Desmi NSL 100-215 User Manual (English)

Questions and Answers:

K
Karen JonesAug 9, 2025
Why does my Desmi NSL 100-215 have low capacity?
- A
  Anthony GuzmanAug 9, 2025
  If your Desmi Water Pump has no or low capacity, several issues could be the cause. First, the direction of rotation might be wrong; change it to clockwise when viewed from the shaft end, following the arrow's direction. Another reason may be that the piping system or the pump itself is choked; in that case, clean or replace the piping system, or clean the pump. Suction line leaks could also be the problem; find and repair any leaks, ensuring the non-return valve is submerged. Finally, check if the suction lift is too high by referring to the data sheet Q/H curve and NPSH, or the pump and piping system may be wrongly dimensioned.
J
Joshua PachecoAug 18, 2025
Why is my Desmi NSL 100-215 Water Pump using too much power?
- F
  ffordAug 18, 2025
  If your Desmi Water Pump uses too much power, several factors could be responsible. Check if the counter-pressure is too low, and consider inserting an orifice plate or check valve. A foreign body in the pump can also cause this issue, so dismantle the pump and remove any obstructions. Also, ensure that the electric motor is running on all phases by checking fuses, cable connections, and cables. If the liquid is heavier than water, contact DESMI.
A
amurilloAug 29, 2025
What to do if Desmi Water Pump suction line leaks?
- M
  Michael ReedAug 29, 2025
  If your Desmi Water Pump has no or too low capacity, it could be due to suction line leaks. Find the leakage and repair the fault, ensuring the non-return valve is submerged. Also check if the pump takes in air.

Desmi NSL 100-215 Specifications

General

Brand	Desmi
Model	NSL 100-215
Category	Water Pump
Language	English

Summary

2. SAFETY

2.1. Key to safety symbols/markings

Explains the meaning of signal words and hazard symbols used throughout the manual for safety communication.

2.2. Intended use

Defines the proper operating conditions and intended applications for the pump set.

2.3. Consequences and risks caused by non-compliance with this manual

Details the risks and potential consequences of not following the manual's safety instructions.

2.5. Safety information for the operator/user

Provides essential safety information and responsibilities for pump operators and users.

2.6. Safety information for maintenance, inspection and installation

Outlines critical safety procedures for maintenance, inspection, and installation activities.

2.8. Explosion protection

Provides guidelines for operating pumps in potentially explosive atmospheres, referencing ATEX.

4. TECHNICAL SPECIFICATION

4.1. Work range

Defines the operational parameters including media and ambient temperature ranges, density, and viscosity.

4.2. Technical data

Presents detailed technical specifications such as vibration, pressure, speed, and noise emission.

4.3. Name plate

Explains how to interpret the information provided on the pump's name plate.

4.4. Dimensional drawing

Provides detailed dimensional drawings and tables for various pump combinations.

5. INSTALLATION

5.1. Mounting / Fastening

Details the procedures for correctly mounting and fastening the pump set to a foundation.

5.2. Wiring

Provides essential safety warnings and guidelines for electrical wiring connections.

Pump installation foundation

Specifies requirements for the pump installation foundation and pipe connections.

Allowable vibration levels on the pumps

Defines acceptable vibration levels and potential causes of damage.

Maximum suction up height (suction lift)

Explains how to calculate and ensure adequate suction lift to prevent cavitation.

6. COMMISSIONING, START-UP AND SHUTDOWN

6.1. Prerequisites for commissioning / start-up

Lists the essential conditions that must be met before commissioning or starting the pump set.

6.2. Priming and venting the pump

Describes the critical steps for priming and venting the pump to prevent dry running and hazards.

6.3. Start up

Details the safe start-up procedures, including warnings about hazards and proper operation.

6.3.1. Start-up procedure

Provides a step-by-step procedure for the initial start-up of the pump.

6.4. Checking the shaft seal

Explains how to check the condition of the mechanical shaft seal during operation.

6.5. Shut down

Outlines the correct procedures for shutting down the pump set safely.

6.6. Operating limits

Specifies the operating limits for pressure, temperature, and fluid handling.

6.8. Fluid handled

Discusses considerations for handling different types of fluids, including density and abrasiveness.

7. TROUBLESHOOTING

Mechanical seal failure analysis

Analyzes common mechanical seal failures, their impacts, indications, and avoidance methods.

8. INSPECTION AND SERVICE PLAN

8.1. Supervision of operation

Provides safety warnings and guidelines for supervising pump operation.

Inspection and maintenance intervals for normal applications:

Details inspection and maintenance schedules based on calendar time or running hours.

BEARINGS in 12 combination

Describes bearing specifications and lubrication requirements for 12 combination pumps.

BEARINGS in 02 combination

Details bearing specifications and lubrication requirements for 02 combination pumps.

BEARINGS in 13 combination and 14 combination

Outlines bearing specifications and relubrication for 13 and 14 combination pumps.

Inspection work

Describes specific inspection tasks, including cleaning filters and checking drainage.

9. DISMANTLING THE PUMP SET

9.1. 02 and 12 combinations

Specific dismantling procedures for the 02 and 12 pump combinations.

9.1.1. Access to impeller

Details how to access the impeller for inspection or replacement in 02/12 combinations.

9.1.2. Dismantling shaft seal

Instructions for dismantling the shaft seal in 02/12 combinations.

9.2. 13 and 14 combinations

Specific dismantling procedures for the 13 and 14 pump combinations.

9.2.1. Access to impeller

Details how to access the impeller for inspection or replacement in 13/14 combinations.

9.2.2. Dismantling shaft seal

Instructions for dismantling the shaft seal in 13/14 combinations.

10. ASSEMBLING THE PUMP SET

10.1. 12 combination

10.1.1. Fitting sealing rings

10.1.2. Fitting shaft seal

10.1.3. Fitting impeller

10.2. 02, 13 and 14 combinations

10.2.1. Fitting sealing rings

10.2.2. Fitting bearings or shaft with bearings

10.2.4. Fitting shaft seal

10.2.5. Fitting impeller

10.2.8. Fitting coupling

11. ORDERING SPARE PARTS

NSL /-02 combination

NSL /-12 combination

NSL /-13/14 combinations

11.2. Spare parts list NSL-215/265 -02 combination

11.4. Spare parts list NSL-215/265 -12 combination

11.6. Spare parts list NSL-215/265 -S12 combination

11.8. Spare parts list NSL-330/415/465 -02 combination

11.10. Spare parts list NSL-330/415/465 -12 combination

11.12. Spare parts list NSL300-418 -02 combination

11.14. Spare parts list NSL300-418 -12 combination

11.16. Spare parts list NSL200/250/300-525 -02 combination

11.18. Spare parts list NSL200/250/300-525 -12 combination

11.20. Spare parts list NSL350-525 -02 combination

11.22. Spare parts list NSL350-525 -14 combination

11.24. Spare parts list NSL-215/265 -14 combination

11.26. Spare parts list NSL-330/415/465 -14 combination

11.28. Spare parts list NSL300-418 -14 combination

11.30. Spare parts list NSL200/250/300-525 -14 combination

11.32. Spare parts list NSL350-525 -14 combination

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16 pages

Desmi NSL 100-215 User Manual

Table of Contents

Questions and Answers:

Desmi NSL 100-215 Specifications

Summary

2. SAFETY

2.1. Key to safety symbols/markings

2.2. Intended use

2.3. Consequences and risks caused by non-compliance with this manual

2.5. Safety information for the operator/user

2.6. Safety information for maintenance, inspection and installation

2.8. Explosion protection

4. TECHNICAL SPECIFICATION

4.1. Work range

4.2. Technical data

4.3. Name plate

4.4. Dimensional drawing

5. INSTALLATION

5.1. Mounting / Fastening

5.2. Wiring

Pump installation foundation

Allowable vibration levels on the pumps

Maximum suction up height (suction lift)

6. COMMISSIONING, START-UP AND SHUTDOWN

6.1. Prerequisites for commissioning / start-up

6.2. Priming and venting the pump

6.3. Start up

6.3.1. Start-up procedure

6.4. Checking the shaft seal

6.5. Shut down

6.6. Operating limits

6.8. Fluid handled

7. TROUBLESHOOTING

Mechanical seal failure analysis

8. INSPECTION AND SERVICE PLAN

8.1. Supervision of operation

Inspection and maintenance intervals for normal applications:

BEARINGS in 12 combination

BEARINGS in 02 combination

BEARINGS in 13 combination and 14 combination

Inspection work

9. DISMANTLING THE PUMP SET

9.1. 02 and 12 combinations

9.1.1. Access to impeller

9.1.2. Dismantling shaft seal

9.2. 13 and 14 combinations

9.2.1. Access to impeller

9.2.2. Dismantling shaft seal

10. ASSEMBLING THE PUMP SET

10.1. 12 combination

10.1.1. Fitting sealing rings

10.1.2. Fitting shaft seal

10.1.3. Fitting impeller

10.2. 02, 13 and 14 combinations

10.2.1. Fitting sealing rings

10.2.2. Fitting bearings or shaft with bearings

10.2.4. Fitting shaft seal

10.2.5. Fitting impeller

10.2.8. Fitting coupling

11. ORDERING SPARE PARTS

NSL /-02 combination

NSL /-12 combination

NSL /-13/14 combinations

11.2. Spare parts list NSL-215/265 -02 combination

11.4. Spare parts list NSL-215/265 -12 combination

11.6. Spare parts list NSL-215/265 -S12 combination

11.8. Spare parts list NSL-330/415/465 -02 combination

11.10. Spare parts list NSL-330/415/465 -12 combination

11.12. Spare parts list NSL300-418 -02 combination

11.14. Spare parts list NSL300-418 -12 combination

11.16. Spare parts list NSL200/250/300-525 -02 combination

11.18. Spare parts list NSL200/250/300-525 -12 combination

11.20. Spare parts list NSL350-525 -02 combination

11.22. Spare parts list NSL350-525 -14 combination

11.24. Spare parts list NSL-215/265 -14 combination

11.26. Spare parts list NSL-330/415/465 -14 combination

11.28. Spare parts list NSL300-418 -14 combination

11.30. Spare parts list NSL200/250/300-525 -14 combination

11.32. Spare parts list NSL350-525 -14 combination

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