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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] 

 

Summary of Contents for NF 1.300

Page 1: ...c 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 Se...

Page 2: ...es 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 failur...

Page 3: ...an 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 p...

Page 4: ...on 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 cleanin...

Page 5: ...ed 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...

Page 6: ...de 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 E...

Page 7: ...Assembly Material1 Pump head PP 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 Assembl...

Page 8: ...e 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 12 Tab 7 Specifications NF 300 DC Motor voltage 12V 24V Power consum...

Page 9: ...on 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 Ele...

Page 10: ...he 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 driv...

Page 11: ...install and operate the pumps under the operating parameters and conditions described in Chapter 4 Technical data Observe the safety notes see chapter 3 6 1 Installation Before installation store the...

Page 12: ...NF 300 Installation and connection KNF Flodos BA_NF300_EN_08_068697 docx Translated from the Original Operating and Installation Instructions 12 Fig 7 Mounting dimensions NF 300 DCB Fig 8 Mounting di...

Page 13: ...hose and drip water Protect the pump against dust Protect the pump against vibrations and jolts Generally speaking the pump can be mounted in any orienta tion The venting and accuracy of the pump is o...

Page 14: ...pump during operation Take protective measures to ensure that no foreign objects can get into the pump or pene trate the motor see protection class 6 2 Electrical connection For pumps with alternatin...

Page 15: ...er to ensure that emissions comply with the EN 55014 1 emission standard this pump type with a brushless DC motor DCB must be fitted with an additional circuit The additional circuit must be installed...

Page 16: ...e the protective caps from the connections Connect the inlet and outlet lines Keep the inlet line as short as possible in order to keep the priming process as brief as possible If the pump is used to...

Page 17: ...the drive Avoid contact with flammable materials WARNING Danger of bursting of the fluid system due to overpressure The pump builds up pressure A closed system can cause the max permitted operating pr...

Page 18: ...on Short start and stop cycles may adversely affect the service life of the brushed motors If the pump is operated with short cycles in your application please contact a KNF pump specialist for furthe...

Page 19: ...300 Operation KNF Flodos BA_NF300_EN_08_068697 docx Translated from the Original Operating and Installation Instructions 19 Fig 11 Flow rate of pump NF 300 DC DCB Flow rate NF 1 300 Fig 12 Flow rate...

Page 20: ...iquid and pump empty 8 2 1 Flushing the pump If pumping aggressive media KNF recommends flushing the pump with air under atmospheric conditions for several minutes prior to switch off if necessary for...

Page 21: ...ere previously Make sure that no U washers 19 fall into the pump housing Screw in the diaphragm 16 By lightly pressing on the diaphragm push the ridge on the underside of the diaphragm into the groove...

Page 22: ...27 6 over the diaphragm 27 9 Carefully place the head plate 1 with fitted new O ring 11 screwed in setscrew 4 and hexagon nut 3 over the whole unit The positions of the intermediate plate the connecti...

Page 23: ...8 4 Adjusting the overflow Test set up instrumentation as shown in the diagram Test set up for overflow Fig 15 Test set up for overflow Switch on the pump and run until there are no air bubbles in the...

Page 24: ...Remove blockage External valve is closed or filter is blocked Check external valves and filters Diaphragm valve plates or seals are worn out Replace diaphragm valve plates and seals see Section 8 3 Ta...

Page 25: ...r clamping elements Particles in the pump Clean the pump head install suction side filter if required see Section 8 2 Viscosity of the liquid is too high Contact KNF Incorrect interchange of outlet an...

Page 26: ...300 KT TT 068691 Spare parts kit NF 1 300 KT TT 069728 Spare parts kit NF 300 FT 151902 Spare parts kit NF 1 300 FT 151903 Spare parts kit NF 300 27 KP KP 51 068692 Spare parts kit NF 1 300 27 KP KP 5...

Page 27: ...s 27 11 Return of the pump KNF undertakes to repair the pump only under the condition that the customer provides a certificate of the pumped medium and cleaning of the pump For this purpose please fol...

Page 28: ...KNF worldwide Please find your local KNF partners at www knf com...

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