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Grundfos LS 500-300-490E User Manual

Grundfos LS 500-300-490E
49 pages
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LS
Large LS models, flow range is greater than 3000 m
3
/h
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

Table of Contents

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Grundfos LS 500-300-490E Specifications

General IconGeneral
ModelLS 500-300-490E
CategoryWater Pump
ManufacturerGrundfos
Rated Flow500 m³/h
Frequency50 Hz
Housing MaterialCast iron
Shaft MaterialStainless steel
Insulation ClassF
Inlet Diameter300 mm
Seal TypeMechanical Seal

Summary

Mechanical Installation

Piping Installation

Electrical Installation

Coupling and Shaft Alignment

Alignment Methods

Details three methods: straightedge, dial indicator, and laser for pump-motor alignment.

Spacer Coupling Installation

Step-by-step guide for installing spacer couplings, including preparation and alignment.

Pump Operation

Priming and Pre-Start Checks

Essential steps for priming the pump and performing pre-start inspections.

Lubrication and Maintenance

Motor and Pump Lubrication

Recommendations for motor and pump lubrication, including grease and oil types.

Bearing, Seal, and Packing Replacement

Detailed procedures for replacing pump bearings, mechanical seals, and stuffing box packing.

Fault Finding and Troubleshooting

No or Insufficient Liquid Delivery

Troubleshooting common causes for lack of liquid or low delivery rates.

Pressure, Power, and Noise Issues

Addresses problems with low pressure, high power consumption, and cavitation noise.

Overload, Vibrations, and Overheating

Troubleshooting steps for motor overload, pump vibrations, and bearing overheating.

Intermittent Operation and Leaks

Diagnoses causes for pumps stopping intermittently or losing liquid.

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