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Summary of Contents for Grundfos LS Series
- Page 1 GRUNDFOS INSTRUCTIONS Horizontal split case pump Installation and operating instructions Installation and operating instructions http://net.grundfos.com/qr/i/99536991...
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Page 2: Table Of Contents
1. General information finding and disposal of the product. Grundfos LS horizontal split case pumps are supplied either as a complete pump with motor, base CONTENTS frame and approved coupling guard or as a bare Page shaft pump. -
Page 3: Notes
Parts or accessories are sometimes wrapped individually or fastened to the equipment. If any damage or losses have occurred, promptly notify Grundfos' representative and the carrier's agent at once. Bolts for LS bare shaft pumps have US threads for which inch tools are required. -
Page 4: Installing The Product
3. Installing the product 3.1 Location Install the pump with accessibility for inspection and maintenance. Allow ample space and headroom for the use of an overhead crane or hoist sufficiently strong to lift the unit. Fig. 2 How to lift and handle the LS pumps Fig. - Page 5 3.2.3 Vibration dampers 3.2.5 Foundation and preliminary alignment procedure Vibration dampers may be required to prevent pump vibrations from being transmitted to the building or The foundation and preliminary alignment procedure the pipes. In order to select the right type of vibration has four steps: damper, you need this information: 1.
- Page 6 Shimming of base frame Carry out alignment of the motor by placing shims of different thickness under the motor. If possible, replace several thin shims with one thick shim. The preliminary alignment procedure has four steps: 1. Checking coupling clearance Make sure that the gap between the coupling halves is equal to the values in the table and that the keyways are 180 °...
- Page 7 4. Checking angular alignment Grouting Insert a pair of inside callipers or a taper gauge at Grouting compensates for uneven foundation, four points at 90 ° intervals around the coupling. See distributes the weight of the unit, dampens vibrations fig. 7. The angular alignment is correct when the and prevents shifting.
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Page 8: Electrical Connection
3.3 Electrical connection 3.3.1 Frequency converter operation You can connect all three-phase motors to a The electrical connections must be carried out by an frequency converter. authorised electrician in accordance with local regulations. However, frequency converter operation often exposes the motor insulation system to a heavier DANGER load and causes the motor to be more noisy than usual due to eddy currents caused by voltage peaks. -
Page 9: Pipes
3.4 Pipes 3.4.2 Inlet pipes Place the pump below system liquid level whenever Protective covers are fitted to the inlet and possible. This will facilitate priming, assure a steady outlet ports to prevent foreign bodies from liquid flow and provide a positive suction head. entering the pump during transportation and installation. - Page 10 3.4.5 Auxiliary pipes Drains Install the drain pipes from the pump casing and stuffing boxes to a convenient disposal point. Flushing pipes • Pumps fitted with stuffing boxes When the inlet pressure is below the ambient pressure, supply the stuffing boxes with liquid to provide lubrication and prevent the ingress of air.
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Page 11: Inlet Pipe Guidelines
3.5 Inlet pipe guidelines 3.5.1 Common guidelines Avoid air pockets or turbulence in the inlet pipe Never use reducers in a horizontal inlet pipe as shown in fig. 10. Instead, use an eccentric reducer as illustrated in fig. 9. Correct Wrong Air pocket Concentric reducer... - Page 12 3.5.4 Inlet pipe if the feed line comes in different horizontal planes Avoid high spots, such as loops, as they will collect air and throttle the system or lead to uneven pumping. Correct Wrong Air pocket Eccentric reducer Eccentric reducer Fig.
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Page 13: Starting Up The Product
3.5.6 Installations with vertical inlet pipe in 4.1.2 Flushing the pipe system confined space The pump is not designed to pump liquids containing solid particles such as pipe debris and welding slag. Before starting up the pump, the pipe system must be thoroughly cleaned, flushed and filled with clean water. -
Page 14: Priming
4.2.4 Direction of rotation WARNING Check the direction of rotation in the following way: Hot or cold surface 1. Disconnect the two coupling halves between Death or serious personal injury pump and motor. - Pay attention to the direction of the vent 2. -
Page 15: Startup
Suction lift system without foot valve 3. When the pipe system has been filled with liquid, slowly open the outlet isolating or throttle valve 1. Connect an external vacuum pump to the vent until it is completely open. Ensure that the hole on the top of the pump casing. -
Page 16: Final Alignment
4.5 Final alignment Parallel alignment - horizontally Make the final alignment by shimming the motor only. 1. Let the pump run until it has reached its operating temperature under normal operating conditions (approximately 1 hour). 1. Turn the motor and pump shaft to 270 ° (9 2. -
Page 17: Greasing The Grid Coupling
Angular alignment - vertically 4.6 Greasing the grid coupling Pack the spaces between and around the grid with as much lubricant as possible and wipe off the excess lubricant so that it is flush with the top of the grid. See section 6.3.3 Lubrication. -
Page 18: Product Introduction
5.3 Identification The type designation and rating information of 5.1 Applications Grundfos horizontal split case pumps are stated on the nameplate. See fig. 21. The type designation Grundfos LS horizontal split case pumps are typically includes model number, size and type. - Page 19 5.3.2 Type key The type key is an explanation of the product type designation. See fig. 21, pos. 1. Example LS 125 -100 -305X /273.1 , (W) 1 F2 D S BBQE 1 Type range LS horizontal version Nominal diameter of the inlet port (DN) Nominal diameter of the outlet port (DN) Maximum impeller diameter [mm] If suffix is used:...
- Page 20 Example LS 125 -100 -305X /273.1 , (W) 1 F2 D S BBQE 1 Code for pump casing and impeller materials Cast iron and SS304 Q: Ductile iron and SS304 C: Cast iron and SS316 G: Ductile iron and SS316 Cast iron and bronze A: Ductile iron and bronze D: Cast iron and duplex stainless steel...
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Page 21: Servicing The Product
Death or serious personal injury - Pay attention to the direction of the vent If you request Grundfos to service the product, hole, and ensure that the escaping contact Grundfos with details about the liquid before water does not cause injury to persons returning the product for service. - Page 22 6.3.2 Frequency of inspections 6.3.3 Lubrication Carry out inspections in accordance with the Pump bearings maintenance table below. Pump bearings are lubricated before delivery. Depending on operating and environmental We recommend relubricating intervals of 2000 conditions together with a comparison of previous operating hours.
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Page 23: Taking The Product Out Of Operation
Texaco Polystar RB temperatures below 0 °C, keep the liquid moving within the pump casing and insulate or heat the Grundfos recommends Shell Gadus S2 V2202 or pump exterior to prevent freezing. SKF LGHP 2 grease for relubrication. Grid coupling A grid coupling must be regreased at intervals. -
Page 24: Long-Term Shutdown
7.2 Long-term shutdown 1. After draining the pump during long shutdown periods under freezing conditions, blow out all For long shutdown periods or to isolate the pump for liquid in passages and air pockets using maintenance, close the inlet and outlet valves. If no compressed air. -
Page 25: Fault Finding The Product
8. Fault finding the product DANGER Electric shock Death or serious personal injury - Before you remove the terminal box cover and before you remove or dismantle the pump, make sure that the power supply has been switched off and that it cannot be accidentally switched Faults Causes... - Page 26 Faults Causes The pump delivers no liquid. The pump does not deliver enough liquid. The pump does not create enough pressure. The pump loses liquid after running for a short time. The pump consumes too much power. The motor is overloaded. Vibrations.
- Page 27 Extend the inlet pipe so that the risk of sucking air is eliminated. deeply enough. Check with Grundfos if you can use a larger impeller. If not, The impeller diameter is too small. reduce the outlet pipe friction losses. But be careful not to seriously overload the motor.
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Page 28: Technical Data
9. Technical data 9.1 Operating conditions 9.1.1 Ambient temperature and altitude The ambient temperature and the installation altitude are important factors for the motor lifetime, as they affect the life of the bearings and the insulation system. If the ambient temperature or the altitude exceeds 20 25 30 35 40 45 50 55 60 65 70 75 80 the recommended maximum ambient temperature or t [°C]... - Page 29 NPSH curve for the pump + a safety margin of least 3 minutes before restart. minimum 0.5 metres head. 51 to 100 kW NPSH appears from the data booklet and Grundfos 10 starts per hour. The motor must be stopped for at Product Center. least 5 minutes before restart.
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Page 30: Flange Forces And Torques
Flange forces and torques Horizontal pump, side branch, y-axis If not all loads reach the maximum permissible value, one of the values is allowed to exceed the normal limit. Contact Grundfos for further information. Force [N] Torque [Nm] Diameter Casting material ΣF... - Page 31 Force [N] Torque [Nm] Diameter Casting material ΣF ΣM Stainless steel 9810 7897 8780 15353 4218 4856 5935 8731 Stainless steel 11429 9221 10251 17903 5396 6229 7603 11183 Stainless steel 13047 10546 11723 20454 6769 7799 9516 14028 Stainless steel 14666 11870 13194 23004 8339 9614...
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Page 32: Sound Pressure Level
9.3 Sound pressure level 60 Hz The data in this table applies for pumps including 2-pole: n = 3500 min motor, such as MG, MMG, Siemens and TECO motors. 4-pole: n = 1750 min The values stated are maximum sound pressure 6-pole: n = 1170 min levels. -
Page 33: Disposing Of The Product
1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. The crossed-out wheelie bin symbol on a product means that it must be disposed of separately from household waste. - Page 34 Argentina China Hong Kong Bombas GRUNDFOS de Argentina S.A. GRUNDFOS Pumps (Shanghai) Co. Ltd. GRUNDFOS Pumps (Hong Kong) Ltd. Ruta Panamericana km. 37.500 Centro 10F The Hub, No. 33 Suhong Road Unit 1, Ground floor Industrial Garin Minhang District Siu Wai Industrial Centre 1619 Garín Pcia.
- Page 35 Malaysia Serbia Turkey GRUNDFOS Pumps Sdn. Bhd. Grundfos Srbija d.o.o. GRUNDFOS POMPA San. ve Tic. Ltd. 7 Jalan Peguam U1/25 Omladinskih brigada 90b Sti. Glenmarie Industrial Park 11070 Novi Beograd Gebze Organize Sanayi Bölgesi 40150 Shah Alam Phone: +381 11 2258 740...
- Page 36 99536991 0320 ECM: 1252303 www.grundfos.com...
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