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KNF Flodos AG BA_NF2-35_EN_02_164912 
Translation of original Operating and Installation Instructions

 

Keep for future reference! 

DIAPHRAGM LIQUID PUMP 

NF 2.35 

 

 

Operating and 
Installation 
Instructions 

Read and observe these Oper-
ating and Installation Instruc-
tions! 
 
An additional letter prefixing 
the NF model code is a coun-
try-specific designation, with no 
technical relevance. 
 

 

  

 

 

 

 

 

 

Contents 

Page 

1.

 

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

 

2.

 

Use ........................................................................................... 3

 

3.

 

Safety ....................................................................................... 4

 

4.

 

Technical data .......................................................................... 6

 

5.

 

Assembly and function ............................................................. 8

 

6.

 

Installation and connection ....................................................... 9

 

7.

 

Operation ................................................................................ 13

 

8.

 

Servicing ................................................................................. 15

 

9.

 

Troubleshooting ...................................................................... 17

 

10.

 

Decontamination declaration .................................................. 19

 

 

 

 

KNF Flodos AG 
Wassermatte 2 
6210 Sursee, Switzerland 

Tel  +41 (0)41 925 00 25 
Fax +41 (0)41 925 00 35 

www.knf-flodos.ch 
[email protected] 

NF 2.35 XP DC 24V 

- / PMLxxxx / PLxxxx   [Ch. 1] 

 

NF 

 

2.35 

 

XP / XT   [Ch. 4] 

 

DCB-B / DCB-4B 

Supply voltage  [Ch. 4] 

 

Содержание NF 2.35

Страница 1: ...de is a coun try specific designation with no technical relevance Contents Page 1 About this document 2 2 Use 3 3 Safety 4 4 Technical data 6 5 Assembly and function 8 6 Installation and connection 9...

Страница 2: ...markings Warning WARNING This symbol indicates a potential danger It also indicates the possible consequences of failure to observe the warning The signal word e g Warn ing indicates the level of dang...

Страница 3: ...n the permissible temperature range see Chapter 4 The transferred medium should not contain particles as these can prevent the pump from working correctly If this cannot be guaran teed a filter 50 m w...

Страница 4: ...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 When trans...

Страница 5: ...ed as not ready for use Partly completed machinery may not be commissioned until such time as it has been determined that the machine in which the partly completed machinery is to be assem bled confor...

Страница 6: ...PTFE Resonating diaphragm PTFE Tab 3 1 according to DIN ISO 1629 and 1043 1 2 The pump head comprises an intermediate plate and a connecting plate Hydraulic ratings Parameter Value PN nominal pressure...

Страница 7: ...0 46 1 1 0 44 Protection class IP50 Weight g 1 260 Tab 6 1 The weight may differ slightly from the stated value depending on the version Electrostatic sensitive components ESD Other parameters Paramet...

Страница 8: ...alve 3 Working chamber 4 Diaphragm 5 Eccentric 6 Connecting rod 7 Pump drive Fig 2 Pump assembly The diaphragm liquid pumps are based on reciprocating displace ment pump technology The elastic diaphra...

Страница 9: ...instructions Before installation store the pump at the installation location to bring it up to ambient temperature Mounting dimensions see Fig 3 and 4 Fig 3 Mounting dimensions NF 2 35 DCB B Fig 4 Mou...

Страница 10: ...connect the pump when the power supply is disconnected When connecting the device to a power source the applicable norms directives regulations and technical standards must be observed Connecting the...

Страница 11: ...ilitate the priming process Check that the hoses and transition joints are fitted correctly and securely Check that the system is leak tight WARNING The bursting of unprotected parts of the system may...

Страница 12: ...rvicing it is recommended to use a new head plate with new rubber part to ensure continued maximum leak tightness Service Kit Pump Head NF 2 35 XP item no 165 704 NF 2 35 XT item no 165 705 Plug in co...

Страница 13: ...g excessive pressure and the inherent dangers thereof is to place a bypass line with a pressure relief valve between the pressure and suction sides of the pump For further information contact your KNF...

Страница 14: ...lev el If you experience a brief power interruption check for the presence of pressure or vacuum before restarting For more specific information contact your KNF technical adviser Switching off the pu...

Страница 15: ...erably sooner Filter accessory Change if it is dirty Tab 8 8 2 Disassemble pump head WARNING Health hazard due to dangerous substances in the pump Depending on the medium transferred caustic burns or...

Страница 16: ...in pump housing Screw diaphragm 11 with washer 12 into connecting rod Make sure that no washers 12 fall into the pump housing Fully tighten the diaphragm by hand Place O rings 8 and anchor valves 9 i...

Страница 17: ...alve plates or seals are worn Replace diaphragm valve plates and seals see Chapter 8 2 Replace pump Tab 10 Pump is not priming Possible cause Fault remedy Suction side of pump not con nected Connect t...

Страница 18: ...the pump head install suction side filter if required see Chapter 8 2 Viscosity of the transferred medium is too high Contact KNF Incorrect interchange of pres sure and suction line connec tions Remo...

Страница 19: ...n that the customer provides certification of the transferred media and the cleaning of the pump decontamination declaration In order to send a product back use the decontamination declaration which e...

Страница 20: ...KNF worldwide Please find your local KNF partners at www knf com...

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