Bosch rexroth WE6 6XD Series Operating Instructions Manual

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Directional spool valves,

direct operated, with solenoid

actuation

(Area of application according to explosion protection Directive 2014/34/

EU: I M2, II 2G)

Type WE6..6X/...XD...

(IECEx certificate of conformity of

(IECEx Konformitätsbescheinigung

the valve solenoid)

des Ventilmagneten)

Operating instructions

RE23178-XD-B/11.21

Replaces: 06.20

Document no.: RA78485670_AC

English

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Summary of Contents for Bosch rexroth WE6 6XD Series

Page 1 Directional spool valves, direct operated, with solenoid actuation (Area of application according to explosion protection Directive 2014/34/ EU: I M2, II 2G) Type WE6..6X/...XD... Replaces: 06.20 Operating instructions Document no.: RA78485670_AC (IECEx certificate of conformity of (IECEx Konformitätsbescheinigung RE23178-XD-B/11.21 English the valve solenoid) des Ventilmagneten)
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.
Page 5 Maintenance and repair 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 RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 6 6/48 12.5 Recycling Extension and modification Troubleshooting 14.1 How to proceed for troubleshooting Technical data Appendix 16.1 List of addresses Declaration of conformity 17.1 EU declaration of conformity according to ATEX Directive 2014/34/EU Index Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 7 "Product-specific safety instructions" and in chapter 3 "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. RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 8 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 International Electrotechnical Commission Rexroth document in English language Ingress protection class of electric operating equipment Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 9 The valve may only be operated in a technically perfect condition and used as described in these operating instructions. The connection conditions, application conditions and performance data defined in these operating instructions must not be changed. RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 10 • 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, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 11 • Understanding of the additional importance of work authorization systems and safe electrical isolation with regards to 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 • 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 Explosion hazard by opening the cover while the valve is energized. The cover of the terminal box closes the flameproof enclosure. ▶ Do not open the cover of the terminal box until the valve is de-energized and depressurized and no explosive atmosphere is present. RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 14 ▶ Only use the valve within the intended IP protection class or lower. ▶ Before the assembly, ensure that all seals and caps of the plug-in connections are tight and intact. Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 15 Pressure peaks in the joint return line of more than one valve may cause an unintended movement of the control spool and thus unintended switching processes. This particularly holds true when valves with detent are used. It is recommended to use separate return lines. RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 16 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 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. RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 18 ▶ 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 - for the type of protection of the mechanical part according to EN 80079-36 Other mark - according to ATEX Directive 2014/34/EU - for the type of protection of the mechanical part according to EN 80079-36 Bosch Rexroth data matrix code Mark for customer/factory specific information Bosch Rexroth QR code RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 20 Table 6: Information on the name plate Type of information Name/logo of the valve solenoid manufacturer Address of the valve solenoid manufacturer Internal identification number Bosch Rexroth material number Explosion protection mark Nominal input voltage Nominal input current EU type examination certificate number for the valve solenoids CE mark and identification of notified body Mark according to ATEX Directive 2014/34/EU and mark for the type of protection...
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. RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 22 Danger of cut injuries! ▶ Wear suitable protective equipment for the transport of the safety valve. Further information regarding transport is available from Bosch Rexroth, see chapter 16.1 "List of addresses". Report any transport damage to your responsible sales contact person within one week. The addresses of the sales subsidiaries can be found on the Internet on: 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".
Page 24 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 23178-XD". Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 25 In order to assemble the valve, you need standard tools only. 7.6 Required accessories The following accessories are recommended for the connection of the valve. These accessories are not included in the scope of delivery and can be ordered separately from Bosch Rexroth: Valve mounting screws Table 8: Valve mounting screws Type...
Page 26 ▶ 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, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 27 If the valve is to be used at a reduced maximum pressure and in this connection is to be mounted on connection surfaces of a different material, it might be necessary to use a lower tightening torque in order to exclude any damage. RE23178-XD-B/11.21, WE6..6X/...XD..., 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, WE6..6X/...XD..., RE23178-XD-B/11.21...
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 armoring. For information on the prescribed pre-fuse, refer to "Data sheet 23178-XD". RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 30 For the position of the connection, see fig. 4. Connection of the valve solenoid is polarity-independent. Observe the information in EN 60079-38 for the connection and operation of electrical devices and components Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 31 (fig. 4) will create a pressure-resistant gap. To ensure explosion protection, these gaps may not be modified. No damage, contamination and coloring is admissible on surfaces forming a pressure-resistant gap. Connecting connection lines to valve solenoids with terminal box Fig. 4: Cable and line entry RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 32 – a) Make sure that the seal rings (2, 7) are untensioned. If required, loosen the locking ring (4), the body (5) and the outer grommet nut (8). If you Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 33 Tighten the mounting screws with the spring washers diagonally, one after the other. Tightening torque of the cover screws: 2...2.2 Nm. When replacing the cover mounting screws, only the screws supplied in the spare parts kit (seal kit terminal box) may be used, see chapter 10.6 "Spare parts". RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 34 ▶ Replace damaged connection lines. Checking electrical ▶ Check the inside of the terminal box for corrosion. In case of visible corrosion, connections do not install the valve. Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 35 Ensure that no hydraulic fluid leaks at the valve and the connections during operation. ▶ Check for internal leakage. The check must be carried out according to the possibilities present at the hydraulic system. Internal leakage can be valve-specific but does not necessarily affect the functionality of the valve. RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 36 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. Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 37 Damage to the hydraulic system and seals! A high-pressure washer's water pressure could damage the hydraulic system and the seals of the valve. The water displaces the hydraulic fluid from the hydraulic system and seals. ▶ Do not use a high-pressure washer for cleaning. RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 38 Check the gap areas (pressure-resistant gap) between the terminal box and cable and line entry. No damage, contamination and coloring is admissible on surfaces forming a pressure-resistant gap (see fig. 4). If threads of adapters and solenoid housings are damaged, replace the valve. Repairs are not admissible. Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 39 (seal kit terminal box) may be used, see chapter 10.6 "Spare parts". 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 40 1 x O-ring for terminal box 1 x cable and line entry 4 x spring washers for the terminal box 4 x hexagon socket head cap screws for cover fastening For a valve with two valve solenoids, two spare part kits are required. Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 41 Use suitable tools to loosen the valve mounting screws of the valve. Remove the valve mounting screws and remove the valve from the mounting surface. Collect escaping hydraulic fluid in the provided container and dispose of it properly. RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 42 Upon request, reusable systems can be used for regular deliveries. 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. Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 43 Extension and modification 43/48 12.4 Materials used Hydraulic components from Bosch Rexroth do not contain any hazardous materials that could be released during intended use. Normally, no unfavorable effects on human beings and on the environment have to be expected. The valves basically comprise of: •...
Page 44 In case of faults caused by contamination, it is important to check the oil quality in addition to the repair and improve it, if necessary, by suitable measures such as flushing or additional installation of filters. 15 Technical data For the technical data of your valve please refer to "Data sheet 23178-XD". Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 45 +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 RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...
Page 46 46/48 Declaration of conformity 17 Declaration of conformity 17.1 EU declaration of conformity according to ATEX Directive 2014/34/EU Bosch Rexroth AG, WE6..6X/...XD..., RE23178-XD-B/11.21...
Page 47 Transport and storage Troubleshooting ▶ I Improper use ▶ U Information Unpacking Inspection Installation conditions ▶ V Intended use Validity of the documentation Valve insert ▶ L Valve subplate List of addresses ▶ M Maintenance Maintenance schedule Manual override RE23178-XD-B/11.21, WE6..6X/...XD..., Bosch Rexroth AG...

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