O-Mac B Series User manual

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] 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

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
II
Rev.4 del 01/2011 O.M.A.C. s.r.l.
© Copyright by
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8
42048 RUBIERA (RE) – ITALY
Printed directly by the company
Revision 4 - January 2010

III
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
SUMMARY
INTENDED USE VII
EC DECLARATION OF CONFORMITY (EXAMPLE) IX
HOW TO CONSULT AND KEEP THIS DOCUMENTATION X
SYMBOLS USED X
KEEPING THE MANUAL XI
LABLES APPLIED XI
TERMS AND DEFINITIONS XII
CHAPTER 1: MACHINE AND PUMPED FLUID SPECIFICATIONS Chap.1-pag.1
1.1 Envisioned duration Chap.1-pag.1
1.2 Technical description of the machine Chap.1-pag.1
1.2.1 Operation principle of the B Series LDPU Chap.1-pag.1
1.2.2 B Series LDPU coding Chap.1-pag.2
1.3 Technical features Chap.1-pag.4
1.3.1 Technical features of the B Series LDPU Chap.1-pag.5
1.3.2 Variation of maximum operating pressure according to the temperature Chap.1-pag.5
1.3.3 Motorization and transmission coupling technical features Chap.1-pag.6
1.3.4 Rotor clearances Chap.1-pag.6
1.3.5 Rotor geometry Chap.1-pag.6
1.3.6 Tightening torque Chap.1-pag.7
1.3.7 Mechanical seal overall dimensions Chap.1-pag.7
1.3.8 Weights and dimensions table of the B Series LDPU Chap.1-pag.8
1.3.9 Dimensions of pumping bodies couplings, equipped with heating/cooling chamber and seals flushing Chap.1-pag.10
1.3.10 Suction inlet dimensions in “widened rectangular inlet” version of the B Series LDPU Chap.1-pag.10
1.3.11 Bearings Chap.1-pag.11
1.3.12 Lubricants used and quantities Chap.1-pag.11
1.4 Intended use Chap.1-pag.11
1.4.1 Recommended use guidelines for the transfer of the some types of processed fluid Chap.1-pag.12
1.5 Material specifications Chap.1-pag.14
1.6 Occupied workplaces Chap.1-pag.14
1.7 Indication of the safety systems Chap.1-pag.14
1.7.1 Flexible coupling protection Chap.1-pag.15
1.7.2 Emergency stop Chap.1-pag.15
1.7.3 Seals protections Chap.1-pag.15
1.7.4 Optional features: full fairing Chap.1-pag.15
1.7.5 Optional features: electric safety devices and pressure limiters Chap.1-pag.15
1.8 Noise and vibrations emitted Chap.1-pag.16
1.9 Use of the personal protection equipment Chap.1-pag.16
1.10 Personnel training Chap.1-pag.16
1.11 B Series LDPU optional features Chap.1-pag.16
1.11.1 Pump unit in aseptic version Chap.1-pag.16
1.11.2 Pump unit with widened rectangular inlet Chap.1-pag.17
1.11.3 Pump unit with heating / cooling chamber and front cover Chap.1-pag.17
1.11.4 Pump unit with mechanical safety valve on cover Chap.1-pag.17
1.11.5 Pump unit with pneumatic safety valve on cover Chap.1-pag.18
1.11.6 Pump unit with external mechanical bridge safety valve Chap.1-pag.18
1.12 LDPU optional features Chap.1-pag.18
1.12.1 Motorized B Series LDPU on fixed base Chap.1-pag.18
1.12.2 Motorized B Series LDPU on trolley base Chap.1-pag.18
CHAPTER 2: TRANSPORTATION OF THE B SERIES LDPU Chap.2-pag.1
2.1 Hoisting and transportation Chap.2-pag.1
2.2 Delivery and unpacking Chap.2-pag.2
2.3 Conditions for storage or extended interruptions of service Chap.2-pag.2
2.4 Packaging composition for future handling Chap.2-pag.3
2.5 Handling the LDPU without packaging Chap.2-pag.3
CHAPTER 3: INSTALLATION OF THE B SERIES LDPU Chap.3-pag.1
3.1 Destination and intended environments Chap.3-pag.1
3.2 Environmental conditions Chap.3-pag.1
3.2.1 Room lighting Chap.3-pag.1
3.3 Installation and assembly Chap.3-pag.1
3.3.1 Notes for the installer Chap.3-pag.2
3.3.2 Preliminary checks Chap.3-pag.2
3.3.3 Installation Chap.3-pag.2
3.3.4 Accessories fi t ting Chap.3-pag.5
3.4 Cleaning and Hygiene of the LDPU Chap.3-pag.9
3.4.1 LDPU for alimentary use Chap.3-pag.9
3.4.1.1 External cleaning instructions Chap.3-pag.10
3.4.1.2 Internal cleaning instructions Chap.3-pag.10

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
IV
Rev.4 del 01/2011 O.M.A.C. s.r.l.
SUMMARY
3.4.1.2.1 Internal cleaning :CIP (Cleaning In Place) / SIP (Sterilising In Place) Chap.3-pag.10
3.4.1.2.2 Internal cleaning: manual cleaning Chap.3-pag.11
3.4.2 LDPU for chemical use Chap.3-pag.12
3.4.2.1 External cleaning instructions Chap.3-pag.12
3.4.2.2 Internal cleaning instructions Chap.3-pag.12
3.4.2.2.1 Internal cleaning: CIP (Cleaning In Place) Chap.3-pag.13
3.4.2.2.2 Internal cleaning: manual cleaning Chap.3-pag.13
3.5 Connection to energy sources Chap.3-pag.14
3.5.1 Connection to electrical system Chap.3-pag.14
3.5.2 Connection to the hydraulic system Chap.3-pag.14
3.5.3 Connection to the pneumatic system Chap.3-pag.15
3.6 Use of lubricants Chap.3-pag.16
3.7 Installation and pre-start check: operation test Chap.3-pag.16
CHAPTER 4: USE OF THE B SERIES LDPU Chap.4-pag.1
4.1 Inteded use Chap.4-pag.1
4.2 Controls Chap.4-pag.2
4.3 LDPU volumetric capacity adjustment methods Chap.4-pag.3
4.3.1 Adjustment of the volumetric capacity with the inverter Chap.4-pag.3
4.3.2 Adjustment of the volumetric capacity via mechanical speed controller Chap.4-pag.3
4.4 Work cycle description Chap.4-pag.4
4.5 Cycle start instructions Chap.4-pag.4
4.5.1 Preliminary operations: check list Chap.4-pag.4
4.5.2 First start-up Chap.4-pag.5
4.6 Stopping instructions Chap.4-pag.5
4.7 Instructions for restarting after a stop Chap.4-pag.5
4.8 Switch-off Chap.4-pag.5
4.9 Emptying Chap.4-pag.5
4.10 Residual risks Chap.4-pag.6
4.11 Dangers generated by use Chap.4-pag.6
4.12 Prohibited use Chap.4-pag.6
4.13 Management of emergency situations Chap.4-pag.6
CHAPTER 5: MAINTENANCE OF THE B SERIES LDPU Chap.5-pag.1
5.1 Troubleshooting and solving problems Chap.5-pag.1
5.2 Instruction for carrying out checks Chap.5-pag.4
5.2.1 Daily checks Chap.5-pag.5
5.2.2 Weekly checks Chap.5-pag.5
5.2.3 Six monthly checks Chap.5-pag.5
5.3 Periodic check of the safety and emergency devices Chap.5-pag.5
5.4 Indication of dangerous temperatures Chap.5-pag.5
5.5 Oils present Chap.5-pag.5
5.6 Test and checks Chap.5-pag.5
5.6.1 Electrical checks Chap.5-pag.5
5.6.2 Single mechanical seals Chap.5-pag.5
5.6.3 Mechanical seals with flushing Chap.5-pag.6
5.6.4 Mechanical seals balancing Chap.5-pag.6
5.6.5 Packing seals Chap.5-pag.6
5.7 Disassembly and assembly operations of B100 size pump Chap.5-pag.7
5.7.1 Disassembly of the pumping body Chap.5-pag.8
5.7.2 Assembly of the pumping body Chap.5-pag.8
5.7.3 Disassembly of the bearings box Chap.5-pag.9
5.7.4 Assembly of the bearings box Chap.5-pag.9
5.7.5 Disassembly of the lip seals Chap.5-pag.10
5.7.6 Assembly of the lip seals Chap.5-pag.10
5.8 Disassembly and assembly operations of B1 B2 B3 B4 B470 B490 size pump Chap.5-pag.11
5.8.1 Disassembly of the pumping body Chap.5-pag.13
5.8.2 Assembly of the pumping body Chap.5-pag.13
5.8.3 Disassembly of the bearings box Chap.5-pag.13
5.8.4 Assembly of the bearings box Chap.5-pag.14
5.9 Disassembly and assembly operations of B550 B660 B680 size pump Chap.5-pag.16
5.9.1 Disassembly of the pumping body Chap.5-pag.18
5.9.2 Assembly of the pumping body Chap.5-pag.18
5.9.3 Disassembly of the bearings box Chap.5-pag.19
5.9.4 Assembly of the bearings box Chap.5-pag.19
5.10 Post maintenance check Chap.5-pag.20
CHAPTER 6: DECOMMISSIONING OF THE B SERIES LDPU Chap.6-pag.1
6.1 Disconnection from energy sources Chap.6-pag.1

V
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
SUMMARY
6.2 Disassembly Chap.6-pag.2
6.3 Storage after its use Chap.6-pag.2
6.4 Demolition and disposal Chap.6-pag.2
CHAPTER 7: SPARE PARTS OF THE B SERIES LDPU Chap.7-pag.1
7.1 List of spare parts and section drawings of the lobe displacement pump Chap.7-pag.1
7.1.1 B100: Spare parts list Chap.7-pag.2
7.1.1.1 Pump exploded view drawing Chap.7-pag.2
7.1.1.2 Spare parts names and codes Chap.7-pag.3
7.1.1.3 Seals section drawings Chap.7-pag.4
7.1.1.4 Gasket o-ring codes for mechanical seals Chap.7-pag.4
7.1.2 B105 B110 B115: Spare parts list Chap.7-pag.5
7.1.2.1 Pump exploded view drawing Chap.7-pag.5
7.1.2.2 Spare parts names and codes Chap.7-pag.6
7.1.2.3 Seals section drawings Chap.7-pag.8
7.1.2.4 Gasket o-ring codes for mechanical seals Chap.7-pag.9
7.1.2.5 Balancing ring codes for single and flushed mechanical seals Chap.7-pag.10
7.1.2.6 Single and double mechanical seals codes Chap.7-pag.10
7.1.3 B215 B220 B325 B330 B390 B430 B440 B470 B490: Spare parts list Chap.7-pag.11
7.1.3.1 Pump exploded view drawing Chap.7-pag.11
7.1.3.2 Spare parts names and codes Chap.7-pag.12
7.1.3.3 Seals section drawings Chap.7-pag.16
7.1.3.4 Gasket o-ring codes for mechanical seals Chap.7-pag.18
7.1.3.5 Balancing ring codes for single and flushed mechanical seals Chap.7-pag.18
7.1.3.6 Single and double mechanical seals codes Chap.7-pag.19
7.1.4 B550 B660 B680: Spare parts list Chap.7-pag.20
7.1.4.1 Pump exploded view drawing Chap.7-pag.20
7.1.4.2 Spare parts names and codes Chap.7-pag.22
7.1.4.3 Seals section drawings Chap.7-pag.24
7.1.4.4 Gasket o-ring codes for mechanical seals Chap.7-pag.27
7.1.4.5 Balancing ring codes for single and flushed mechanical seals Chap.7-pag.27
7.1.4.6 Single and double mechanical seals codes Chap.7-pag.28
7.1.5 Name and codes of pumping bodies Chap.7-pag.29
7.1.6 Codes of the springs used in the mechanical safety valve Chap.7-pag.30
7.1.7 Codes of the springs used in the external bridge mechanical safety valve Chap.7-pag.30
7.2 Recommended spare parts Chap.7-pag.30
7.3 How to order spare parts Chap.7-pag.30
CHAPTER 8: ASSISTANCE Chap.8-pag.1
CHAPTER 9: WARRANTY OF THE B SERIES LDPU Chap.9-pag.1

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
VI
Rev.4 del 01/2011 O.M.A.C. s.r.l.

VII
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
INTENDED USE
The “B Series Lobe Positive Displacement Pump Unit”, manufactured and marketed by O.M.A.C. s.r.l., which in this documentation will be indicated with
the abbreviation LDPU, has been designed and made to be assembled in industrial plants owned by third parties, to transfer volumes of fluid, compatible
with the materials used during the construction of this machine: section 1.4.1 lists the recommended operational features of the LDPU, depending on
the fluid.
The LDPU requires compliance with all technical indications in this use and maintenance manual, which in this documentation will be indicated with the
abbreviation OMM, for its proper installation.
In general, the fluid must meet the following specifications:
Fluid properties and range of use:
1) TEMPERATURE: from -35°C to +180°C
2) VISCOSITY: Maximum 200’000cPs with forced feeding
3) HARD PARTICLE SIZE: Maximum 80% of clearance between rotors (see sect.1.3.4)
The LDPU has been designed and made for two types of use:
alimentary use;
chemical use.
WARNING:
The LDPU, for alimentary use, has been made to ensure a hygienic standard equal to LEVEL 1, on the basis of UNI EN 13951.
The LDPU for alimentary use and for chemical use has been designed to transfer volumes of fluid without altering the organoleptic properties not the
physical properties.
WARNING:
During its normal use, the LDPU for alimentary use and chemical use does not alter the organoleptic characteristics not the physical characteristics of
the fluid.
Every LDPU comes with a technical sheet indicating the operational features in relation to the fluid that must be handled (name of the fluid, viscosity
range, capacity range, speed range, temperature range), as declared at the time of purchase by the Customer.
Section 1.3 shows a facsimile of the LDPU technical sheet.
Every modification to what is indicated in the specific technical sheet or variation of the machine operating parameters must be authorised in writing by
O.M.A.C. s.r.l.; the absence of such authorisation is deemed “improper use” and will void any warranty or liability under way between Manufacturer and
Customer.
DANGER:
Any use of the LDPU in conditions other than those indicated in “Fluid properties and range of use” and in conditions other than those indicated in the
machine technical sheet is forbidden, without explicit written authorisation, issued by O.M.A.C. s.r.l.
The LDPU for alimentary use and for chemical use has NOT been designed nor built to handle pharmaceutical, explosive, etc. fluids, and in general
fl u ids that do not comply with the indications of the specific technical sheet. In addition, the LDPU for alimentary use and chemical use has NOT been
designed nor built to handle what is indicated in Regulation (EC) No. 1005/2009 of the European Parliament and the Council of 16 September, 2009, on
substances that deplete the ozone layer.
ATTENTION:
It is forbidden to use the LDPU for alimentary use and chemical use to transfer the substances listed in Annex I of Regulation No. 1005/2009.
The pumping part of the LDPU is made up of the rotorcase, in which two rotors are housed (sect. 1.3.5 lists the types of rotors used), which rotate
synchronised in the opposite direction to each other.
The rotorcase receives the process fluid from the suction inlet, originating from the plant of the Customer. During the operation of the LDPU, the
cavities between the lobes of the rotors are filled with fluid and the counter-rotation of the rotors transfers the fluid to the delivery outlet of the rotorcase,
channelling it in the plant where the LDPU is installed.
•
•

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
VIII
Rev.4 del 01/2011 O.M.A.C. s.r.l.

IX
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
(Declaration of conformity to be attached)
EC DECLARATION OF CONFORMITY
EC Declaration of conformity
(Machinery Directive 2006/42/EC)
We, O.M.A.C. s.r.l., with registered office in Via Falcone n.8 - 42048 Rubiera (RE) – Italy, Tel. [phone] - Fax. [phone]
E-mail: [email protected] Website: www.omacpompe.com
hereby declare under our exclusive responsibility that:
Mrs Paola Zavaroni, Via Falcone, 8 - 42048 Rubiera (RE) Italy, is authorised to establish and
keep the technical documentation relative to the machine called
“MOTORIZED B SERIES LOBE POSITIVE DISPLACEMENT PUMP UNIT”
or “MOTORIZED B SERIES LOBE POSITIVE DISPLACEMENT PUMP UNIT WITH ELECTRIC PANEL”
or “B SERIES LOBE POSITIVE DISPLACEMENT PUMP UNIT complete with “TRANSMISSION DEVICE”
Model:________________________ Serial No: ____________________________ Specifications: _______________________
Date of issue:___________________
designed and built for pumping, in a third party plant, a medium (alimentary fluid /
chemical fluid) to which this declaration refers to.
The machine is compliant with the safety requirements provided by Directive 2006/42/EC
with Regulation EC No.1935/2004
and with Directives: 2006/95/EC – 2004/108/EC – 94/9/EC
and in accordance with the provisions of the following harmonised standards:
* * * REFERENCE STANDARDS* * *
This machine is equipped with:
Gear Unit/Speed Controller/Gear motor:________________ Supplier:___________________Specifications:__________________________________
Electric motor/Hydraulic motor:_______________________ Supplier:___________________Specifications:__________________________________
Flexible transmission coupling:_______________________ Supplier: ___________________
NOTE: any modifications to the machine, to which this declaration refers to, to the processing fluid and conditions of use of the process fluid, specified in
the relative technical sheet, will make this declaration null and void. O.M.A.C. s.r.l. does not assume any liability arising from the incompatibility between
the process fluid and materials which make up the machine, subject of this declaration, if the customer does not specify the particulars of the process
fl u id and its physical characteristics.
RUBIERA (RE) The Legal Representative
Date____________ Signature__________________

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
X
Rev.4 del 01/2011 O.M.A.C. s.r.l.
HOW TO CONSULT AND KEEP THIS DOCUMENTATION
This OMM is a document written by O.M.A.C. s.r.l. and is relative to the installation, safe use and maintenance of the LDPU, in this sense, this documen-
tation, complete with the use and maintenance manuals supplied by the manufacturers of the single components, is an integral part of the LDPU.
The purpose of all the documentation mentioned above is to put the users of the LDPU in the conditions to operate safely, thus putting in place clear rules
of use; this documentation must be carefully read and understood by the users.
Please note that the specifications carried on all the use and maintenance manuals, with reference to this machine, are designed to ensure safety and
health of the users and therefore they must carefully read, understand and apply the indications/procedures.
The compliance with these indications enables the safe use of the machine, as well as the implementation of appropriate interventions.
As indicated above, the declaration of conformity and all use and maintenance technical manuals concerning the LDPU will accompany it in the event it
is sold to other users.
This documentation must be kept with care until the final demolition of the same LDPU and must be made available to the personnel appointed to ope-
rate.
It is good practice not to damage the manual and keep it properly, do not tear pages, dirty them or get them greasy, never expose them to sources of heat
and always maintain the proper layout. This documentation and relative annexes must also be made available to the personnel authorised to operate on
the LDPU, in such a way that it can be consulted easily , to clear any doubts about its safe operation and/or about the execution of use and maintenance
procedures.
What is contained in the technical manuals reflects the state of the art at the time of construction of the machine in question. The technical manuals
cannot be considered inadequate, as a result of technological improvements of the LDPU.
The technical documentation and relative annexes are completely confidential: reserves all rights related to this use and maintenance manual and
with the object presented therein. The receiving party recognises these rights to O.M.A.C. s.r.l., in the person of its legal representative, Mrs Paola
ZAVARONI, and undertakes, in the absence of an explicit written consent, not to make it accessible to others, either in whole or in part and, not to use it
outside the purpose for which it was created. Violators will be prosecuted according to law.
SYMBOLS USED
Important information, regarding the technical reliability and safe use, are highlighted in this manual in the following way (these symbols always precede
the text they refer to):
DANGER
The DANGER symbol draws attention to a procedure, practice or similar measure which, if not performed correctly, can result in injury. Do not proceed
beyond a DANGER symbol until you have fully understood and satisfied the conditions specified.
WARNING
The WARNING symbol draws attention to an operating procedure, practice or other similar measure that is potentially dangerous, which may involve risk
of serious injury, if the instructions are not followed scrupulously.
ATTENTION
The ATTENTION symbol draws attention to an operating procedure, practice or other similar measure, which if not correctly performed or observed, can
damage or completely destroy the product. Do not proceed beyond an ATTENTION symbol until you have fully understood and satisfied the conditions
specified.
NOTE
Refers to technical aspects for which the user of the equipment must pay particular attention.

XI
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
KEEPING THE MANUAL
The technical manuals relating to the LDPU is part of the same unit; therefore all the above mentioned technical documentation must accompany this
machine even if it is sold.
WARNING
For the proper management of safety during use and maintenance of the LDPU, all the technical documentation must accompany it even if it is sold.
DANGER
The technical manuals contain the information / procedures concerning the use and management of safe maintenance of the LDPU, it must be kept in
the vicinity of the place in which the machine operates, to which this documentation refers, in a place easily accessible by the operator responsible for its
operation. The operator responsible for its operation and the maintenance engineer must be able to find and consult this documentation at all times.
DANGER
All the technical documentation that refers to the LDPU must be kept in an easily accessible place so that it can be consulted quickly. In addition, the
personnel responsible for its use and maintenance must be informed where this documentation is kept.
LABELS APPLIED
Throughout the LDPU there are nameplates of the various components of the same unit.
The nameplate applied on the left side of the “B Series lobe displacement pump unit” (left side of the pump looking at the rotors) carries the
LDPU serial number (the serial number starts with the letter “L” and is followed by six numbers), to which the item code of the LDPU is uniquely associated
to. The coding rule of the LDPU item code is explained in section 1.2.2.
On the surfaces of the various components of the LDPU, there are plates with the prohibition to operate the LDPU dry (plate A), placed on the bearings
box of the “B Series lobe displacement pump unit”, and the plate warns the operator of the presence of mobile parts under the butt strap (plate B). In the
event of LDPUs predisposed for pumping fluids at temperatures above 50°C, there is a signal placed on the same pump that warns the operators of the
presence of high temperature surfaces, as shown in figure C:
NOTE
Please note that the markings / labels present along the LDPU cannot be removed or altered for any reason.
WARNING
It is forbidden to use any O.M.A.C. item when it is without the nameplate. Should the item be without its nameplate
it is compulsory for the customer to contact the O.M.A.C. Technical Office that will see to identify the item and re-issue the nameplate.
A
B
CA B

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
XII
Rev.4 del 01/2011 O.M.A.C. s.r.l.
TERMS AND DEFINITIONS
OMM: Operation and Maintenance Manual.
LDPU: B Series Lobe displacement pump unit.
DANGEROUS AREAS: any area inside and/or in proximity of a machine in which the presence of an exposed person constitutes a risk
for the safety and health of this person.
EXPOSED PERSON: any person who finds himself entirely or in part in a dangerous area.
MACHINE: together of parts as defined by Article 2 of Directive 2006/42/EC of the European Parliament and the Council of 17 May, 2006
MANUFACTURER: O.M.A.C. s.r.l
CUSTOMER: Physical or legal person on whose behalf the machine is built, upon prior written acceptance of an order confirmation.

1
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.1 - pag.
CHAPTER 1: MACHINE AND PUMPED FLUID SPECIFICATIONS
1.1 Envisioned duration
Given the quality level of the materials and construction technologies used, if you strictly follow the instructions in this OMM (paying particular attention
to chapters 3, 4 and 5, relating, respectively, to the installation, use and maintenance of the LDPU), the expected duration of such subject matter is
estimated to be 12 months from date of installation.
Please note that, during its expected life-span, the LDPU must not be assembled and/or disassembled by unauthorised personnel and furthermore the
instructions contained in this UMM must be followed scrupulously.
1.2 Technical description of the machine
Below there is a brief description of the LDPU, as well as a functional illustrational of the B series LDPU, in order to more easily identify the main con-
struction details, mentioned in the description of use and maintenance of this document.
The LDPU is made up of 3 macro-components:
1) control unit (gear motor, speed controller, hydraulic motor,
electric panel, etc.);
2) mechanical transmission device (flexible transmission coupling);
3) B Series LDPU;
The B Series LDPU, identified with number 3)
is made up as follows:
A= Rotorcase cover
B= Lock nut
C= Rotor
D= Seal
E= Balancing ring
F= Bearing retainer ring
G= Front Bearing
H= Rear bearing
K= Oil vent cap
L= Rear cover
1.2.1 Operation principle of the B Series
LDPU.
The LDPU is reversible: full performance can be achieved in both rotation directions of the pump rotors (section 1.3.5 of chapter 1 lists the types of rotors
used).
The pumping action of the B series lobe displacement pump is achieved thanks to the counter-rotation of two rotors (letter “C” indicated in the figure in
section 1.2, indicating one of the two rotors), housed inside the pumping chamber (letter “U” indicated in the figure in section 1.2 or see figure below). The
rotors are assembled on rotating shafts supported by bearings (letters “G” and “H” shown in the figure in section 1.2), which are housed in the external
gearbox (letter “S” shown in the figure in section 1.2). Via a couple of sprocket wheels (letters “N” and “P” indicated in the figure in section 1.2) one
transfers motion from a drive shaft (letter “M” indicated in the figure in section 1.2) to a driven shaft (letter “R” indicated in the figure in section 1.2). The
synchronism of the rotors is such that they rotate without coming into contact with each other: in these conditions “the rotors are in time”.
When the lobes of the rotors move away from each other, the volume between them increases, creating a decrease in pressure near the suction outlet:
this enables a certain volume of fluid to enter (value of fluid transported identified in the table in section 1.3.1, in the “theoretical capacity” column,
depending on the pump model size) into the rotorcase. The fluid is transported along the internal of the pumping chamber, from the suction inlet to the
discharge outlet of the rotorcase.
When the volume of fluid, trapped between the lobes and the external perimeter of the pumping chamber, reaches in proximity of the discharge outlet,
the counter-rotation of the two rotors creates a sudden decrease of available volume and a consequent increase in pressure that pushes the fluid out of
the rotorcase, by channelling it into the plant where the LDPU is installed.
FG
H
K
L
M
N
O
E
D
C
B
A
P
R
S
T
U
V
1 2 3
M= Drive shaft
N= Fixed gear
O= Oil level cap
P= Adjustable gear
R= Driven shaft
S= Bearing housing
T= Foot
U= Rotorcase
V= Seal protection
The LDPU, whose functional element is the B Series
lobe positive displacement pump, is equipped with a
control unit that, depending on the version, can be fitted
with a gear motor, an electric motor, a pneumatic motor
or a hydraulic motor, with or without electric panel.
The capacity adjustment is achieved by increasing or
decreasing the number of revolutions of the B series
lobe positive displacement pump, intervening directly
on the revolutions output of the motor or acting on the
actuators on the control panel (inverter), if fitted.

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
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2
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.1 - pag.
FRONTAL VIEW OF THE PUMP CHAMBER REAR VIEW OF THE PUMP SHAFT
WARNING
If the control unit does not comply with the rotation direction indicated in the figure,
the mechanical functionality of the LDPU is not compromised, but will not supply any delivery capacity.
Failure to comply with the proper connection to the unit (suction inlet connected to the suction piping and delivery outlet connected to the unit delivery
pipe) will cause improper installation of the LDPU by the customer.
1.2.2 B Series lobe positive diplacement pump coding
The LDPU is identified by an item code, represented by a string of 18 alphanumeric characters that starts with “K” (the item code is detectable on the first
line of the technical sheet of which there is an example in section 1.3) divided into the following structure:
Fields 1-1: pump series = “BO”
Field 2: pump size
A= 100; B= 105; C= 110; D= 115; E= 215; F= 220; G= 325; H= 330; L= 390; M= 430; N= 440; P= 470; Q= 490;
R= 550; T= 660; U= 680;
Field 3: seal type
0= UM type - S1 type - HN Elring type;
1= Teflon packing;
2= Teflon packing + liquid barrier;
3= Single Mechanical Stainless Steel/Carbon;
4= Single Mechanical Tungsten carbid/Carbon;
5= Single Mechanical Tungsten carbid/Tungsten carbid;
6= Single Mechanical Ceramic/Carbon;
7= Single Mechanical Ceramic/Rulon;
8= Single Mechanical Silicon carbid/Silicon carbid;
9= Single Mechanical Tungsten carbid/Silicon carbid;
Field 4: suction-discharge connections type
0= GAS-BSP;
1= flanged PN16 UNI EN 1092-1 – DIN2576;
2= DIN 11851;
3= SMS;
4= RJT (BS);
5= IDF-ISS;
6= TRI-CLAMP;
7= GAS;
8= wine fitting;
Field 5: tipo di rotori:
(ST= standard rotor clearance; SM = increased rotor clearance; PR = exact rotor clearance)
A= Single Mechanical Silicon carbid/Carbon;
B= Opened frontal lip;
C= Frontal o-ring;
D= Closed frontal lip;
M= Double lip 2HN in PTFE;
N= Single lip HN in PTFE;
P= Frontal lip in PTFE;
Q= Single lip HN modified (heat-welded);
R= Double lip 2HN modified (heat-welded);
A= Aseptic O.M.A.C.;
B= DIN 11864/1a;
C= DIN 11864/2a;
D= DIN 11864/3a;
E= DIN 11864/1b;
F= DIN 11864/2b;
G= DIN 11864/3b;
H= flanged PN40 UNI 6084-67/DIN 2501;
J= flanged ASME 150lb;
K= flanged IDF;
L= smooth for welding;
M= DS 722;
N= DIN 11851 (male);
P= MACON;
Q= flanged 5044/DIN 11850;
R= ISO KF CLAMP;
0= Trilobe
1= Trilobe/Gear
2= Bilobe
3= Bilobe
4= Trilobe
5= Dual Wing
6= Bilobe
7= Trilobe/Gear
8= Gear
9= Quadrilobe
A= Bilobo
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
CY5SnBIM(antiseizure)
Stainless Steel
CY5SnBIM (antiseizure)
Stainless Steel
Stainless Steel
CY5SnBIM(antiseizure)
ST;
SM;
ST;
SM;
ST;
ST;
ST;
ST;
ST;
ST;
ST;
B= Dual Wing
C= Dual Wing
E= Quadrilobe
F= Trilobe
L= Trilobe/Gear
M= Dual Wing
N= Trilobe
P= Dual Wing
Q= Gear
R= Gear
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
CY5SnBIM (antiseizure)
CY5SnBIM (antiseizure)
CY5SnBIM (antiseizure)
CY5SnBIM (antiseizure)
CY5SnBIM (antiseizure)
CY5SnBIM (antiseizure)
ST
SM
SM
SM;
SM;
SM;
PR;
PR;
ST ultrareducted;
ST reducted;
K 1 1 2 3 4 5 6 7 7 7 8 8 9 V V V V

3
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.1 - pag.
Field 6: cover type
Fields 7-7-7: pump single optionals
Fields 8-8: pump group optionals
C1 = flushing for single mechanial seal in NBR;
C2 = flushing for single mechanial seal in EPDM;
C3 = flushing for single mechanial seal in PTFE;
C4 = flushing for single mechanial seal in FKM;
GG = inner polishing surface Ra<0.6μ;
Q3 = secondary mechanical seal in S.S. Aisi 316 L/Carbon;
Q4 = secondary mechanical seal in Tungsten carbid/Carbon;
Q5 = secondary mechanical seal in Tungsten carbid/Carburo di Tungsteno;
Q6 = secondary mechanical seal in Ceramic/Carbon;
Q7 = secondary mechanical seal in Ceramic/Rulon;
Q8 = secondary mechanical seal in Silicon carbid/Silicon carbid;
QA = secondary mechanical seal in Silicon carbid/Carbon;
11 = connections modified diameters suction/discharge to DN20 (3/4”);
12 = connections modified diameters suction/discharge to DN25 (1”);
13 = connections modified diameters suction/discharge to DN32 (1” 1/4);
14 = connections modified diameters suction/discharge to DN40 (DN38) (1”1/2);
15 = connections modified diameters suction/discharge to DN50 (DN51) (2”);
16 = connections modified diameters suction/discharge to DN65 (DN63) (2”1/2);
17 = connections modified diameters suction/discharge to DN80 (DN73) (3”);
18 = connections modified diameters suction/discharge to DN100 (DN101) (4”);
19 = connections modified diameters suction/discharge to DN125 (5”);
21 = connections modified diameters suction/discharge to DN150 (6”);
22 = connections modified diameters suction/discharge to DN200 (8”);
23 = suction connections diameters DN125 / discharge connections diameters DN100;
24 = flanged suction connection PN16 UNI2278 / flanged discharge connection DIN11851;
28 = bearing housing S.S.Aisi 304 elettropolished;
29 = External polishing of bearing housing and pumping case
Field 9: seal model
0= other type of seal (no mechanical); 1= Internal seal; 2= Fluiten KL2A seal;
3= Fluiten KL2A sliding face reducted; 4= Sealtek 556/S seal; 5= Burgmann C5E seal;
7= Roten U7K seal;
Fields V-V-V-V: progressive versioning number
Digital counter that versions the item code according to the type of accessories and type of LDPU and according to the type of associated control unit.
0= standard;
1= with mechanical safety valve;
2= heated;
3= with pneumatic safety valve;
4= with wetted o-ring;
5= for built in locking nut;
6= for ultrareducted pump version;
7= for built in locking nut and heated;
8= with drainage;
A= aseptic;
B= with mechanical safety valve and drainage;
A= aseptic pump;
B= pump o-ring in N.B.R. (Buna);
C= flushing for single mechanial seal
in F.K.M. (°Viton);
D= duplex shafts;
E= PACD treatment;
F= pump o-ring in kaflon 72B™;
G= inner polishing surface Ra<0.8μ;
H= high pressure pump;
J= pump in titanium;
K= kolsterizing treatment ;
L= rectangular suction connection;
M= pump in monel;
N= niploy treatment;
P= pump o-ring in teflon;
R= heated pumping case;
S= poliuretanic lip seal;
T= hydraulic flange pump;
U= pump o-ring in E.P.D.M.;
V= pump o-ring in F.K.M. °VITON;
W= pump o-ring in Kalrez Spectrum6375;
X = Atex pump certified;
Y= pump in hastelloy;
Z= pump in hastelloy-titanium;
1= cheniflon treatment;
2= bearing housing S.S.Aisi 304;
3= pump o-rings 3-A certified;
6= nichel-plated cast iron bearing housing;
7= with feet for vertical connections disposition;
9= internal mechanical seals;
0= no options;

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
4
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.1 - pag.
1.3 Technical features
The technical data of the LDPU is listed in the “technical sheet”, of which there is an example below. The technical sheet is delivered to the Customer
together with the LDPU, in original and edited without the possibility of manual corrections.
The exploded view below highlights the position numbers of some components which will be discussed later in this chapter.
ATTENTION
The technical sheet must not non have any manual corrections
or deletions.
The technical sheet lists the item code, which identifies the
LDPU, the serial number (detectable on the riveted nameplate
on the bearings box of the B series lobe displacement pump),its
functional features (processed fluid and its properties, pump
speed, volumetric capacity, differential pressure,..) and the
features of the B Series lobe displacement pump components.
The technical sheet below lists the technical data of the control
unit (motorisation, gear motor, speed controller,..), of the flexible
mechanical transmission coupling, that connects the “B Series
lobe displacement pump” to the motorisation, and the type of
support on which the LDPU is fitted.
D A T A S H E E T
Mod. 13 04 del 31/07/2008
Codice Cliente
0000000000
Tipo
A
Numero
0000000
Data
__/__/__
Nostro Riferimento Vostro Riferimento
O.M.A.C. S.r.l.
Via G. Falcone 8
42048 RUBIERA (RE) ITALY
Tel/Ph. 0039-0522-62.93.71 / 62.99.23
Fax [phone]
http://www.omacpompe.com
E-mail: [e-mail]
Intestatario Ordine Destinatario Merce Destinatario Ordine
Riga Descrizione
U.M.
Quantità Q.tà Totale 6FRQWLImporto
IVA
Consegna
K
BO000000000000000000
NR
1 DI
1,00
__
/
__
/
_
P
UMP
6HULDOQXPEHU

/
PRODUCT INFO
MEDIA
DESCRI
PTION
VISCOSIT
Y
'
TEMPERATUR
E
PUMP PERFORMANCES
FLOW
-
RATE
PRESSION
PUMP SPEED
TORQUE
ABSORBED POWER
TECHNICAL FEATURES
MODEL
CERTIFICA
TION
ROTOS
SEAL TYPE
SEAL GASKETS
SUCTION
–
DISCHARGE CONNECTIONS
Ø
SUCTION
-
Ø
DISCHARGE
CONNECTIONS DISPOSITION
PUMP COVER
PUMP GASKETS
SHA
FT POSITION
BEARING HOUSING OIL
NAME PLATE
SUPPORT FEATURES
T
YPE
SIZE
JOINT FEATURES
T
YPE
C
ARTER
HOLE
(P
UMP
)
HOLE
(MOTORIZA
TION)
PUMP ANCILLARIES
DOCUMENT
S
Informativa d.lgs 30.6.2003 n. 196 TU Privacy I suoi dati personali saranno trattati, nel rispetto delle idonee misure di sicurezza, per invio di comunicazioni commerciali,
potrà esercitare i diritti previsti dalla legge e nelle modalità ivi completate. Titolare del trattamento dati è O.M.A.C. S.r.l., sede legale: 42048 Rubiera in Via G.Falcone, 8.
Per comunicazioni [e-mail]. Per ulteriori informazioni www.omacpompe.com
SEAL
PROTECTION
par. 1.12
BEARINGS
par. 1.3.11
MECHANICAL
SEALS
par. 1.3.7
ROTORS par. 1.3.4 - par. 1.3.5

5
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.1 - pag.
1.3.1 Technical features of the B Series lobe positive displacement pump
The table below shows the nominal features of the various dimensions of the B series lobe displacement pump, inserted in the LDPU. The data that make
up the table refer to the pump model, the capacity that each pump model (B100, B105, B110...) elaborates every 100 revolutions, the maximum operation
speed of each pump size, the differential operating pressure, expressed in bar, and the standard dimensions of the opening couplings, expressed in
millimetres and inches.
PUMP
MODEL
THEORETIC
CAPACITY
MAXIMUM
SPEED
MAXIMUM
POWER
MAXIMUM OPERATING PRESURE (bar) STANDARD
CONNECTION
lt/100 rpm rpm kW rotor clearances ST (standard)
with shafts
rotor clearances SM (increased)
with shafts
High pressure
Duplex + Acteon
S.S. AISI 316 L DUPLEX S.S. AISI 316 L DUPLEX DN Inches
B100 3 1400 1.5 7 10 - - - 25 1”
B105 7 1000 4 10 13 15 18 - 40 1” 1/2
B110 12 1000 4 10 13 15 18 20 40 1” 1/2
B115 18 1000 5.5 7 10 12 15 - 40 1” 1/2
B215 23 950 7.5 10 13 15 18 20 40 1” 1/2
B220 34 950 7.5 7 10 12 15 - 50 2”
B325 55 720 18.5 10 13 15 18 20 65 2” 1/2
B330 70 720 18.5 7 10 12 15 - 80 3”
B390 90 720 18.5 5 7 10 12 - 80 3”
B430 116 600 30 10 13 15 18 20 80 3”
B440 155 600 30 7 10 12 15 - 100 4”
B470 240 500 45 10 13 15 18 20 100 4”
B490 330 500 45 7 10 12 15 - 100 4”
B550 400 500 45 5 - 7 - - 125 5”
B660 700 500 75 7 - - - - 150 6”
B680 1050 500 75 4 - - - - 200 8”
1.3.2 Variation of maximum operating pressure according to temperature
The table below lists the maximum differential pressure values, processed by the B series lobe displacement pump, inserted in the LDPU, according to
the size of the pump (from B100 to B680), according to the temperature of the processed fluid (from 0-70°C, 90°C, 110°C,..) and according to the type of
rotors fitted: with clearances between rotor and ST standard pumping chamber, SM increased clearances or clearances for HP high pressures.
The values of these clearances between rotors and pumping chamber are shown in the section 1.3.4.
TEMPERATURE
°C
ROTOR
TYPE
B SERIES MODEL PUMP
B100 B105 B110 B115 B215 B220 B325 B330 B390 B430 B440 B470 B490 B550 B660 B680
0°C
a 70°C
ST 7 10 10 7 10 7 10 7 5 10 7 10 7 5 7 5
SM - 15 15 12 15 12 15 12 10 15 12 15 12 7 10 7
HP - - 20 - 20 - 20 - - 20 - 20 - - - -
90°C
ST 5.2 8.8 8.9 6.5 9 6.5 9.1 6.5 4.5 9.1 6.4 9.1 6.3 4.4 6.4 4.4
SM - 15 15 12 15 12 15 12 10 15 12 15 12 7 10 7
HP - - 18.8 - 18.9 - 19 - - 19 - 19 - - - -
110°C
ST 4 7.6 7.8 5.7 8 5.9 8.2 6 - 8.4 5.8 8.4 5.9 5.8 5.8 3.9
SM - 15 15 12 15 21 15 12 - 15 12 15 12 10 10 7
HP - - 17.6 - 17.7 - 18 - - 18 - 18 - - - -
120°C
ST 3.4 7 7.3 5.5 7.5 5.6 7.8 5.7 - 7.9 5.5 7.8 5.4 3.7 5.5 3.7
SM - 14 14.6 11.7 14.5 11.7 14.5 11.7 - 14.6 11.7 14.6 11.6 6.8 9.5 6.8
HP - - 17.1 - 17.2 - 17.6 - - 17.5 - 17.5 - - - -
140°C
ST 2.2 6 6.3 5.1 6.5 5 7 5.2 - 7.2 4.9 7.2 4.9 3.2 4.9 3.2
SM - 13 13.6 11.3 13.6 11.1 13.8 11.2 - 13.7 11.1 13.7 11.1 6.4 8.6 6.4
HP - - 16.1 - 16.3 - 16.8 - - 16.6 - 16.6 - 2.6 - -
160°C
ST - - 5.3 5 5.5 4.4 6.1 4.6 - 6.4 4.3 6.4 4.2 2.6 4.3 2.6
SM - - 12.7 10.8 12.7 10.5 12.9 10.7 - 12.9 10.4 12.7 10.4 6 7.8 6
HP - - 15.1 - 15.3 - 15.8 - - 15.8 - 15.6 - - - -
180°C
ST - - 4.3 4.2 4.5 3.9 5.2 4.1 - 5.5 3.6 5.4 3.6 2 3.6 2
SM - - 12.1 9.9 11.8 10.5 12.1 10.1 - 12 9.7 12 9.7 5.5 6.9 5.5
HP - - 14.1 - 14.3 - 14.9 - - 14.9 - 14.6 - - - -

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6
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.1 - pag.
1.3.3 Motorization and transmission coupling technical features
The mechanical features of the flexible transmission coupling and the performance features of the control unit (electrical, pneumatic, hydraulic), accor-
ding to the type of operation chosen by the customer, are shown in the respective use and maintenance manuals; documents that are supplied with the
LDPU.
1.3.4 Rotors clearances
1.3.5 Rotors geometry
The table below shows the types of rotors, per type of construction material and geometric shape, available for every size of “B series lobe pump”.
ROTOR TYPE
B SERIES MODEL PUMP
B100 B105 B110 B115 B215 B220 B325 B330 B390 B430 B440 B470 B490 B550 B660 B680
GEAR S.S. AISI 316 L ● ●
GEAR CY5SnBIM ● ●
DUAL-WING S.S. AISI 316 L ●
DUAL-WING CY5SnBIM ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
TRILOBE S.S.AISI 316 L ● ● ● ● ● ● ● ● ● ● ● ● ● ●
TRILOBE CY5SnBIM ● ● ● ● ● ● ● ●
RUBBER COATED TRILOBE (*) ● ● ● ● ● ● ● ●
BILOBE S.S.AISI 316 L ● ● ● ● ● ● ● ● ● ● ● ● ●
BILOBE CY5SnBIM ● ● ● ● ● ● ● ● ●
RUBBER COATED BILOBE ● ● ● ● ●
(*) Penta-lobe for B100 and B105
ROTORS S.S. AISI 316 L
ST VERSION
ROTORS S.S. AISI 316 L
SM VERSION
ROTORS ANTISEIZURE
CY5SnBIM
SHAFT
PROTRUSION
A B C D A B C D A B C D S
B100 0.12 0.12 0.15 0.2 0.15 0.15 0.2 0.2 0.07 0.08 0.19 0.15 0.12
B105 0.12 0.14 0.15 0.25 0.17 0.19 0.2 0.3 0.05 0.05 0.13 0.15 0.12
B110 0.14 0.14 0.15 0.3 0.19 0.19 0.23 0.3 0.08 0.07 0.15 0.2 0.14
B115 0.14 0.14 0.18 0.3 0.19 0.19 0.22 0.3 0.07 0.08 0.2 0.2 0.14
B215 0.15 0.15 0.18 0.3 0.22 0.23 0.3 0.3 0.08 0.07 0.18 0.2 0.15
B220 0.15 0.17 0.23 0.3 0.25 0.25 0.32 0.3 0.08 0.07 0.2 0.2 0.15
B325 0.17 0.17 0.2 0.35 0.25 0.25 0.32 0.35 0.08 0.08 0.2 0.2 0.17
B330 0.17 0.19 0.23 0.35 0.27 0.28 0.32 0.35 0.09 0.08 0.23 0.2 0.17
B390 0.17 0.19 0.23 0.35 0.27 0.28 0.32 0.35 0.09 0.08 0.23 0.2 0.17
B430 0.18 0.18 0.22 0.35 0.27 0.27 0.32 0.35 0.09 0.08 0.23 0.2 0.18
B440 0.18 0.18 0.22 0.35 0.27 0.27 0.32 0.35 0.1 0.1 0.25 0.2 0.18
B470 0.2 0.2 0.27 0.35 0.32 0.32 0.35 0.35 0.09 0.09 0.25 0.2 0.2
B490 0.23 0.23 0.3 0.35 0.35 0.35 0.35 0.45 0.09 0.09 0.25 0.2 0.23
B550 0.22 0.22 0.3 0.4 0.32 0.32 0.43 0.4 0.15 0.15 0.35 0.25 0.22
B660 0.27 0.27 0.35 0.5 0.37 0.37 0.5 0.5 - - - - 0.27
B680 0.3 0.35 0.35 0.5 0.37 0.37 0.5 0.5 - - - - 0.27
Dimensions expressed in mm - Tolerances 0/+0.03
This section lists the nominal clearances (ST standard, SM increased), that are recorded between rotors
and walls of the pumping chamber according to the material (AISI 316 L, anti-friction alloy CY5SnBIM).
The figure, on the next page, represents a rotor section, fitted in the pumping chamber, with indication
of clearances, identified by letters A,B,C,D. The table below shows the entity of these clearances.
The “S” value represents the protrusion of the shaft compared to the wall of the pumping chamber.

7
O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.1 - pag.
1.3.6 Tightening torque
This table shows the tightening torque values, to be used as reference during all assembly and disassembly operations of pump components, in one or
more parts.The values mentioned in the table below relate to gear adjustment, rotor blocking, pumping body blocking, front cover blocking, bearing ring
blocking and gear ring blocking.
PUMP MODEL
GEAR ADJUSTMENT
(pos.8, pag.15)
ROTOR LOCKING
(pos.42, pag.15)
PUMPING CASE LOCKING
(pos.52, pag.15)
FRONT COVER LOCKING
(pos.51, pag.15)
Thread
d x pitch
Key type
/ Size [mm]
TORQUE
[Nm]
Thread
d x pitch
Key type
/ Size [mm]
TORQUE
[Nm]
Thread
d x pitch
Key type
/ Size [mm]
TORQUE
[Nm]
Thread
d x pitch
Key type
/ Size [mm]
TORQUE
[Nm]
B100 M4X0.7 A/7 3 M8X1 A/17 25 M6X1 A/10 10 M6X1 A/10 10
B105 B110 B115 M5X0.8 B/4 5 M12X1 A/27 85 M8X1.25 A/13 30 M8X1.25 A/13 30
B215 B220 M6X1 B/5 10 M14X1.5 A/30 190 M10X1.5 A/17 50 M10X1.5 A/17 50
B325 B330 B390 M8X1.25 B/6 20 M20X1.5 A/38 305 M12X1.75 A/19 70 M10X1.5 A/17 50
B430 B440 M10X1.25 B/8 50 M24X2 A/46 480 M16X2 A/24 115 M12X1.75 A/19 70
B470 B490 M10X1.25 B/8 50 M24X2 A/46 480 M20X2.5 A/30 180 M14X2 A/22 95
B550 M12X1.75 A/19 70 M24X2 A/46 500 M14X2 A/22 115 M12X1.75 A/19 70
B660 B680 M16X2 A/24 170 M36X2 A/60 600 M14X2 A/22 115 M14X2 A/22 70
PUMP MODEL
BEARING RING NUT LOCKING
(pos.21, pag.15)
GEAR RING NUT LOCKING
(pos.42, pag.15)
Thread
d x pitch
Key type
/ Size [mm]
TORQUE
[Nm]
Thread
d x pitch
Key type
/ Size [mm]
TORQUE
[Nm]
B100 - - - M20X1 HN4 50
B105 B110 B115 M30X1.5 HN6 90 M30X1.5 HN6 90
B215 B220 M40X1.5 HN8 105 M35X1.5 HN7 90
B325 B330 B390 M50X1.5 HN10 115 M40X1.5 HN8 105
B430 B440 M70X2 HN14 220 M60X2 HN12 145
B470 B490 M80X2 HN16 400 M70X2 HN14 220
B550 M70X2 HN14 220 M70X2 HN14 220
B660 B680 - - - M100X2 HN20 600
1.3.7 Mechanical seals overall dimensions
Below there are the overall dimensions of the mechanical seals fitted on the B series lobe pump, according to the size of the pump and the position of
the seal. The drawing below shows the references relative to the main dimensions of the mechanical seals, whose values, in mm, are shown in the table,
according to the size of the pump.
B100
B105
B110
B115
B215
B220
B325
B330
B390
B430
B440
B470
B490 B550 B660 B680
d1 20 30 35 50 65 80 65 100
d6 29 39 44 62 77 95 77 115
d7 35 45 50 70 85 105 85 125
L1 29.1 29.1 29.1 34.1 38.8 43.8 38.8 41.3
L2 44 44 44 50 55.5 59 55.5 85
L3 19.1 19.1 19.1 21.1 25.8 25.8 25.8 25.8
L4 10 10 10 13 13 18 13 15.5
L5 2 2 2 2.5 2.5 3 2.5 3
L6 5 5 5 6 6 7 6 7
L7 9 9 9 9 9 9 9 9
The “A” type spanner - ref. “spanner type” column - is a
polygonal spanner; the “B” type spanner - ref. “spanner
type” column - is hexagonal (inbus or imbus).
With regard to the tightening torque value of the elemen-
ts that make up the LDPU, please refer to the use and
maintenance manuals (flexible transmission coupling,
motorisation).
NOTE

O.M.A.C. s.r.l.
Via Giovanni Falcone, 8 42048 Rubiera (RE) - Italy Tel.[phone] - 629923 Fax [phone]
E-mail:[email protected] SitoWeb:www.omacpompe.com
8
Rev.4 del 01/2011 O.M.A.C. s.r.l.
Chap.1 - pag.
1.3.8 Weights and dimensions table of the B Series lobe positive displacement pumpe
The table below shows the dimensions of the B series lobe pump, with reference to its size and according to the type of connections it is equipped with.
With regard to the dimensions of the LDPU, these vary according to the type of control unit supplied, therefore they must be expressly requested to the
O.M.A.C. Technical Office.
PUMP WITH CONNECTIONS IN HORIZONTAL POSITION
PUMP WITH CONNECTIONS IN VERTICAL POSITION
11 1
1
1
I1
1
1
1