INOXPA HLR Manual

INSTALLATION, SERVICE AND

MAINTENANCE INSTRUCTIONS

HLR

Rotary Lobe Pump

INOXPA, S.A.

c/Telers, 54 Aptdo. 174

E-17820 Banyoles

Girona (Spain)

Tel. : (34) 972 - 57 52 00

Fax. : (34) 972 - 57 55 02

e-mail: inoxpa@inoxpa.com

www.inoxpa.com

Original Manual

01.504.30.00EN

(A) 2021/11

(A) 2021/11 1.Safety 3

1. Safety

1.1. INSTRUCTION MANUAL

This instruction manual contains information on the reception, installation, operation, fitting, stripping and maintenance for the

HLR pump.

The information given herein is based on the most up-to-date data available.

INOXPA reserves the right to modify this instructions manual without having to give prior notice.

1.2. START-UP INSTRUCTIONS

This instruction manual contains vital and useful information for properly operating the pump and for keeping it in good

running condition.

Not only should the safety instructions set forth in this chapter be carefully read before putting the pump into operation, but

those concerned must also familiarise themselves with the operating features of the pump and strictly adhere to the

instructions given herein. It is extremely important that these instructions be kept in a set place near the installation.

1.3. SAFETY

1.3.1. Warning signs

Danger for people in general.

Danger of injury caused by rotating parts

of the equipment.

Danger! Electricity.

Danger! Caustic or corrosive agents.

Danger! Suspended loads.

Danger to the proper operating of the

machine.

Obligation to ensure safety at work.

Use of safety goggles obligatory.

1.4. GENERAL SAFETY INSTRUCTIONS

Please read the instruction manual carefully before installing and commissioning the pump. Should

you have any doubts or queries, contact INOXPA.

1.4.1. During the installation

You must always bear in mind the

Technical Specifications

set forth in Chapter 8.

Do not put the pump into operation before connecting it to the pipes.

Do not put the pump into operation if the rotor case of the pump has not been fitted and the lobe

rotors fixed in the pump.

Check that the motor/drive specifications are correct, especially if there is a special risk of explosion

due to the work conditions.

During the installation procedure, all the electrical work must be carried out by duly authorised

personnel.

1.4.2. During operation

You must always bear in mind the

Technical Specifications

set forth in Chapter 8. The limit values that

have been set must NEVER be exceeded.

NEVER touch the pump or pipes whenever the pump is being used to transfer hot liquids or during

the cleaning procedure.

4 1.Safety (A) 2021/11

The pump has moving parts. Do not put your fingers into the pump when it is operating.

NEVER work with the suction and the delivery valves shut off.

NEVER directly sprinkle the electric motor with water. Standard motor protection is IP-55: dust and

water sprinkling protection.

1.4.3. During maintenance

You must always bear in mind the

Technical Specifications

set forth in Chapter 8.

NEVER strip the pump down until the pipes have been drained. Remember that there will always be

some liquid left in the rotor case (if it has not been fitted with a drain). Always remember that the

liquid that has been pumped may be dangerous or subject to high temperatures. For situations of

this type, please consult the prevailing regulations in the country in question.

Do not leave loose parts on the floor.

ALWAYS turn the power supply to the pump off before embarking on maintenance work. Take out

the fuses and disconnect the wires from the motor terminals.

All electrical work must be carried out by duly authorized personnel.

1.4.4. In accordance with the instructions

Any failure to comply with the instructions could lead to a hazard for the operators, the atmospheric conditions of the room,

and the machine, and it could lead to a loss to any right to make a claim for damages.

Such non-compliance could bring with it the following risks:

•Important operating failures of the machine / plant.

•Failure to comply with specific maintenance and repair procedures.

•Potential electrical, mechanical and chemical hazards.

•Atmospheric conditions in the room could be hazardous due to the release of chemical substances.

1.4.5. Warranty

We wish to point out that any warranty issued will be null and void and that we are entitled to an indemnity for any civil liability

claim for products which might be filed by third parties if:

•Operation and maintenance work has not been done following the corresponding instructions; the repairs have not

been made by our personnel or have been made without our written authorization;

•Modifications are made to our material without prior written authorization;

•The parts or lubricants used are not original INOXPA parts/lubricants;

•The material has been improperly used due to error or negligence or has not been used according to the indications

and the intended purpose.

•The parts of the pump have been damaged as a result of having been exposed to strong pressure as there was no

pressure relief valve.

The General Delivery Terms which you have already received are also applicable.

No modification can be made to the machine without the prior consent of the manufacturer. For your

safety, use spare parts and original accessories. The use of other parts exempts the manufacturer

from any and all responsibility.

Any change in operating conditions can only be done with the prior written consent of INOXPA.

In the event of doubt or should you require a fuller explanation on particular data (adjustment, assembly, disassembly...),

please do not hesitate to contact us

 
(A) 2021/11 2.Index 5 
Index 
Safety 3 
1. Instruction manual ........................................................................................................ 3 
2. Start-up instructions ...................................................................................................... 3 
3. Safety .......................................................................................................................... 3 
4. General safety instructions ............................................................................................. 3 
Index 5 
General Information 6 
1. Description ................................................................................................................... 6 
2. Operating principle........................................................................................................ 6 
3. Application ................................................................................................................... 6 
Installation 8 
1. Pump reception............................................................................................................. 8 
2. Transport and storage ................................................................................................... 8 
3. Location ....................................................................................................................... 9 
4. Coupling....................................................................................................................... 9 
5. Pipes.......................................................................................................................... 10 
6. Secondary piping......................................................................................................... 11 
7. Pressure relief valve .................................................................................................... 12 
8. Electrical installation .................................................................................................... 12 
Start-up 13 
1. Start-up ..................................................................................................................... 13 
2. Pressure By-pass......................................................................................................... 13 
Operating Problems 15 
Maintenance 16 
1. General maintenance................................................................................................... 16 
2. Storage ...................................................................................................................... 16 
3. Cleaning..................................................................................................................... 17 
4. Pump disassembly....................................................................................................... 18 
5. Pump assembly........................................................................................................... 21 
6. Lobe adjustment ......................................................................................................... 24 
7. Mechanical seal assembly and disassembly.................................................................... 26 
Technical Specifications 28 
1. Technical specifications................................................................................................ 28 
2. Weights...................................................................................................................... 30 
3. HLR dimensions .......................................................................................................... 31 
4. pump with flushing dimensions..................................................................................... 33 
5. HLR 0......................................................................................................................... 34 
6. HLR 1......................................................................................................................... 36 
7. HLR 2......................................................................................................................... 38 
8. HLR 3......................................................................................................................... 40 
9. HLR 4......................................................................................................................... 42 

6 3.General Information (A) 2021/11

3. General Information

3.1. DESCRIPTION

The HLR rotary lobe pumps by INOXPA are part of our wide range of positive displacement rotary lobe pumps for viscous

liquids.

The following models exist in the hygienic rotary lobe pump range:

•The HLR pump normal flow rate suitable for differential pressure of up to 12 bar.

•The HLR with wider lobes, delivers a higher flow rate, and is suitable for differential pressure of up to 7 bar.

The HLR model has been specially developed to respond to all hygienic requirements in the Bio-Pharm and Food industries.

As regards hygiene, reliability and sturdiness, the complete range of rotary lobe pumps satisfies all requirements set by the

aforesaid industries.

Its modular design enables optimal part interchange between the different pumps.

The rotary lobe pumps are positive displacement pumps. Owing to the contact between the internal parts, the pressure

variations, etc. they make a louder noise than centrifugal pumps. This noise must be taken into consideration when installing

these pumps.

The HLR rotary lobe pumps by INOXPA have been certified by EHEDG and designed so that they meet the requirements of 3A

Sanitary Authority.

This equipment is suitable for use in food processing applications with strict hygienic requirements.

3.2. OPERATING PRINCIPLE

The rotary lobe pump is a positive displacement rotary pump. The left lobe (except in the case of pump size 0) is driven by the

driving shaft. The right lobe (except in the case of pump size 0) is located on the driven shaft, and is driven via a helical gear.

Both lobes rotate in synchronism without one touching the other. When the pump is running they displace a set volume of

liquid. Figure below shows how a rotary lobe pump operates.

A: When the lobes rotate, the space on the suction side increases because one lobe moves away from the other, thus causing

a partial vacuum that draws the liquid into the pumping chamber.

B: Each lobe void is filled consecutively as the shafts rotate and the liquid is displaced towards the discharge side. The small

clearances between the lobes, and between the lobes and the walls of the rotor case, duly cause the spaces to be rather well

closed.

C: The rotor case is completely full and the liquid leaks through the meshing of the lobes, knocking against the space walls so

as to thus complete the pumping action.

3.3. APPLICATION

The main advantage of the INOXPA HLR rotary lobe pump is its capacity to pump a great variety of viscous liquids, from 1

mPa.s up to 100.000 mPa.s

Furthermore, it is capable of pumping liquid products that require very careful handling and liquids that contain soft solids thus

causing only a minimum degradation of same.

(A) 2021/11 3.General Information 7

3.3.1. Field of application

The range of application for each type of pump is limited. The pump was selected for a given set of

pumping conditions when the order was placed. INOXPA shall not be liable for any damage resulting

from the incompleteness of the information provided by the purchaser (nature of the fluid, rpm,

etc.).

P [bar]

8 4.Installation (A) 2021/11

4. Installation

4.1. PUMP RECEPTION

INOXPA is not responsible for any deterioration of the material as a result of its transportation or

unpacking. Visually check that the packing has not suffered any damage.

The pump will be accompanied by the following documentation:

•Dispatch notes.

•Pump Instruction and Service Manual.

•Drive Instruction and Service Manual (*).

(*) If the pump has been supplied with a drive from INOXPA.

Unpack the pump and check the following:

•The pump suction and delivery connections, removing the

remains of any packing material.

•Check that the pump and the motor have not suffered any

damage.

•Should the pump not be in proper condition and/or does not

have all the parts, the haulier must draw up a report as

soon as possible with regard to the same.

4.1.1. Pump identification and marking

Pump plate

4.2. TRANSPORT AND STORAGE

HLR pumps and pumping units are often too heavy to be handled manually. Use an adequate means

of transport.

Use the points which are indicated in the drawing for lifting the pump.

Only authorized personnel should transport the pump.

Do not work or walk under heavy loads.

Lift the pump as shown below:

•Always use two support points placed as

far apart as possible.

•Secure the support so that it will not

move.

•See chapter 8.

Technical Specifications

consult dimensions and weights.

Serial number

(A) 2021/11 4.Installation 9

4.3. LOCATION

•Position the pump as near as possible to the suction tank, and whenever possible below the level of the liquid.

•Place the pump in such a way that there is enough space around it to provide access both to the same and to the motor.

(See Chapter 8.

Technical Specifications

to consult dimensions and weights).

•Place the pump on a level and flat surface.

•The basement must be rigid, horizontal and against any vibration.

Install the pump in such a way that it can be properly ventilated. If the pump is to be installed

outside, it must be done so under cover. Its positioning must enable easy access for any inspection

and maintenance operations that may need to be carried out.

4.3.1. Foundation

Install the pump base so that the drive and pump are level and well supported. Therefore the pump unit should be installed on

a base plate –according to DIN 24259-, or on a frame, both placed exactly level on the foundation. The foundation must be

hard, level, flat, vibrations free ...to prevent base distortion (to keep the alignment pump –drive guaranteed while

commissioning).

To install the pump unit on the foundation proceed as follows:

•Make holes in the foundation to fit foundation bolts. This is unnecessary when expanding screws are used instead of

foundation bolts.

•Place base plate or frame with the aid of shims horizontally on the foundation.

•Grout

•When the grout has entirely hardened the pump unit can be placed on the base plate or the frame. Tighten the nuts on

the foundation bolts carefully.

For other foundations consult INOXPA.

4.4. COUPLING

For the couplings selection and assembly consult to the supplier manual. Sometimes the torque of the positive displacement

pumps can be high enough. Therefore, a coupling have been chosen 1.5 to 2 the adequate torque.

4.4.1. Alignment

The pump and motor shaft of complete units have been accurately pre-aligned in our factory.

After installations of the pump unit, the pump and motor shaft should be re-aligned.

•After unit is installed recheck alignment of pump and motor shaft and alignment of piping. Realign if necessary.

•In the case of applications dealing with high temperatures the pump can be operated temporarily at its working

temperature. Then recheck alignment pump - piping.

Place a straight-edge (A) on top of the coupling: the straight should make contact with both halves of the coupling over their

entire length. See figure.

Repeat the check, but this time on both sides of the coupling near the shaft. For the sake of accuracy, this check should also

be done using an outside caliper (B) at two diametrically opposite points on the outside surfaces of the two halves of the

coupling.

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