KNF N87 EX Bedienungsanleitung

N87.9 EX

TRANSLATION OF ORIGINAL OPERATION AND

INSTALLATION INSTRUCTION

ENGLISH

KNF 323252 04/21 EN-US

ATEX

Notice!

Before operating the pump and the accessories, read the operating and installation instructions and observe

the safety notices!

DIAPHRAGM PUMP

Index

1 About this document ......................................................... 3

2 Use ................................................................................... 6

3 Safety.............................................................................. 12

4 Technical data ................................................................ 14

5 Design and function ........................................................ 15

6 Transport ........................................................................ 17

7 Installation and connection ............................................. 18

8 Operation ........................................................................ 22

9 Servicing ......................................................................... 25

10 Troubleshooting .............................................................. 34

11 Spare parts and accessories .......................................... 37

12 Returns ........................................................................... 38

13 Appendix......................................................................... 39

KNF Neuberger GmbH

Alter Weg 3

79112 Freiburg

Germany

Tel. +49 (0)7664/5909-0

Fax. +49 (0)7664/5909-99

www.knf.com

Diaphragm pump N87.9 EX About this document

Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21 3

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 completely and un-

changed 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 the operating and installation instruc-

tions.

àFor project pumps, also observe the agreed specifications.

Motor The operating and installation instructions apply for the pump part.

àAlso observe the operating instructions for the motor in the appendix.

1.2 Exclusion of liability

The manufacturer assumes no liability for damages and malfunctions re-

sulting from failure to observe the operating and installation instructions.

The manufacturer assumes no liability for damages and malfunctions re-

sulting from changes or modifications to the device and improper handling.

The manufacturer assumes no liability for damages and malfunctions re-

sulting from impermissible spare parts and accessories.

About this document Diaphragm pump N87.9 EX

4 Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21

1.3 Symbols and markings

Warning notice

WARNING

A notice that warns you of danger is located here.

Possible consequences of a failure to observe the

warning notice are specified here. The signal

word, e.g., warning, indicates the danger level.

àMeasures for avoiding the danger and its

consequences are specified here.

Danger levels

Signal word Meaning Consequences if not

observed

DANGER warns of immediate

danger

Death or serious injury

or serious damage will

result.

WARNING warns of possible dan-

ger

Death, serious injury or

serious damage is pos-

sible.

CAUTION warns of a possibly

dangerous situation

Minor injury or damage

is possible.

NOTICE Warns of possible dam-

age

Damage is possible.

Tab.1 Danger levels

Other notices and symbols

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

Diaphragm pump N87.9 EX About this document

Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21 5

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

Follow other sequentially numbered steps.

This symbol indicates important information.

Explanations of pictograms

Pictogram Meaning

General warning symbol

Warning of hot surface

Warning of electrical voltage

Warning of explosive materials

Warning of poisonous substances

Warning of hand injuries through crushing

Observe the operating instructions

General mandatory sign

Environmentally conscious disposal

Tab.2 Explanations of pictograms

Use Diaphragm pump N87.9 EX

6 Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21

2 Use

2.1 Proper use

The pumps are intended exclusively for transferring gases and vapors.

Responsibility of the owner

Operating parameters and

conditions

Only install and operate the pumps in accordance with the operating pa-

rameters and conditions described in Chapter 4 Technical dataand Chap-

ter 2.3 Use in potentially explosive areas.

Pumps with ATEX designation do not always satisfy the regulations

for potentially explosive areas in countries outside of the EU.

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 pro-

tected against rain, splash, gushing, and drip water as well as from other

contaminants.

The pump is suitable for transferring potentially explosive atmospheres

and for operation in potentially explosive atmospheres.

Check the tightness of the connections between the pipes of the applica-

tion and the pump (or the connection of the pump) at regular intervals.

Leaky connections carry the risk of releasing dangerous gases and vapors

from the pump system.

Requirements on the transferred

medium

Before transferring a medium, check whether the medium can be trans-

ferred danger-free in the specific application.

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

components (see 4 Technical data) with the medium.

Risk of dangerous gas mixtures during pump operation if diaphragm

breaks: Depending on the medium being transferred, breakage of the di-

aphragm can result in a dangerous mixture if the medium mixes with the

air in the compressor housing or the surroundings.

Make certain that no risk of explosion arises even in extreme operating sit-

uations (temperature, pressure) and in the event of system breakdowns.

Only transfer gases that remain stable under the pressures and tempera-

tures that arise in the pump.

2.2 Improper use

The pumps are not suitable for use below ground.

The pumps are not suitable for transferring:

§Dusts

§Liquids

§Aerosols

§Biological and microbiological substances

§Explosives

§Fibers

§Food

Pumps that can produce both vacuum as well as overpressure may not be

used to simultaneously produce vacuum and overpressure.

This function can be made possible on a project basis following consulta-

tion with KNF Customer Service.

No overpressure may be applied to the suction side of the pump.

Diaphragm pump N87.9 EX Use

Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21 7

This function can be made possible on a project basis following consulta-

tion with KNF Customer Service.

2.3 Use in potentially explosive areas

In potentially explosive atmospheres (zones), only operate pumps and mo-

tors of the appropriate category and temperature class.

The pumps have the following EU explosion protection designation:

Designation Description

Symbol for explosion-proof pumps

II Equipment group (See Chapter 2.4.1 Device groups)

2/2G Device category (See Chapter 2.4.2 Device categories for

gas)

Ex Symbol indicates that the device complies with one or

more ignition protection types

H Symbol for ignition protection type (See Chapter 2.4.5 Ig-

nition protection type)

II B + H2 Explosion groups (see Chapter 2.4.3 Explosion groups)

T4 Temperature class (see Chapter 2.4.4 Temperature

classes)

Gb Equipment protection level (See Chapter 2.4.6 Equipment

protection level for gas)

Special operating conditions (See Chapter 2.4.7 Special

operating conditions)

Tab.3

An ignition hazard assessment in accordance with standards DIN EN ISO

80079-36 and DIN EN ISO 80079-37 was performed for the pumps. The

protective goals were reached by applying ignition protection type con-

structional safety "c".

The explosion protection designation can also be found at the following lo-

cation:

§Type plate of the pump

Motor The pump motor must have at least the same explosion protection as the

pump.

2.4 Explanations of the explosion protection designation

2.4.1 Device groups

Device group I Device group I applies for devices that are used in underground plants of

mines as well as their underground systems that could be endangered by

methane and/or combustible dusts.

Device group II Device group II applies for devices that are used in other areas that could

be endangered by an explosive atmosphere.

Use Diaphragm pump N87.9 EX

8 Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21

2.4.2 Device categories for gas

The device category describes the frequency and the duration of the oc-

currence of explosive atmospheres during operation.

Device cat-

egory

Description

1G Devices of this category are designed for use in areas in

which an explosive atmosphere consisting of a mixture of air

and gases, vapors or mists is present constantly or for long

periods of time or often.

1D Devices of this category are designed for use in areas in

which an explosive atmosphere consisting of a dust/air mix-

ture is present constantly or for long periods of time or often.

2G Devices of this category are designed for use in areas in

which it is to be expected that an explosive atmosphere con-

sisting of gases, vapors or mists forms occasionally.

2/2G Devices that extract from zone 1 and are designed for use in

areas in which it is to be expected that an explosive atmos-

phere consisting of gases, vapors or mists forms occasion-

ally.

2/-G Devices that extract from zone 1 but are not designed for in-

stallation in a potentially explosive atmosphere (zone).

2D Devices of this category are designed for use in areas in

which it is to be expected that an explosive atmosphere con-

sisting of a dust/air mixture forms occasionally.

3G Devices of this category are designed for uses in areas in

which it is to be expected that an explosive atmosphere re-

sulting from gases, vapors or mists occurs, though in all like-

lihood occurs only seldom and for a very short length of time.

3D Devices of this category are designed for uses in areas in

which it is to be expected that an explosive atmosphere re-

sulting from stirred-up dust occurs, though in all likelihood

occurs only seldom and for a very short length of time.

Tab.4

Diaphragm pump N87.9 EX Use

Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21 9

2.4.3 Explosion groups

Combustible gases and vapors are classified according to explosion

groups(I, IIA, IIB and IIC) and temperature classes. The following table

shows the classification of the most common combustible gases and va-

pors.

T1 T2 T3 T4 T5 T6

I Methane – – – – –

IIA Acetone

Ethane

Ethyl ac-

etate

Ammonia

Ethyl chlo-

ride

Benzene

Acetic acid

Carbon

monoxide

Methane

Methanol

Methyl chlo-

ride

Naphthalene

Phenol

Propane

Toluene

i-amyl ac-

etate

n-butane

n-butyl alco-

hol

Cyclohex-

anone

1,2-

dichloroetha

Acetic anhy-

dride

Gasoline

Diesel fuel

Jet fuel

Heating oils

n-hexane

Acetalde-

hyde

– –

IIB Town gas Ethylene

Ethyl alcohol

Hydrogen

sulfide

Ethyl ether – –

IIC Hydrogen Acetylene – – – Carbon

disulfide

Tab.5

The classification of gases and vapors into groups with respect to explo-

sion group and temperature class applies for the transferred medium as

well as for the pump surroundings.

Transferred medium The pump may only be used to transfer gases and vapors that belong to

the respective explosion group and corresponding temperature class (or

below) (see designation on the type plate) or that are not explosive and

combustible.

Environment of the pump The pump may only be operated in an environment that contains an at-

mosphere that belongs to the respective explosion group and correspond-

ing temperature class (or below) (see designation on the type plate) or that

is not explosive and not combustible.

Use Diaphragm pump N87.9 EX

10 Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21

2.4.4 Temperature classes

Maximum surface temperature The maximum surface temperature is the highest temperature that is

reached under the most unfavorable conditions of a surface of the pump.

Ignition temperature The maximum surface temperature of the pump must always be lower

than the lowest ignition temperature of the gas or vapor/air mixture in

which it is used.

Temperature class The maximum surface temperature arises from the design of the pump

and is specified as temperature class.

Temperature

class

Max. surface temperature

[°C]

Ignition temperature

[°C]

T1 450 > 450

T2 300 > 300

T3 200 > 200

T4 135 > 135

T5 100 > 100

T6 85 > 85

Tab.6

2.4.5 Ignition protection type

Designation Description

h Constructional safety "c"

h Ignition source monitoring "b"

h Liquid immersion "k"

Tab.7

An ignition hazard assessment in accordance with standards DIN EN ISO

80079-36 and DIN EN ISO 80079-37 was performed for the pumps. The

protective goals were reached by applying ignition protection type con-

structional safety "c".

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