Originalbetriebsanleitung EN 4030-M Stand22.10.12 - Scherzinger

Original operating instructions 

4030-280-.M... 



Pump type 

© 2011 Scherzinger Pump Technology 

Version: 1.4 

Date: 22.10.2012 

Author: Markus Dold 

Reviewed by: Erich Willimsky 

4030-280-B-.M... 


4030-710-B-.M...

Table of contents 

0. Table of contents 

0. Table of contents ......................................................................................................................... 2 

1. General information ..................................................................................................................... 4 

1.1. Related documents ................................................................................................................ 4 

1.2. Intended use .......................................................................................................................... 4 

1.3. Product information ................................................................................................................ 4 

1.4. Pump dimensions .................................................................................................................. 5 

1.5. Nameplate description (cover markings) ............................................................................... 5 

1.6. Pump specifications ............................................................................................................... 6 

1.7. Noise Level ............................................................................................................................ 8 

1.8. Non-ionizing radiation ............................................................................................................ 8 

1.9. Foreign representatives ......................................................................................................... 8 

2. Safety ............................................................................................................................................ 9 

2.1. Labeling of notices in the operating instructions .................................................................... 9 

2.2. Protective clothing .................................................................................................................. 9 

2.3. Personnel qualification and training ..................................................................................... 10 

2.4. Dangers of failure to observe safety notices ........................................................................ 10 

2.5. Working in a safe manner .................................................................................................... 10 

2.6. Safety notices for the operator ............................................................................................. 10 

2.7. Safety notices for maintenance, inspection, and assembly tasks ....................................... 10 

2.8. Unauthorized conversion and production of spare parts ..................................................... 11 

2.9. Impermissible operating methods ........................................................................................ 11 

3. General danger points ............................................................................................................... 12 

3.1. Hazards presented by the pumped liquid ............................................................................ 12 

3.2. Danger of electrical energy .................................................................................................. 12 

3.3. Dangers of the magnetic coupling ....................................................................................... 12 

3.4. Danger of moving parts ........................................................................................................ 12 

3.5. Hazards caused by hot components ................................................................................... 12 

3.6. Hazards caused by dust ...................................................................................................... 12 

3.7. Hazards of special fields of operation .................................................................................. 12 

4. Description of the pump ............................................................................................................ 13 

4.1. How a gear pump works ...................................................................................................... 13 

4.2. Structural design of the pump head ..................................................................................... 13 

4.2.1. Basic design ................................................................................................................... 13 

4.2.2. Pressure relief valve, only on 4030-280-B, 4030-450-B, and 4030-710-B .................... 13 

4.2.3. Magnetic coupling .......................................................................................................... 14 

5. Transport and storage ............................................................................................................... 15 

5.1. Shipping the pumps and protective measures ..................................................................... 15 

5.2. Transport .............................................................................................................................. 15 

5.3. Storage ................................................................................................................................. 15 

5.4. Preservation for storage after operation/flushing of the pump ............................................. 15 

5.5. Sending the pump back to the factory ................................................................................. 15 

6. Set-up/Installation ...................................................................................................................... 16 

6.1. Place of installation .............................................................................................................. 16 

6.2. Installation position .............................................................................................................. 16 

6.3. Installing the magnetic coupling (only when switching motors) ........................................... 16 

6.4. Electric drive......................................................................................................................... 16 

6.5. Initial installation ................................................................................................................... 17 

6.6. Connection lines .................................................................................................................. 18 

2 Operating instructions for: 4030-280-.M..., 4030-450-.M..., 4030-710-.M..., 4030-280-B-.M..., 4030-450-B-.M..., 4030-710-B-.M...

Table of contents 

7. Starting/stopping ....................................................................................................................... 20 

7.1. Preparing for operation ........................................................................................................ 20 

7.2. Startup .................................................................................................................................. 20 

7.3. Adjusting the pressure relief valve (4030-280-B, 4030-450-B, and 4030-710-B only) ........ 20 

7.4. Monitoring ............................................................................................................................ 21 

7.5. Taking the pump out of operation ........................................................................................ 23 

7.6. Removal from the system .................................................................................................... 23 

7.7. Disposing of the pump ......................................................................................................... 24 

8. Maintenance ............................................................................................................................... 25 

8.1. General notices .................................................................................................................... 25 

8.2. Maintenance cycle ............................................................................................................... 25 

8.3. Disassembly and reassembly .............................................................................................. 25 

8.3.1. Assembly tools ............................................................................................................... 25 

8.3.2. Pump body ..................................................................................................................... 25 

8.3.3. Pressure relief valve only on 4030-280-B, 4030-450-B, and 4030-710-B ..................... 26 

8.3.4. Bearing bushes .............................................................................................................. 27 

9. Disturbances, causes, removal ................................................................................................ 28 

10. Spare parts ................................................................................................................................. 31 

10.1. List of spare parts .............................................................................................................. 31 

10.2. Exploded drawing .............................................................................................................. 32 

11. Safety Declaration ...................................................................................................................... 33 

12. Declaration of conformity according to directive 94/9/EC (ATEX95).................................... 34 

13. Declaration of conformity according to directive 2006/42/EC (machinery directive) ......... 35 

14. Table of Figures ......................................................................................................................... 36 

15. Listing of Tables ........................................................................................................................ 36 

Version: 1.4 Date: 22.10.2012 3

General information 

1. General information 

These original operating instructions contain important, fundamental information. Whenever you 

install the machine, bring it into operation, take it out of operation, or maintain the machine, always 

observe these instructions. Failure to observe the instructions may lead to damage or destruction 

of the machine and personal injury. For this reason, it is essential that you, as the installer, read 

and fully understand all information contained in the operating instructions before attempting to 

install the machine or bring it into operation. It is also critically important that technical personnel 

and machine operators read these operating instructions and fully understand all information before 

installation and start-up. 

If there is any doubt that you have properly understood the information, immediately stop work on 

the machine and request assistance from the machine manufacturer. 

Make sure that these original operating instructions are always accessible at the place where the 

machine is used. 

In addition to the pump's operating instructions, you must also read and understand the operating 

instructions for the associated drive. These instructions must also be accessible at all times. 

All numbers inside brackets “[ ]” after individual pump parts refer to item numbers in Section 10.1, 

page 31. 

1.1. Related documents 

"Related documents" are documents that were included with delivery but not contained in the 

operating instructions. If any of the documents listed below are not present, please contact the 

manufacturer. 

Related documents include: 

• Technical documentation/operating instructions from the motor manufacturer. 

• Motor manufacturer’s certificate from the Physikalisch-Technische Bundesanstalt (PTB). 

• Optional: Technical documentation of the temperature-monitoring sensor (PT100). 

If you are the installer or if you operate or work on the machine, you must read and understand the 

related documents before installation and start-up of the machine. Make sure that these documents 

are always retained at the place where the machine is used. 

1.2. Intended use 

The pumps described in these operating instructions are designed to move liquids that are not 

corrosive or aggressive towards the utilized materials (Section 1.6 page 6). In the following text, 

suitable liquid is referred to simply as "liquid." 

If you require additional information not contained in these operating instructions, please contact 

Ernst Scherzinger GmbH & Co. KG, 78120 Furtwangen / Germany. If you require assistance, 

indicate the exact model and serial number of the pump. The pump type (Typ), year of manufacture 

(Bj.), and serial number (Nr.) are located on the pump's nameplate (Section 5, page 5). 

1.3. Product information 

These operating instructions are applicable to the following pump types 





4030-710-.M... 4030-710-B-.M... 

manufactured by Ernst Scherzinger GmbH & Co. KG, 78120 Furtwangen, Germany, beginning in 

January of 2010. 

The pumps are numbered consecutively. Serial numbers begin at zero each year. 

The date of release and version of the operating instructions can be seen on the title page and at 

the footer of these operating instructions. 



1.4. Pump dimensions 

Pump with motor: 

Figure 1 Dimensions with motor 

1.5. Nameplate description (cover markings) 

Nameplate of pump with motor: 

4030-450-B-DM-55-2 

Drive speed 

Drive power 

Drive variations 

Basic variation 

Rating 

Basic type 

Figure 2 Nameplate of pump 

with motor 

Month 

Year 

Serial number 

Version: 1.4 Date: 22.10.2012 5


1.6. Pump specifications 

Max. differential pressure increase 

12 bar 

Max. system pressure (pressure side) 100 bar 

Max. suction negative pressure 

0.9 bar (filled with liquid) 

Operating temperature 

-20 to 130 °C with PEEK gears /bearing 

-20 to 70 °C with PTFE gears/bearing 

Viscosity range 0.5 to 10,000 mm 2 /s 

Speed range 

0 to 4000 1/min 

Noise Level 

< 50 dB(A) measured at 2500 1/min, 

Speed 2500 1/min, 

Operating pressure 2 bar 

Operating temperature 20 °C 

Liquid 1 mm²/s, 

Non-lubricating 

Storage temperature 5°C to 50°C 

Dimensions 

Refer to data sheets 




in Section 1.4, page 5 

Parts contacting liquid: 

Casing [1], [2], [16]: 1.4404 

Shafts [3], [4] 1.4404 

Gears [5], bearing [6] 

PEEK mod, 

PTFE 25% carbon in type /TE 

Magnetic coupling hub [14] 1.4404 

Locking screw [25] A2 70 

Valve plate [30] 

PTFE 

Adjusting screw [31] 1.4404 

Seals [28], [33] 

PTFE 

Pressure spring [34] 1.4568 

Pumped liquid 

Observe the resistance of the materials listed 

above. 

Max. possible speed in terms of liquid viscosity: 

4000 

max. Pump speed (1/min) 

3500 

3000 

2500 

2000 

1500 

1000 

500 

0 

1 10 100 1000 10000 

Liquid viscosity (mm²/s) 

Figure 3 Viscosity range 



Capacity in terms of differential pressure for pumps 4030-280 and 4030-280-B 

Viscosity 1mm²/s: 

8 

7 

output volume (l/min) 

6 

5 

4 

3 

2 

1 

Q @ 2900 1/min 

Q @ 1450 1/min 

Q @ 750 1/min 

0 

0 1 2 3 4 5 6 7 8 9 10 

differentiale pressure (bar) 

Figure 4 Differential pressure range for pumps 4030-280 and 4030-280-B 



12 


10 

8 

6 

4 

2 

Q @ 2900 1/min 

Q @ 1450 1/min 

Q @ 750 1/min 

0 

0 1 2 3 4 5 6 7 8 9 10 

differential pressure (bar) 

Figure 5 Differential pressure range for pumps 4030-450 and 4030-450-B 



20 

18 


16 

14 

12 

10 

8 

6 

4 

2 

Q @ 2900 1/min 

Q @ 1450 1/min 

Q @ 750 1/min 

0 

0 1 2 3 4 5 6 7 8 9 10 

differential pressure (bar) 

Figure 6 Differential pressure for pumps 4030-710 and 4030-710-B 

Version: 1.4 Date: 22.10.2012 7


If one or more of the limit values described in this section are exceeded, contact the factory and 

request manufacturer approval for these operating conditions. If approval is not possible, the pump 

will require modification for use with your application. Failure to do this may damage or destroy the 

pump or the system in which the pump is integrated, and may represent a risk of personal injury. 

1.7. Noise Level 

Noise level was measured under the following conditions: 

Sensor distance from pump: 1 m 

The pump's noise level is below 70 dB(A) at all operating points. 

1.8. Non-ionizing radiation 

A pump with a magnetic coupling emits non-ionizing radiation in the form of a magnetic field. This 

radiation may destroy magnetically sensitive products. Examples of such products include: 

• implanted medical devices such as pacemakers 

• credit cards 

• electric, electronic, and finely-engineered mechanical devices such as hard drives. 

Refer to Section 3.3 page 12 for essential special safety notices. 

1.9. Foreign representatives 

A list of our global representatives, including addresses, can be requested from the factory or 

downloaded at www.scherzinger.de. 

Most representatives are sales subsidiaries; some perform repairs and maintenance. However, 

most repairs and maintenance are performed at our main factory in Furtwangen, Germany. 


Safety 

2. Safety 

Observe not only the general safety notices under this section "Safety," but also the special safety 

notices described under the other main points. 

2.1. Labeling of notices in the operating instructions 

Failure to observe the safety notices contained in these operating instructions can lead to 

hazardous situations. These notices are labeled as follows: 

Failure to observe will result in personal hazards. 

Failure to observe will result in the hazard of electrical voltage. 

These notices regarding explosion protection must be observed at all times. Failure 

to observe these notices will result in a risk of explosion and personal injury. 

WARNING 

Failure to observe these notices may damage or destroy the machine. 

Observe the nameplate attached to the pump and keep it completely readable at all times. 

2.2. Protective clothing 

Safety glasses 

Wear safety glasses when working with the machine to protect against 

spraying liquids or flying parts. 

Protective gloves 

Wear protective gloves at all times when working with the machine. 

Protective shoes 

Wear sturdy, insulated safety shoes with steel tips for protection from 

falling parts. 

Ear protection 

To avoid hearing damage, always wear ear protection when working 

within the machine's/system's noise range. 

Protective clothing 

Always wear clothing that will provide suitable protection from the liquid 

being pumped. 

Version: 1.4 Date: 22.10.2012 9

Safety 

2.3. Personnel qualification and training 

Personnel who perform assembly, operation, and maintenance tasks must be properly qualified. 

The operator is responsible for clearly defining areas of responsibility, monitoring personnel, and 

ensuring that all regulations are followed. If the personnel lack the required knowledge, they must 

be provided with training and instruction. The operator must also ensure that the personnel fully 

understand the operating instructions and can view the operating instructions at any time. 

People who have active or inactive implanted medical devices such as heart pacemakers must not 

work on magnetic parts and must stay away from pumps with magnetic couplings. It is the 

operator’s responsibility to see that all employees who have contact with the machine are informed 

of the possible dangers. 

2.4. Dangers of failure to observe safety notices 

Failure to observe the safety notices can result in dangers to people and the environment, as well 

damage to the pump. Failure to observe safety notices may lead to loss of any damage 

compensation claims. Specifically, failure to observe safety notices may result in the following 

dangers: 

• Failure of important pump functions. 

• Failure of required methods for maintenance and repair. 

• Electrical, mechanical, and chemical hazards. 

• Environmental damages caused by escape of hazardous materials. 

• Thermal non-ionizing radiation in the form of a magnetic field. 

2.5. Working in a safe manner 

The safety notices contained in these operating instructions, current national regulations for 

accident prevention, and any internal working, operating, and safety regulations specified by the 

operator must be observed at all times. 

2.6. Safety notices for the operator 

Operate the pump only in a technically flawless condition in compliance with regulations and the 

operating instructions. 

As operator, you are required to provide personal protective equipment. 

If hot or cold parts create a hazard, as operator you must secure these parts against contact at the 

site of installation. 

Leaks of hazardous (explosive, toxic, or hot) liquids must be diverted in such a way that they will 

not represent a hazard for people or the environment. Always obey all legally defined directives. 

Regularly remove dust deposits if they lead to dangers when operating the pump in a potentially - 

explosive atmosphere. 

Eliminate any hazards associated with electrical energy (refer to regulations of the Association for 

Electrical, Electronic & Information Technologies (VDE) and local power companies). 

2.7. Safety notices for maintenance, inspection, and assembly tasks 

The operator must ensure that all maintenance and assembly tasks are performed by authorized 

and qualified personnel who have obtained adequate information through careful reading of the 


• Work on the pump may be performed only when the pump is shut off. 

• Shut off the motor's power supply and lock it in the off position before all assembly and 

maintenance tasks. 

• Pumps or systems that move hazardous liquids must be decontaminated. 

• Ensure that the pump is not located within a potentially explosive atmosphere. Ventilate the 

area or render the atmosphere inert, or move the pump to an area that is not potentially 

explosive. 

• Always wear personal protective equipment (see Section 2.2, page 9). 

• Immediately after concluding work, replace all safety and protection devices and ensure that 

they are operational. 

• The points listed under the Section 7, "Initial startup” (page 20), must be observed before 

bringing the machine into operation. 


Safety 

2.8. Unauthorized conversion and production of spare parts 

Changes to or conversion of the pump is permissible only with the approval of the manufacturer. 

Unauthorized interventions may damage the pump and the attached system and/or cause injury. 

Original spare parts and manufacturer-approved accessories promote safety. Use of other parts 

may nullify liability for any resulting consequences. 

2.9. Impermissible operating methods 

Operational safety of the delivered machine is ensured only through proper use as described in 

Section 1 (page 4) “General information” of the operating instructions. The values specified in the 

data sheet and in Section 1.6, page 6 may not be exceeded under any circumstances. Operating 

the machine outside of these specifications may damage the machine and result in injury. The 

manufacturer is not liable for damages caused by operating the machine beyond its limitations. 

Version: 1.4 Date: 22.10.2012 11

General danger points 

3. General danger points 

In spite of all safety measures, danger to life and limb of the user or third parties may arise during 

use of the pump, or damage may occur to the system or other property. 

3.1. Hazards presented by the pumped liquid 

Escaping or squirting liquid represents a danger of injury or poisoning. Always wear appropriate 

protective clothing (see Section 2.2, page 9) when working with the pump. 

Examples of hazardous liquids include: 

• Potentially explosive liquids 

• Flammable liquids 

• Corrosive liquids 

• Toxic liquids 

• Radioactive liquids 

• Irritating liquids 

• Liquids that are hazardous to health 

• Carcinogenic liquids 

• Hot liquids 

• Cold liquids 

3.2. Danger of electrical energy 

All work on the electrical supply must be performed by trained electricians. 

Direct or indirect contact with voltage-carrying parts, high voltage, electromagnetic and magnetic 

fields, and short circuits represents electrical hazards for anyone working on the pump/system. To 

minimize these hazards, observe the relevant safety notices and take safety precautions (see 

Section 2, page 9). 

3.3. Dangers of the magnetic coupling 

The magnetic coupling's magnetic field represents a danger to life and property. 

Please observe the following points: 

• People with heart pacemakers may not perform any work on the pump. 

• Make sure that people with heart pacemakers maintain a distance of at least 1 m. 

• Make sure that no magnetizable metal parts can be attracted to the magnetic coupling. 

• Make sure that objects sensitive to magnetization maintain a distance of at least 150 mm. 

3.4. Danger of moving parts 

Safety components attached to the pump that are designed to provide protection from moving parts 

may not be removed while the pump/system is in operation. 

3.5. Hazards caused by hot components 

If hot components present a danger, install protective devices to prevent contact with the hot 

components. 

3.6. Hazards caused by dust 

When operating the pump in a dusty environment, regularly remove dust that collects on the 

surface of the pump and motor. Increase the frequency of dust removal based on the amount of 

dust. If a large amount of dust collects on the pump or motor, excessive heat may build up and 

spontaneous combustion may occur. 

3.7. Hazards of special fields of operation 

If using the pump to transport food or for applications related to cosmetics or pharmaceuticals, 

exercise special care when using cleaning, disinfecting, or flushing agents. 

Make sure that the pumped liquids do not become contaminated with residual cleaning and/or 

flushing/disinfecting agents. It is advisable to use only liquids that, in the event of contamination to 

the pumped liquids, will not have harmful effects. 

Take precautions to ensure complete removal of residuals before resuming operation. 

Refer to Section 5.4 (page 15) for instructions on proper flushing of the pump. 


Description of the pump 

4. Description of the pump 

4.1. How a gear pump works 

In a gear pump, two counter-rotating gears within a pump casing generate the pumping action. The 

gears are attached to two shafts whose bearings are located in the pump casing and pump cover. 

One of the two gears is driven by a shaft; the second gear is driven by meshing with the first gear. 

As gaps open between the teeth of the gears, negative pressure is generated that sucks the liquid 

into the pump and transports it between the tooth gaps and the wall of the casing. When the liquid 

reaches the other side of the gears (where they again mesh with each other), it is pushed out of the 

gaps between the teeth and into the discharge section of the pump. As a result, liquid can also be 

pumped against positive pressure. 

Figure 7 How a gear pump works 

4.2. Structural design of the pump head 

4.2.1. Basic design 

The pump head consists of two parts, the casing [1] and the cover [2]. This design permits simple, 

rapid, and economical maintenance and repair. The casing [1] and the cover [2] are screwed 

together with two screws [21]. Two cylindrical pins [18] determine the exact positions of these parts 

relative to each other. A seal ring [28] is installed between the casing and the cover. The gears [5] 

pressed onto the shafts [3], [4] are mounted axially in the casing and the cover. The shaft bearing 

in the casing and cover is provided by plain bearings [6]. The rotational motion is transferred from 

the drive unit to the pump via a magnetic coupling [14], a drive shaft [3], and a drive gear [5]. 

Scherzinger laboratory pump heads of the 4030 series are available in three different sizes (size – 

028 to size -710). Theoretical pump capacities are as follows: 

Pump head Vg th displacement Q th at 1400 1/min Q th at 2800 1/min 

-280 and -280-B 2.80 cm³/U 3.92 l/min 7.84 l/min 



Table 1Pump data 

4.2.2. Pressure relief valve, only on 4030-280-B, 4030-450-B, and 4030-710-B 

The pressure relief valve (bypass valve) provides pressure relief. Its adjustment range is between 

0.5 and 6.0 bar and 5.0 and 12.0 bar, depending on which pressure spring is installed. 

When the valve is triggered, the liquid is directed back internally from the pressure side to the 

suction side, thereby avoiding any damage to the system or pump head. 

Refer to Section 7.3, page 20 for instructions on proper valve adjustment. 

Version: 1.4 Date: 22.10.2012 13

Description of the pump 

4.2.3. Magnetic coupling 

WARNING 

The magnetic coupling hermetically seals the pump head. In other words, it is not necessary for a 

rotating shaft end to protrude outward. As a result, wear-induced leaks are not possible because O- 

rings [28] are used only for static seals. 

Six alternately-magnetized magnets on the inner circumference of the magnetic coupling bell [15] 

transfer torque through a non-magnetizable separating wall (containment can [16]) to the magnetic 

coupling hub [14]. Another six magnets with alternating polarity are arranged on the outer 

circumference of the coupling hub. 

On 4030-280-B, 4030-450-B, and 4030-710-B only, the magnetic coupling (in addition to the 

pressure relief valve) acts as an overload protector which prevents damage to the pump head at 

higher pressures. As soon as the maximum amount of transferable torque is exceeded, the 

magnetic field disconnects and the drive continues to run with almost no resistance. The system 

starts to rattle uniformly and the pump head comes to a standstill. Pumping ceases. 

Operating times of more than two minutes in the decoupled condition will cause the magnets to 

heat up, and the magnets may become demagnetized:. If this happens, the amount of transferred 

torque (and thereby the level of pressure that can be achieved) will decrease. Avoid operating the 

pump in this condition. 

[15] 

[16] 

[14] 

Drehrichtung 

Direction of rotation 

Magnetkraft 

Magnetic force 

Figure 8 Magnetic coupling 


Transport and storage 

5. Transport and storage 

5.1. Shipping the pumps and protective measures 

The pumps are sent from the factory in a way that protects them against impacts and blows. Inlets 

and outlets are also sealed with protective plugs. These measures are required in order to prevent 

the escape of any liquid that remains in the pump head after a test run. Connection threads are 

also protected in this way. This reliably prevents penetration of foreign objects into the pump. 

5.2. Transport 

5.3. Storage 

Pumps that leave our factory are in a flawless condition and are sent in appropriate packaging 

materials. Immediately after receiving your pumps, inspect them for damage incurred during 

transport. If damage is discovered, immediately report this to the freight forwarding company and 

Scherzinger Pump Technology. 

If placing the pump into storage, observe the following points: 

• Do not store the pump in wet or moist areas. 

• Insert the protective plugs or leave them in place. 

• If placing the pump into storage for more than six months, apply corrosion protection to 

uncoated metal parts. 

• Ensure that storage areas do not contain ozone-generating equipment such as fluorescent 

light sources, mercury vapor lamps, or electric high-voltage devices. 

• Prevent the formation of condensation. Ideally, relative air humidity should be below 65%. 

Avoid higher air humidity. 

5.4. Preservation for storage after operation/flushing of the pump 

WARNING 

The pump must be prepared for storage in different ways depending on the liquid pumped. If no 

toxic or aggressive liquids were pumped, flush the pump briefly with water at low speed without 

increasing differential pressure. 

If toxic or aggressive liquids were pumped, clean the pump in a way that any subsequent 

maintenance tasks can be performed without endangering the health of personnel. Flush the pump 

at medium speed with a neutralizing liquid. Disassemble and manually clean the parts that were 

not completely cleaned during the flushing process. Pay special attention to the magnetic coupling 

and the pressure relief valve (if present). 

If solidifying liquids (such as coatings) were pumped, the pump must be completely disassembled 

and each individual part of the pump must be cleaned in order to ensure flawless functionality when 

the pump is restarted. Use conventional cleaning agents or solvents (refer to Section 1.6, page 6 

for information about resistance). After reassembling the pump, flush it once more with water at 

medium speed. 

Observe all regulations on handling hazardous materials! 

5.5. Sending the pump back to the factory 

If sending the pump back to the factory for repair or maintenance, you must completely fill out the 

Safety Declaration in Section 11 on page 33 and include it with the shipment. Failure to do this will 

prevent us from handling your repair! 

There is a danger of chemical burns or explosion when certain pumped liquids react with the 

flushing/cleaning agent. 

To eliminate the possibility of a dangerous chemical reaction between the pumped liquid and the 

flushing/cleaning agent, use a flushing/cleaning agent that is compatible with the most recently 

pumped liquid. 

Version: 1.4 Date: 22.10.2012 15

Set-up/Installation 

6. Set-up/Installation 

6.1. Place of installation 

WARNING 

When selecting the place of installation, make sure that it has adequate space for maintenance and 

repair tasks. Make sure that you can easily remove and reinstall the pump. 

Did not install the pump in an aggressive atmosphere. 

6.2. Installation position 

WARNING 

Please observe that the pump unit is designed for horizontal installation. In exceptional cases, the 

pump unit can be installed vertically, however please observe that the drive unit is positioned 

above the pump. In this case increased noise emission can be expected. 

6.3. Installing the magnetic coupling (only when switching motors) 

Slide the magnetic coupling bell [15] loosely onto the motor shaft. Align the inner face of the 

magnetic coupling bell [15] to the end of the motor shaft, and make sure that both parts flush 

properly. Use a 3mm hexagonal screwdriver to tighten the threaded pin [24]. Then screw the motor 

onto the motor flange [12]. 

Figure 9 Assembling the magnetic coupling 

6.4. Electric drive 

WARNING 

The pump described in these operating instructions is delivered with an electric drive. The drive is 

of type IMB34, size 71, with a shaft geometry of 14 dia. x 30 mm, and a flange outer diameter of 

105 mm, or type IMB34, size 80 ,with a shaft geometry of 19 dia. x 40 mm, and flange outer 

diameter of 160 mm, according to IEC. 

Do not exceed the maximum permissible ceiling speed or the maximum permissible speed as 

appropriate for the liquid viscosity (Section 1.6, page 6). 



When assembling the unit, pay special attention to the position of the screw plug [19]. When 

installation is complete, the screw plug must point down! 

Also note the explosion protection class of the pump and the other components. This information is 

provided on the nameplates of each component. When operating in potentially explosive areas, the 

lowest ignition protection class of all of the components is applicable. 

Ground the motor/pump-unit to the drive's connection terminal provided for this purpose. When 

installing the motor, do not place any insulating elements between the pump bracket and the motor. 

The connecting bolts between the pump/motor and base plate must be made of electricallyconductive 

material, such as steel. 

Perform installation work only while the drive unit is shut off. 

WARNING 

Never install motor-driven pumps in tight quarters without adequate ventilation, as the motor will 

not cool properly and may overheat. 

The motor's electrical connection must be established in accordance with VDE directives and any 

directives established by the local power supply company. Please also observe the included motor 


Because a variety of motors are available, this document does not provide great detail about the 

drive. Please observe the included motor documentation. 

6.5. Initial installation 

WARNING 

Observe the ignition protection class of not only the pump, but of all installed components. The 

nameplates of each component provide the necessary information. When operating in potentially 

explosive areas, the lowest ignition protection class of all of the components is applicable. 

First, perform a visual inspection to discover any damage to the pump that may have been caused 

during transportation (see Section 5, page 15). 

Then check the following items to make sure you have the correct pump type: 

• Corrosion behavior of liquid 

• Liquid viscosity 

• The liquid that will be pumped 

• Pump capacity (flow rate) 

• Model and version 

• Direction of rotation and position of the suction/discharge sides 

• Temperature range 

If you discover any differences between the pump required for your system and the pump we have 

delivered, please contact us immediately. Do not bring the pump into operation without contacting 

us first. 

Screw the pumps/pump units only to the foot provided for this purpose. Make sure that the place of 

installation is level. Use suitable spacers to correct any unevenness near the connection points so 

the pump/pump unit is even across these four points. If strong vibrations occur during operation of 

the pump, follow the points provided in the Troubleshooting Table (Section 9, page 28). 

It is important that the drive turns the pump in the proper direction so that the pumping direction is 

correct. Reversing the direction of rotation will also reverse the flow direction. Pumps 4030-280-..., 

4030-450-..., and 4030-710-... are designed to work in both rotational directions, so the pump will 

not be damaged if the direction of flow is not observed. 

With pumps 4030-280-B-..., 4030-450-B-..., and 4030-710-B-... it is essential to observe the 

prescribed direction of rotation; operating in the incorrect directions will prevent the pressure relief 

valve from operating. Operating in the incorrect direction may cause significant damage to the 

system and present a danger for operating personnel. 

A fall test according to DIN EN 13 463-1, Section 13.3.2.1 has not been performed. Protect the 

pump as well as possible from shaking and impacts. Shaking or impacts may influence 

functionality, but not explosion protection. 

Version: 1.4 Date: 22.10.2012 17


6.6. Connection lines 

WARNING 

Before installing the suction and discharge lines, make sure that the piping's connection flanges 

match the flanges on the pump. 

No force or torque may be exerted on the pump through the connection lines. If the connection 

lines exert any force or torque on the pump, support the connection lines close to where they 

connect with the pump. Also make sure that no forces caused by heat expansion act on the pump. 

Use connection lines of adequate dimensions. Do not connect any lines whose nominal width is 

smaller than the nominal width of the pump connections. On the suction side of the pump, we 

recommend using connection lines that are one size larger than the pump's suction connection. 

The following table provides guidelines for the maximum flow speed in the lines: 

up to 200 mPas up to 600 mPas up to 2000 mPas 

Suction line 1.5 m/s 0.5 m/s 0.2 m/s 

Pressure line 3.0 m/s 1.0 m/s 0.5 m/s 

Table 2 Recommended flow speeds 

WARNING 

WARNING 

WARNING 

To avoid penetration of foreign objects that could lead to damage to the pump, install a suction filter 

with filter fineness of at least 50 µm. Choose a suction filter of an adequate size, so that its internal 

resistance will not negatively affect the pump's suction capabilities. 

Where bends in the lines are necessary, use the largest possible radius. Avoid sharp pipe elbows 

wherever possible. 

Install the suction line so it inclines upward towards the pump. If lines must be installed sloping 

upward and downward, provide ventilation at the highest positions. 

After installing the pipelines, make sure that they are free of deposits, chips, or similar 

contaminants. Such objects could damage the pump when it starts. 

Ensure that all lines, valves, and screw fittings are perfectly sealed; improper sealing can result in 

gas entering through the suction side, and the pump will no longer generate suction. Liquid may 

also flow out on the pressure side. 

If the suction head reaches 3 m, we recommend installing a foot valve into the suction line. When 

the pump is shut off, this valve will prevent liquid from flowing back through the pump, or the 

suction line from emptying. 

In this situation, make sure that the pressure at the inlet is the same as the pressure at the 

discharge when the pump is stopped. When doing this, observe the maximum system pressures 

(see Section 1.6, page 6). 



Recommended installation in potentially explosive areas: 

Internal Druckbegrenzungsventil pressure relief intern valve nur only bei: on: 

3030-045-B 4030-280-B 

3030-070-B 4030-450-B 

3030-110-B 

4030-710-B 

Non-return valve 

Rückschlagventil 

Pressure line 

Einlass Inlet 

Discharge Auslass Druckleitung 

Pumpe 

Filter 

Temperature Temperaturfühler sensor 

Figure 10 Piping installation 

Noise-insulating elements, such as flexible hose connections, may be necessary on the piping. 

If you are not using the pump in a potentially explosive area, it may be useful to install stop valves 

immediately before and after the pump. Then, if the pump must be removed, it will not be 

necessary to empty the piping system. 

Version: 1.4 Date: 22.10.2012 19

Starting/stopping 

7. Starting/stopping 

7.1. Preparing for operation 

After installation is complete, inspect the pump and peripheral equipment once again using the 

following checklist: 

• Can you manually turn the pump (at the motor fan, for example)? 

• Have you properly connected the suction and pressure sides? 

• Does the drive's direction of rotation match the pump's direction of rotation? 

• Are the gate valves, butterfly valves, and other valves in the system in the proper positions? 

• Has the piping system been checked for leaks? 

• If a previously undiscovered or unanticipated malfunction occurs during initial startup, can 

the pump be stopped immediately (emergency stop)? 

• Is there an adequate quantity of the proper pumped liquid in the reserve container? 

• If the temperature difference between the pump and the pumped liquid is greater than 

50 °C, adjust the temperature of the pump before st arting. 

Perform installation work only while the drive unit is shut off. 

7.2. Startup 

• If necessary, disinfect the pump head and piping system. 

• In order to avoid contaminating the pumped liquid, we recommend flushing for at least five 

minutes with the liquid that will be pumped, at an appropriate speed, to remove all residual 

quantities of any test liquid from the pump head. 

• Adjust the pressure relief valve according to Section 7.3 on page 20. 

• Do not allow the pump head to run dry for more than 30 seconds; longer dry-running times 

may destroy the pump. 

Make sure that the pumped liquid's ignition temperature is at least 50°K above the maximum 

permissible surface temperature of the pump. 

7.3. Adjusting the pressure relief valve (4030-280-B, 4030-450-B, and 4030-710-B only) 

The pressure relief valve is a safety valve for protecting the pump and the system. If you require 

precise pressure adjustment, you will need a more exact external pressure adjustment valve. Using 

the safety valve as a pressure relief valve can cause the discharge pressure to fluctuate. 

The integrated pressure relief valve allows you to set the relative pressure increase to a desired 

target value. 

The pressure relief valves are checked at the factory for proper functionality during the pump test 

run. The valve’s pressure is set at the factory only when specifically requested. 

Adjust the pressure relief valve while the pump is running. Measure the pressure increase on the 

pressure side of the pipework. Ensure that the proper conditions (operating conditions that will be 

encountered later) are present during adjustment. 

• Pumped liquid 

• Temperature 

• System pressure 

• Speed 



Figure 11 Adjusting the pressure relief valve 

Proceed as follows to adjust the pressure relief valve: 

• Loosen the locking nut [32] by one-quarter turn (counterclockwise). 

• Adjust the valve by turning the overpressure valve screw [31]. 

o Turning to the left (counterclockwise) ►lowers the opening pressure 

o Turning to the right (clockwise) ► increases opening pressure. 

• Retighten the locking nut [32]. 

The overpressure valve screw [31] must not protrude more than 7mm from the locking nut [32]. It is 

possible that small amounts of liquid may leak out of the pressure relief valve while the locking nut 

[32] is loose. 

The pressure relief valve provides only short-term overload protection. If open for an extended 

period of time, the pump head may overheat and become damaged or destroyed. The surface 

temperature may exceed critical values (see Section 7.4, page 21). 

7.4. Monitoring 

WARNING 

The operator is solely responsible for performing monitoring tasks. 

To monitor pressure on the suction side (inlet pressure or vacuum, respectively) we recommend 

installing a pressure-monitoring device; on the discharge side, we recommend installing a pressure 

monitoring device suitable for the operating conditions. Deviating from the pump data specified in 

Section 1.6 (page 6) may damage the pump. 

Pumps 4030-280, 4030-450, and 4030-710 must not be operated against a closed system. The 

exception to this is when an external overload valve or temperature monitoring device has been 

installed. The same applies to pumps 4030-280-B, 4030-450-B, and 4030-710-B, when the 

pressure relief valve is not functional. 

The pump will heat up if operated against a closed system (see Figure 12, page 22). 

Measurements have shown that 120°K of heat will be generated within 7 minutes (speed 2800 

1/min; opening pressure 7 bar; sealed pressure line). Surface temperature must be monitored 

under these operating conditions. You must shut off the pump at least 30°K below the maximum 

permissible surface temperature, as the surface temperature may continue to climb after shutdown. 

If the pump is equipped with a temperature monitoring sensor (PT100) from Scherzinger, take note 

of the separate attached documentation. 

Version: 1.4 Date: 22.10.2012 21


The following table lists shut-off temperatures, expressed in T classes: 

Temperature class T1* T2* T3* T4 T5 T6 

Max. liquid temperature 405 °C 255 °C 155 °C 90 °C 55 °C 40 °C 

Table 3 Shut-off temperatures 

WARNING 

* PEEK gears cannot be used with liquid temperatures above 130°C; PTFE gears cannot be used 

with liquid temperatures above 70°C. Exceeding thes e temperatures will destroy the pump. 

The following chart shows the profile of elevated surface temperatures when the pressure line is 

sealed and recirculation continues without interruption through the internal pressure relief valve. 

Liquid temperature was at ambient temperature (20°C ) at the beginning of the measurement. 

70 

60 

surface temperature 

increase (K) 

50 

40 

30 

20 

10 

0 

0 10 20 30 40 50 60 70 80 90 100 

time (min) 

Figure 12 Elevated temperature profile 

If the ambient temperature is above the liquid temperature, surface temperature may increase even 

more! 

Take the following steps for early detection of leaks around the magnetic coupling: 

Remove the screw plug [19] and check to see whether leaked liquid has collected in the flange 

[12]. Perform these steps: 

• after startup, 

• once per month 

If a leak is detected, immediately remove the pump from operation and fix the leak. 

Danger of injury: If a leak is present, hot, toxic, or corrosive liquid may escape; wear suitable 

protective gloves. 

After completing inspection, replace the screw plug and the seal. A pump without a screw plug may 

not be operated in II 2 D - Ex zones! 

Regularly remove dust that has collected on the surface of the pump, drive, and connection lines in 

order to prevent this material from igniting. Frequency of cleaning is based on the volume of dust 

that collects. 

Monitor the magnetic coupling for unusual noises. If grinding noises occur, immediately take the 

pump out of operation. Check the pump for signs of wear. Rubbing of metallic parts can lead to 

overheating or sparks. 

It is not necessary to install dry-running protection for the pump. Longer periods of dry running will 

destroy the pump but will not affect its usage in II 2 D G zones. 



If the pump is not equipped with an integrated pressure relief valve, we recommend using an 

external pressure relief valve. Usage of an overpressure valve will prevent excessive heating of the 

pump, such as when pumping against a sealed pressure line. 

If the pump is operated for an extended period of time while decoupled, the pump's surface 

temperature will increase and may exceed critical values. The following chart shows the profile of 

elevated temperature when the pump is blocked. 

12 

surface temperature increase (K) 

10 

8 

6 

4 

2 

0 

0 10 20 30 40 50 60 70 80 90 100 

time (min) 

Figure 13 Elevated surface temperature profile when pump is blocked 

7.5. Taking the pump out of operation 

Make sure that there is not an explosive atmosphere outside of the pump. 

• If possible, reduce the speed of the drive unit (motor speed control) to no more than 1500 

1/min. 

Completely empty the pump head by reducing counterpressure to 0 bar and removing the 

suction line from the reserve container so ambient air can be drawn in. 

Caution! 

Do not take the pump out of operation while the system is under pressure or vacuum or 

contains reactive liquid. 

• Do not allow the pump to run dry for more than 30 seconds, as this may destroy the pump. 

• If potentially hazardous liquids have been pumped, flush the pump head with a suitable 

cleaning or neutralization solution for several minutes. 

• Then flush the pump once again with water. 

Close any stop valves that are in place before and after the pump. Close the stop valves only when 

the pump is stopped for a prolonged period of time (in automatic systems, only when the entire 

system is taken out of operation). 

7.6. Removal from the system 

Turn off the drive unit! Make sure that the steps described in Section 7.5, page 23 have been 

completed. 

Remove connection lines. 

As shown in the following figure, remove the three attachment screws [20] that attach the pump to 

the motor flange [12]. The magnetic force of the magnetic coupling will continue to hold the pump in 

position. Next, pull the pump forward, straight off of the motor. Do not allow foreign objects to 

become attracted to the magnetic coupling. Attention: Danger of injury! 

Version: 1.4 Date: 22.10.2012 23


Figure 14 Removal from drive 

7.7. Disposing of the pump 

The pump, accessories, and liquid must be disposed of in accordance with applicable national 

regulations. 

Pump components may be contaminated with toxic or radioactive liquids. These parts must be 

cleaned with the appropriate flushing/cleaning agents before disposal. To eliminate the possibility 

of a dangerous chemical reaction between the pumped liquid and the flushing/cleaning agent, use 

a flushing/cleaning agent that is compatible with the most recently pumped liquid. Wear appropriate 

protective clothing (see Section 2.2, page 9). 

The pump manufacturer assumes no responsibility for disposal. 


Maintenance 

8. Maintenance 

8.1. General notices 

Before performing maintenance, make sure that the pump has been flushed with a safe liquid. If 

the pump has been operated with hazardous liquids, maintenance must be performed in 

observance of appropriate protective measures (see Section 2.7, page 10). 

Completely fill out the attached Safety Certificate before sending the pump. Pumps will not be 

accepted for repair without the Safety Certificate. 

8.2. Maintenance cycle 

The pump does not require a fixed maintenance cycle. Cleaning/maintenance is necessary in the 

following situations: 

• when the pump is placed into storage 

• when the pump is taken out of operation for a prolonged period of time 

• when the pump no longer fulfills the specifications provided in Section 1.6, page 6 

• when a different liquid will be pumped 

• if the pump leaks 

Observe sections 5.3, 7.4, and 9.0 on pages 15, 21, and 31. 

8.3. Disassembly and reassembly 

WARNING 

When performing any maintenance tasks that require disassembly of the pump, always replace 

all O-rings during reassembly of the pump. Otherwise, the pump may leak. It is also important to 

keep the workspace completely clean, as dirt may prevent the pump from operating properly. 

8.3.1. Assembly tools 

You will need the following tools: 

8.3.2. Pump body 

• 3, 4, 5, and 6-mm allen wrenchs 

• 10-mm regular screwdriver, 1.4 mm thick 

• 22-mm box or open-ended wrench 

• Internal extractor for bearing bushes (inside diameter 8 mm) 

• Pressing die (outside diameter 9 to 9.5 mm) 

• Torquing screwdriver (50 to 1000 Ncm) 

Figure 15 Pump body 

Version: 1.4 Date: 22.10.2012 25

Maintenance 

Disassembly 

• Remove the pump head from the drive unit (according to Section 7.6, page 23). 

• Place the pump head in front of you with the containment can [16] upward. 

• Open and remove the two machine screws [22]. 

• Open and remove the four machine screws [23]. 

• Remove the containment can with centering ring [16] upward. 

• Remove the O-ring [28] without damaging the O-ring seat. 

• Open the threaded pin [25] with two turns. 

• Remove the magnetic coupling hub [14] upward. 

• Open and remove the two screws [21]. 

• Carefully remove the pump cover [2]. 

• Remove the O-ring [28]. 

• You can now remove the cylindrical pins [18], drive shaft [3] with gear [5], and running shaft 

[4] with gear [5]. 

Reassembly 

• Hold the casing [1] with the gear chamber upward. 

• Insert the drive shaft [3] (longer shaft) into the central bearing seat of the casing [1] (longer 

end of the shaft downward). 

• Insert the running shaft [4] into the second bearing seat. 

• Insert the cylindrical pins [18]. 

• Insert the new O-ring [28]. 

• Carefully place the cover [2] onto the cylindrical pins [18]. 

• Turn the pump around. The free end of the shaft should now be pointing upward in front of 

you. 

• Turn the machine screws [21] and tighten to 220 Ncm. Check to see if the pump turns 

easily. 

• Place the magnetic coupling hub [14] onto the drive shaft [3]. 

• Tighten the threaded pin [25] to approximately 50 Ncm. Make sure that the threaded pin 

engages in the notch of the drive shaft [3]. 

• Insert the new O-ring [28]. 

• Place the containment can with centering ring [16] into position. 

• Insert the four machine screws [23] into the holes on the auxiliary flange [13]. 

• Insert all four machine screws [23] and tighten them evenly to 800 Ncm (alternately tighten 

each screw until all are uniformly tightened). 

• Turn the machine screws [22] and tighten to 800 Ncm. 

8.3.3. Pressure relief valve only on 4030-280-B, 4030-450-B, and 4030-710-B 

Figure 16 Pressure relief valve 


Maintenance 

Disassembly 

• Hold the pump or cover [2] in your hand. 

• Open the locking nut [32] one-quarter turn using a closed-end wrench. 

• Loosen the adjusting screw [31] until it is no longer engaged in the threads, then pull it out. 

• Remove the locking nut [32]. 

• Pull out the seal ring [33], pressure spring [34], and valve plate [30]. 

• Pull the seal ring [29] from the valve plate [30]. 

Reassembly 

• Push the seal ring [29] onto the valve plate [30]. 

• Slide the valve plate [30], pressure spring [34], and seal ring [33] into the valve hole. 

• Manually turn in the locking nut [32]. 

• Turn the adjusting screw [31] in until it is flush with the locking nut [32]. 

• Use a closed-end wrench to tighten the locking nut [32] to 800 Ncm. 

8.3.4. Bearing bushes 

Figure 17 Shaft bearing 

WARNING 

Disassembly 

We recommend sending the pump to Scherzinger to have the bearing bushes replaced, as this 

task can easily result in damage. 

• Disassemble the pump as described in Section 8.3.2, page 25. 

• Use an internal extractor to carefully pull the two bearing bushes [6] from the cover [2]. 

• Use the internal extractor to carefully pull the casing's [1] three bearing bushes [6] from both 

sides. 

Do not damage the bearing seat or the pump head's sealing surfaces during removal. Only 

qualified personnel may perform replacement. 

Reassembly 

• First, use the pressing die to press the two new bearing bushes [6] with the centering 

extension into the cover so they are set back 0.1 to 0.2 mm. 

• Press in the bearing bushes [6] of the casing [1] as explained in the previous step. 

• Assemble the pump as described in Section 8.3.2, page 25. 

Version: 1.4 Date: 22.10.2012 27

Disturbances, causes, removal 

9. Disturbances, causes, removal 

Number Type of disturbance 

1 The pump does not generate suction. 

2 The pump generates no or inadequate pressure. 

3 The pump emits noise. 

4 The pump heats up. 

5 The pump is loud and/or vibrates/oscillates heavily. 

6 The pump is blocked. 

Table 4 Overview of disturbances 



Type of 

disturbance 

Cause and removal of the disturbance 

1 2 3 4 5 6 

Ω 

Ω 

Ω 

The pump is running dry. 

There is no liquid in the suction line or the suction head is greater than 3m. 

Dry running for more than 30 seconds can destroy the pump and should therefore be avoided. 

Pumps of this series are dry self-priming up to 3m. However, suction behavior can be increased by 

filling the pump with liquid before starting. 

Piping configured incorrectly 

Improperly dimensioned pipes can have extremely negative effects on the pump's suction behavior. 

Observe the notices in Section 6.6 (page 18) - Connection lines. 

Ω 

Ω Ω 

Ω 

Ω 

Ω 

Pressure/suction line blocked 

If a stop valve is integrated into the pressure or suction side, make sure that it is open. If there is still 

air in the pressure line, make sure that it can escape. 

Parts of the pump are worn 

If the pump no longer has adequate suction performance, the suction and pressure lines are not 

blocked, and operating conditions have not changed, the pump probably requires maintenance. 

Suction line is not sealed 

Make sure that the suction line is completely air tight so that no ambient atmosphere can be drawn in. 

Connection line incorrect 

Check to see if the suction and pressure lines are reversed. 

Ω Ω 

Ω 

Ω 

Ω Ω 

Ω Ω 

Ω Ω Ω 

Ω 

Ω 

Foreign objects, dirt, and/or deposits may be blocking the pump. 

In most cases, this can be analyzed/resolved only by disassembling the pump. See Section 8.3, page 

25. 

Check the motor connection 

The polarity of the motor may be incorrect. Refer to the motor manufacturer’s operating instructions. 

Pump turning in the wrong direction 

See the direction of rotation indicated on the pump's nameplate. Example of nameplate on page 5. 

Internal pressure relief valve improperly adjusted (on 4030-280-B,4030-450-B, and 4030-710-B) 

Make sure that the overpressure valve integrated into the pump is closed enough that the liquid is 

moved with adequate pressure. See Section 7.3, page 20. 

Pipe blocked 

If block valves are located in the pipes on the pressure or suction side, make sure that they are open. 

Magnetic coupling decoupled 

If the magnetic coupling is decoupled, you will hear a rattling noise. One of the purposes of the 

magnetic coupling is to provide overload protection (see Section 4.2.3 on page 14). The magnetic 

coupling will decouple only if the operating conditions exceed (even briefly) the pump 

specifications. Stop the drive and restart the pump. If this problem reoccurs, remove the causes. 

Potential causes include: 

• Differential pressure too high 

• Liquid viscosity too high 

• Dirt in the pump 

Liquid viscosity too low 

Hydraulic efficiency of the pump depends on the viscosity of the liquid. If viscosity becomes too low 

due to the characteristics of the liquid or excessively high temperatures, this may result in a loss of 

pump capacity. 

Compare the current viscosity and temperature with the specified viscosity and temperature 

and correct them if necessary. 

See Section 1.6, page 6. 

Version: 1.4 Date: 22.10.2012 29


Type of 

disturbance 

Cause and removal of the disturbance 

1 2 3 4 5 6 

Ω 

Cavitation 

Depending on the vapor pressure of the liquid, if the inlet pressure (absolute) is too low or if the 

suction head is too high, vapor bubbles may form in the suction area of the pump. These bubbles will 

implode on the pressure side and cause elevated wear to the pump. Avoid this situation by changing 

the feed conditions. Audible as a high-pitched noise. 

Increase inlet pressure by reducing resistance in the lines. 

Reduce the liquid temperature. 

Ω 

Ω 

Ω 

Ω 

Normal operation? 

First check if this is normal heat generation associated with the liquid being pumped. After a short 

period of time, the surface of the pump will be at the same temperature as the liquid. 

Continuous internal overflow on 4030-280-B, 4030-450-B, and 4030-710-B 

If the differential pressure between the inlet and outlet sides exceeds the adjusted opening pressure 

of the overpressure valve, the internal overpressure valve will open and the liquid will be circulated 

inside the pump head (see Section 7.3 on page 20). This will cause the pump head to heat up. 

Liquid temperature range or permissible pump temperature exceeded 

Check if the liquid's temperature range has been exceeded. 

See Section 1.6, page 6. 

Ω 

Ω 

Component worn? 

If you hear grinding noises, this is an indication of wear inside the pump. Never allow the pump to 

remain in operation under these conditions. Immediately stop the drive. It is essential that the pump 

be repaired or replaced. 

Unfavorable installation conditions 

Significant oscillation and vibration will not occur during normal operation. Depending on the 

installation conditions, oscillation and vibration may be brought under control with the following 

measures: 

• Place vibration-absorbing spacers under the motor. 

• Secure the connection lines using vibration-dampening elements. 

Table 5 Table of disturbances 


Spare parts 

10. Spare parts 

10.1. List of spare parts 

Pumps 

4030-280-ZK..., 4030-450-ZK..., 4030-710-ZK... 

4030-280-B-ZK..., 4030-450-B-ZK..., 4030-710-B-ZK... 

Item Qty. Designation 

4030-280-ZK... 

4030-280-B-ZK... 

Pump 





1 1 Casing 4030-001.10 4030-001.20 4030-001.30 

2 1 

Cover 

Cover –B * 

4030-002.00 






3 1 Drive shaft 4030-005.10 4030-005.20 4030-005.30 

4 1 Running shaft 4030-006.10 4030-006.20 4030-006.30 

5 2 Gear 4030-007.10 4030-007.20 4030-007.30 

6 5 Plain bearings 4030-010.00 4030-010.00 4030-010.00 

12 1 

Intermediate flange 

Da140 

Intermediate flange 

Da160 

4030-122.01 4030-122.01 NI 

NI 4030-122.02 4030-122.02 

14 1 Magnetic coupling hub 4030-124.00K 4030-124.00K 4030-124.30K 

15 1 

16 1 

Magnetic coupling 

bell 

Containment 

can/centering ring 

4030-125.00K 4030-125.00K 4030-125.30K 

4030-016.00K 4030-016.00K 4030-016.30K 

18 6 Cylindrical pin ID: 701292 ID: 701292 ID: 701292 

19 1 Screw plug ID: 702635 ID: 702635 ID: 702635 

20 5 Machine screw ID: 702650 ID: 702650 ID: 702650 




24 1 Threaded pin ID: 702553 ID: 702553 ID: 702553 

25 1 Threaded pin ID: 702792 ID: 702792 ID: 702792 

26 1 Seal ring ID: 704504 ID: 704504 ID: 704504 

27 1 O-ring ID: 718155 ID: 718155 ID: 718155 

28 2 O-ring ID: 718660 ID: 718660 ID: 718660 

29 1 Seal ring * 8200-078.01 8200-078.01 8200-078.01 

30 1 Valve piston * 4030-103.00 4030-103.00 4030-103.00 

31 1 Adjustment screw * 4030-095.00 4030-095.00 4030-095.00 

32 1 Locking nut * 4030-096.00 4030-096.00 4030-096.00 

33 1 Seal ring * 4030-078.00 4030-078.00 4030-078.00 

34 1 

NI: not included 

Pressure spring * 

0.5 - 6.0 bar 

Pressure spring * 

5.0 - 12.0 bar 

* only on 4030-280-B, 4030-450-B, and 4030-710-B 

Table 6 List of spare parts 

ID: 713118 ID: 713118 ID: 713118 

ID: 713110 ID: 713110 ID: 713110 

Version: 1.4 Date: 22.10.2012 31

Spare parts 

10.2. Exploded drawing 

Table 7 Exploded drawing 


Safety Declaration 

11. Safety Declaration 

The following pump and accessories sent for inspection or repair in conjunction with this Safety 

Declaration: 

Type Pump number Delivery date 

Reason for the repair order 

Reason (continued) 

O 

O 

was not used with hazardous liquids 

came into contact with hazardous liquids or liquids that require labeling 

indicate most recent pumped liquid 

The pump has been carefully emptied and cleaned inside and out before being shipped/provided. 

Cleaning was performed in accordance with the relevant operating instructions. 

O 

O 

Special safety precautions are not necessary when handling the pump. 

The following safety precautions are necessary for the flushing liquids 

and disposal: 

We provide our assurance that the information provided above is correct and complete and that 

shipment has been performed in accordance with legal stipulations. 

Company 

Name 

Street 

Position 

City 

Telephone 

Country 

Fax 

Date 

Company stamp/signature 

For safety reasons, pumps delivered without a completed Safety Declaration can be neither 

inspected nor repaired. 

Version: 1.4 Date: 22.10.2012 33

Declaration of conformity according to directive 94/9/EC (ATEX95) 

12. Declaration of conformity according to directive 94/9/EC (ATEX95) 

For the purposes of EC directive 94/9/EC of March 23, 1994, and legal stipulations enacted for 

implementation of this directive, the manufacturer 

Pumpenfabrik Ernst Scherzinger GmbH & Co. KG 

Bregstrasse 23-25 

D – 78120 Furtwangen / Germany 

declares that the following explosion-protected product described in the operating and safety 

instructions: 

Type: 

Gear pump 

Series: 







is a device in terms of Article 1, (3) a) of directive 94/9/EC, and fulfills the basic safety and health 

requirements in accordance with Annex II of directive 94/9/EC and the subsequent harmonized 

directives: 

DIN EN 13463-1 

E DIN EN 13463-5 

DIN EN 1127-1 

The specified pump type complies with ignition protection class design safety "c." An ignition 

hazard evaluation is available. The pump bears the mark: 

II 2GD c X 

In accordance with Article 8, (1) b) ii) of directive 94/9/EC in conjunction with Annex VIII, the 

technical documentation is kept at the location specified by the European Commission. 

Furtwangen, September 18, 2009 

(Dipl.-Ing. Erich Willimsky) 

Managing Director 


Declaration of conformity according to directive 2006/42/EC (machinery directive) 

13. Declaration of conformity according to directive 2006/42/EC (machinery 

directive) 

For the purposes of EC directive 2006/42/EC, Annex II A of May 17, 2006, the manufacturer 




declares that the product 

Type: 

Gear pump 

Series: 







is delivered with an electric drive machine and thereby complies with the stipulations of directive 

2006/42/EC, Annex I, No. 1. 

Applied directives: 

2006/42/EC 

2006/95/EC 

2004/108/EC 

Machinery directive 

Low voltage directive 

Electromagnetic compatibility (EMC directive) 

Applied harmonized standards: 

EN ISO 12100 T1 EN ISO 13857 EN 809 

EN ISO 12100 T2 EN ISO 13732-1 EN 60204 T1 

Applied national technical standards and specifications: 

UVV 

Documentation manager: 

Erich Willimsky 




Furtwangen, 10.11.2009 

(Dipl.-Ing. Erich Willimsky) 

Managing Director 

Version: 1.4 Date: 22.10.2012 35

Table of Figures 

14. Table of Figures 

Figure 1 Dimensions with motor ......................................................................................................... 5 

Figure 2 Nameplate of pump .............................................................................................................. 5 

Figure 3 Viscosity range...................................................................................................................... 6 

Figure 4 Differential pressure range for pumps 4030-280 and 4030-280-B ....................................... 7 

Figure 5 Differential pressure range for pumps 4030-450 and 4030-450-B ....................................... 7 

Figure 6 Differential pressure for pumps 4030-710 and 4030-710-B ................................................. 7 

Figure 7 How a gear pump works ..................................................................................................... 13 

Figure 8 Magnetic coupling ............................................................................................................... 14 

Figure 9 Assembling the magnetic coupling ..................................................................................... 16 

Figure 10 Piping installation .............................................................................................................. 19 

Figure 11 Adjusting the pressure relief valve .................................................................................... 21 

Figure 12 Elevated temperature profile ............................................................................................. 22 

Figure 13 Elevated surface temperature profile when pump is blocked ........................................... 23 

Figure 14 Removal from drive ........................................................................................................... 24 

Figure 15 Pump body ........................................................................................................................ 25 

Figure 16 Pressure relief valve ......................................................................................................... 26 

Figure 17 Shaft bearing..................................................................................................................... 27 

15. Listing of Tables 

Table 1Pump data ............................................................................................................................. 13 

Table 2 Recommended flow speeds ................................................................................................. 18 

Table 3 Shut-off temperatures .......................................................................................................... 22 

Table 4 Overview of disturbances ..................................................................................................... 28 

Table 5 Table of disturbances ........................................................................................................... 30 

Table 6 List of spare parts ................................................................................................................ 31 

Table 7 Exploded drawing ................................................................................................................ 32 


Version: 1.4 Date: 22.10.2012 37

Address 

Scherzinger Pump Technology 

Pumpenfabrik Ernst Scherzinger GmbH & Co.KG 

Bregstrasse 23 – 25 

78120 Furtwangen / Germany 

Mailing address 

Scherzinger Pump Technology 

Pumpenfabrik Ernst Scherzinger GmbH & Co.KG 

Postfach 11 54 

78113 Furtwangen / Germany 

Communication 

Telephone + 49 / (0) 7723 / 6506 – 0 

Fax +49 / (0) 77 23 / 65 06 – 40 

E-mail: info@scherzinger.de 

Internet: www.scherzinger.de

Originalbetriebsanleitung EN 4030-M Stand22.10.12 - Scherzinger

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