Speck pumpen VH 300 - User Manual

Questions and Answers

W
William BarrettAug 15, 2025
What to do if my Speck pumpen Water Pump motor protection is triggered?
- J
  Jeffrey SextonAug 15, 2025
  If the motor protection of your Speck pumpen Water Pump is triggered, it could be due to several reasons: * There may be a short-circuit in the motor winding. Check the motor winding. * The motor protection switch might not be correctly set or is defective. Check the setting or replace the switch. * The motor may be overloaded. Check and reduce the operating liquid flow rate. * There could be excessive backpressure in the outlet nozzle. Reduce backpressure. * There might be an excessive share of liquid in the suction flow. Reduce the share of liquid. * The suction-side fitting may be blocked. Open the suction-side fitting.
J
Joseph WalkerAug 20, 2025
Why is my Speck pumpen Water Pump motor consuming excessive power?
- M
  Melissa SmithAug 20, 2025
  Excessive power consumption in your Speck pumpen Water Pump motor can occur due to: * Motor overload: Check and reduce the operating liquid flow rate. * Excessive backpressure: Reduce backpressure in the outlet nozzle. * Excessive share of liquid: Reduce the share of liquid in the suction flow. * Blocked suction-side fitting: Open the suction-side fitting. * High density/viscosity: Use an operating liquid complying with the density recommended in the data sheet. * Impeller rubbing: Disassemble the pump and properly set the inter casing/impeller gap size. * Pump contamination/calcification: Flush, descale, or disassemble the pump and clean it.
J
Judith ShermanAug 23, 2025
What to do if my Speck pumpen Water Pump is leaking?
- B
  bparkerAug 23, 2025
  If your Speck pumpen Water Pump is leaking, consider the following potential causes: * A defective shaft sealing. Replace the shaft sealing. * A defective casing sealing. Provide the vacuum pump with new sealing. * Worn-out casing components. Replace the affected components. * Loosened connecting screws or screw plugs. Tighten the screws and replace the sealing.
M
martin12Aug 27, 2025
Why is my Speck pumpen Water Pump not producing vacuum?
- C
  christinamontesAug 27, 2025
  If your Speck pumpen Water Pump is not producing vacuum, it could be due to: * A lack of operating liquid. Check the operating liquid supply. * A leak in the suction pipe. Check and seal the suction pipe and connections. * The wrong direction of motor rotation. Check the direction of rotation and swap the 2 phases if necessary.
A
amanda32Aug 31, 2025
Why is my Speck pumpen VH 300 Water Pump not running smoothly?
- B
  Benjamin AndersonAug 31, 2025
  If your Speck pumpen Water Pump isn't running smoothly, here are some possible causes: * Excessive operating liquid flow rate: Reduce the operating liquid flow rate. * Overload in the pipe system: Check the pipe connections, pump fixation, and bearing clearance of the pipe clamps. * Air pocket in the pipe: Change the pipe system layout. * Pump distorted/improperly adjusted: Check and re-adjust the pump. * Resonance vibrations in the pipe system: Check the pipe connections and, if required, use a compensator. * Imbalanced impeller: Balance or replace the impeller. * Deposits on the impeller: Clean or replace the impeller. * Defective pump or motor bearing: Replace the pump or motor bearing.
K
Kimberly JohnsonSep 7, 2025
Why is my Speck pumpen Water Pump making a strange noise?
- K
  karlrobertsSep 7, 2025
  Strange noises from your Speck pumpen Water Pump can result from: * Pump cavitation: Install an anti-cavitation valve or equip the suction pipe with a ventilation valve. * Excessive steam: Reduce the share of steam or provide for condensation upstream the vacuum pump. * Suction-side fitting closed: Open the suction-side fitting or provide for cavitation protection. * Excessive operating liquid flow rate: Reduce operating liquid flow rate.
J
Jason BraunNov 11, 2025
Why is my Speck pumpen Water Pump motor not starting?
- A
  Anthony TurnerNov 11, 2025
  There are several reasons why the motor of your Speck pumpen Water Pump may not be starting: * A phase of the power supply could be interrupted. Check the power supply and the motor. * The motor protection switch may have tripped. Try switching it on. * The motor might be blocked. Inspect the motor. * There might be corrosion inside impeller/inter casing. Use rust remover to overcome the blockage of the pump. * Ice could be inside the pump. Carefully heat up and defrost the pump. * Contaminations or foreign bodies may be present inside the pump. Flush or disassemble the pump and clean it. * The pump may have calcified. Descale the pump. * The impeller could be blocked or defective. Correct the gap size of the inter casing/impeller or replace it. * The motor bearing may b...

Summary

Important basic information

1.1 Target groups

Defines the target audience for the operating instructions and their respective tasks.

1.2 Applicable documents

Lists documents that are relevant for the operation of the pump/aggregate.

1.3 Warnings and symbols

Explains the different warning levels and symbols used in the manual.

1.4 Terminology

Provides definitions for technical terms used throughout the operating instructions.

Safety

2.1 Intended use

Specifies the proper and intended applications for the pump/aggregate.

2.2 Possible misuse

Details incorrect or unsafe ways the pump/aggregate should not be used.

2.3 General safety instructions

Provides essential general safety guidelines for operating the pump/aggregate.

2.4 Residual risks

Identifies potential risks that remain even after safety precautions are taken.

2.5 Special risks

Highlights specific risks associated with potentially explosive areas and dangerous media.

Design and functioning

3.1 Marking

Details the nameplate and ATEX plate information for product identification.

3.2 General description

Provides a general overview of the VU series liquid ring vacuum pumps and their construction.

3.3 Design and functional principle

Explains the working principle of the liquid ring vacuum pumps with diagrams.

3.4 Shaft sealing

Describes the types of shaft sealing used, including mechanical seals and packing glands.

Transport, storage and disposal

4.1 Transport

Instructions for safe transport, unpacking, manual handling, and lifting operations.

4.2 Storage

Guidance on proper storage conditions and procedures to maintain the pump's integrity.

4.3 Preservation

Procedures for preserving the pump/aggregate, both inside and outside the system.

4.4 Removing preserving agent

Instructions on how to safely remove preserving agents before commissioning.

4.5 Disposal

Guidelines for the environmentally sound disposal of the pump/aggregate and its components.

Set-up and connection

5.1 Preparing set-up

Covers checks for ambient conditions, clearances, installation site, and foundation preparation.

5.2 Set-up with foundation

Details the process of placing and fixing the aggregate on a foundation.

5.3 Set-up without foundation

Instructions for setting up the aggregate without a foundation, typically with a base plate.

5.4 Set-up on torsion-resistant level surface;frame

Guidance for mounting the aggregate on a torsion-resistant surface or frame.

5.5 Motor installation

Steps for installing the motor onto the base plate during aggregate set-up.

5.6 Planning pipe system

Covers pipe system planning, including dimensioning, supports, and safety devices.

5.7 Connecting pipes

Covers clean piping practices and installation of suction and pressure pipes.

5.8 Coupling and Motor Alignment

Details coupling adjustment, checking, and motor alignment for proper operation.

5.10 Electrical Connection and Safety

Covers motor connection, safety checks, and verifying correct direction of rotation.

Operation

6.1 Preparations for commissioning

Covers identifying pump type, removing preserving agent, and filling the pump for operation.

6.2 Commissioning and Switch-off

Covers the procedures for switching the pump/aggregate on and off safely.

6.3 Operating Liquid Flow Rate

Details setting the operating liquid flow rate for continuous and open circulation cooling.

6.3.3 Closed circulation cooling

Explains how to set the operating liquid flow rate for closed circulation cooling.

6.4 Decommissioning

Provides instructions for safely decommissioning the pump/aggregate.

6.5 Re-commissioning

Outlines the steps for re-commissioning the pump/aggregate after a period of inactivity.

6.6 Operating stand-by aggregate

Guidance for operating standby aggregates, including periodic operation.

Maintenance and servicing

7.1 Monitoring and Lubrication

Covers monitoring procedures, inspection intervals, and lubrication intervals for rolling bearings.

7.3 Rinsing Contaminations

Instructions for cleaning the pump/aggregate by rinsing off minor and major contaminations.

7.4 Preventing Calcification

Guidance on preventing calcification by controlling operating liquid properties.

7.5 Disassembly and Repairs

Details disassembly procedures, spare parts ordering, and general repair observations.

7.5.4 Disassembly of VU 20;40, VH 20;40;60

Detailed steps for disassembling specific VU 20/40 and VH 20/40/60 pump models.

7.5.5 Disassembly of VU 80;140;220 VH 110;140;180

Detailed steps for disassembling specific VU 80/140/220 and VH 110/140/180 pump models.

7.5.6 Disassembly of VU 300;450, VH 300;350;400

Detailed steps for disassembling specific VU 300/450 and VH 300/350/400 pump models.

7.5.7 Disassembly of VU 351;451

Detailed steps for disassembling specific VU 351/451 pump models.

7.5.8 Disassembly of VU 500;600;800;1200;1600

Detailed steps for disassembling specific VU 500-1600 pump models.

7.5.9 Preparations for assembly

Essential preparations and precautions for correctly assembling the pump/aggregate.

7.5.10 Assembly of VU 20;40, VH 20;40;60

Detailed assembly steps for VU 20/40 and VH 20/40/60 pump models.

7.5.11 Assembly of VU 80;140;220, VH 110;140;180

Detailed assembly steps for VU 80/140/220 and VH 110/140/180 pump models.

7.5.12 Assembly of VU 300;450, VH 300;350;400

Detailed assembly steps for VU 300/450 and VH 300/350/400 pump models.

7.5.13 Assembly of VU 351;451

Detailed assembly steps for VU 351/451 pump models.

7.5.14 Assembly of VU;VH 500;600;800;1200;1600

Detailed assembly steps for VU/VH 500-1600 pump models.

Troubleshooting

Motor does not start

Identifies causes and rectifications when the motor fails to start.

Pump is blocked

Lists reasons for a blocked pump and how to resolve them.

Motor protection triggered

Addresses causes for motor protection tripping and rectifications.

Excessive power consumption of the motor

Explains causes for high motor power consumption and corrective actions.

Pump does not produce vacuum

Troubleshoots issues related to the pump not producing vacuum and its potential causes.

Insufficient vacuum

Addresses causes for insufficient vacuum and recommended corrective measures.

Strange noise

Guides on identifying and resolving sources of strange noises from the pump.

Leaking pump

Provides solutions for a leaking pump, focusing on shaft and casing sealing.

Pump does not run smooth

Troubleshooting steps for a pump that is not running smoothly, including alignment and balance.

Technical data

9.1 Operating limit values

Lists the operating limit values for various pump models, including pressure, temperature, and viscosity.

9.1.1 Media to be pumped

Specifies the types of media suitable for pumping with the vacuum pump.

9.1.2 Operating liquid

Details the requirements for the operating liquid, including pH value and purity.

9.1.3 Switching frequency

Specifies the maximum permissible switching frequency for the aggregate.

9.2 General technical data

Provides general technical specifications for the pump/aggregate series.

9.2.1 Weight

Lists the weight of different pump models for handling and installation planning.

9.2.2 Sound level

Provides measured surface sound pressure levels for various pump models.

9.2.3 Drive power

Lists rated motor power, speed, and direction of rotation for different pump types.

9.2.4 Operating liquid

Provides details on operating liquid requirements, flow rate, and delivery.

9.2.4.3 Filling volume

Lists the filling volumes for the pump/aggregate, both inside and outside the system.

9.2.5 Medium to be pumped

Specifies suitable media for pumping, with advice for special media.

9.2.6 Operating connections

Details the connection sizes and types for process water, suction, and pressure ports.

9.2.7 Mechanical seal

Describes the features of the mechanical seals used in the pumps.

9.2.8 Ambient conditions

Specifies the acceptable ambient temperature, humidity, and altitude for operation.

9.2.9 Clearances for heat dissipation

Lists minimum clearances required around the fan hood for heat dissipation.

9.2.10 Tightening Torques

Specifies tightening torques for various fasteners and connections to ensure proper assembly.

9.2.10.6 Impeller nuts

Lists tightening torques for impeller nuts based on pump type.

9.2.10.7 Shaft nut for fixed bearings

Provides tightening torques for shaft nuts used in fixed bearings.

9.2.10.8 Casing bolts

Specifies tightening torques for casing bolts.

9.3 Conical pipe fittings

Notes that standard tightening torques do not apply to conical screw-in threads.

9.4 Permissible forces; torques acting on the pump nozzles

Lists permissible forces and torques that can act on the pump nozzles for system design.

9.4.1 Adjustment dimensions

Provides adjustment dimensions for impeller gaps in various pump models.

9.4.1.3 Impeller position VH 110-1600;VU 80-1600

Lists impeller position adjustment dimensions for specific VH and VU pump series.

9.4.1.4 Shaft bearing clearance

Details shaft bearing clearance for pumps equipped with spherical roller bearings.

9.5 Lubricants

Specifies the type and amount of lubricant required for bearings.

9.6 Preserving agents

Details the recommended preserving agents and their filling volumes.

9.7 Test pressure for pressure test

Specifies the test pressure and medium for pressure testing the pump.

9.8 Accessories

Lists accessories included in the scope of supply.

Appendix

10.1 Dimension drawing VU 20;40

Provides dimension drawings for VU 20 and VU 40 pump models.

10.2 Dimension drawing VU 80;140;220

Provides dimension drawings for VU 80, VU 140, and VU 220 pump models.

10.3 Dimension drawing VU 300;450

Provides dimension drawings for VU 300 and VU 450 pump models.

10.4 Dimension drawing VU 351;451

Provides dimension drawings for VU 351 and VU 451 pump models.

10.5 Dimension drawing VU 500;600

Provides dimension drawings for VU 500 and VU 600 pump models.

10.6 Dimension drawing VU 800;1200;1600

Provides dimension drawings for VU 800, VU 1200, and VU 1600 pump models.

10.7 Dimension drawing VH 20;40;60

Provides dimension drawings for VH 20, VH 40, and VH 60 pump models.

10.8 Dimension drawing VH 110;140;180

Provides dimension drawings for VH 110, VH 140, and VH 180 pump models.

10.9 Dimension drawing VH 300;350;400

Provides dimension drawings for VH 300, VH 350, and VH 400 pump models.

10.10 Dimension drawing VH 500;600

Provides dimension drawings for VH 500 and VH 600 pump models.

10.11 Dimension drawing VH 800;1200;1600

Provides dimension drawings for VH 800, VH 1200, and VH 1600 pump models.

10.12 Cross-sectional drawing VU 20-450

Shows a cross-sectional view of VU 20-450 pumps with part numbers.

10.13 Cross-sectional drawing VU 351;451

Shows a cross-sectional view of VU 351/451 pumps with part numbers.

10.14 Cross-sectional drawing VU 500-1600

Shows a cross-sectional view of VU 500-1600 pumps with part numbers.

10.15 Cross-sectional drawing VH 20-400

Shows a cross-sectional view of VH 20-400 pumps with part numbers.

10.16 Cross-sectional drawing VH 500-1600

Shows a cross-sectional view of VH 500-1600 pumps with part numbers.

10.17 Certificate of conformity

A form for certifying the conformity of the pump/aggregate, including its usage and handling.

10.18 EC declaration of conformity

The official EC declaration of conformity for the pump units, referencing relevant directives.

Speck pumpen VH 300 Specifications

General

Brand	Speck pumpen
Model	VH 300
Category	Water Pump
Language	English

Related product manuals

Speck pumpen VH Series

Speck pumpen VU Series

63 pages

Speck pumpen VH 300 - User Manual

Table of Contents

Questions and Answers

Summary

Important basic information

1.1 Target groups

1.2 Applicable documents

1.3 Warnings and symbols

1.4 Terminology

Safety

2.1 Intended use

2.2 Possible misuse

2.3 General safety instructions

2.4 Residual risks

2.5 Special risks

Design and functioning

3.1 Marking

3.2 General description

3.3 Design and functional principle

3.4 Shaft sealing

Transport, storage and disposal

4.1 Transport

4.2 Storage

4.3 Preservation

4.4 Removing preserving agent

4.5 Disposal

Set-up and connection

5.1 Preparing set-up

5.2 Set-up with foundation

5.3 Set-up without foundation

5.4 Set-up on torsion-resistant level surface;frame

5.5 Motor installation

5.6 Planning pipe system

5.7 Connecting pipes

5.8 Coupling and Motor Alignment

5.10 Electrical Connection and Safety

Operation

6.1 Preparations for commissioning

6.2 Commissioning and Switch-off

6.3 Operating Liquid Flow Rate

6.3.3 Closed circulation cooling

6.4 Decommissioning

6.5 Re-commissioning

6.6 Operating stand-by aggregate

Maintenance and servicing

7.1 Monitoring and Lubrication

7.3 Rinsing Contaminations

7.4 Preventing Calcification

7.5 Disassembly and Repairs

7.5.4 Disassembly of VU 20;40, VH 20;40;60

7.5.5 Disassembly of VU 80;140;220 VH 110;140;180

7.5.6 Disassembly of VU 300;450, VH 300;350;400

7.5.7 Disassembly of VU 351;451

7.5.8 Disassembly of VU 500;600;800;1200;1600

7.5.9 Preparations for assembly

7.5.10 Assembly of VU 20;40, VH 20;40;60

7.5.11 Assembly of VU 80;140;220, VH 110;140;180

7.5.12 Assembly of VU 300;450, VH 300;350;400

7.5.13 Assembly of VU 351;451

7.5.14 Assembly of VU;VH 500;600;800;1200;1600

Troubleshooting

Motor does not start

Pump is blocked

Motor protection triggered

Excessive power consumption of the motor

Pump does not produce vacuum

Insufficient vacuum

Strange noise

Leaking pump

Pump does not run smooth

Technical data

9.1 Operating limit values

9.1.1 Media to be pumped

9.1.2 Operating liquid

9.1.3 Switching frequency

9.2 General technical data

9.2.1 Weight

9.2.2 Sound level

9.2.3 Drive power

9.2.4 Operating liquid