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Speck pumpen VU Series - User Manual

Speck pumpen VU Series
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Operating Instructions
VU / VH Series
VU 20 - 1600
VH 20 - 1600
Liquid Ring Vacuum Pumps
English translation of the original operating
instructions
Documentation
It is imperative to read the operating instruc-
tions prior to commissioning!
This document as well as all documents in-
cluded in the appendix is not subject to any
update service!
Subject to technical changes.
Speck Pumpen Vakuumtechnik GmbH
Regensburger Ring 6 – 8, 91154 Roth / Germany
PO Box 1453, 91142 Roth / Germany
Phone: +49 (0) 9171 809 0
Fax: +49 (0) 9171 809 10
E-mail: info@speck-pumps.de
Internet: www.speck-pumps.de
Issue:
10/2010
Supersedes issue:
06/2010
Doc./ Item no.:
1096.0799

Table of Contents

Questions and Answers

  • D
    Denise MillerAug 17, 2025
    What to do if my Speck pumpen Water Pump motor protection is triggered?
    • R
      robert08Aug 17, 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.
  • B
    Briana GutierrezAug 21, 2025
    Why is my Speck pumpen Water Pump motor consuming excessive power?
    • M
      Marcus SandovalAug 21, 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.
  • C
    Christopher RobinsonAug 26, 2025
    What to do if my Speck pumpen VU Water Pump is leaking?
    • A
      Andrew FordAug 26, 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.
  • L
    Lisa DaltonAug 28, 2025
    Why is my Speck pumpen Water Pump not producing vacuum?
    • S
      Shannon LynchAug 28, 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.
  • T
    Terry LeeSep 1, 2025
    Why is my Speck pumpen Water Pump not running smoothly?
    • D
      Daniel GonzalezSep 1, 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.
  • C
    Claudia LyonsSep 9, 2025
    Why is my Speck pumpen Water Pump making a strange noise?
    • L
      lawsonmargaretSep 9, 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.
  • K
    kendra02Nov 12, 2025
    Why is my Speck pumpen Water Pump motor not starting?
    • J
      jonathanbellNov 13, 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

Target Groups and Their Tasks

Defines user roles and responsibilities for operating the pump.

Applicable Documents

Lists documents relevant to the pump's operation and compliance.

Warnings and Symbols

Explains safety symbols and their consequences for non-compliance.

Terminology

Defines key terms used throughout the operating instructions.

Safety

Intended Use and Possible Misuse

Specifies correct usage and warns against improper applications of the pump.

General Safety Instructions

Outlines essential safety measures for operation and maintenance.

Residual and Special Risks

Identifies potential hazards like entanglement, burns, and explosive areas.

Design and Functioning

Pump Identification and Description

Covers nameplates, ATEX plates, type codes, and general pump overview.

Design and Functional Principle

Explains the liquid ring principle and internal pump design.

Shaft Sealing Systems

Details mechanical seals and packing glands used for shaft sealing.

Transport, Storage, and Disposal

Transport Procedures

Provides guidelines for unpacking, manual transport, and using lifting gear.

Storage and Preservation

Covers requirements for storing and preserving the pump.

Preserving Agent Removal and Disposal

Explains how to remove preserving agents and dispose of the pump safely.

Set-up and Connection

Set-up Preparation

Covers ambient conditions, clearances, site preparation, and foundation requirements.

Mounting Options

Details setting up the pump with or without a foundation.

Motor Installation and Pipe System Planning

Guides motor mounting and planning pipe system dimensions.

Operation

Commissioning Procedures

Covers pump identification, removing preservative, and filling the pump.

Switching Pump On and Off

Provides steps for starting and stopping the pump safely.

Operating Liquid Flow Rate Control

Explains methods for controlling the operating liquid flow.

Decommissioning and Re-commissioning

Outlines procedures for taking the pump out of service and putting it back.

Maintenance and Servicing

Monitoring and Lubrication

Covers pump monitoring and lubrication intervals for bearings.

Contamination Rinsing and Calcification Prevention

Details procedures for cleaning and preventing calcification.

Disassembly and Assembly Procedures

Provides detailed steps for dismantling and reassembling pump components.

Technical Data

Operating Limit Values

Lists critical operating parameters and limits for different pump types.

General Technical Data

Provides specifications like weight, power, connections, and ambient conditions.

Tightening Torques

Specifies torque values for various screws, nuts, and plugs during assembly.

Permissible Forces and Torques

Details allowable forces and torques on pump nozzles and adjustment dimensions.

Lubricants and Preserving Agents

Lists recommended lubricants and volumes for preserving agents.

Appendix

Dimension Drawings

Contains detailed dimensional drawings for various pump models.

Cross-sectional Drawings

Provides detailed cross-sectional views with part numbers for pump assembly.

Conformity Documentation

Includes certificate and EC declaration of conformity for the pump.

Speck pumpen VU Series Specifications

General IconGeneral
BrandSpeck pumpen
ModelVU Series
CategoryWater Pump
LanguageEnglish

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