OMAC B Series - User Manual

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O.M.A.C. s.r.l.

Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.0522/629371 - 629923 Fax 0522/628980

E-mail:info@omacpompe.com SitoWeb:www.omacpompe.com

1

Rev.4 del 01/2011 O.M.A.C. s.r.l.

Operation and Maintenance

B Series

Lobe Positive Displacement

Group Pump Unit

Translation from the Original Instructions

O.M.M. B SERIES rev.4 01/2011 All rights reserved

O.M.A.C. S.R.L.

RUBIERA (RE) - ITALY

Table of Contents

Other manuals for OMAC B Series

Installation, Operation And Maintenance Manual52 pages

Questions and Answers

A
April RubioSep 7, 2025
Why is the GPVL of my OMAC B Series Water Pump blocking just starting?
- K
  Kristin ReyesSep 7, 2025
  If your OMAC Water Pump's GPVL is blocking just starting, there might be several reasons. Excessive medium viscosity can cause this; decrease the speed of the pump and increase the temperature of the medium. Low media temperature can also be a factor; increase the temperature of the medium and heat the pumping case (within the limits given by the manufacturer). Check for excessive back-pressure by removing possible obstructions in the outlet piping, increasing the piping diameter, and reducing its length and the number of bends. Worn-out or untimed gears can also cause the GPVL to block; replace the gears or time them according to the instructions. If parts are in contact in the pumping case, check that the design pressure coincides with the operating pressure.
N
Nicholas HinesSep 10, 2025
What to do if my OMAC B Series is still overheating?
- G
  gregorywarrenSep 10, 2025
  If your OMAC Water Pump continues to overheat, even after initial troubleshooting, check if parts are in contact in the pumping case, and ensure that the design pressure coincides with the operating pressure. Also, examine the relief valve for leaks; check its setting, clean sealing parts, and substitute worn parts if necessary.
F
freywhitneySep 12, 2025
What causes fast seals wear in my OMAC Water Pump?
- T
  Taylor SheltonSep 12, 2025
  If your OMAC Water Pump is experiencing fast seal wear, it could be due to a few reasons. The presence of suspended particles in the medium can cause this; clean the suction piping and install a filter on it. If the packing gland is too tight, this can also lead to fast seal wear; loosen the packing gland and tighten it correctly, following the instructions. Insufficient flushing seal liquid level can be another cause; check the flushing seal liquid and, if necessary, increase its flow-rate.
C
Christopher HebertNov 15, 2025
What to do if my OMAC Water Pump has no flow-rate?
- K
  Kathleen DoyleNov 15, 2025
  If your OMAC Water Pump has no flow rate, first check if the rotation direction is wrong and invert it, if needed. Also, the pump may be unprimed; in this case, fill the pumping case and feeding piping with liquid, expelling air. Insufficient N.P.S.H. could be another cause, so increase the head and the piping inlet diameter, reduce the suction piping length and the number of bends, and decrease the speed of the pump and the temperature of the medium, ensuring the temperature decrease suits the motor power. The presence of air in the suction could also be the reason; increase the medium level and lower the suction opening position. Check for a dirty or blocked valve or suction filter and clean the filters if necessary. Finally, a leaking relief valve can cause this issue; check its setting...
V
Victor JonesNov 18, 2025
Why is my OMAC B Series Water Pump overheating?
- S
  Scott FieldsNov 18, 2025
  If your OMAC Water Pump is overheating, several factors could be responsible. Excessive medium viscosity can cause overheating; decrease the pump speed and increase the medium temperature. High medium temperature is another potential cause; decrease the medium temperature and cool the pumping case. Check for excessive back-pressure by removing obstructions in the outlet piping, increasing the piping diameter, and reducing its length and the number of bends. A too-tight packing gland can also lead to overheating; loosen the packing gland and tighten it correctly, following the instructions. Ensure that the piping is not pressing on the pumping case by checking the piping alignment, fitting flexible expansion joints if necessary, and fixing the piping on the plant structure. Misalignment of ...
R
rachelhartNov 21, 2025
Why is my OMAC B Series Water Pump so noisy and vibrating?
- A
  Andrea ThomasNov 21, 2025
  If your OMAC Water Pump is experiencing noise and LDPU vibration, consider the following potential causes. Insufficient N.P.S.H. (Net Positive Suction Head) can lead to these issues; increase the head and piping inlet diameter, reduce the suction piping length and the number of bends, and decrease the pump speed and medium temperature, ensuring the temperature decrease suits the motor power. Medium evaporation in the inlet or air entering the inlet can also cause noise and vibration; increase the head and piping inlet diameter, reduce the suction piping length and the number of bends, decrease the pump speed and medium temperature, check and tighten suction piping connections, and tighten the packing glands, replacing them if necessary. The presence of air in the suction or not enough liqu...
T
Tony WeberNov 23, 2025
What causes low flow-rate in my OMAC B Series's LDPU?
- L
  Lisa HudsonNov 23, 2025
  If your OMAC Water Pump's LDPU has a low flow-rate, several factors could be responsible. Insufficient N.P.S.H. could be the cause; increase the head and the piping inlet diameter, reduce the suction piping length and the number of the bends, decrease the speed of the pump and the temperature of the medium, and check that the increase (caused by the decreasing temperature) is suitable to the motor power. If the medium evaporates in the inlet, take the same steps as for insufficient N.P.S.H. Air entering in inlet can also cause low flow; check and tighten suction piping connections and tighten the packing glands, replacing them if necessary. If there's air in the suction, fill pumping case and feeding piping with liquid, expelling air. A low liquid level in the tank in the suction requires ...
T
Thomas BarrettNov 26, 2025
Why is the motorization of my OMAC B Series overheating?
- P
  Patricia MillsNov 26, 2025
  If the motorization of your OMAC Water Pump is overheating, it could be due to several reasons. Low medium temperature might be the cause; increase the temperature of the medium and heat the pumping case, staying within the manufacturer's limits. Excessive medium viscosity can also lead to overheating; decrease the speed of the pump and increase the temperature of the medium. Check for excessive back-pressure by removing obstructions in the outlet piping, increasing the piping diameter, and reducing its length and the number of bends. A too-tight packing gland can also cause this issue; loosen the packing gland and tighten it correctly, following the instructions. Excessive pump speed can contribute to overheating; decrease the speed of the pump. Ensure that the piping is not pressing on t...
N
Nicholas LaneDec 1, 2025
What causes the seizure of my OMAC B Series Water Pump?
- J
  Jennifer PhillipsDec 1, 2025
  If your OMAC Water Pump experiences seizure, it could be due to several reasons. Excessive medium temperature can cause this; decrease the temperature of the medium and cool the pumping case. The presence of suspended particles in the medium can also lead to seizure; clean the suction piping and install a filter on it. Excessive back-pressure can be a factor; remove any obstructions in the outlet piping, increase the piping diameter, and reduce its length and the number of bends. A packing gland that is too tight can also cause seizure; loosen the packing gland and tighten it correctly, following the instructions. Check that the piping is not pressing on the pumping case by verifying the piping alignment, fitting flexible expansion joints if necessary, and fixing the piping on the plant st...
R
Robert EspinozaDec 3, 2025
Why does my OMAC Water Pump GPVL have high power absorption?

Summary

Chapter 1: Machine and Pumped Fluid Specifications

Technical Features and Dimensions

Covers technical data, dimensions, materials, and optional pump features.

Intended Use and Guidelines

Defines intended applications and recommended guidelines for fluid transfer.

Safety Systems Overview

Details safety systems, protection features, and emergency controls.

Noise, Vibrations, and PPE

Information on noise levels, vibrations, and required personal protective equipment.

Chapter 2: LDPU B Series Transportation

Handling and Transportation

Provides instructions for safe lifting, transport, and unpacking of the LDPU.

Storage Conditions

Guidelines for storing the LDPU during extended interruptions or after use.

Chapter 3: LDPU B Series Installation

Environment and Installation Requirements

Covers intended environments, ambient conditions, and installation space.

Installation and Assembly Steps

Details the process of installing and assembling the LDPU unit and accessories.

Utility Connections

Instructions for connecting electrical, hydraulic, and pneumatic systems.

Cleaning and Hygiene Procedures

Methods for cleaning LDPU for alimentary and chemical use, including CIP/SIP.

Chapter 4: Use of the B Series LDPU

Intended Use and Controls

Defines LDPU intended use, fluid specifications, and control panel functions.

Volumetric Capacity Adjustment

Explains how to adjust volumetric capacity via inverter or mechanical speed controller.

Operational Procedures

Covers cycle start, stopping, restarting, emptying, and emergency management.

Chapter 5: B Series LDPU Maintenance

Troubleshooting and Problem Solving

Provides solutions for common pump failures like no flow, seizure, and overheating.

Maintenance Checks

Details daily, weekly, six-monthly checks and periodic tests for maintenance.

Disassembly and Assembly Operations

Step-by-step guides for disassembling and assembling specific pump models.

Chapter 6: B Series LDPU Decommissioning

Disconnection and Disassembly

Instructions for safely disconnecting energy sources and disassembling the LDPU.

Storage and Disposal

Guidelines for storing the unit after use and proper disposal of materials.

Chapter 7: B Series LDPU Spare Parts

Spare Parts Lists and Drawings

Comprehensive lists and diagrams of spare parts for all LDPU models.

Ordering Spare Parts

Provides instructions and contact details for ordering spare parts.

Chapter 8: Assistance

After-Sales Support

Offers contact information for customer after-sales assistance services.

Chapter 9: Warranty

Warranty Terms

Details the warranty period, coverage, exclusions, and conditions.

OMAC B Series Specifications

General

Brand	OMAC
Model	B Series
Category	Water Pump
Language	English

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