Related Manuals for Bosch Rexroth LFA DB Series
Summary of Contents for Bosch Rexroth LFA DB Series
- Page 1 2-way cartridge valve (Safety valve according to Pressure Equipment Directive 2014/68/EU) Type LFA...DB(W).-7X/...E Operating instructions Replaces 04.18 RE 21055-B/02.20 Mat. No. R901451284 English...
- Page 2 BG: Въвеждането в експлоатация на този продукт може да се извърши едва тогава, когато разполагате с това ръководство за експлоатация на разбираем за Вас официален език на ЕС и сте разбрали неговото съдържание. Ако това не е така, обърнете се към Вашия партньор Bosch Rexroth или към компетентен сервиз. Ще го намерите на www.boschrexroth.com.
- Page 3 UE que você entenda e se você tiver compreendido seu conteúdo. Se não for esse o caso, entre em contato com a pessoa de contato da Bosch Rexroth ou com o centro de serviço responsável.
- Page 4 Our products are subject to a natural process of wear and aging. © All rights with Bosch Rexroth AG, also in case of applications for industrial property protection. It may not be reproduced or given to third parties without consent of Bosch Rexroth AG.
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Page 5: Table Of Contents
10.1 Cleaning and care 10.2 Inspection and maintenance 10.3 Repair 10.4 Spare parts Disassembly and replacement Disposal 12.1 Environmental protection 12.2 Return to Bosch Rexroth AG 12.3 Packaging 12.4 Materials used 12.5 Recycling Extension and modification 13.1 Extension 13.2 Modification RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG... - Page 6 6/48 Troubleshooting 14.1 How to proceed for troubleshooting Technical data Appendix 16.1 List of addresses Declaration of conformity Index Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
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Page 7: About This Documentation
1.3 Representation of information Uniform safety instructions, symbols, terms and abbreviations are used so that you can quickly and safely work with your product using this documentation. For a better understanding, they are explained in the following sections. RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG... - Page 8 Table 4: Meaning of the symbols Symbol Meaning If this information is not observed, the product cannot be used and/or operated optimally. Individual, independent action Numbered instruction: The numbers indicate that the actions must be carried out one after the other. Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
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Page 9: Safety Instructions
Read this documentation completely and thoroughly before working with the product. Keep this documentation in a location where it is accessible to all users at all times. Always include the required documentation when you pass the product on to third parties. RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG... -
Page 10: Intended Use
2.3 Improper use Any use deviating from the intended use is improper and thus not admissible. Bosch Rexroth AG does not assume any liability for damage caused by improper use. The user assumes all risks involved with improper use. The following cases of foreseeable misuse are also regarded as being improper: •... -
Page 11: Qualification Of Personnel
• In particular, completely understanding the correlations regarding the safety equipment and • Having knowledge of the function and set-up of hydraulic components. Bosch Rexroth offers measures supporting the training in specific fields. An overview over the training contents can be found online at: www.boschrexroth.de/didactic 2.5 General safety instructions... -
Page 12: Product-Specific Safety Instructions
In connection with fire or other heat sources, leaking hydraulic fluid mist may lead to fire or explosions due to defective or incompletely mounted safety valves and their connections. Do not use the safety valve in areas with open fire and only at a sufficient distance to hot heat sources. Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20... - Page 13 Only use the safety valve within the environmental and fluid temperatures intended for that purpose. In case of leakage, immediately exchange damaged seals or the safety valve. RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG...
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Page 14: Personal Protective Equipment
(such as gloves, working shoes, safety goggles, working clothes, etc.). 2.8 Obligations of the machine end-user The machine end-user of the Bosch Rexroth safety valve is responsible that • the safety valve is only used according to the intended use as defined in these operating instructions. -
Page 15: General Information On Damage To Property And Damage To Product
Leaking hydraulic fluid leads to environmental pollution. Immediately remedy possible leakage. Dispose of the hydraulic fluid in accordance with the currently applicable national regulations in your country. Wear! Wear may lead to malfunctions. Carry out the prescribed maintenance works. RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG... -
Page 16: Scope Of Delivery
Check the scope of delivery for possible transport damage, see section 6 "Transport and storage". In case of complaints, please contact Bosch Rexroth AG, see section 16.1 "List of addresses". Valve mounting screws are not included in the scope of delivery; they can, however, be ordered separately. -
Page 17: Product Information
Max. operating pressure pmax = 400 bar Adm. temperature range e.g. -10 °C ≤ Ta ≤ +60 °C Designation of origin Made in Germany Company address Bosch Rexroth AG D97816 Lohr am Main Customer / production order e.g. 123456789123456789 CE mark Component marking e.g. TUEV.SV.14-1138.38,5.F.2000.200 Testing authority e.g. 0036... - Page 18 You may only install cartridges listed in table 8 "Approved cartridges", see below. Table 8: Approved cartridges Type of information Material number (NBR) Material number (FKM) NG32 R901468313 R901468316 NG40 R901351868 R901363295 NG50 R901353391 R901363297 NG63 R901353392 R901363298 Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
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Page 19: Component Marking
Safety valve Mark of the notified body which has carried out the type-examination procedure The maximum flow specified in the component marking can only be used in case of operation within the identical pressure range, see "Data sheet 21055" RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG... -
Page 20: Transport And Storage
Transport and storage 6 Transport and storage 6.1 Transporting the product Bosch Rexroth hydraulic valves are high-quality products. In order to prevent damage at the safety valve, transport the safety valves in the original packaging or with equivalent transport protection. CAUTION... -
Page 21: Storing The Safety Valve
• Ensure that the lifting gear's lifting capacity is sufficient in order to transport the safety valve without risk. • Use textile attachment devices according to DIN EN 1492-2. Further information regarding the transport is available from Bosch Rexroth. Further information regarding the transport using chain hoists is also available in the data sheet 07600-B, chapter 6 "Transport and storage". -
Page 22: Assembly
Danger of jamming and bruising! Danger of component damage! Insufficient installation space may lead to jamming or abrasions in case of actuation or adjustment works at the safety valve. Components cannot be properly mounted or might be damaged. Make sure that the assembly space is sufficient. Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20... -
Page 23: Unpacking
In order to assemble the safety valve, you need standard tools only. Apart from that, you need a manual torque wrench to tighten the valve mounting screws. For the prescribed tightening torques, please refer to table 11. RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG... -
Page 24: Accessories
24/48 Assembly 7.5 Accessories The following accessories are recommended. They are not included in the scope of delivery and can be ordered separately from Bosch Rexroth: Table 10: Available accessories Valve mounting set Material number Size 32 R901476528 Size 40, 50 R901362574 Size 63... -
Page 25: Assembling The Safety Valve
3 Seals, pilot oil connections 4 Compression spring 5 Valve insert 6 Axial seal When inserting a two-part sealing package (6), consisting of support ring (6.2) and O-ring (6.1), correct position of the support ring has to be ensured. RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG... - Page 26 When sealing the connections, make sure that no contamination can get into the system. Ensure that no cleaning agents are able to penetrate the hydraulic system. Have sufficiently dimensioned collecting containers, non-linting cloth and medium-binding materials ready in order to collect or bind leaking hydraulic fluid. Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
- Page 27 At the connection surface of the control cover, a locating pin has been attached preventing the incorrect attachment of the control cover on the valve installation surface. RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG...
- Page 28 The specified tightening torques were calculated with total friction coefficient μ = 0.09 ... 0.14; In case of changed surfaces, they are to be adjusted. The specified tightening torques stated are guidelines when using screws with the specified friction coefficients and when using a manual torque wrench (tolerance ±10%). Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
- Page 29 Assemble the modified mounting screw (2), see chapter 7.7.2 "Assembly steps for the control cover". Thread the sealing wire (3) through capstan head screw (4) and mounting screw (2) and subsequently grout the two wire ends with the lead seal (1). RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG...
- Page 30 12 "Connection thread for optional T port". Make sure that the line is correctly tightened. Table 12: Connection thread for external tank port (T) Valve type Connection thread LFA32DBW.-7X/...E G 1/4 LFA40DB(W).-7X/...E G 1/4 LFA50DB.-7X/...E G 1/4 LFA50DBW.-7X/...E G 3/8 LFA63DB(W).-7X/...E G 1/2 Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
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Page 31: Commissioning
• The released operating media and limitations of operation for your safety valve are hydraulic fluid contained in the data sheet. • Bosch Rexroth offers the suitable seal designs for the hydraulic fluid used. This information is also contained in the data sheet. Bleeding the hydraulic Bosch Rexroth recommends bleeding the entire hydraulic system. -
Page 32: Maintenance And Repair
Check the connection surface of the safety valve for the formation of corrosion. In the ongoing operation, corrosion may cause leakage. Remove the safety valve and have the contact surface concerned repaired if there is any visible corrosion. Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20... - Page 33 After unloading, the rotating spindle must be brought back into the initial position by means of the rotary knob. This is the only way to guarantee that the valve will still work with the response pressure pre-set by Bosch Rexroth. RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG...
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Page 34: Repair
In case of improper repair, the safety function of the safety valve is no longer given in subsequent operation. Only repair measures listed in chapter 10 "Maintenance and repair" are admissible. Only qualified personnel (see chapter 2.4 "Qualification of personnel") is authorized to repair the safety valve. Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20... -
Page 35: Spare Parts
Table 14: Spare part seal kit Valve type Material number Seal kit LFA32DB(W).-7X/.NE R961012400 LFA32DB(W).-7X/.FE R961012401 LFA40DB(W).-7X/.NE R961009425 LFA40DB(W).-7X/.FE R961009426 LFA50DB(W).-7X/.NE R961009427 LFA50DB(W).-7X/.FE R961009428 LFA63DB(W).-7X/.NE R961009429 LFA63DB(W).-7X/.FE R961009430 The spare parts are available from the address specified in chapter 16.1 "List of addresses". RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG... -
Page 36: Disassembly And Replacement
Remove the spring (see element 4, fig. 3). Remove the axial seal from the cartridge valve (see element 6, fig. 3). Only with NG32: Pull the upper part (ring) of the two-part socket out of the installation bore (see element 5, fig. 3) using a suitable tool. Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20... -
Page 37: Disposal
Please observe the following information for the environmentally-friendly disposal of the safety valve. 12.2 Return to Bosch Rexroth AG The hydraulic products manufactured by us can be returned to us for disposal purposes free of charge. There must be no inappropriate foreign substances or third-party components when products are returned. -
Page 38: Packaging
The materials for disposable packaging are mostly cardboard, wood, and expanded polystyrene. They can be recycled without any problems. Due to ecological reasons, disposable packaging should not be used for returning products to Bosch Rexroth. The valve insert is supplied in plastic packaging. - Page 39 – Was the safety valve or machine maintained and used as intended? – How did the fault become apparent? Try to get a clear idea of the cause of error. Ask the direct (machine) operator, if necessary. RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG...
- Page 40 Rotary knob is destroyed. Name plate is Replace the safety valve. missing or cannot be completely read. Setting certificate of Request the setting certificate from the testing authority the Bosch Rexroth Quality Assurance, is missing. see chapter 16.1 "List of addresses". Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
- Page 41 +49 (0) 9352/40 50 60 Email [email protected] Headquarters Bosch Rexroth AG Zum Eisengießer 1 97816 Lohr am Main Germany Phone +49 (0) 9352/40 30 20 Email [email protected] The addresses of our sales and service network and sales organizations can be found at www.boschrexroth.com/adressen RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG...
- Page 42 Internet www.boschrexroth.com In your request, please specify the order and serial number, the date of manufacture and the type designation of your valve. All these specifications are indicated on the name plate of the valve, see chapter 5.1 "Product identification". Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
- Page 43 Declaration of conformity 43/48 17 Declaration of conformity RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG...
- Page 44 ▶ E Environmental conditions Extension and modification ▶ F Functional safety ▶ I Intended use ▶ L List of addresses Locating pin ▶ M Material number ▶ O Order and serial number ▶ P Personal protective equipment Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
- Page 45 Index 45/48 RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG...
- Page 46 46/48 Index Bosch Rexroth AG, LFA...DB(W).-7X/...E, RE 21055-B/02.20...
- Page 47 Index 47/48 RE 21055-B/02.20, LFA...DB(W).-7X/...E, Bosch Rexroth AG...
- Page 48 Bosch Rexroth AG Zum Eisengießer 1 97816 Lohr am Main Germany Tel: +49 (0) 9352/40 30 20 [email protected] www.boschrexroth.com Subject to change without notice Printed in Germany RE 21055-B/02.20...