KNF N 952 Manuel utilisateur

N952KNDC-B

TRANSLATION OF ORIGINAL

OPERATING AND INSTALLATION

INSTRUCTION

ENGLISH

KNF 339865-336436 09/23

OEM

Notice!

Before operating the pump and accessories, read and observe the operat-

ing and installation instructions as well as the safety information!

DIAPHRAGM PUMP

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Table of contents

1 About this document ............................................................................. 4

1.1 Using the operating and installation instructions........................... 4

1.2 Exclusion of liability....................................................................... 4

1.3 Symbols and markings.................................................................. 5

2 Safety .................................................................................................... 7

2.1 Personnel and target group .......................................................... 7

2.2 Responsibility of the operator ....................................................... 8

2.3 Working in a safety conscious manner ......................................... 8

2.4 Operating conditions ..................................................................... 9

2.5 Media ............................................................................................ 9

2.6 Use.............................................................................................. 10

2.7 Directives and standards ............................................................ 11

2.8 Customer service and repair....................................................... 12

2.9 Disposal ...................................................................................... 12

3 Technical data..................................................................................... 13

3.1 Technical data............................................................................. 13

4 Product description ............................................................................. 16

5 Transport............................................................................................. 18

General ....................................................................................... 18

6 Installation and connection.................................................................. 20

6.1 Installing the pump...................................................................... 20

6.2 Electrical connection ................................................................... 22

6.3 Pneumatic connection................................................................. 27

7 Operation ............................................................................................ 29

7.1 General ....................................................................................... 29

7.2 Information on switching the pump on and off ............................ 32

7.3 Speed specification [.29 version] ................................................ 33

7.4 Extended parameterization and functions of the pump [.29 version]

.................................................................................................... 38

8 Servicing ............................................................................................. 41

8.1 Servicing schedule...................................................................... 41

8.2 Cleaning...................................................................................... 42

8.3 Replacing the diaphragm and valve plates ................................. 43

9 Spare parts and accessories............................................................... 52

9.1 Spare parts ................................................................................. 52

9.2 Accessories................................................................................. 52

9.3 Motor accessories....................................................................... 53

10 Troubleshooting .................................................................................. 54

11 Returns................................................................................................ 58

About this document Diaphragm pump N952KNDC-B

4Translation of Original Operating and Installation Instruction, KNF

339865-336436 09/23

1 About this document

1.1 Using the operating and installation

instructions

The operating and installation instructions are part of the

pump.

àIn the event of uncertainties with regard to the content of

the operating and installation instructions, please contact

the manufacturer (contact data: see www.knf.com).

Please have the type and serial number of the pump

ready.

àRead the operating and installation instructions before you

commission the pump.

àGive the operating and installation instructions only com-

pletely and unchanged to the next owner.

àKeep the operating and installation instructions within

reach at all times.

Project pumps For customer-specific project pumps (pump models that begin

with "PJ" or "PM"), there may be deviations from these oper-

ating and installation instructions.

àFor project pumps, also observe the agreed specifica-

tions.

Optional con-

tents

Project-specific options may be included in the operating and

assembly instructions. These are marked with "Optional". It is

also possible that project-specific deviations are not included

in the operating and assembly instructions.

1.2 Exclusion of liability

The manufacturer assumes no liability for damages and mal-

functions resulting from failure to observe the operating and

installation instructions.

The manufacturer assumes no liability for damages and mal-

functions resulting from changes or modifications to the de-

vice and improper handling.

The manufacturer assumes no liability for damages and mal-

functions resulting from impermissible spare parts and acces-

sories.

Diaphragm pump N952KNDC-B About this document

Translation of Original Operating and Installation Instruction, KNF 339865-336436

09/23

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1.3 Symbols and markings

Warning notice

WARNING

A notice that warns you of danger is lo-

cated here.

Possible consequences of a failure to

observe the warning notice are speci-

fied here. The signal word, e.g., Warn-

ing, indicates the danger level.

àMeasures for avoiding the danger

and its consequences are speci-

fied here.

Danger levels

Signal word Meaning Consequences if

not observed

DANGER warns of immediate

danger

Death or serious in-

jury or serious

damage will result.

WARNING warns of possible

danger

Death, serious in-

jury or serious

damage is possi-

ble.

CAUTION warns of a possibly

dangerous situation

Minor injury or

damage is possi-

ble.

NOTICE Warns of possible

damage

Damage is possi-

ble.

Tab.1: Danger levels

Other notices and symbols

àAn activity to be carried out is specified here (a step).

1. The first step of an activity to be carried out is specified

here.

Other sequentially numbered steps follow.

This symbol indicates important information.

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About this document Diaphragm pump N952KNDC-B

6Translation of Original Operating and Installation Instruction, KNF

339865-336436 09/23

Explanation of pictograms

Pictogram Meaning

General warning symbol

Warning of hot surface

Warning of electrical voltage

Warning of poisonous substances

Warning of hand injuries through crushing

Observe the operating instructions

General mandatory sign

Tab.2: Explanation of pictograms

Diaphragm pump N952KNDC-B Safety

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2 Safety

Observe the safety notices in Chapters 6 Installation and

connection [}20] and 7 Operation [}29].

2.1 Personnel and target group

Personnel Make sure that only specially trained and instructed personnel

work on the pumps. This applies, in particular, to mounting,

connection and servicing work.

Make sure that the personnel have read and understood the

operating instructions, particularly the chapter on safety.

Target group Target group Definition

User Employee

Specialized personnel Specialized personnel are

personnel who

- have relevant professional

training in the field covered in

the particular section of text;

- have current knowledge of

the field covered in the partic-

ular section of text.

Tab.3: Target group

Who-does-what

matrix

Lifecycle phase User Specialized per-

sonnel

Transport X

Mounting X

Connection X

Commissioning X X

Operation X X

Servicing X

Troubleshooting X

Disposal X

Tab.4: Who-does-what matrix

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Safety Diaphragm pump N952KNDC-B

8Translation of Original Operating and Installation Instruction, KNF

339865-336436 09/23

2.2 Responsibility of the operator

The pumps are produced in accordance with the generally

recognized rules of engineering, as well as the occupational

health, safety and accident prevention regulations. Neverthe-

less, dangers can arise during their use that lead to injuries to

the user or third parties or to damage to the pump or other

property.

Only use the pumps in perfect technical condition, for their in-

tended use, safely and with an awareness of the dangers and

in observation of the operating and installation instructions.

The components that are to be connected to the pumps must

be designed according to the pneumatic data of the pumps.

When connecting the pumps to the electrical power, observe

the corresponding safety rules.

Make sure that no hazardous situation, physical harm or im-

pairment of the pump can occur.

Operating

parameters

Only operate and install the pump under the operating param-

eters and operating conditions described in Chapters 2.4 Op-

erating conditions [}9] and 3 Technical data [}13].

2.3 Working in a safety conscious manner

Observe the regulations on accident prevention and safety

during all work on the pumps and during operation.

Avoid contact with the pump heads and housing parts be-

cause the pump heats up during operation.

When working on the pump, make sure that the pump is dis-

connected from mains and without power.

When connecting the pump to the electrical mains, observe

the corresponding safety rules.

Ensure that no hazards arise from gas flowing when gas con-

nections are open, from the effects of noise or from hot, corro-

sive, dangerous and environmentally hazardous gases.

Make sure that an EMC-compliant installation of the pump is

ensured at all times to prevent the occurrence of dangerous

situations.

Diaphragm pump N952KNDC-B Safety

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2.4 Operating conditions

Only use the pump in perfect technical condition, for its in-

tended purpose, safely and with an awareness of the dangers

and in observation of the operating instructions.

Only install and operate the pumps in accordance with the op-

erating parameters and conditions described in Chapter 3

Technical data [}13].

Only pumps that are fully assembled and in the condition as

delivered may be operated.

Make sure that the installation location is dry and that the

pump is protected from rain, splash water, gushing water,

dripping water and other contamination.

Check the tightness of the connections between the pipes of

the application and the pump (or the connection of the pump)

at regular intervals. Leaky connections carry the risk of re-

leasing dangerous gases and vapors from the pump system.

2.5 Media

Requirements of

pumped media

Before transferring a medium, check whether the medium can

be transferred without risk in the specific application.

Take note of any change in the state of matter (condensation,

crystallization).

Before using a medium, check the compatibility of the media-

contacting components (see 3 Technical data [}13]) with the

medium.

Risk of dangerous gas mixtures during pump operation if di-

aphragm breaks: Depending on the medium being trans-

ferred, breakage of the diaphragm can result in a dangerous

mixture if the medium mixes with the air in the compressor

housing or the surroundings.

Only transfer gases that remain stable under the pressures

and temperatures that arise in the pump.

Handling of

hazardous

media

Upon breakage of the diaphragm and/or leaks, the transferred

medium mixes with the air in the surroundings and/or in the

pump housing.

Make sure that a dangerous situation cannot arise as a result.

When pumping hazardous media, observe the safety regula-

tions for the handling of said media.

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Safety Diaphragm pump N952KNDC-B

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Handling of com-

bustible media

Note that the pump is not designed to be explosion-proof.

Make certain that the temperature of the medium is always

sufficiently below the ignition temperature of the medium so

as to prevent ignition or explosion. This also applies for ab-

normal operating situations.

Note that the temperature of the medium increases when the

pump compresses the medium.

Therefore, make certain that the temperature of the medium

also remains sufficiently below the ignition temperature of the

medium even when it is compressed to the maximum permis-

sible operating pressure of the pump. The maximum permissi-

ble operating pressure of the pump is stated in Chapter 3

Technical data [}13].

Make certain that the permissible ambient temperature (see 3

Technical data [}13]) is not exceeded.

Where applicable, also take into account external energy

sources (such as radiated heat sources) that could addition-

ally heat the medium.

In case of doubt, contact KNF Customer Service.

2.6 Use

2.6.1 Proper use

The pumps are intended exclusively for transferring gases

and vapors.

The pumps are intended exclusively for operation in indoor ar-

eas and in non-explosive atmospheres.

2.6.2 Foreseeable misuse

The pumps must not be operated in explosive atmospheres.

The pumps are not suitable for transferring the following:

§Dusts

§Liquids

§Aerosols

§Biological and microbiological substances

Diaphragm pump N952KNDC-B Safety

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§Fuels

§Explosives and flammable materials

§Fibers

§Oxidizing agents

§Foodstuffs.

As standard, the pumps must not be used for simultaneous

generation of a vacuum and positive pressure.

This function can be made possible on a project basis follow-

ing consultation with KNF Customer Service.

Do not apply positive pressure to the inlet of the pump.

This function can be made possible on a project basis follow-

ing consultation with KNF Customer Service.

2.7 Directives and standards

EU/EC

Directives

Installation declaration – for partly completed machinery

With respect to the Machinery Directive 2006/42/EC, the

pumps are partly completed machinery and are, therefore, to

be regarded as not ready for use. Partly completed machinery

may not be commissioned until it has been determined that

the machine into which the partly completed machinery is to

be installed complies with the provisions of the Machinery Di-

rective 2006/42/EC. The following fundamental requirements

of Annex I of Directive 2006/42/EC (general principles) are

applied and observed:

§General principles no. 1

§No. 1.1.2. / 1.1.3. / 1.3.1. / 1.3.3. / 1.3.4. / 1.4.1. / 1.5.8. /

1.5.9. / 1.7.4. / 1.7.4.1. / 1.7.4.3.

Standards The following standards apply:

§EN IEC 61000-6-2

§EN IEC 61000-6-3

§EN IEC 63000

The protective goals of the following directive(s) are achieved:

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Safety Diaphragm pump N952KNDC-B

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339865-336436 09/23

§Directive 2011/65/EU on the restriction of the use of cer-

tain hazardous substances in electrical and electronic

equipment (Annex II changed by delegated Directive (EU)

2015/863 of the Commission)

2.8 Customer service and repair

Customer ser-

vice and repairs

The pump is maintenance-free. However, KNF recommends

periodic inspection of the pump for obvious changes in noise

or vibration.

Only have repairs to the pumps performed by qualified KNF

personnel.

Housings with electrically live components may only be

opened by specialist personnel.

Use only genuine spare parts from KNF when performing

servicing work.

2.9 Disposal

Environmental

protection

Store the pump and all accessories in accordance with the

environmental provisions. Observe national and international

regulations. This applies in particular to parts that are contam-

inated with toxic substances.

If you no longer need your packaging materials (e.g. for return

shipment or other transport of the device), dispose of them in

an environmentally friendly manner.

Old devices must not be disposed of with household waste.

Proper disposal and recycling helps to protect natural re-

sources and the environment. The end user is responsible for

disposing of old devices according to national and interna-

tional regulations. Alternatively, KNF products (old devices)

may also be returned to KNF for a fee (see chapter 11 Re-

turns [}58]).

Diaphragm pump N952KNDC-B Technical data

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3 Technical data

3.1 Technical data

Pump materials

Assembly Material

Pump head PPS

Diaphragm EPDM

Valve plate FPM

O-ring FPM

Pneumatic connection

-Male connection

-Hose

-O-ring

Nickel-plated brass

PFAN

FPM

Tab.5:

Pneumatic parameters

Parameter Value

Max. permissible operating

pressure [bar rel]

0,1

Ultimate vacuum [mbar abs.] ≤ 1.5

Flow rate at atm. pressure [l/

min]*

36

Tab.6: *Liters in the standard state (based on ISO 8778 and ISO

21360-1/2) (1013 mbar)

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Technical data Diaphragm pump N952KNDC-B

14 Translation of Original Operating and Installation Instruction, KNF

339865-336436 09/23

Electrical performance

Parameter Value

Motor type Brushless DC motor

Voltage [V] 24

Max. permissible supply volt-

age fluctuations

± 10%

Power P1 [W] 100

Max. rated current draw [A] 4,2

Motor protection class (DIN

EN 60529 / IEC 60529)

IP20

Overvoltage category I

Tab.7: Electrical performance

Other motor values

Designation Value

Minimum signal voltage -0.3V

Maximum signal voltage 5.2V

Maximum output current per signal 5mA

Input impedance 5kΩ

High logic level 2.9…5V

Low logic level 0…0.4V

Max. cable length ≤ 3m

Tab.8: Maximum electrical values

Pneumatic connections

Pneumatic connections Value

Inlet Thread size G1/8*

Outlet Thread size G1/8*

Tab.9: *Acc. to ISO 228

Diaphragm pump N952KNDC-B Technical data

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Other parameters

Parameter Value

Permissible ambient tempera-

ture [°C]

+ 5 to + 40

Permissible media tempera-

ture [°C]

+ 5 to + 40

Operating temperature of

drive controller

(this can be read out via

UART)

0…90°C

(depending on the boundary

conditions, the limit tempera-

ture can be parameterized to

100°C)

Relative air humidity 80% for temperatures to 31

°C, decreasing linearly to

50% at 40 °C (non-condens-

ing).

Maximum installation altitude

[m above sea level]

2000

Dimensions See Fig. 3, Chapter 6.1 In-

stalling the pump [}20]

Degree of contamination 2

Tab.10:

Weight

Parameter Value

Weight [kg] 4,8

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Product description Diaphragm pump N952KNDC-B

16 Translation of Original Operating and Installation Instruction, KNF

339865-336436 09/23

4 Product description

Design

1Outlet

2Motor

3Inlet

3

2

1

Fig.1: Diaphragm pump N952KNDC-B

Diaphragm pump N952KNDC-B Product description

Translation of Original Operating and Installation Instruction, KNF 339865-336436

09/23

17

Function of a diaphragm pump

1Outlet valve

2Inlet valve

3Transfer

chamber

4Diaphragm

5Eccentric

6Connecting

rod

21

4

3

6

5

Fig.2: Function of a diaphragm pump

Diaphragm pumps transfer, compress (depending on the ver-

sion) and evacuate gases and vapors.

The elastic diaphragm (4) is moved up and down by the ec-

centric (5) and the connecting rod (6). In the downwards

stroke, it aspirates the gas to be transferred via the inlet valve

(2). In the upwards stroke, the diaphragm presses the medium

out of the pump head via the outlet valve (1). The transfer

chamber (3) is separated from the pump drive by the di-

aphragm.

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Transport Diaphragm pump N952KNDC-B

18 Translation of Original Operating and Installation Instruction, KNF

339865-336436 09/23

5 Transport

General

CAUTION

Personal injury and/or property dam-

age due to incorrect or improper trans-

port of the pump

In the event of incorrect or improper

transport, the pump can fall down, be

damaged or injure persons.

àUse suitable auxiliary means if nec-

essary (carrying strap, lifting gear,

etc.).

àWhere appropriate, wear suitable

personal protective equipment

(e.g., safety shoes, safety gloves).

CAUTION

Risk of injury from sharp edges on the

packaging

There is a risk of injury from cutting on

the sharp edges when grabbing cor-

ners or when opening the packaging.

àWhere appropriate, wear suitable

personal protective equipment

(e.g., safety shoes, safety

gloves).

Diaphragm pump N952KNDC-B Transport

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CAUTION

Personal injury and/or property dam-

age due to incorrect or improper trans-

port of the pump

If the pump is raised and/or carried on

the connection during transport, leaks

and/or damages to the pump may re-

sult.

àDo not carry the pump on the

pneumatic connection.

àTransport the pump in the original packaging to the instal-

lation location.

àKeep the original packaging of the pump (e.g. for later

storage).

àInspect the pump for transport damage after receiving it.

àDocument any transport damage that has occurred.

àRemove any transport safeguards on the pump prior to

commissioning.

Parameter

Parameter Value

Storage temperature [°C] + 5 to + 40

Transport temperature [°C] - 10 to + 60

Permissible humidity (non-

condensing) [%]

30 to 85

Tab.11: Transport parameters and storage parameters

NOTICE

Prior to commissioning, make sure that

the pump has reached the ambient

temperature (3 Technical data [}13]).

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Installation and connection Diaphragm pump N952KNDC-B

20 Translation of Original Operating and Installation Instruction, KNF

339865-336436 09/23

6 Installation and connection

Only install the pumps in accordance with the operating pa-

rameters and conditions described in Chapter 3 Technical

data [}13].

àObserve the safety instructions (see Chapter 2 Safety

[}7]).

DANGER

Risk of dangerous gas mixtures during

pump operation

Depending on the medium being trans-

ferred, breakage of the media-contact-

ing components can result in a danger-

ous mixture if the medium mixes with

the air in the compressor housing or

the surroundings.

àBefore using a medium, check the

compatibility of the media-con-

tacting components (see 3 Tech-

nical data [}13]) with the

medium.

6.1 Installing the pump

àStore the pump at the installation site to allow it to adapt

to the ambient temperature before installation (condensa-

tion must not be allowed to form).

Mounting dimen-

sions

àFor mounting dimensions, see the following illustrations:

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KNF N 952 Manuel utilisateur

KNF N 952 Manuel utilisateur

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