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Summary of Contents for Bosch Rexroth DBA 2X E Series
- Page 1 Pump safety block (Safety valve according to Pressure Equipment Directive 2014/68/EU) Type DBA...2X/...E Replaces 09.17 Operating instructions English RE25891-B/10.21 Mat. no. R901557896...
- 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
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 RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... - Page 6 6/52 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 Troubleshooting 14.1 How to proceed for troubleshooting 14.2 List of addresses Index Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21...
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Page 7: About This Documentation
The measures described for the prevention of dangers must be observed. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... - Page 8 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, DBA...2X/...E, RE25891-B/10.21...
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Page 9: Safety Instructions
The corrosion protection applied at the factory 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 25891". RE25891-B/10.21, DBA...2X/...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, DBA...2X/...E, RE25891-B/10.21... - 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. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG...
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Page 14: Personal Protective Equipment
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. RE25891-B/10.21, DBA...2X/...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". Accessories such as valve mounting screws are not included in the scope of delivery;... -
Page 17: Product Identification
If one production order comprises several identical safety valves, the same number may be assigned to all valves from this production order. The related setting certificate will then apply to all identical valves of this RE25891-B/10.21, DBA...2X/...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 25891". Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21... -
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
Components cannot be properly mounted or might be damaged. Make sure that the assembly space is sufficient. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... -
Page 22: Unpacking
It is imperative to provide for absolute cleanliness. The safety valve must be protected from dirt during installation. Contamination of the hydraulic fluid may considerably reduce the life cycle of the safety valve. 7.2.1 Installation position The installation position is not relevant. Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21... -
Page 23: Painting The Valve Housing
DBAE...2X/...E DIN EN 175301-803 Plastic R901017011 DBAEE...2X/...E DIN EN 175201-804 Plastic R900021267 Metal R900223890 For the mating connectors, respective cable sets with different cable lengths are available. For more details, refer to "Data sheet 08006". RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... - Page 24 Table 10: Valve mounting screws for high-pressure flanges type DBA...H...2X/...E Size Dimensions Material number LM10 x 95 R913015585 M12 x 105 R913000659 M14 x 105 R913000660 For more details on the valve mounting screws, refer to chapter 7.7 "Assembly of the safety valve". Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21...
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Page 25: Prior To Assembly
If the material number of the safety valve does not match the number in the order confirmation, contact the Rexroth service for clarification; for the address see chapter 14.2 "List of addresses". RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... - Page 26 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 25891". Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21...
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Page 27: Assembly Of The Safety Valve
If required, retrofit any missing seals. Carefully place the valve on the valve installation surface. See also "Data sheet 25891, unit dimensions, port P". Observe the porting pattern. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... - Page 28 M12 x 105 SAE 1 1/4" M14 x 105 at friction coefficient µ = 0.09...0.14 total T he tightening torques are guidelines for the specified friction coefficients and when using a manual torque wrench (tolerance ±10%). Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21...
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Page 29: Additional M Port
EN ISO 228 Part 1 G 1/4 30 ± 3 Nm G 1/4 30 ± 3 Nm G 1/4 30 ± 3 Nm Friction coefficient µ = 0.09 to 0.14 RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... -
Page 30: Connecting The Power Supply
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. Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21... -
Page 31: Commissioning
Commissioning of the safety valve requires basic hydraulic knowledge. Only qualified personnel (see chap. 2.4 "Qualification of personnel") is authorized to commission the safety valve. Make sure that all hydraulic ports are closed. Commission the safety valve only if it is completely installed. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... -
Page 32: Operation
• The released operating media and limitations of operation for your safety valve are hydraulic fluid contained in "Data sheet 25891". • 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 33: General Information On The Operation
When you screw out the valve spindle, the safety valve opens and limits the system pressure. Tighten the lock nut clockwise using a manual torque wrench with an accuracy of ± 10% and the tightening torque indicated in table 15. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... -
Page 34: Operation With Counter Pressure In The Discharge Line
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). Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21... - Page 35 Flow of the system / accumulator to be secured: q = 100 l/min Example with existing Vmax characteristic curve Safety valve set to: p = 315 bar DBA15...2X/...E See arrows in diagram: (100 l/min; 315 bar) = 15.75 bar RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG...
- Page 36 = 0 l/min) Tmax Table 19: Assignment characteristic curve - response pressure p Characteristic curve Response pressure p in bar Characteristic curves for intermediate values can be generated by interpolation. For further information, refer to chapter 9.3.1. Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21...
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Page 37: 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. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... -
Page 38: 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, DBA...2X/...E, RE25891-B/10.21... - Page 39 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 40 (1) rests against the valve body without any play. Hold the rotary knob (3) and tighten the lock nut (1) by means of a manual torque wrench applying the specified tightening torque by rotating it clockwise. Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21...
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Page 41: 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. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... -
Page 42: Spare Parts
Seal kit for the valve Table 22: Seal kit for the valve connection surface connection surface Valve type + size DBA...2X/...E R961011556 R961011557 The spare parts are available from the address specified in chapter 14.2 "List of addresses". Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21... -
Page 43: Disassembly And Replacement
Close the connection 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". RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... -
Page 44: 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 45: 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. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... - Page 46 The difference between 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, DBA...2X/...E, RE25891-B/10.21...
- Page 47 7.7 "Assembly of the port. The R-ring in the housing safety valve". connection surface is worn, see "Data sheet 25891". RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG...
- Page 48 Setting certificate of Request the setting certificate from the the testing authority Bosch Rexroth Quality Assurance, see is missing. chapter 14.2 "List of addresses". Other leakage at Valve elements attached to the Send valve to the authorized facility...
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Page 49: 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. “Product identification”. RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... - Page 50 50/52 Bosch Rexroth AG, DBA...2X/...E, RE25891-B/10.21...
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Page 51: 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 M port RE25891-B/10.21, DBA...2X/...E Bosch Rexroth AG... - Page 52 Bosch Rexroth AG Zum Eisengießer 1 97816 Lohr am Main Germany Tel: +49 (0) 9352/40 30 20 my.support@boschrexroth.de www.boschrexroth.com Subject to change without notice Printed in Germany RE25891-B/10.21...
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