KNF NF 300 Manuale utente

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions Keep for future reference!

DIAPHRAGM LIQUID PUMP

NF 300, NF 1.300

Operating and

Installation

Instructions

Read and observe these oper-

ating and installation instruc-

tions!

An additional letter prefixing the

NF model code is a country-

specific designation and has no

technical relevance

Contents Page

1. About this document................................................................. 2

2. Use........................................................................................... 3

3. Safety ....................................................................................... 5

4. Technical data.......................................................................... 7

5. Assembly and function........................................................... 10

6. Installation and connection..................................................... 11

7. Operation................................................................................ 17

8. Servicing................................................................................. 20

9. Troubleshooting...................................................................... 24

10. Spare parts and accessories.................................................. 26

11. Return of the pump................................................................. 27

KNF Flodos AG

Wassermatte 2

6210 Sursee, Switzerland

Tel. +41 (0)41 925 00 25

Fax +41 (0)41 925 00 35

www.knf.com

[email protected]

NF 300 KP .51 .27 DC 12V

DC / DCB

.51 / - [Ch. 2]

KP / KT / TT / FT [Ch. 4]

NF / UNF / JNF

Supply voltage [Ch. 4]

300 / 1.300

- / PMLxxxx / PLxxxx [Ch. 1]

0.27 / - [Ch. 5]

Diaphragm liquid pump NF 300 About this document

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions 2

1. About this document

1.1. Use of the operating and installation instruc-

tions

The operating and installation instructions are part of the pump.

➔Pass on the operating and installation instructions to the next

owner.

Customer-specific project pumps (pump models which begin with

"PL" or "PML") may differ from the operating and installation in-

structions.

➔In the case of project pumps, take note of any additionally

agreed specifications.

1.2. Symbols and markings

Warning

WARNING

This symbol indicates a potential danger.

It also indicates the possible consequences of failure

to observe the warning. The signal word (i.e. "Warn-

ing") indicates the level of danger.

➔This specifies measures for avoiding the danger

and the consequences of failure to implement

these measures.

Danger levels

Signal word

Meaning

Consequences if not observed

DANGER

warns of immedi-

ate danger

Death or serious injuries and/or

serious material damage are the

consequence.

WARNING

warns of possible

danger

Death or serious injuries and/or

serious material damage are

possible.

CAUTION

warns of a poten-

tially dangerous

situation

Minor injuries or material dam-

age are possible.

Tab. 1

Other information and symbols

➔This indicates an activity (step) that needs to be carried out.

This indicates the first step of an activity to be carried out. Any

additional steps required are consecutively numbered.

This symbol refers to important information.

Project pumps

Diaphragm liquid pump NF 300 Use

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions 3

2. Use

2.1. Proper use

The pumps are intended for transferring and metering liquids.

Owner's responsibility

Only install and operate the pumps under the operating parameters

and conditions described in Chapter 4, Technical data.

The pumps may be operated only when fully assembled.

Before transferring or metering a medium, check that it can be

transferred without risk in the specific application case.

Before using a medium, check the compatibility of the materials of

the pump head, pump housing, diaphragm and valves with the

medium.

The temperature of the medium must lie within the permissible

temperature range (see Chapter 4).

The media should not contain particles as these can prevent the

pump from working correctly. If this cannot be guaranteed, a filter

< 100 m with a sufficiently large filter area must be used upstream

of the pump.

The .51 versions of our diaphragm liquid pump range have been

certified by NSF according to the standard NSF/ANSI 169 and are

therefore suitable for use with foodstuffs without any restrictions.

All materials used have been checked through a series of toxico-

logical tests. In order to ensure that the food grade quality is main-

tained, NSF will carry out a yearly audit checking our certified

products.

Only the pumps marked with ".51" are NSF-certified and contain a

defined material combination that also has a FDA certificate of

conformity.

NSF: National Sanitary Foundation

FDA: Food and Drug Administration

ANSI: American National Standard Institute

* Pumps with other customer-specific certified material combinations are

available on request.

Operating parameters and

conditions

Requirements for

transferred medium

.51* version –version with food

grade approval

Diaphragm liquid pump NF 300 Use

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions 4

➔All certified diaphragm liquid pumps are clearly marked with

“.51” in the type designation along with the NSF-logo on the

type plate. If either or both of these markings are missing, the

pump is not certified.

➔Because the cleaning requirements of the diaphragm liquid

pumps depend on the application, KNF is unable to guarantee

cleaning options. The responsibility for cleaning the pump(s)

therefore lies with the user. While the NSF/ANSI 169 standard

regulates OEM products, it does not define cleaning methods

for specific OEM products.

➔All parts in contact with the medium can be replaced as spare

parts without losing the certification. Component parts cannot

be traded as certified parts. When replacing parts/assemblies

only use original KNF parts.

2.2. Improper use

The pumps may not be operated in an explosive atmosphere.

For special modifications outside the standard technical specifica-

tions, please contact a KNF pump specialist.

Diaphragm liquid pump NF 300 Safety

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions 5

3. Safety

Note the safety precautions in Chapters 6. Installation and

connection, and 7. Operation.

The pumps are built according to the generally recognized rules of

technology and in accordance with the pertinent occupational

safety and accident prevention regulations. Nevertheless, dangers

can result during their use which lead to injuries to the user or

others, or to damage to the pump or other property.

Only use the pumps in perfect working order and in accordance

with their intended use. Always ensure adherence to the operating

and installation instructions and work in a safety-conscious man-

ner.

Make sure that only trained and instructed personnel or specially

trained personnel work on the pumps. This especially applies to

assembly, connection and servicing work.

Make sure that all personnel have read and understood the operat-

ing and installation instructions, and in particular the "Safety"

chapter.

Always ensure adherence to all pertinent accident prevention and

safety regulations when working on and operating the pump.

Always observe the safety regulations when handling dangerous

media.

Always ensure adherence to all information stickers on the pumps,

such as flow direction arrows and type plates, and keep stickers in

legible condition.

All replacement parts should be properly stored and disposed of in

accordance with the applicable environmental protection regula-

tions. Ensure adherence to the pertinent national and international

regulations. This especially applies to parts contaminated with toxic

substances.

Personnel

Working in a

safety-conscious manner

Handling dangerous media

Notes

Environmental protection

Diaphragm liquid pump NF 300 Safety

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions 6

The pumps are in accordance with the requirements of the guide-

lines 2011/65/EU (ROHS2)

As defined in the Machinery Directive 2006/42/EC, pumps are

partly completed machines and not ready-for-use, the overall

equipment must be made to fully conform with the requirements of

the Directive before being brought into service. Always ensure

implementation and enforcement of the basic requirements of the

Machinery Directive 2006/42/EC according to Appendix I (General

Principles).

The following harmonised standards are met:

NF 300 DC / NF 1.300 DC

▪EN 55022

▪EN 55011

NF 300 DCB / NF 1.300 DCB

▪EN 55014 - 1

▪EN 61000 - 6 - 1

All repairs to the pump(s) must be carried out by the relevant KNF

Customer Service team.

Only use KNF original parts for all maintenance work.

EU directives/standards

Customer service and

repairs

Diaphragm liquid pump NF 300 Technical data

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions 7

4. Technical data

Pump materials

The pump type KP / KP.51 stands for:

Assembly

Material1)

Pump head *

Valve plate

EPDM

Diaphragm

PTFE-coated

Resonating diaphragm

PTFE

Diaphragm. 27

EPDM

Tab. 2 1) according to DIN ISO 1629 and 1043.1

The pump type KT stands for:

Assembly

Material1)

Pump head *

Valve plate

FFPM

Diaphragm

PTFE-coated

Resonating diaphragm

PTFE

Diaphragm. 27

FFPM / FPM

Tab. 3 1) according to DIN ISO 1629 and 1043.1

The pump type TT stands for:

Assembly

Material1)

Pump head *

PVDF

Valve plate

FFPM

Diaphragm

PTFE-coated

Resonating diaphragm

PTFE

Diaphragm. 27

FFPM / FPM

Tab. 4 1) according to DIN ISO 1629 and 1043.1

The pump type FT stands for:

Assembly

Material1)

Pump head *

PTFE

Valve plate

FFPM

Diaphragm

PTFE-coated

Resonating diaphragm

PTFE

Tab. 5 1) according to DIN ISO 1629 and 1043.1

* The pump head (Fig. 1) comprises a connecting plate and an intermedi-

ate plate

Diaphragm liquid pump NF 300 Technical data

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions 8

Hydraulic ratings

Parameter

Value

Flow rate [l/min] 1), 2)

3.0

Max. permissible pressure NF 300 [bar g]

Max. permissible pressure NF 1,300 [bar

Suction head [mWG]

Tab. 6

1) Measured with water at 20°C / at atmospheric pressure

2) Flow rates may vary from the values shown, depending on fluid viscosi-

ty, pump head material and the hoses / hose connectors used.

Hydraulic connections

Parameter

Value

NF 300 / NF 1.300

G 3/8"

UNF 300 / UNF 1.300

NPT 3/8"

Recommended hose size ID [mm]

Tab. 7

Specifications NF 300 DC

Motor voltage

12V/24V

Power consumption [W]

20 / 20

Max. current at max. load [A]

1.6 / 0.8

Max. motor current [A]

3.4 / 1.5

Protection class [-]

IP 50

Weight1) [g]

1000

Tab. 9

Specifications NF 300 DCB

Motor voltage

12V/24V

Power consumption [W]

35 / 35

Max. current at max. load [A]

2.1 / 1.19

Max. motor current [A]

2.5 / 2

Protection class [-]

IP 54

Weight1) [g]

1000

Tab. 10

Specifications NF 1.300 DC

Motor voltage

12V/24V

Power consumption [W]

34 / 34

Max. current at max. load [A]

2.8 / 1.4

Max. motor current [A]

3.4 / 1.5

Protection class [-]

IP 50

Weight1) [g]

1000

Tab. 12

Diaphragm liquid pump NF 300 Technical data

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions 9

Specifications NF 1.300 DCB

Motor voltage

12V/24V

Power consumption [W]

35 / 35

Max. current at max. load [A]

2.5 / 1.66

Max. motor current [A]

2.5 / 2

Protection class [-]

IP 54

Weight1) [g]

1000

Tab. 13

1) The weight may differ slightly from the stated value, depending on the

version.

Electrostatic sensitive components (ESD)

Various parameters

Parameter

Value

Permissible ambient temperature

range [°C]

+ 5 to + 40

Permissible media temperature [°C]

+ 5 to + 80

Permissible kinematic viscosity of the

media [cSt]

≤ 150

Tab. 14

Diaphragm liquid pump NF 300 Assembly and function

KNF Flodos BA_NF300_EN_08_068697.docx

Translated from the Original Operating and Installation Instructions 10

5. Assembly and function

Assembly

1Outlet

2Inlet

3Connecting plate

4 Motor

5 Leads

6 Head plate

7 Intermediate plate

Fig. 1: Diaphragm liquid pump NF 300

1Exhaust valve

2Inlet valve

3Working chamber

4Diaphragm

5Eccentric

6Connecting rod

7Pump drive

Fig. 2: Operating principle

Diaphragm liquid pumps are based on reciprocating displacement

pump technology. An elastic diaphragm (4) is moved up and down

by the eccentric (5) and the connecting rod (6). During the down

stroke, the diaphragm sucks in the medium through the inlet valve

(2). During the up stroke, it forces medium out of the pump head

through the exhaust valve (1). The diaphragm hermetically seals

off the working chamber (3) from the pump drive (7).

NF 300 version (specified flow rate)

This pump type is the simplest version of the listed products and

pumps media at the specified flow rate.

NF 300 .27 version (specified flow rate with

overpressure limiting)

If the diaphragm liquid pump is operating against a closed system,

the delivery pressure quickly exceeds the maximum permissible

values. To prevent this happening, an overpressure relief is inte-

grated in the top part of the pump head. If the pressure exceeds

the variable limit range (min. 1.5 to max. 6.5 barg), the valve opens

and the liquid circulates from the pressure side to the suction side

via an internal bypass system. This prevents any further rise in

pressure.

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