Table of Contents
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4/2 and 4/3 directional valves,
internally pilot-operated,
externally pilot-operated
(Area of application according to the Explosion Protection Directive
2014/34/EU: II 2G)
Type H-4WEH...XE...
(IECEx Konformitätsbescheinigung
(IECEx certificate of conformity of
des Ventilmagneten)
the valve solenoid)
Operating instructions
RE24751-XE-B/10.19
Replaces: 04.16
Document no.: RA78498376_AA
English
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Table of Contents
Related Manuals for Bosch Rexroth H-4WEH XE Series
Summary of Contents for Bosch Rexroth H-4WEH XE Series
- Page 1 4/2 and 4/3 directional valves, internally pilot-operated, externally pilot-operated (Area of application according to the Explosion Protection Directive 2014/34/EU: II 2G) Type H-4WEH...XE... Replaces: 04.16 Operating instructions Document no.: RA78498376_AA (IECEx Konformitätsbescheinigung (IECEx certificate of conformity of RE24751-XE-B/10.19 English des Ventilmagneten) the valve solenoid)
- 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 Maintenance schedule 10.4 Repair 10.5 Rectifying external leakages 10.6 Spare parts Disassembly and removal Disposal 12.1 Environmental protection 12.2 Return to Bosch Rexroth AG 12.3 Packaging 12.4 Materials used 12.5 Recycling RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... - Page 6 6/52 Extension and modification Troubleshooting 14.1 How to proceed for troubleshooting Technical data Appendix 16.1 List of addresses Declaration of conformity Index Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
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Page 7: About This Documentation
"General information on damage to property and damage to product" and whenever a sequence of actions or instructions is explained which bear the danger of personal injury or damage to property. The hazard avoidance measures described must be observed. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... - Page 8 The numbers indicate that the actions must be carried out one after the other. 1.3.3 Abbreviations The following abbreviations are used in this documentation: Table 4: Abbreviations Abbreviation Meaning ATEX EU Directive for Explosion Protection (Atmosphère explosible) European Standard International Organization for Standardization Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
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Page 9: Safety Instructions
Details about the device group, category, temperature class and equipment protection level (EPL) in accordance with ATEX Directive 2014/34/EU and the derived standards are provided in "Data sheet 24751-XE" under "Information on explosion protection" and on the name plate of the valve. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... -
Page 10: Improper Use
• Non-compliance with the specified performance limits Changes and/or modifications to the valve are not admissible, refer to chapter 13 "Extension and modification". Bosch Rexroth AG does not assume any liability for damage caused by improper use. The user assumes all risks involved with improper use. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19... -
Page 11: Qualification Of Personnel
• Understanding of the additional importance of work permit systems and safe electrical separation regarding explosion protection. 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... -
Page 12: General Safety Instructions
• Only use original Bosch Rexroth accessories and spare parts in order to prevent any hazard to persons due to unsuitable spare parts. • Comply with the technical data and environmental conditions specified in the product documentation. -
Page 13: Product-Specific Safety Instructions
▶ Ensure before working at the hydraulic product that the hydraulic system is depressurized and the electrical control de-energized. ▶ Completely unload the pressure at machines and systems before working at the valve. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... - Page 14 To prevent the valve from becoming loose and causing a risk of injury: ▶ Exchange the valves with corrosion damages as soon as possible. ▶ Check the surface protection on the valve and the valve mounting screws at regular intervals. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
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Page 15: Notices On The Valve Use
However, additional external switching measures have to be taken, if required, in order to avoid connected electric circuits being influenced by the residual voltage peak. The values for the residual voltage peak depend on the valve solenoid used, see the "Data sheet 24751-XE". RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... -
Page 16: Personal Protective Equipment
The machine end-user of the Bosch Rexroth valve is responsible that • the valve is only being used according to the intended use as defined in these operating instructions. -
Page 17: General Information On Damage To Property And Damage To Product
Ensure that no cleaning agents are able to penetrate the hydraulic system. Environmentally harmful hydraulic fluid 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. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... -
Page 18: 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 chapter 16.1 "List of addresses". Accessories such as valve subplates and valve mounting screws are not included in the scope of delivery and must be ordered separately. See chapter 7.6 "Required accessories". - Page 19 Name and address of the manufacturer Customer's or production order number Customer material number or additional information CE mark Explosion protection mark Mark - according to ATEX Directive 2014/34/EU - for the type of protection of the mechanical part according to EN 80079-36 Rexroth QR code RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG...
- Page 20 Data matrix code of the valve solenoid manufacturer Depending on valve sizes and configuration of the solenoid coils, higher ambient temperatures up to 70 °C are admissible. Also observe the "Special application conditions for safe application" in "Data sheet 24751-XE". Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
- Page 21 Corresponds to zone 21 according to Directive 1999/92/EC. High safety level. Potentially explosive atmospheres where an explosive atmosphere due to stirred dust (= device group II) is normally not present or occurs only rarely or short-time. Corresponds to zone 22 according to Directive 1999/92/EC. Normal safety level. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG...
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Page 22: Transport And Storage
Danger of cut injuries! ▶ Wear suitable protective equipment for the transport of the valve. Further information regarding transport is available from Bosch Rexroth, see chapter 16.1 "List of addresses". Notify your responsible sales contact person any transport damage within one week. The addresses of the sales subsidiaries can be found on the Internet at: http://www.boschrexroth.com/adressen... - Page 23 12 months After expiry of the maximum storage time, we recommend having the valve checked by your competent Bosch Rexroth service. In case of questions regarding spare parts, please contact the Bosch Rexroth service responsible for your valve, see chapter 10.6 "Spare parts".
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Page 24: Assembly
It is imperative to provide for absolute cleanliness. The valve must be protected from dirt during installation. Contamination of the hydraulic fluid may considerably reduce the life cycle of the valve. ▶ Observe the installation position specified in "Data sheet 24751-XE". Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19... -
Page 25: Prior To Assembly
Subplates with dimensions for valves with porting pattern according to ISO 4401 are listed in the "Data sheet 45100". Ordering address for The address of our responsible sales organizations can be found on the Internet on accessories and valves www.boschrexroth.com and in appendix 16.1 "List of addresses". RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... -
Page 26: Assembling The Valve
▶ Do not remove the protective caps of the valve until assembly. ▶ After disassembly, seal the hydraulic fluid bores with suitable cap elements. ▶ Immediately remove hydraulic fluid that has leaked out. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19... - Page 27 Number of valve with admissible tolerance mounting screws NG10 M6 x 45 - 10.9 12.5 Nm ±10 % NG16 M10 x 60 - 10.9 58.0 Nm ±10 % M6 x 60 - 10.9 12.5 Nm ±10 % NG25 M12 x 60 - 10.9 100.0 Nm ±10 % NG32 M20 x 80 - 10.9 340.0 Nm ±10 % RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG...
- Page 28 Mark all checked fittings, e.g. using a permanent marker. Make sure that all pipes and hose lines and every combination of connection pieces, couplings or connection points with hoses or pipes are checked for their operational safety by a person with appropriate knowledge and experience. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
- Page 29 The use of connection lines with shielding or sheathing can lead to potential backfeeding and is thus an explosion hazard! ▶ Only use connection lines without shielding or sheathing. For information on the prescribed pre-fuse, refer to "Data sheet 24751-XE". RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG...
- Page 30 15 cm of the cable and line entry. Connection of the valve solenoid is polarity-independent. Valve solenoids for connection to alternating voltage have a bridge rectifier which is integrated in the vale solenoid. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
- Page 31 Open the terminal box (internal hexagon, wrench size 3) Remove the outer sheath of the connection line and the insulation of the individual conductors. Press the wire end ferrules to the individual conductors. For the stripping lengths, refer to fig. 5 and table 10. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG...
- Page 32 Connection for protective grounding conductor 1.0...1.2 Nm Connection for potential equalization conductor 2.0...2.4 Nm Assemble the cover with the sealing device underneath. Tighten the mounting screws with their spring washers diagonally, one after the other. Tightening torque of the cover screws: 1...1.1 Nm. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
- Page 33 Assemble the O-ring onto the pole tube and slide it forward up to the solenoid coil. Re-tighten the mounting nut of the valve solenoid (hexagon nut, wrench size 32, tightening torque 4 + 1 Nm). Afterwards, there must be no visible gap between the solenoid coil and the valve housing. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG...
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Page 34: Commissioning
Checking the connection line ▶ The connection line must be checked for proper condition by or under the guidance and supervision of a specialized electrician before the initial commissioning or any re-commissioning. ▶ Replace damaged connection lines. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19... - Page 35 Check whether there is an internal leakage. The check must be carried out according to the possibilities present at the hydraulic system. An internal leakage can be valve-specific but does not necessarily affect the functionality of the valve. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG...
- Page 36 (internal hexagon, wrench size 5). Clockwise rotation extends the switching time. Counterclockwise rotation shortens the switching time. Hold the set screw (1) in position with the hexagon socket wrench and tighten the lock nut (2) with a tightening torque of 8 Nm ± 25 %. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
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Page 37: Operation
Only operate the manual override when the pressure in the tank channel does not exceed 50 bar. Above this pressure value, the actuating force to be applied is too large. ▶ Do not use sharp-edged tools to operate the manual override. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... -
Page 38: Maintenance And Repair
Check that all seals and caps of the plug-in connections are firmly fitted so that no humidity can penetrate the valve during cleaning. ▶ Remove external dirt and keep sensitive and important parts like valve solenoids clean. ▶ Remove dust and dirt accumulations on the valve at regular intervals. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19... -
Page 39: Inspection And Maintenance
In case of visible damage, remove the valve and have it repaired. Check all screws and connections for tight seat. Check all connection lines for damage. Replace the connection line if there is any visible damage. RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... -
Page 40: Maintenance Schedule
Tightening torque of the cover screws: 1...1.1 Nm. 10.3 Maintenance schedule Valves require low maintenance if used as intended. For a long and reliable operation of the valve, Bosch Rexroth recommends regularly checking the hydraulic system and the valve. 10.3.1 Checking for leakage Check the valve for leakage. -
Page 41: Repair
Table 13: Replacement FKM seal kit for the valve connection surface connection surface Valve type Material number H-4WEH10...V... R961001131 H-4WEH16...V... R961001256 H-4WEH25...V... R961001258 H-4WEH32...V... R961001260 Ensure the suitability of the sealing materials for the hydraulic fluid used! See "Data sheet 24751-XE". RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... - Page 42 In case of questions about spare parts, please contact your responsible Bosch Rexroth Service: Bosch Rexroth AG Service Hydraulics Bürgermeister-Dr.-Nebel-Str. 8 97816 Lohr am Main Tel: +49 (0) 9352/40 50 60 service@boschrexroth.de For the addresses of our sales and service network please refer to: www.boschrexroth.com/adressen Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
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Page 43: Disassembly And Removal
Close the hydraulic channels of the subplate (on the customer side) to avoid contamination. If the valve is exchanged, all further steps are analogous to mounting, see chapter 7 "Assembly". RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... -
Page 44: Disposal
The materials for disposable packaging are mostly cardboard, wood, and expanded polystyrene. They can be recycled without any problems. For environmental reasons, disposable packaging should not be used for returning products to Bosch Rexroth. 12.4 Materials used Hydraulic components from Bosch Rexroth do not contain any hazardous materials that could be released during intended use. -
Page 45: Recycling
– Have changes (e.g. refitting) or repair work been carried out at the overall system (machine/system, electrical systems, control) or at the valve? If so: What were they? – Was the valve and/or the machine used as intended? – How did the fault become apparent? RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG... - Page 46 Remove valve and replace it with a new one Following faults due to contamination, in addition to the repair, it is essential to check the oil quality and improve it, if necessary, by suitable measures such as flushing or the additional installation of filters. Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
- Page 47 +49 (0) 9352/40 50 60 Email service@boschrexroth.de Headquarters Bosch Rexroth AG Zum Eisengießer 1 97816 Lohr am Main Germany Phone +49 (0) 9352/40 30 20 Email my.support@boschrexroth.de The addresses of our sales and service network and sales organizations can be found at www.boschrexroth.com/adressen RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG...
- Page 48 48/52 Declaration of conformity 17 Declaration of conformity Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
- Page 49 List of addresses ▶ V Validity of the documentation ▶ M Valve insert Maintenance schedule Valve mounting screws 25, 42 Main valve Manual override Modification ▶ N Name plate ▶ O Obligations of the machine end-user Operation RE24751-XE-B/10.19, H-4WEH...XE..., Bosch Rexroth AG...
- Page 50 50/52 Index Bosch Rexroth AG, H-4WEH...XE..., RE24751-XE-B/10.19...
- Page 51 Index 51/52 RE24751-XE-B/10.19, H-4WEH...XE..., 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 RE24751-XE-B/10.19...