Grundfos NK Montage- Und Betriebsanleitung Seite 10

English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1. Symbols used in this document
2. General information
3. Delivery and handling
3.1 Delivery
3.2 Handling
4. Identification
4.1 Nameplate
4.2 Type key
4.3 Impeller diameter
4.4 Pumped liquids
5. Technical data
5.1 Ambient temperature
5.2 Liquid temperature
5.3 Operating pressure
5.4 Minimum inlet pressure
5.5 Maximum inlet pressure
5.6 Minimum flow rate
5.7 Maximum flow rate
5.8 Electrical data
5.9 Weight
5.10 Sound level
5.11 Pump speed relative to material and size
5.12 Belt drive
5.13 Operation with combustion engine
6. Mechanical installation
6.1 Preparations before installation
6.2 Foundation and grouting of horizontally mounted NK,
NKG pumps with base frame
6.3 Alignment
6.3.1 General
6.3.2 How to align the unit
6.4 Pipework
6.4.1 Piping
6.4.2 Direct mounting in pipework
6.4.3 Bypass
6.5 Vibration dampening
6.5.1 Elimination of noise and vibrations
6.5.2 Vibration dampers
6.6 Expansion joints
6.7 Bearing bracket
6.7.1 Bearing bracket with automatic grease lubricators
6.7.2 Bearing bracket with constant-level oiler
6.8 Bearing monitoring
6.8.1 Vibration level
6.8.2 Temperature
6.9 Pressure monitoring
7. Flange forces and torques
8. Electrical connection
8.1 Motor protection
8.2 Frequency converter operation
9. Start-up
9.1 General
9.2 Priming
9.3 Checking the direction of rotation
9.4 Start-up
9.5 Start/stop
9.6 Reference readings of monitoring equipment
10. Maintenance
10.1 Pump
10.1.1 Mechanical shaft seals
10.1.2 Stuffing box
10.2 Lubrication of bearings in bearing bracket
10.2.1 Grease-lubricated bearings
10.2.2 Oil-lubricated bearings
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10.3 Monitoring equipment
10.4 Motor
10.4.1 Lubrication
10.4.2 Bearing grease
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11. Periods of inactivity and frost protection
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12. Service
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12.1 Service kits
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13. Calculation of minimum inlet pressure
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14. Fault finding
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15. Disposal
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Warning
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Prior to installation, read these installation and
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operating instructions. Installation and operation
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must comply with local regulations and accepted
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codes of good practice.
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1. Symbols used in this document
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Warning
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If these safety instructions are not observed,
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it may result in personal injury!
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If these safety instructions are not observed,
Caution
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it may result in malfunction or damage to the
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equipment!
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Notes or instructions that make the job easier
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Note
and ensure safe operation.
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