Grundfos LS 500-300-490E Installation And Operating Instructions Manual
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Grundfos LS 500-300-490E Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS
LS
3
Large LS models, flow range is greater than 3000 m
/h
Installation and operating instructions

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Summary of Contents for Grundfos LS 500-300-490E

  • Page 1 GRUNDFOS INSTRUCTIONS Large LS models, flow range is greater than 3000 m Installation and operating instructions...
  • Page 3 English (GB) Installation and operating instructions ........4...

  • Page 4: Table Of Contents

    English (GB) Installation and operating instructions Original installation and operating instructions 10.2 Mechanical shaft seal replacement ..31 10.3 Replacing the stuffing ... . . 31 Table of contents Disassembly and assembly of LS General information .

  • Page 5: General Information

    Observe these instructions for explosion- proof products. 1.1 Hazard statements The symbols and hazard statements below may appear in Grundfos installation and operating A blue or grey circle with a white graphical instructions, safety instructions and service symbol indicates that an action must be instructions.

  • Page 6: Delivery And Handling

    2. Delivery and handling 2.2.2 Separate baseplate for pump and motor 2.1 Receiving • Check pumping unit for shortage and damage immediately upon arrival. Pump accessories when required are packaged in a separate container and shipped with the unit. • If equipment is damaged in transit, promptly report this to the carrier's agent.

  • Page 7: Temporary Storage

    Lifting high-voltage motor with baseplate 2.3 Temporary storage • If the pump is not to be installed and operated soon after arrival, store it in a clean, dry area of moderate ambient temperature. • Rotate the shaft by hand periodically to coat bearing with lubricant to prevent oxidation and corrosion.

  • Page 8: Mechanical Installation

    3. Mechanical installation grooved before the concrete sets to provide a suitable bonding surface for the grout. Anchor bolts should be All installations should be performed by personnel set in pipe sleeves for positioning allowance, as experienced with the placement, connection, and shown in fig.

  • Page 9: Pump Flexible Installation And Connection

    3.3 Pump flexible installation and 3.2.1 Securing the baseplate connection • After the concrete pad has been poured and set, lower the pump base plate over the anchor bolts There are two methods for pump flexible installation: and rest it on loose adjustment wedges or shims •...

  • Page 10: Electrical Installation

    4. Electrical installation 3.3.2 Using anti-vibration pad and soft connector. Another way is to use the anti-vibration pad to 4.1 Motors, general segregate the pump base from nearby buildings (see fig. Pump with anti-vibration pad), and soft connectors • All electrical installations should be accomplished must be also installed to the inlet and outlet pipe.

  • Page 11: Piping

    5. Piping 5.1 General precaution Do not use pump as a support for piping. • Use pipe hangers or other supports at proper intervals to provide complete piping support near the pump. • Both suction and discharge piping should be independently supported and properly aligned so that no strain is transmitted to the pump when flange bolts are tightened.

  • Page 12: Discharge Piping

    5.5 General information of shaft sealing • Grundfos offers both mechanical shaft seals and stuffing boxes as a means to seal the shaft. • Pumps with stuffing boxes are normally packed before shipment.

  • Page 13: Mechanical Shaft Seals

    5.7 Mechanical shaft seals 5.8.1 Aligning the pump and motor with a straightedge ruler All LS pumps that are equipped with mechanical shaft 1. Make a rough alignment of pump and motor, and seals are matched to conditions for which the pump tighten the screws in the base frame to the correct was sold.
  • Page 14 4. Turn the coupling 90°, and repeat the 8. Check the gap S2 both vertically and horizontally. measurement with straightedge and feeler gauge. • If the air-gap width is within the tolerances, the • If the measured values are less than 0.13 mm, alignment is complete.
  • Page 15 3. Fasten a dial indicator to the hub of coupling guard, make sure the dial indicator is on the outer circumference of coupling guard. 5. Adjust the position of the motor. Loosen the screws that hold the motor in place. 4.
  • Page 16 8. Check the gap S2 both vertically and horizontally. 3. Fasten the other laser bracket to the motor coupling. • If the air-gap width is within the tolerances, the alignment is complete. 4. Place laser unit S, stationary, on the stationary part and laser unit M, movable, on the movable •...
  • Page 17 7. Measure the distance between the white lines on 11. Measure the distance from the S unit to the first the laser units. screw on the motor. 8. Enter the distance. 12. Enter the distance. 9. Measure the distance between the S unit and the 13.
  • Page 18 15. Turn the laser units to position 9 o'clock. 20. Loosen the screws that hold the motor in place. Adjust the position of the motor. 16. Confirm on the control box. 21. Insert shims with the required thickness. 17. Turn the laser units to position 12 o'clock. Confirm on the control box.
  • Page 19 5 mm ± 0.5 5 mm ± 0.5 If the coupling and motor are not supplied by Grundfos, make sure to follow the coupling See the table Air-gap width S2. manufacturer’s instructions. 5.8.4 Tightening torques WARNING Refer to this tightening torques table when align the Crushing of hands motor and pump.

  • Page 20: Spacer Coupling Installation

    5.9 Spacer coupling installation circumference and end face mustn't exceed 0.05 mm. For hub flange diameter bigger than 250 mm, 5.9.1 Preparation the maximum deviation is 0.08 mm. Reinstall the hub if the deviation exceeds the limit. Refer to • Check the spacer coupling for possible transport section Tightening torques for spacer coupling.
  • Page 21 5. Place the disc packs and the spacer between the Self-locking nuts can be used hubs, tighten with bolts, sleeves and self-locking repeatedly. But if the nuts can be freely nuts or slotted nuts. The hexagon bolts (2) must tighten to bolts manually or the nuts be installed next to flanges (8).
  • Page 22 5.9.3 Accepted misalignment Dial indication Accepted misalignment is usually provided by device Type End face manufacturer. Refer to table below for the deviations Radial (mm) (mm） of hubs and radial direction if you don't have the data. TD (P) 8-9015 0.40 0.40 The deviation of hub's end face and radial...

  • Page 23: Installing Coupling Guard

    5.10 Installing coupling guard 5.9.4 Tightening torques for spacer coupling Refer to this tightening torques table when install the 1. Align the notch of coupling guard and the spacer coupling. lubricating nipple (2). Then install the coupling guard (4) to the outer ring of the bearing housing (1) (or * the fixing ring for pre-installation).
  • Page 24 3. Pre-install the supporting foot (7) on the base frame via bolts (11). Pre-installing the supporting foot Pre-installing supporting bracket The purpose of pre-installation is to provide space for adjustment in the following steps. The purpose of pre-installation is to provide space for adjustment in the Normally, the base frame is a common following steps.

  • Page 25: Operation

    6. Operation • Tighten plugs in gauge and drain taps. If pump is fitted with pressure gauges, keep gauge cocks closed when not in use. 6.1 Priming • Recheck the motor to pump alignment, refer to Tighten the bolts which attached lower and section Coupling alignment.

  • Page 26: Pump Shutdown

    7. Pump identification 7. After entirely filling the system, fully open discharge valve and close system bleed valves. All LS pumps are identified by Pump Type and Serial Numbers. These numbers are stamped on the pump 8. If the pump is fitted with pressure gauges, open nameplate affixed to each pump volute, and should gauge cocks and record pressure reading for be referred to in all correspondence with LS pumps.

  • Page 27: Lubrication And Maintenance

    8. Lubrication and maintenance • Most low power motors using "sealed-for-life" bearings require no lubrication. • Table Recommended bearing grease for motors 8.1 Motor lubrication and pumps in section Grease lubrication lists the recommended types of grease for motor and WARNING pump lubrication.
  • Page 28 • Temperature range: Continuous operating -40 ~ Lubrication +150 °C . maintenance Maintenance schedule Bearing Grease Pump type Perio location quantity [g] Lubrication maintenance First Reloa [hour] Bearing Grease Pump type Perio location quantity [g] Drive end 3000 First Reloa Non-drive 600-500-498A [hour]...
  • Page 29 Lubricant should be according with ISO VG46 under the grease. normal temperature condition (0-60 °C), please contact Grundfos in case of special conditions. Do not over grease. Too much grease can cause over-heating and premature bearing failure. The bearing manufacturers recommend that the bottom 1/3 of the bearing be filled with grease.

  • Page 30: Stuffing Box Packing Shaft Seal-Water Lubrication

    8.3 Stuffing box packing shaft seal-water 10. Bearing, seal and packing lubrication replacement The stuffing box must be supplied at all times with a 10.1 Bearing replacement source of clean, clear liquid to flush and lubricate the packing. Only a sufficient volume of sealing liquid to (Refer to sectional drawings in section Construction.) create a definite direction of flow from the stuffing box 1.

  • Page 31: Mechanical Shaft Seal Replacement

    2. Remove deep groove ball bearing (D19) and • For structure type 4 (see section Sectional bearing sleeve (C8) from bearing housing (D4). drawing, structure type 4) 3. Remove deep groove ball bearing (D19) from Remove rotating ring of mechanical shaft bearing sleeve (C8).

  • Page 32: Disassembly And Assembly Of Ls Pumps

    11. Disassembly and assembly of LS 6. Fill three or four circles of packing (31) to replace the old one behind distribution ring (D30) and pumps stagger the joints 120° on each packing circle. 11.1 Dismantling the pump 7. Install stuffing box gland (D33). 1.

  • Page 33: Assembly Of Ls Pumps

    13. Ordering parts Related information 14.1 Structure type 1 Grundfos has over 100 years of experience in the 14.2 Structure type 2 design, manufacture, and application of centrifugal pumps and pumping systems. Grundfos' commitment 14.3 Structure type 3 to state-of-the-art pump design and quality 14.4 Structure type 4...

  • Page 34: Construction

    14. Construction 14.1 Structure type 1 Non-balanced mechanical shaft seal (or stuffing box with shaft sleeve), bearing with bearing sleeve in the non- drive end, deep groove ball bearing in the drive end. Sectional drawing, structure type 1 Pos. Description Pos.
  • Page 35 LS 500-350-608A, LS 500-350-702A, LS 500-300-710B, LS 500-300-680C, LS 600-400-722A, LS 600-500-610B, LS 600-500-610D, LS 700-500-667D, LS 700-500-725E, LS 700-500-585F, LS 800-600-683B, LS 800-600-667C, LS 1000-700-815C, LS 1000-700-770E, LS 500-300-490E, LS 500-300-508F, LS 500-400-423A, LS 500-400-458C, LS 500-400-530B, LS 500-400-498C...

  • Page 36: Structure Type 2

    14.2 Structure type 2 Balanced mechanical shaft seal (or stuffing box with shaft sleeve), bearing with bearing sleeve in the non-drive end, deep groove ball bearing in the drive end. D33 C6 E3 D3 D1 D9 D19 D18 F2 G1 D32 A1 Sectional drawing, structure type 2 Pos.
  • Page 37 Pos. Description Pos. Description Pos. Description Lock nut Key, coupling Sleeve Bearing cap, drive end Coupling half Deep groove ball Bearing sleeve Lock washer bearing, drive end Seal cover Tab washer Applicable types: LS 500-300-710B, LS 500-300-680C, LS 600-400-722A, LS 600-500-610B, LS 600-500-610D, LS 700-500-667D, LS 700-500-725E, LS 700-450-1010A, LS 700-450-950B, LS 700-500-585F, LS 800-600-683B, LS 800-600-667C, LS 1000-700-815C, LS 1000-700-770E...

  • Page 38: Structure Type 3

    14.3 Structure type 3 Multi-spring mechanical seal with shaft sleeve (or stuffing box with shaft sleeve), bearing with bearing sleeve in the non-drive end, deep-groove ball bearing with bearing sleeve in the drive end. D3 D1 D9 D19 D18 F2 G1 D8 D4 C8 D11 Sectional drawing, structure type 3 Pos.
  • Page 39 Pos. Description Pos. Description Pos. Description Sleeve Lock nut Bearing sleeve Bearing cap, drive end Coupling half Lock washer Tab washer Applicable types: LS 700-450-1010A, LS 700-450-950B...

  • Page 40: Structure Type 4

    14.4 Structure type 4 Bellows balanced mechanical shaft seal with shaft sleeve (or stuffing box with shaft sleeve), bearing without bearing sleeve in the non-drive end, deep-groove ball bearing in the drive end. Sectional drawing, structure type 4 Pos. Description Pos.

  • Page 41: Fault Finding The Product

    15. 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 on. 15.1 The pump delivers no liquid Cause Remedy...

  • Page 42: The Pump Does Not Create Enough Pressure

    Replace the packing rings. The impeller diameter is too small. • Check with Grundfos if you can use a larger impeller. If not, reduce the outlet pipe friction losses. But be careful not to overload the motor. Obstruction in pump housing.

  • Page 43: The Pump Loses Liquid After Running For A Short Time

    The viscosity or specific gravity of the pumped liquid • Use a larger motor. Consult Grundfos for is higher than that of water. recommended size. •...

  • Page 44: The Motor Is Overloaded

    15.6 The motor is overloaded Cause Remedy The viscosity or specific gravity of the pumped liquid • Use a larger motor. Consult Grundfos for is higher than that of water. recommended size. • Test the liquid for viscosity and specific gravity.

  • Page 45: Cavitation Noise

    15.8 Cavitation noise Cause Remedy Air leak in the inlet pipe or flange. • Replace or repair the defective pipe section or flange. Cavitation; insufficient NPSH (depending on 1. Increase the net positive suction head by placing the installation). pump in a lower position. 2.

  • Page 46: 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 47 Argentina China Greece Bombas GRUNDFOS de Argentina S.A. GRUNDFOS Pumps (Shanghai) Co. Ltd. GRUNDFOS Hellas A.E.B.E. Ruta Panamericana km. 37.500industin 10F The Hub, No. 33 Suhong Road 20th km. Athinon-Markopoulou Av. 1619 - Garín Pcia. de B.A. Minhang District P.O. Box 71 Tel.: +54-3327 414 444...
  • Page 48 Fax: +66-2-725 8998 Fax: + 370 52 395 431 Москва, RU-109544, Russia Turkey Тел. (+7) 495 564-88-00 (495) 737-30-00 Malaysia GRUNDFOS POMPA San. ve Tic. Ltd. Факс (+7) 495 564 8811 GRUNDFOS Pumps Sdn. Bhd. Sti. E-mail grundfos.moscow@grundfos.com 7 Jalan Peguam U1/25 Gebze Organize Sanayi Bölgesi...
  • Page 49 98828146 09.2022 ECM: 1331040 www.grundfos.com...

This manual is also suitable for:

Ls 500-300-508fLs 500-300-710bLs 500-300-680cLs 450-350-397bLs 500-350-608aLs 500-350-702a ... Show all

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