 / 01 180 U3D W10 Fig. 4 Pump type code (example) Series Number of stages (only with two-stage pumps) Outlet flange DN [mm] Nominal impeller diameter [mm] Hydraulic number Actual impeller diameter [mm] Shaft seal Material key 161-295/E BA-2021.04 en-US NT series... -
Page 12: Layout
The stuffing box must always leak slightly to carry the fric- Only one of the following shaft seals can be used. tional heat away. 3.3.1 Mechanical seals Mechanical seals have functional leaks. • Single mechanical seal • Single mechanical seal with quenching NT series BA-2021.04 en-US 161-295/E... -
Page 13: Auxiliary Systems
Cooling of seals Variant 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 161-295/E BA-2021.04 en-US NT series... -
Page 14: Transport, Storage And Disposal
For pumps without a support foot, use a shim plate on site. Fig. 9 Setting down the pump without an installed support foot Base Set down the pump properly. Fig. 7 Fastening lifting gear to pump unit NT series BA-2021.04 en-US 161-295/E... -
Page 15: Treatment For Storage
Neutralize residues of pumped liquid in the pump. – Removing the preservative (→ 4.4 Removing preser- vative, Page 15). Remove the plastic parts and dispose of them in accor- dance with local regulations. Dispose of the pump in accordance with local regulations. 161-295/E BA-2021.04 en-US NT series... -
Page 16: 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 (→ Fig. 5 NT layout, Page 12). Install the heat insulation properly. NT series BA-2021.04 en-US 161-295/E... -
Page 17: Installation On A Foundation
6. Use the integrated spirit level to check whether the pump is level end to end and side to side with a maximum allowable tilt of 1 mm/m. 7. Repeat the procedure until the base plate is correctly aligned. 161-295/E BA-2021.04 en-US NT series... -
Page 18: Installation Without A Foundation
– Recommended flow rate speed < 1 m/s 2. Make sure the nominal pressure pipe diameter is ≥ as pos- sible to the nominal outlet flange diameter. – Recommended flow rate speed < 3 m/s NT series BA-2021.04 en-US 161-295/E... -
Page 19: Specifying Pipe Lengths
2. To avoid air pockets: run the pipes with a continuous slope up to the pump. 3. Ensure no seals protrude inwards. 4. For suction operation: install a foot valve in the suction pipe to prevent the pump and suction pipe from running empty during downtimes. 161-295/E BA-2021.04 en-US NT series... -
Page 20: Installing The Pressure Pipe
2. Check whether the motor’s sense of rotation is the same as that of the arrow on the pump. 3. If the sense of rotation is different: swap two phases. 4. Couple the motor to the pump again. NT series BA-2021.04 en-US 161-295/E... -
Page 21: Aligning The Coupling Precisely
Carry out the measurement as illustrated. – Align the motor if there is a visible gap on the outer – If there is any angular displacement: align the motor. diameter (→ 5.9 Aligning the motor, Page 22). 161-295/E BA-2021.04 en-US NT series... -
Page 22: Aligning The Motor
(2) and tighten the lock nut (4). 4. Tighten the hexagon head bolts (1). 5. Check the alignment. 6. Repeat the alignment procedure if there is still any vertical misalignment. 7. Then tighten the motor fixing screws. NT series BA-2021.04 en-US 161-295/E... -
Page 23: Operation
4. Make sure the parameters required for the installed sealing system are met (→ 9.2.2 Parameters for auxiliary systems, Page 42). 5. Ensure that the permissible container pressure is not exceeded on blocking pressure systems (→ manufac- turer’s specifications). 161-295/E BA-2021.04 en-US NT series... -
Page 24: Start-Up
8. If present, set a slight leak at the stuffing box. Tab. 9 Measures depending on the behavior 6.2.2 Switching off of the pumped liquid Pressure-side fitting closed (recommended) 1. Switch off the motor. 2. Check all tie bolts and tighten them if necessary. NT series BA-2021.04 en-US 161-295/E... -
Page 25: Start-Up Following A Shutdown Period
Operate the stand-by pump at least once a week. 1. Completely open the suction-side fitting. 2. Open the pressure-side fitting to the extent that the stand-by pump reaches its operating temperature and is heated evenly. (→ 6.2.1 Switching on, Page 24). 161-295/E BA-2021.04 en-US NT series... -
Page 26: Maintenance
7.2.4 Cleaning the pump NOTE High water pressure or spray water can damage bearings! Do not clean bearing areas with a water or steam jet. Clean large-scale grime from the pump. NT series BA-2021.04 en-US 161-295/E... -
Page 27: Dismounting
Flush the pump and manufacturer’s decontaminate it if it was premises used for hazardous pumped liquids. …at the Return the complete pump manufacturer’s (not disassembled) to the premises for manufacturer. warranty repairs Tab. 11 Measures for return 161-295/E BA-2021.04 en-US NT series... -
Page 28: Installing
Fill the cavities between the rolling elements up to 40% with grease. – Wipe off any excess grease with a soft object. 6. Installing the pump in the system (→ 5 Setup and connec- tion, Page 16). NT series BA-2021.04 en-US 161-295/E... -
Page 29: Troubleshooting
Excessive amount of gas: pump is Consult the manufacturer. cavitating – – – – – – Pumped liquid temperature too high: Increase the pump inlet pressure. pump is cavitating Lower the temperature. Consult the manufacturer. 161-295/E BA-2021.04 en-US NT series... - Page 30 Impeller out of balance or blocked Dismount the pump and inspect it for dry-running damage. Clean the impeller. – – – – – – Hydraulic parts of the pump dirty, clotted Dismount the pump. or encrusted Clean the parts. NT series BA-2021.04 en-US 161-295/E...
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Page 31: Troubleshooting List
Replace the coupling units and realign them. – – – – – Motor running on 2 phases Check the fuse and replace it if necessary. Check the cable connections and insulation. Tab. 13 Troubleshooting list 161-295/E BA-2021.04 en-US NT series... -
Page 32: Appendix
Radial ball bearing 551.12 Spacer disk 322.01 Cylindrical roller bearing 557.01 Balance disk 330.01 Bearing bracket 557.02 Balance disk 360.01 Bearing cover 565.01 Rivet 360.02 Bearing cover 592.10 Base 400.01 Gasket 599,101 Crimping sleeve 400.02 Gasket NT series BA-2021.04 en-US 161-295/E... -
Page 33: Designation Of Components According To Part Numbers
908.02 Jacking screw 908.03 Jacking screw 914.04 Cheese head screw 914.05 Cheese head screw 920.01 Hexagon nut 920.03 Hexagon nut 920.05 Hexagon nut 920.06 Hexagon nut 920,106 Hexagon nut 920,107 Hexagon nut 922.01 Impeller nut 161-295/E BA-2021.04 en-US NT series... -
Page 34: Sectional Drawings
Appendix 9.1.3 Sectional drawings Sizes at bearing bracket 360 Fig. 18 U…D – Unbalanced mechanical seal Version 360–250 NT series BA-2021.04 en-US 161-295/E... -
Page 35: Fig. 19 U3
Appendix Sizes at bearing bracket 2/360 Fig. 19 U3…D – Unbalanced mechanical seal Version 2/360-250 161-295/E BA-2021.04 en-US NT series... -
Page 36: Fig. 20 U3
Appendix Sizes at bearing bracket 470 Fig. 20 U3…D – Unbalanced mechanical seal Version 470-400 Version 470-315 NT series BA-2021.04 en-US 161-295/E... -
Page 37: Fig. 21 U3
Appendix Sizes at bearing bracket 530 Fig. 21 U3…D – Unbalanced mechanical seal Version 530-315 and 530-400 161-295/E BA-2021.04 en-US NT series... -
Page 38: Fig. 22 U3
Appendix Sizes at bearing bracket 585 930.01 Fig. 22 U3…D – Unbalanced mechanical seal NT series BA-2021.04 en-US 161-295/E... -
Page 39: Fig. 23 U3
Appendix Sizes 300–315 and 300–400 at bearing bracket 585 930.01 Fig. 23 U3…D – Unbalanced mechanical seal 161-295/E BA-2021.04 en-US NT series... -
Page 40: Fig. 24 U3
Appendix Sizes 300–315 and 300–400 at bearing bracket 700 930.01 Fig. 24 U3…D – Unbalanced mechanical seal C01 connection on volute casing X housing cover detail Tab. 16 Versions and details at bearing bracket 700 NT series BA-2021.04 en-US 161-295/E... -
Page 41: Seals
U1B – Stuffing box with self-locking 672.01 9.1.5 Coupling guard Fig. 26 U3…D – Unbalanced mechanical seal 672.01 433.01 Fig. 27 U3.9D, U3.12D – Unbalanced mechanical seal Fig. 29 Coupling guard on base plate versions 161-295/E BA-2021.04 en-US NT series... -
Page 42: Technical Specifications
15.0 69.5 18.5 70.5 22.0 71.5 30.0 72.5 37.0 73.5 45.0 74.5 55.0 75.5 75.0 76.5 90.0 76.5 110.0 77.5 132.0 78.5 160.0 79.5 200.0 80.5 Tab. 19 Sound pressure level NT series BA-2021.04 en-US 161-295/E... -
Page 43: Tightening Torques
M12 x 1.5 M20 x 1.5 M24 x 1.5 922.01 1.4021 M30 x 1.5 M36 x 1.5 M48 x 1.5 Tab. 20 Tightening torques 1) does not apply to size 300–315 and 300–400 NT pumps 161-295/E BA-2021.04 en-US NT series... -
Page 44: Bearing Bracket Size
65-160 65-200 360-250 80-160 100-160 65-250 65-315 470-315 65-400 470-400 80-200 80-250 80-315 470-315 100-200 100-250 100-315 470-315 125-200 125-250 150-200 80-400 530-400 100-400 530-400 125-315 530-315 125-400 530-400 150-250 150-315 530-315 150-400 530-400 200-250 NT series BA-2021.04 en-US 161-295/E... -
Page 45: Height Offset For Motor Alignment With
1.40 – 0.60 – 1.42 – 0.63 – 1.44 – 0.65 – 1.46 – 0.67 – 1.48 – 0.69 1.50 1 full turn – 0.71 Tab. 25 Height setting at the adjusting screw – 0.73 161-295/E BA-2021.04 en-US NT series... -
Page 46: Flange Loads According To Iso 5199
2250 65-315 4700 3100 1400 7300 5800 2850 65-400 3200 2200 5600 4100 1600 80-160 5300 3400 1650 8000 6400 3350 80-200 5600 3600 1700 8300 6700 3600 80-250 4900 3200 1400 7500 5900 3000 NT series BA-2021.04 en-US 161-295/E... -
Page 47: Temperature
6650 22500 21500 12700 250-315 19900 13100 7350 25500 24500 13900 250-400 19800 13100 7400 25400 24400 14000 300-315 27750 18700 11000 37000 34000 20000 300-400 27750 18700 11000 37000 34000 20000 Tab. 26 Flange loads 161-295/E BA-2021.04 en-US NT series... -
Page 48: Spare Parts For Two Years Of Continuous Operation According To Din 24296
Various 150% Other seals (set) Tab. 27 Spare parts for two years of continuous operation 1) Delivered as a mechanical unit (BG) or sales unit (VG) 2) Depending on the size of the bearing bracket NT series BA-2021.04 en-US 161-295/E... -
Page 49: Declaration Of Harmlessness
The sender is liable for all damages caused by unmarked decontaminations of the returned object. Place, date Signature Stamp Tab. 28 Declaration of harmlessness 161-295/E BA-2021.04 en-US NT series... -
Page 50: Declaration Of Conformity According To Ec Machine Directive
Declaration of conformity 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 the pump unit/pump: Designation Equipment no. - Page 51 Appendix 161-295/E BA-2021.04 en-US NT series...
- Page 52 Appendix NT series BA-2021.04 en-US 161-295/E...
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