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Summary of Contents for KNF N 922 ST
- Page 1 KNF 318663-318662 06/24 N922S_E IP20 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
Table of 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 318663-318662 06/24... -
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 318663-318662 06/24... - Page 5 General warning symbol 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 Tab.2: Explanation of pictograms Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
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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 318663-318662 06/24... -
Page 7: Responsibility Of The Operator
Ensure that the pump installation is EMC compliant such that no hazardous situations can occur. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... -
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 318663-318662 06/24... -
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 318663-318662 06/24... -
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 60034-1 § EN IEC 55014-1/2 § EN IEC 61000-3-2 § EN 61000-3-3 § EN IEC 63000 Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... -
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 [} 46]). Translation of original Operating and Installation Instruction, KNF 318663-318662... -
Page 12: Technical Data
Pump materials Assembly Material Material N922STE N922SPE Pump head Stainless Stainless steel steel Diaphragm PTFE-coated EPDM Reed valve Stainless Stainless steel steel Valve limiter Stainless Stainless steel steel O-ring EPDM Tab.5: Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... - Page 13 13.5 ± -6.0 bar rel 7 ± 10% 5 ± 10% 7± 10% 8.5 ± Tab.6: *Liters in the standard state based on ISO 8778 and ISO 21360-1/2 (1000 hPa, 20°C) Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 14 The three-phase AC motors are equipped with PTC sen- sors which must be monitored by the customer. Pneumatic connections Pump type Value N922S_E EU: Thread size G1/4* US: Thread size NPT1/4* Tab.8: *Acc. to ISO 228 Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 15 A leak test can be used to determine whether the origi- nal gas tightness has been re-established. Weight Parameter Value Value N922STE N922SPE Weight [kg] Thermal switch The motors are equipped standard with a thermal switch for monitoring against overheating. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
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Page 16: Product Description
4 Product description Design 1 Pump inlet 2 Pump outlet 3 Pump head 4 Motor 5 Capacitor (only capaci- tor motor) 6 Electrical ter- minal box Fig.1: Diaphragm pump N922S_E Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... - 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 318663-318662 06/24...
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Page 18: Transport
à Keep the original packaging of the pump (e.g. for later storage). à Inspect the pump for transport damage after receiving it. à Document any transport damage that has occurred. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... - Page 19 Permissible humidity (non- 30 to 85 condensing) [%] Tab.10: 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 318663-318662 06/24...
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Page 20: Installation And Connection
Store the pump at the installation location to allow it to adapt to the ambient temperature before installation (con- densation must not be allowed to form). à Mounting dimen- For mounting dimensions, see the following figures: sions Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... - Page 21 Installation and connection Diaphragm pump N922S_E IP20 Fig.3: Mounting dimensions N922S_E (three-phase AC motor) Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- 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 318663-318662 06/24...
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Page 23: Electrical Connection
à The pumps have been developed, manufactured and tested for S1 operation. Additional operating modes can be made possible on a project-specific basis following consultation with KNF Cus- tomer Service. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... - Page 24 Connect the electrical power cables to terminals L1 and N of the pump motor. 6. For pumps with three-phase motors: Connect the electrical power cables in accordance with Fig. 5 and Fig. 6. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 25 Installation and connection Diaphragm pump N922S_E IP20 Fig.5: Star connection (three-phase motor; high voltage) Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 26 Installation and connection Diaphragm pump N922S_E IP20 Fig.6: Δ-connection (three-phase motor; low voltage) 7. Close the terminal box cover again. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
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Page 27: 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 318663-318662 06/24... - Page 28 3. Lay the suction line and pressure line with a descent so that no condensate can run into the pump. Pneumatic noises can be reduced or dissipated by using a silencer. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
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Page 29: Operation
The pumps are built-in devices. Before they are commis- sioned, it must be ensured that the machines or systems into which the pumps are installed comply with the rele- vant provisions. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... - Page 30 NOTICE of the pump. Further information is available from KNF Customer Service (contact data: see www.knf.com). Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 31 à KNF recommends: When pumping corrosive media, flush the pump before switching off (see Chapter 8.2.1 Flushing the pump [} 34]) to extend the service life of the di- aphragm. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
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Page 32: 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 318663-318662 06/24... -
Page 33: Servicing
à Periodically check for no- ticeable changes to noises and vibrations. à Gas connections Perform periodic inspec- tions for external damage or leakage. Tab.11: Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... -
Page 34: 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 35: Changing The Diaphragm, Reed Valve And Valve Limiter (St Design)
Item designation** Quantity Diaphragm Reed valve Valve limiter O-ring (10) O-ring (11) Slotted cap screw Tab.12: *According to spare parts list, Chapter 9.1 Spare parts 41] **According to Fig. 7 Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24... - Page 36 Depending on the medium being trans- ferred, caustic burns or poisoning is WARNING possible. à Wear protective equipment if nec- essary, e.g., protective gloves, goggles. à Clean the pump with suitable mea- sures. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 37 If the diaphragm is overtightened, there is risk of the PTFE coating detaching. 7. Move the connection rod (connection part between drive shaft and diaphragm) back to bottom dead center. Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 38 5. Check the valve seats, intermediate plate (2), head plate (3) and, if necessary, O-ring groove for contamination and damage. Clean the parts if necessary. Contact KNF in the event of unevenness, scratches or corrosion. Order and replace the damaged parts. 6. Insert the reed valves and valve limiters: Insert the new reed valves (7) and valve limiters (8) in the valve seats of the intermediate plate (2).
- Page 39 WARNING Leaks may lead to poisoning, chemical burns or similar injuries. If you have questions with regard to maintenance, please contact your KNF technical adviser (contact data: see www.knf.com). Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 40 1 Housing 2 Intermediate plate 3 Head plate 4 Screws 5 Diaphragm 6 Screws 7 Valve springs 8 Valve limiter 9 Locating pin 10 O-ring 11 O-ring Fig.7: Pump parts Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
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Page 41: Spare Parts And Accessories
Spare parts and accessories Diaphragm pump N922S_E IP20 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... -
Page 42: 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 318663-318662 06/24... - Page 43 The applied voltage must not exceed the value specified in Chapter 6.2 Electrical connection [} 23]. à Diaphragm and valves Replace diaphragm and valves (see Chapter 8 Ser- are worn or defective. vicing [} 33]). Tab.17: Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 44 Stop the pump immediately. broken à Change the diaphragm (see 8 Servicing [} 33]). à Diaphragm and valves Replace diaphragm and valves (see Chapter 8 Ser- are worn or defective. vicing [} 33]). Tab.18: Translation of original Operating and Installation Instruction, KNF 318663-318662 06/24...
- Page 45 Tab.19: 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 46: 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 48 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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