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It covers specifications, installation, commissioning, and maintenance procedures, including troubleshooting from a user perspective. The manual also describes safety precautions, usage limitations, and the styling conventions for Warning/Danger/Caution and Note sections. 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Ltd.  \nThe content in this document is subject to change without notice. All rights, including rights of translation, reproduced by printing, copying or similar methods, and even of parts, are reserved. Violators will be liable for damages. All rights, including rights deriving from patent license or registration of a utility model or design, are reserved. No part of this document may be reproduced or transmitted in any form or by any means without the prior written consent of Vertiv Co. Ltd.  \nNotice  \nThe purchased products, services, and features are stipulated by the contract made between Vertiv Co., and the customer. All or part of the products, services, and features described in this document may not be within the purchasing scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided “AS IS” without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure the accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.  \nVertiv Co., Ltd.  \nChina  \n[Homepage:](Homepage: www.vertiv.com)[ www.vertiv.com](Homepage: www.vertiv.com)  \nE-mail: [support@vertiv.com](support@vertiv.com)  \nCustomer service hotline: 4008876510  \nAsia Pacific  \n[Homepage:](Homepage: www.vertiv.com)[ www.vertiv.com](Homepage: www.vertiv.com).  \n[E-mail:](E-mail: overseas.support@vertiv.com)[ ](E-mail: overseas.support@vertiv.com)[overseas.support@vertiv.com](E-mail: overseas.support@vertiv.com)  \nFor Technical Support, users may contact the nearest Vertiv Co. local sales office or service centre.  \nPurpose of the Document  \nThis document applies to the series of precision air conditioners and cooling solutions which maintain optimal environmental control of technological ecosystems at minimal operating costs. This document gives an overview of the specifications, installation, commissioning, and maintenance procedures with troubleshooting from the user perspective. The figures used in this document are for reference only.  \nPlease read this manual carefully before installing, maintaining, and troubleshooting.  \nVertiv ™ Liebert® DM precision CRAC is a professional device, only professionals are permitted to access the unit and is kept in a place where access is restricted to common people.  \nStyling used in this Guide  \nThe styles used in the manual will be defined as mentioned in the following table:  \n\n| Situation | Description |\n| --- | --- |\n| Warning/Danger/Caution\u003Cbr>| • The Warning/Danger/Caution note indicates a hazardous or potentially harmful situation that can result in death or injury. It also indicates instructions that need to be adhered to, failing which may result in danger and safety issues thereby having an adverse effect on the reliability of the device and security. Even for practices not related to physical injury, to avoid equipment damage, performance degradation, or interruption in service, follow the warning instruction, carefully. |\n| Note\u003Cbr>| • The Note section indicates additional and useful information. It also calls attention to best practices and industry-best protocols that are standardized and help make maximum utilization of the resources at hand. Helpful information related to the product also comes under the Note heading, helping the users with the definitions, concepts, and terminologies used in the manual. |\n\nVersion History  \n\n| Product Name | AC BOM No. | EC BOM No. | Relese Date | Revision No. |\n| --- | --- | --- | --- | --- |\n| DME07 | 01306112 & 13 | 01306114 & 15 | 13/09/2021 | V2 |\n| DME12 | 01306122 & 23 | 01306124 & 25 | 13/09/2021 | V2 |\n| DME17 | 01303763 to 65 | -- | 13/09/20","cbCaio2QUSjwBylm","https://ap.wps.com/l/cbCaio2QUSjwBylm","pdf",17034697,134,"English","# Purpose of the Document\n# Styling used in this Guide\n# Version History\n# Safety Precautions and Measures","[{\"question\":\"What is the document purpose for Liebert DM precision air conditioners?\",\"answer\":\"It provides an overview of specifications, installation, commissioning, and maintenance procedures, with troubleshooting from the user perspective.\"},{\"question\":\"Who is allowed to access and operate the Liebert DM precision CRAC unit?\",\"answer\":\"Access to the unit is restricted to professionals only, and the unit should be kept in a place with restricted access.\"},{\"question\":\"What safety precautions should users follow before installation or maintenance?\",\"answer\":\"Users must read and consider all precautions and safety measures, adhere to all warnings and cautionary measures, and ensure maintenance is done only by qualified personnel after switching off the unit and managing electrical safety risks.\"}]","Liebert - DM - Precision Air Conditioning User Manual | PDF",1792887314,338]