Related Manuals for Bosch Rexroth DB 52 3X E Series
Summary of Contents for Bosch Rexroth DB 52 3X E Series
- Page 1 Pressure relief valve, pilot-operated (Safety valve according to Pressure Equipment Directive 2014/68/EU) Type DB(W)52...3X/..E Replaces: 09.17 Operating instructions English RE 25850-B/02.19 Mat. no. R901441999...
- 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 NL: U mag het product pas in bedrijf stellen, als deze bedieningshandleiding voor u beschikbaar is in een voor u begrijpelijke, officiële taal van de EU en als u de inhoud daarvan begrepen heeft. Is dit niet het geval, neem dan a.u.b. contact op met uw Bosch Rexroth contactpersoon of de servicepartner.
- 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
Operation with counter pressure in the discharge line Operating the optional manual override at the directional valve Maintenance and repair 10.1 Cleaning and care 10.2 Inspection and maintenance 10.3 Repair 10.4 Spare parts Disassembly and replacement Disposal RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... - Page 6 6/52 12.1 Environmental protection 12.2 Return to Bosch Rexroth AG 12.3 Packaging 12.4 Materials used 12.5 Recycling Extension and modification Troubleshooting 14.1 How to proceed for troubleshooting 14.2 List of addresses Declaration of conformity Alphabetical index Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19...
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Page 7: About This Documentation
The described hazard avoidance measures must be observed. RE 25850-B/02.19, DB(W)52...3X/..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, DB(W)52...3X/..E, RE 25850-B/02.19...
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Page 9: Safety Instructions
The factory corrosion protection is sufficient if the valve is stored under the stated conditions and if no condensate or leakage water may enter the safety valve. The safety valve may only be operated with the hydraulic fluids stated in "Data sheet 25850". RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 10: Improper 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 the 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
Do not use the safety valve in areas with open fire and only at a sufficient distance to hot heat sources. Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... - Page 13 Contact with salt water leads to increased corrosion at the safety valve. Thus, mounting screws and plug screws as well as movable components may be chemically corroded and damaged. So take suitable corrosion protection measures. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG...
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Page 14: Personal Protective Equipment
2.8 Obligations of the machine end-user The operator 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 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 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 16: Scope Of Delivery
Check the scope of delivery for possible transport damage, see chapter 6 "Transport and storage". In case of complaints, please contact Bosch Rexroth AG, see section 14.2 "List of addresses". Valve mounting screws are not included in the scope of delivery; they can, however, be ordered separately. -
Page 17: Product Identification
/1 – x. Alternatively, the CE mark may also be embossed at the valve body. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 18: Component Marking
To ensure that this increase in system pressure caused by the flow does not exceed 10% of the set response pressure, the admissible flow has to be reduced dependent on the counter pressure in the discharge line (port T) (see "Data sheet 25850"). Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... -
Page 19: Transport And Storage
Transport and storage 19/52 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
• Use textile attachment devices according to DIN EN 1492-2. More information regarding the transport is available from Bosch Rexroth. More information regarding the transport using chain hoists is also available in the data sheet 07600-B, chapter 6 "Transport and storage". -
Page 21: Assembly
Major potential differences! Danger of destroying the valve electronics by connecting or disconnecting plug-in connectors under voltage. De-energize the relevant part of the system before assembling the device or when connecting and disconnecting connectors. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 22: Unpacking
7.4 Necessary tools 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. Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... -
Page 23: Accessories
Improperly mounted valve mounting screws may become loose during subsequent operation and fly around due to the pressure and thus cause serious injuries. Only pressurize your system after all valve mounting screws have been completely and properly mounted according to the specifications. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... - Page 24 The value for the maximum admissible flow which is specified for the relevant safety valve in the technical data must always be higher than the maximum possible flow of the system at the selected response pressure. See also "Data sheet 25850". Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19...
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Page 25: Assembly Of Valves For Subplate Mounting
Tighten them crosswise using a suitable manual torque wrench. For the tightening torques, please refer to the table further down. Please note that the tightening torques may change if other screw types are used. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 26: Assembly Of Valves With Flange Connection
Tighten them crosswise using a suitable manual torque wrench. For the tightening torques, please refer to table 12. Please note that the tightening torques may change if other screw types are used. Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... - Page 27 Property class according to EN ISO 4762 10.9 Tightening torque 1)2) , related to the max. operating 210 Nm pressure Number of valve mounting screws Friction coefficient µ = 0.09 to 0.14 See "Data sheet 45501" RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG...
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Page 28: Additional M Port
DB(W)52...3X/..E Fitting of hydraulic connections, valves with pipe thread according to EN ISO 228 Part 1 Tightening torque , related to the max. operating 225 Nm pressure Friction coefficient µ = 0.09 to 0.14 Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... -
Page 29: Connecting The Power Supply (Only With Type Dbw52
Before installation works, separate the device from the mains or from the voltage source or de-energize it. Do not plug in or pull the electric plug-in connector as long as the voltage supply is activated. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 30: Commissioning
Make sure that all hydraulic connections are covered. Commission the safety valve only if it is completely installed. Immediately depressurize the system if hydraulic fluid still leaks despite proper assembly and continue with chapter 14 "Troubleshooting". Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... -
Page 31: Operation
• The released operating media and limitations of operation for your safety valve are hydraulic fluid contained in "Data sheet 25850". • Bosch Rexroth offers the suitable seal designs for the hydraulic fluid used. Bleeding the hydraulic system Observe the operating instructions of the system into which the valve is installed. -
Page 32: General Information On The Operation
Tighten the lock nut clockwise using a manual torque wrench with an accuracy of ± 10% and the tightening torque indicated in the table. Table 15: Information on the lock nut Valve type + size DB(W)52...3X/..E Wrench size Tightening torque 10 +5 Nm Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... -
Page 33: Operation With Counter Pressure In The Discharge Line
When the flow approaches zero, the maximum admissible counter pressure p in each case 10% of the response pressure. With increasing flow, the maximum admissible counter pressure p decreases. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... - Page 34 Flow of the system / accumulator to be secured: q = 500 l/min Vmax already existing Safety valve set to: p = 210 bar characteristic curve See arrows in diagram: (500 l/min; 210 bar) = 10 bar Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19...
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Page 35: Operating The Optional Manual Override At The Directional Valve
The manual override is not suitable for frequently recurring manual operations! Remove the protective cap. Use a rounded tool with a maximum diameter of 5 mm to push the manual override in the direction of the valve housing. Re-attach the protective cap. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 36: Maintenance And Repair
Do not use linting fabric for cleaning. Ensure that no cleaning agents are able to penetrate the hydraulic system. Flush the hydraulic system if necessary. Replace the fluid filter or the hydraulic fluid. Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... - Page 37 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.
- Page 38 Depressurize the test stand (verify by means of pressure gauge) so that the valve can be removed in a risk-free manner. Remove the valve from the test stand and assemble it on the system considering the necessary tightening torques. Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19...
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Page 39: Repair
As a precaution, exchange seals at reasonable time intervals. If hydraulic fluid 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. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 40: Spare Parts
Table 20: Spare part seal kit DB(W)52...3X/..E Seal material Seal directional spool valve R900357573 R900357574 Seal DB(W)52...3X/..E R961002371 R961002372 Seal measuring port R900012475 R900012509 The spare parts are available from the address specified in chapter 14.2 "List of addresses". Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... -
Page 41: Disassembly And Replacement
Close the connection and/or installation bore or threaded connections of the valve installation surface in order to avoid contamination of the system. In case of new installation and/or exchange of the safety valve, the following steps are analog to chapter 7 "Assembly". RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 42: 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 screw-in cartridge valve is delivered in a plastic packaging. -
Page 43: Recycling
– Was the safety valve or machine used as intended? – How did the fault become apparent? Try to get a clear idea of the cause of the error. If necessary, ask the actual (machine) operator. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... - Page 44 Check whether the system can be operating pressure and operated at lower operating pressure response pressure of the safety or select and order a safety valve with valve is too small. suitable response pressure. Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19...
- Page 45 Name plate is Replace the safety valve. missing or cannot be completely read. Setting certificate of Request the setting certificate from the the testing authority Bosch Rexroth Quality Assurance, see is missing. chap. 14.2. RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG...
- Page 46 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, DB(W)52...3X/..E, RE 25850-B/02.19...
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Page 47: List Of Addresses
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. 5.1.1 "Name plate DB52...3X/..E and DBW52...3X/..E". RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... -
Page 48: Declaration Of Conformity
48/52 Declaration of conformity 15 Declaration of conformity Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19... -
Page 49: Alphabetical Index
▶ T Installation position Test pressure Intended use Tools Transport ▶ L Transport damage Lifting gear Troubleshooting Limitations of use ▶ U ▶ M Unloading Maintenance Maintenance interval ▶ W Manual override Warranty Modification RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG... - Page 50 50/52 Declaration of conformity Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19...
- Page 51 Declaration of conformity 51/52 RE 25850-B/02.19, DB(W)52...3X/..E, Bosch Rexroth AG...
- Page 52 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 25850-B/02.19...