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Diaphragm liquid pump NF 300 

Use 

KNF Flodos BA_NF300_EN_08_068697.docx 
Translated from the Original Operating and Installation Instructions

 

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 

Содержание NF 1.300

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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