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Contents Preface. 3 Important information. 4 Safety instructions. 4 Before installation, reinstallation or troubleshooting. 6 Before start-up. 6 During operation. 6 Misc. 6 Only for EU markets. 7 Only for Non EU markets. 7 Repairs. . 8 Misc. on the TD3 TWINDRIVE® system. 9 Description of the TD3 TWINDRIVE® system. 9 Connections. 10 Mains inlet. 10 Cable relief. 11 Mounting guidelines for the TWINDRIVE. 12 Functional description. 13 Start-up - How to install the RF handset. 14 Connections of LA27 actuators. 15 Child lock function - only for HB20RF. 16 Frequency tuning (FT). 17 Disturbance of RF signals. 18 Massage systems. 19 Mounting instructions for the massage motor . 23 Accessories . 25 Changing of batteries. 26 Emergency lowering function: (optional). 26 Welding the twist bracket on the frame . 28 Labels . 29 Disposal of LINAK products. 30 Disposal of batteries. 31 Drawing appendix. 32 Manufacturer’s declaration. 37 Addresses. 40 Page 2 of 40

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Preface Dear User, We are delighted that you have chosen a product from LINAK®. LINAK systems are high-tech products based on many years of experience in the manufacture and development of actuators, electric control boxes, controls and chargers. This User Manual does not address the end-user. It is intended as a source of information for the manufacturer of the equipment or system only, and it will tell you how to install, use and maintain your LINAK electronics. It is the responsibility of the manufacturer of the end-use product to provide a User Manual where relevant safety information from this manual is passed on to the end-user. We are sure that your LINAK product/system will give you many years of problem-free operation. Before our products leave the factory they undergo full function and quality testing. Should you nevertheless experience problems with your LINAK product/system, you are always welcome to contact your local dealer. LINAK subsidiaries and some distributors situated all over the world have authorised service centres, which are always ready to help you. LINAK provides a warranty on all its products. This warranty, however, is subject to correct use in accordance with the specifications, maintenance being done correctly and any repairs being carried out at a service centre, which is authorised to repair LINAK products. Changes in installation and use of LINAK products/systems can affect their operation and durability. The products are not to be opened by unauthorised personnel. The User Manual has been written based on our present technical knowledge. We are constantly working on updating the information and we therefore reserve the right to carry out technical modifications. LINAK A/S Page 3 of 40

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