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Summary of Contents for KNF N838 E Series
- Page 1 KNF 347394-347605 09/23 N838_E TRANSLATION OF ORIGINAL OPERATING AND INSTALLATION INSTRUCTION ENGLISH DIAPHRAGM PUMP Notice! Before operating the pump and accessories, read and observe the operat- ing and installation instructions as well as the safety information!
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Page 2: Table Of Contents
Contents 1 About this document ................ 3 1.1 Using the operating and installation instructions...... 3 1.2 Exclusion of liability............... 3 1.3 Symbols and markings.............. 4 2 Safety .................... 6 2.1 Personnel and target group ............ 6 2.2 Responsibility of the operator ............ 7 2.3 Working in a safety conscious manner ......... -
Page 3: About This Document
The manufacturer assumes no liability for damages and mal- functions resulting from impermissible spare parts and acces- sories. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... -
Page 4: Symbols And Markings
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. Other sequentially numbered steps follow. This symbol indicates important information. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 5 Warning of hot surface Warning of electrical voltage Warning of poisonous substances Warning of hand injuries through crushing Observe the operating instructions General mandatory sign Use hand protection Tab.2: Explanation of pictograms Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
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Page 6: Safety
Tab.3: Target group Who-does-what Lifecycle phase User Specialized per- matrix sonnel Transport Mounting Connection Commissioning Operation Servicing Troubleshooting Disposal Tab.4: Who-does-what matrix Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... -
Page 7: Responsibility Of The Operator
Make sure that an EMC-compliant installation of the pump is ensured at all times to prevent the occurrence of dangerous situations. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... -
Page 8: Operating Conditions
Make sure that a dangerous situation cannot arise as a result. When pumping hazardous media, observe the safety regula- tions for the handling of said media. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... -
Page 9: Use
2.6.2 Foreseeable misuse The pumps must not be operated in explosive atmospheres. The pumps are not suitable for transferring the following: § Dusts § Liquids § Aerosols § Biological and microbiological substances Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... -
Page 10: Directives And Standards
1.5.2. / 1.5.8. / 1.5.9. / 1.7.4. / 1.7.4.1. / 1.7.4.3. Standards The following standards apply: § EN IEC 55014-1/2 § EN IEC 61000-3-2 § EN 61000-3-3 § EN IEC 63000 The protective goals of the following directive(s) are achieved: Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... -
Page 11: Customer Service And Repair
Alternatively, KNF products (old devices) may also be returned to KNF for a fee (see chapter 11 Re- turns [} 51]). Translation of Original Operating and Installation Instruction, KNF 347394-347605... -
Page 12: Technical Data
N838.1.2KNE 0.5 N838KNE N838ANE Tab.6: Pneumatic values Pneumatic connections Pump type Value N838AN_ Thread size G 1/8 N838KN_ Thread size G 1/8 N838.1.2KNE Thread size G 1/8 Tab.7: Pneumatic connections Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 13 à Ensure that no dangerous situa- tions can arise as a result. Weight Pump type Value N838ANE / N838KNE 2.6 kg N838.1.2KNE 4.4 kg Tab.9: Weight Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 14 Highest permissible relative 80% for temperatures up to air humidity of the environ- 31°C, decreasing linearly to ment 50% at 40°C. Maximum installation altitude 2000 [m above sea level] Tab.10: Other parameters Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
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Page 15: Product Description
Product description Diaphragm pump N838_E 4 Product description Design 1 Outlet (pres- sure side) 2 Inlet (suction side) 3 Electrical con- nection 4 Motor Fig.1: Design N 838 _NE Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 16 Product description Diaphragm pump N838_E 1 Pneumatic connection 2 Motor 3 Electrical connection 4 Outlet (pressure side) 5 Inlet (suction side) Fig.2: Design N838.1.2KNE Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 17 (2). In the upwards stroke, the diaphragm presses the medium out of the pump head via the outlet valve (1). The transfer chamber (3) is separated from the pump drive by the di- aphragm. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
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Page 18: Transport
There is a risk of injury from cutting on the sharp edges when grabbing cor- CAUTION ners or when opening the packaging. à Where appropriate, wear suitable personal protective equipment (e.g., safety shoes, safety gloves). Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 19 Permissible humidity (non- 30 to 85 condensing) [%] Tab.11: Transport parameters and storage parameters Prior to commissioning, make sure that the pump has reached the ambient temperature (3 Technical data [} 12]). NOTICE Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
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Page 20: Installation And Connection
Store the pump at the installation site to allow it to adapt to the ambient temperature before installation (condensa- tion must not be allowed to form). à Mounting dimen- For mounting dimensions, see the following illustrations: sions Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 21 Installation and connection Diaphragm pump N838_E Fig.4: Mounting dimensions N838KNE Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 22 (head, motor). à Installation loca- Make sure that the installation location is dry and that the tion pump is protected from rain, spray water, splash water, dripping water and other contaminants. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 23 Make sure that pump vibrations cannot lead to dangers in combi- nation with adjacent components. à Protection Protect the pump against contact and the ingress of for- against foreign eign bodies. objects Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
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Page 24: Electrical Connection
à Install a device for separating the pump motor from the electrical grid in the electrical installation (e.g. in accor- dance with EN 60335-1). Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 25 2. Connect the ground conductor to the pump motor. 3. Connect the motor wires. 4. Connect the positive and negative terminals. Ensure the correct polarity: Red connection cable: + Black connection cable: - Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
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Page 26: Pneumatic Connection
In this way it is possible to prevent the transfer of possible pump vibrations and noises to the sys- tem. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 27 3. Connect the suction line and the pressure line (for mount- ing dimensions, see Chapter 3 Technical data [} 12]). 4. Lay the suction line and pressure line with a descent so that no condensate can run into the pump. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
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Page 28: Operation
Do not look into the pump inlet/ outlet during operation. à Only operate the pumps under the operating parameters and operating conditions as described in Chapter 3 Tech- nical data [} 12]. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 29 à Ensure that the pump outlet is not closed or restricted. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 30 à Ensure that no dangerous situa- tions can arise as a result. Operation with open gas connection at the inlet can result in contaminants and objects being drawn in. NOTICE Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
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Page 31: Information On Switching The Pump On And Off
Before recommissioning, observe the applicable stan- dards, guidelines, regulations and technical standards at the electrical connection. à Inspecting the Inspect the pump periodically for external damage or leak- pump age. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... -
Page 32: Servicing
Perform periodic inspec- tions for external damage or leakage. à Diaphragm and valve plates At the latest, replace when the pump flow rate decreases. à Silencer (accessories) Replace if soiled. Tab.12: Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... -
Page 33: Cleaning
8.2.1 Flushing the pump When transferring dangerous and environmentally hazardous media, KNF recommends flushing the pump with air at atmo- spheric pressure for a few minutes prior to switch-off (if nec- essary for safety reasons: with an inert gas) to extend the ser- vice life of the diaphragm. -
Page 34: Replacing The Diaphragm And Valve Plates
If the diaphragm is not replaced at the same time as the valve plates/seals, the specified output of the pump can no longer be ensured after the maintenance is performed. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 35 Risk of burns from hot pump parts The pump head or motor may still be hot after operation of the pump. à CAUTION Allow the pump to cool after oper- ation. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 36 Servicing Diaphragm pump N838_E 8.3.1 Changing diaphragms and valve plates (for pump heads made of plastic) Fig.6: Two-headed pump N838.1.2KNE Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 37 Fig.7: Pump head N 838 KN_ versions (plastic pump head) The diaphragm and valve plates/seals are to be replaced in the following order: Initial steps 1. Disconnect the pump from the power supply and ensure that it is voltage-free. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 38 8. Perform steps 1 to 7 for the second pump head. Replacing the valve plates/seals 1. Loosen the screw (9) with a small screw driver. 2. Separate the head plate (3) from the intermediate plate (2). Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 39 11. Perform steps 1 to 9 for the second pump head. Fig.8: Alignment of the disk springs For two-headed pumps: (11) Fig.9: Removal of connection tubes and O-rings (two-headed pumps) Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 40 1. Mount the cover (1). 2. Connect the pump to the power supply. If you have questions with regard to maintenance, please contact our KNF technical adviser (contact data: www.knf.de). Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 41 Servicing Diaphragm pump N838_E 8.3.2 Changing diaphragms and valve plates (for pump heads made of aluminum) Fig.10: One-headed pump N838ANE Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 42 3 Head plate 4 Head plate screw 5 Cover 6 Valve plate/ seal 7 Diaphragm 8 Shim 9 Connecting 10 Counter- weight M Marking Fig.11: Sectional drawing of head N828AN Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 43 Replacing the valve plates/seals 1. Separate the head plate (3) from the intermediate plate (2). 2. Remove the valve plates/seals (6) from the intermediate plate (2). Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 44 3.5 Nm). Final steps 1. Connect the pump to the power supply. If you have questions with regard to maintenance, please con- tact our KNF technical adviser (contact data: www.knf.com). Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
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Page 45: Spare Parts And Accessories
Spare parts and accessories Diaphragm pump N838_E 9 Spare parts and accessories To order spare parts and accessories, please contact your KNF sales partner or KNF Customer Service (con- tact data: see www.knf.com). 9.1 Spare parts Spare part set A spare part set consists of: For one-headed pumps: à... -
Page 46: Accessories
007006 Hose connector (straight) 000360 Except N838.1.2KN_: PA, G 1/8, ID6 Hose connector 004975 N838.1.2 KN_: PA, G 1/8, ID8 Angled hose connector 001858 Except N838.1.2KN_: PA, G1/8, ID6 Tab.15: Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... -
Page 47: Troubleshooting
à Check and ensure that no voltage is present. à Allow the pump to cool before troubleshooting. à Check the pump (see following tables). Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23... - Page 48 Determine the cause of the overheating and elimi- nate the cause. à Diaphragm and valves Replace diaphragm and valves (see Chapter 8 Ser- are worn or defective. vicing [} 32]). Tab.16: Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 49 Replace diaphragm and valves (see Chapter 8 Ser- are worn or defective. vicing [} 32]). à Replaced diaphragms Ensure that shim rings were fitted on the diaphragm and valve plates. thread. Translation of Original Operating and Installation Instruction, KNF 347394-347605 09/23...
- Page 50 Tab.18: Fault cannot be rectified If you are unable to identify any of the specified causes, send the pump to KNF Customer Service (contact data: see www.knf.com). 1. Flush the pump with air for a few minutes (if necessary for...
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Page 51: Returns
If necessary, request original packaging for a fee. Returns KNF shall undertake to repair the pump only under the condi- tion that the customer presents a certificate regarding the medium that is pumped and the cleaning of the pump. In this case too, old devices can be returned. - Page 52 KNF Neuberger GmbH Alter Weg 3 79112 Freiburg Germany Tel. +49 (0)7664/5909-0 E-mail: info.de@knf.com www.knf.com KNF worldwide You can find our local KNF partners at: www.knf.com...
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