Related Manuals for Bosch rexroth DB20K.1X E Series
Summary of Contents for Bosch rexroth DB20K.1X E Series
- Page 1 Pressure relief valve, pilot-operated (Safety valve according to Pressure Equipment Directive 2014/68/EU) Type DB20K.1X/...E Replaces: 09.17 Operating instructions English RE 25818-B/11.21 Mat. no. R901557891...
- Page 2 IT: La messa in servizio di questo prodotto può essere eseguita solo se si dispone del presente manuale d‘uso in una lingua ufficiale della UE conosciuta e se ne è stato compreso il contenuto In caso contrario rivolgersi al referente Bosch Rexroth o al punto di assistenza competente.
- Page 3 NO: Dette produktet må settes i drift først når denne bruksanvisningen foreligger på et offisielt EU-språk som er forståelig for deg, og du må også forstå innholdet i bruksanvisningen. Hvis dette ikke er tilfelle, kontakter du din kontaktperson i Bosch Rexroth eller ansvarlig servicesenter.
- Page 4 © This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent. The cover shows an example configuration. The product supplied may therefore differ from the figure shown.
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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 RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG... - Page 6 6/40 Troubleshooting 14.1 How to proceed for troubleshooting 14.2 List of addresses Alphabetical index Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21...
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Page 7: About This Documentation
The hazard avoidance measures described must be observed. RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG... - Page 8 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, DB20K.1X/...E, RE 25818-B/11.21...
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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 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG... -
Page 10: Intended Use
Changes at the product are only admissible within the scope specified in these operating instructions. Any safeguards fitted by Bosch Rexroth AG have to be present, properly installed and fully functional, unless this is not appropriate for setup or maintenance operation. -
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 training in specific fields. Please find an overview of the training contents on the Internet at: http://www.boschrexroth.de/didactic 2.5 General safety instructions... -
Page 12: Product-Specific Safety Instructions
Provide for a suitable touch guard. During operation, only touch the safety valve with heat-protective gloves. Allow the safety valve to cool down to room temperature before touching it directly with your hands during maintenance works. Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21... -
Page 13: Personal Protective Equipment
So take suitable corrosion protection measures. 2.7 Personal protective equipment The machine end-user must provide the personal protective equipment (such as gloves, working shoes, safety goggles, working clothes, etc.). RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG... -
Page 14: Obligations Of The Machine End-User
14/40 Safety instructions 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. • the operating personnel are instructed at regular intervals. -
Page 15: General Information On Damage To Property And Damage To The 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 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG... -
Page 16: Scope Of Delivery
Check the scope of delivery for completeness. 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 14.2 "List of addresses". 5 Product information For information on the performance and product description please refer to "Data sheet 25818"... -
Page 17: Product Identification
/1 – x. Alternatively, the CE mark may also be embossed at the valve body. RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG... -
Page 18: Component Marking
- pilot oil return external "Y" without counter pressure in the pilot oil return line: Admissible counter pressure in the discharge line (port T) < 10 bar. Table 8: Limitations of use Response pressure p in bar maximum flow q in l/min Vmax 30...60 61...110 111...210 211...315 316...350 Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21... -
Page 19: Transport And Storage
Transport and storage 19/40 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 20: Storing The Safety Valve
Rexroth service. In case of questions regarding spare storage time of 12 months parts, please contact the Rexroth service responsible for your safety valve, see chapter 14.2 "List of addresses". Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21... -
Page 21: Assembly
The response pressure has been set by the manufacturer and secured by means of lead seal and/or protective cap. Check whether the sealing and/or the protective cap is undamaged. Dispose of the packaging in accordance with the national conditions of your country. RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG... -
Page 22: Installation Conditions
Sharp edges! Safety valves may have sharp edges at the valve openings. During transport or assembly/disassembly, cutting or abrasive injuries may result. Wear corresponding protective clothing during transport. Do not reach into valve openings! Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21... - Page 23 See also "Data sheet 25818". Check whether the unit dimensions for the relevant type specified in "Data sheet 25818" correspond to the dimensions of the mounting cavity. RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG...
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Page 24: Assembly
Steel is to be assumed as valve material in this case. Secure safety valves against unauthorized removal from the mounting cavity by wire or seal. A bore is already provided for this in the valve hexagon. Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21... -
Page 25: Commissioning
Information for the hydraulic fluid contained in "Data sheet 25818". • Bosch Rexroth offers the suitable seal designs for the hydraulic fluid used. Bleeding the hydraulic Bleeding of the safety valve is usually not necessary. However, Bosch Rexroth recommends bleeding the entire hydraulic system. -
Page 26: Operation
Switch on the system and wait until the system pressure has built up. Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21... -
Page 27: Operation With Counter Pressure In The Discharge Line
As an alternative to the procedure described above, the safety valve may also be removed and set to the desired lower response pressure on a test stand. 9.3 Operation with counter pressure in the discharge line See chapter 5.2.1 "Limitations of use" RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG... -
Page 28: Maintenance And Repair
Check safety valve for external leakage, replace the seals if necessary, see chap. 10.3 "Repair". Check the safety valve for corrosion. Corrosion is an indication of leakage. Remove the safety valve and have it repaired if there is any visible corrosion. Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21... - Page 29 After unloading, the rotating spindle must be brought back into the initial position by means o 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.
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Page 30: Repair
For tightening torques, please refer to table 9. If oil continues to leak after re-installation of the safety valve, the safety valve itself is defective. In this case, send the safety valve to the manufacturer for repair. Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21... -
Page 31: Spare Parts
Prepare a container or a pan for collecting the leaking hydraulic fluid. Detach the safety valve using appropriate tools or screw it out of the mounting cavity. Collect any hydraulic fluid that might leak in the provided tank. Dispose of the hydraulic fluid properly. RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG... -
Page 32: Disposal
The materials for disposable packaging are mostly cardboard, wood, and 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 safety valve is delivered in a plastic packaging. -
Page 33: Materials Used
Extension and modification 33/40 12.4 Materials used Hydraulic components from Bosch Rexroth do not contain any hazardous materials that could be released during intended use. Normally, no adverse effects on human beings and on the environment have to be expected. - Page 34 Type DB20K1-1X/...E: Turn the hand wheel to the fixedly The hand wheel is not turned to set and sealed stop, see also the securely sealed stop. chapter 10.2.3 "Unloading safety valves of type DB20K1-1X/...E". Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21...
- Page 35 10.3 "Repair". Hand wheel is Transport damage, improper Send safety valve to the authorized destroyed. handling. facility for repair. Please contact your regional Bosch Rexroth representative. RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG...
- Page 36 Following faults due to contamination, it is moreover essential to check the quality of the hydraulic fluid and to improve it, if necessary, by suitable measures such as flushing or the additional installation of filters. Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21...
- Page 37 In your request, please specify the production number, the date of manufacture and the type designation of your safety valve. All these specifications are indicated on the name plate of the safety valve, see chap. “Product identification”. RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG...
- Page 38 Frictional value Functional safety ▶ H Hydraulic accumulator ▶ I Identification Installation conditions Installation position Intended use ▶ L Limitations of use ▶ M Maintenance interval ▶ O Order confirmation ▶ P Personal protective equipment Bosch Rexroth AG, DB20K.1X/...E, RE 25818-B/11.21...
- Page 39 Alphabetical index 39/40 RE 25818-B/11.21, DB20K.1X/...E, Bosch Rexroth AG...
- Page 40 Bosch Rexroth AG Zum Eisengießer 1 97816 Lohr am Main Germany Phone +49 (0) 9352 18-0 info@boschrexroth.de www.boschrexroth.com Subject to change without notice Printed in Germany RE 25818-B/11.21...