KNF N936 Translation Of Original Operating And Installation Instructions
Diaphragm pump
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- Page 1 KNF 320276-320275 07/21 N936 TRANSLATION OF ORIGINAL OPERATING AND INSTALLATION INSTRUCTION ENGLISH DIAPHRAGM PUMP Notice! Before operating the pump and accessories, read and observe the operating and installation instructions as well as the safety information!
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Page 2: Table Of Contents
Index KNF Neuberger GmbH Alter Weg 3 1 About this document ............ 3 79112 Freiburg 2 Use ................... 6 Germany 3 Safety................ 8 Tel. +49 (0)7664/5909-0 4 Technical data .............. 11 Fax. +49 (0)7664/5909-99 5 Design and function ............ 13 6 Transport ................ -
Page 3: About This Document
à In the event of uncertainties with regard to the content of the operating and installation instructions, please contact the manufacturer (contact data: see www.knf.com). Please have the type and serial number of the pump ready. à Read the operating and installation instructions before you commission the pump. - Page 4 An activity to be carried out is specified here (a step). 1. The first step of an activity to be carried out is specified here. Follow other sequentially numbered steps. This symbol indicates important information. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
- Page 5 Warning of electrical voltage Warning of poisonous substances Warning of hand injuries through crushing Observe the operating instructions General mandatory sign Wear hearing protection Environmentally conscious disposal Tab.2 Explanations of pictograms Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
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Page 6: Use
Only transfer gases that remain stable under the pressures and tempera- tures that arise in the pump. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... - Page 7 Food The pumps are not suitable for aggressive media. For aggressive media, pumps from the KNF product line are available – please contact us. Pumps that can produce both vacuum as well as overpressure may not be used to simultaneously produce vacuum and overpressure.
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Page 8: Safety
Where applicable, also take into account external energy sources (such as radiation sources) that could additionally heat the medium. In case of doubt, contact KNF Customer Service. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... - Page 9 The terminal strip is suitable exclusively for wiring at the factory. § The pumps must be connected to protective earth. § The motor has insulation class F (+155°C) and is equipped with a self- resetting overtemperature switch. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
- Page 10 Safety Diaphragm Pump N936 Customer service and repairs The pumps are maintenance-free. However, KNF recommends periodic in- spection of the pump for obvious changes in noise or vibration. Only have repairs to the pumps performed by qualified KNF personnel. Housings with electrically live components may only be opened by special- ist personnel.
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Page 11: Technical Data
*Bar rel related to 1013 hPa **Liters in standard state (1013 hPa, 20°C) Pneumatic connections Pump type Value N936 EU Thread size G 1/4 N936 US Thread size NPT 1/4 Tab.5 Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... - Page 12 *for ambient temperature >+50°C in intermittent or short-period operation, the max. surface temperature on the capacitor is to be checked in the final device. This must not exceed +85°C. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
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Page 13: Design And Function
Diaphragm Pump N936 Design and function 5 Design and function Design 1 Fan 2 Pneumatic pump inlet 3 Pneumatic pump outlet 4 Electrical connection Fig.1 Diaphragm pump N936 Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... - Page 14 (2). In the upwards stroke, the diaphragm presses the medium out of the pump head via the outlet valve (1). The pumping chamber (3) is separated from the pump drive by the diaphragm. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
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Page 15: Transport
Permissible humidity (non-condens- 30 to 85 ing) [%] Tab.9 Transport parameters Prior to commissioning, make sure that the pump has reached the ambient temperature (4 Techni- cal data). NOTICE Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... -
Page 16: Installation And Connection
7.1 Installing the pump à Store the pump at the same ambient temperature as the installation to mitigate condensation. à Mounting dimensions For mounting dimensions, see the following illustrations: Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... - Page 17 à Protect the pump from dust. à Protect the pump from coating with greases and oils. à Protect the pump from vibration and impact. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
- Page 18 Automatic restart after tripping of the self-re- setting protection temperature limiter. Risk of pump damage during operation à Take protective measures against the pene- tration of foreign bodies into the pump. CAUTION Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
- Page 19 Refer to the pump nameplate for the rated current consumption. 2. Connect the motor cable: The electrical connection is established via three flat plugs (each 6.3 x 0.8 for L1, N and PE). Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
- Page 20 A container that collects the condensate must therefore be in- stalled in the pressure line. 3. Lay the suction line and pressure line with a descent so that no con- densate can run into the pump. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
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Page 21: Operation
The pumps are built-in devices. Before they are commissioned, it must be ensured that the machines or systems into which the pumps are in- stalled comply with the relevant provisions. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... - Page 22 When the pump is at a standstill, establish normal atmospheric pres- sure in the lines. Vapors as medium The service life of the diaphragm can be extended, if no condensate forms in the pump. Therefore: Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
- Page 23 Switching off/deactivating the pump à At the end of an evacuation or a process, KNF recommends letting the pump run for several minutes with air as the medium to remove con- densate from the pump head (drying of the pump).
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Page 24: Servicing
(if necessary for safety reasons: with an inert gas) to extend the service life of the diaphragm. à Discharge the media safely. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... - Page 25 CAUTION à Allow the pump to cool after operation. à Always replace diaphragm, valves and O-rings together to maintain the performance and safety of the pump. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
- Page 26 2. Loosen the four head plate screws (7). 3. Remove the pump head (consisting of head plate (12) and intermedi- ate plate (8)) together from the pump housing (9). Fig.5 Pump N936 Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
- Page 27 1. Reconnect the suction and pressure side to the pump. 2. Connect the pump to the electrical mains. If you have questions with regard to maintenance, please contact your KNF Customer Service (contact data: see www.knf.com). Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
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Page 28: Troubleshooting
Determine the cause of the overheating and elim- inate the cause. à Diaphragm, valves or O-rings are Replace diaphragm, valves or O-rings (see Chap- worn or defective. ter 9.3 Replacing diaphragm, valves and O-rings). Tab.14 Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... - Page 29 Pump exhibiting changed running noises and vibrations. Cause Troubleshooting à Pump bearing worn or defective. Determine the cause. à Contact KNF Customer Service. à Drive worn or defective. See operating instructions for the motor. Tab.16 Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
- Page 30 3. Clean the pump (see Chapter 9.2.2 Cleaning the pump). 4. Send the pump together with completed Health and Safety Clearance and Decontamination Form to KNF, stating the nature of the trans- ferred medium. Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21...
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Page 31: Spare Parts And Accessories
Tab.18 Fig.7 Pump head (exploded view, symbolic) 11.2 Accessories Accessories Order number Rubber-bonded metal; M4 IG (4 124782 pieces/pump) Hose connectors Ms G1/4" for 004950 ID-9mm Cu-seal 005150 Tab.19 Translation of Original operating and installation instruction, English, KNF 320276-320275 07/21... -
Page 32: Returns
Returns KNF shall undertake to repair the pump only under the condition that the customer presents a certificate regarding the medium that is pumped and the cleaning of the pump. Please follow the instructions at knf.com/repairs. - Page 36 KNF worldwide You can find our local KNF partners at: www.knf.com...
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