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DIAPHRAGM LIQUID PUMP
NF 2.35
NF 2.35 XP DC 24V
DCB-B / DCB-4B
XP / XT [Ch. 4]
2.35
NF
- / PMLxxxx / PLxxxx [Ch. 1]
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.
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
info@knf-flodos.ch
KNF Flodos AG BA_NF2-35_EN_02_164912
Translation of original Operating and Installation Instructions
Supply voltage [Ch. 4]
Contents
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
Page
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Summary of Contents for KNF NF 2.35
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Page 1: Table Of Contents
DIAPHRAGM LIQUID PUMP NF 2.35 NF 2.35 XP DC 24V Supply voltage [Ch. 4] DCB-B / DCB-4B XP / XT [Ch. 4] 2.35 - / PMLxxxx / PLxxxx [Ch. 1] Operating and Installation Instructions Read and observe these Oper- ating and Installation Instruc-... -
Page 2: About This Document
Diaphragm liquid pump NF 2.35 About this document About this document Disclaimer of liability KNF accepts no liability for any damage caused by failure to follow the operating instructions. 1.1. Use of the Operating and Installation Instruc- tions The Operating and Installation Instructions are part of the pump. -
Page 3: Use
The pumps must not be used to transfer liquids in systems in which there is a risk of bursting due to overpressure. DANGER For special modifications outside the standard technical specifica- tions, please contact your KNF technical adviser. KNF Flodos AG BA_NF2-35_EN_02_164912 Translation of original Operating and Installation Instructions... -
Page 4: Safety
Diaphragm liquid pump NF 2.35 Safety Safety Observe the safety precautions in Chapters 6. Installation and connection and 7. Operation. The pumps are built according to the generally recognised rules of technology and in accordance with the pertinent occupational safety and accident prevention regulations. Nevertheless, dangers may occur during their use which may lead to injuries to the user or others, or to damage to the pump or other property. - Page 5 ▪ IEC/EN 61000-6-2 ▪ IEC/EN 61000-6-3 Customer service and All repairs to the pump(s) must be carried out by the relevant KNF repairs customer service team. Only use genuine parts from KNF for servicing work. KNF Flodos AG BA_NF2-35_EN_02_164912 Translation of original Operating and Installation Instructions...
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Page 6: Technical Data
Diaphragm liquid pump NF 2.35 Technical data Technical data Pump materials The pump type XP stands for: Parts in contact with media Material Pump head PEEK Valve plate EPDM O-ring EPDM Diaphragm EPDM Resonating Diaphragm PTFE Tab. 2 The pump type XT stands for:... - Page 7 Diaphragm liquid pump NF 2.35 Technical data Specifications NF 2.35 DCB-B / DCB-4B Motor variant DCB-B DCB-B DCB-4B Supply voltage [V] 10..26.4 Power consumption [W] 10.3 12.3 Max. I load [A] 0.86 0.46 1.1..0.44 Protection class [-] IP50 Weight [g] Tab.
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Page 8: Assembly And Function
Diaphragm liquid pump NF 2.35 Assembly and function Assembly and function Assembly Outlet Inlet Head plate Connecting plate Intermediate plate Motor Connecting lead Fig. 1: Diaphragm liquid pump Outlet valve Inlet valve Working chamber Diaphragm Eccentric Connecting rod Pump drive Fig. -
Page 9: Installation And Connection
➔ Mounting dimensions (see Fig. 3 and 4) Mounting dimensions Fig. 3: Mounting dimensions NF 2.35 DCB-B Fig. 4: Mounting dimensions NF 2.35 DCB-4B ➔ Make sure that the installation location is dry and the pump is... - Page 10 Diaphragm liquid pump NF 2.35 Installation and connection 6.1. Electrical connection ➔ Only have the pump connected by an authorized specialist. ➔ Only 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.
- Page 11 For further information, contact your KNF technical adviser (for contact details, see last page). KNF Flodos AG BA_NF2-35_EN_02_164912 Translation of original Operating and Installation Instructions...
- Page 12 Service Kit Pump Head NF 2.35 XP item no. 165 704 NF 2.35 XT item no. 165 705 Correct fitting: Plug-in connector not ac-...
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Page 13: Operation
For further information, contact your KNF technical adviser (for contact details, see last page). ➔ If the pump stops running, restore the system to normal at- Pump standstill mospheric pressure. - Page 14 ➔ Take steps to ensure that this cannot produce a CAUTION hazardous situation. Flow rate NF 2.35 Fig. 6: Flow rate of the pump NF 2.35 DCB-B / DCB-4B KNF Flodos AG BA_NF2-35_EN_02_164912 Translation of original Operating and Installation Instructions...
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Page 15: Servicing
Diaphragm liquid pump NF 2.35 Servicing Servicing 8.1. Servicing schedule Component Servicing interval Pump Regular inspection for external damage or leaks Pump head Clean if the flow rate decreases, the pump does not work or no vacuum is created (Chapter 8.2) - Page 16 Diaphragm liquid pump NF 2.35 Servicing 8.2.2. Disassembling the pump head Loosen the four head screws (1). Remove resonating diaphragm (4) and seal (3) from the con- necting plate (5). Take both O-rings (8) and anchor valves (9) out of the connect- ing plate (5), together with the intermediate plate (10).
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Page 17: Troubleshooting
Diaphragm liquid pump NF 2.35 Troubleshooting Troubleshooting ➔ Disconnect the pump from the power supply before working on the pump. Pump does not work Possible cause Fault remedy ➔ Connect pump to power supply Pump not connected to power supply Power supply is not switched on ➔... - Page 18 Fault cannot be rectified If you are unable to identify any of the above causes, please send the pump to KNF customer service (see address on last page). Flush the pump with a suitable neutralising liquid to free the pump head of dangerous or aggressive substances...
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Page 19: 10. Decontamination Declaration
Diaphragm liquid pump NF 2.35 Decontamination declaration 10. Decontamination declaration KNF shall only undertake to repair the pump on condition 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... - Page 20 KNF worldwide Please find your local KNF partners at: www.knf.com...
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