With a degree in engineering, developing a step-by-step process for HVAC energy optimization, comfort improvement and indoor air quality, for existing schools and commercial buildings, came naturally for this HVAC service and building automation contractor. With 35 + years'' experience in the industry, the author, Tom Olson, is convinced that over 75% of all HVAC maintenance requirements are simply keeping all system components clean, dry and lubricated. Further, no one is better capable of providing those services, at the lowest possible cost, than well-trained in-house personnel. However, the author''s experience is that most buildings are accomplishing less than 50% of all necessary services. The purpose of this book is to help in-house personnel, and their managers, better operate their facilities. The building block system suggested to optimize HVAC energy consumption, comfort and indoor air quality, is a simple six-step process:1. Fix what''s brokenIt''s impossible to provide the desired efficiency, comfort and indoor air quality with broken or damaged equipment. If it''s broken, it should be on a priority list for repair or replacement. This book will help you better understand what to look for and why the repairs are important.2. Clean what''s dirtyDirt and debris are your HVAC system''s biggest enemies. It causes premature equipment failure, inefficiencies, and indoor air quality related problems. Tom grew up in a family restaurant. His dad wouldn''t go to be until the kitchen was clean. So, when he joined the HVAC industry, the filth that he found was shocking! How can these systems possibly operate efficiently with all that dirt? Well, they can''t. This book spends a great deal of time talking about getting, and keeping, HVAC systems clean, including specific recommendations on air filters.3. Change methods of operations made possible, because the equipment is no longer broken and dirtyBuilding maintenance staff will be more productive, and efficient, when given the knowledge, and the time, to operate a facility free of broken and dirty equipment. Often times, however, they''ve never had an opportunity to operate a building free of such deficiencies. Methods of how to cover up for such deficiencies frequently just get passed from generation to generation. This book will help break that chain of events. 4. Temperature control system revisionsEnergy efficiency, comfort improvement and indoor air quality are not mutually exclusive terms. It is not necessary to sacrifice one to have the other two. Current, antiquated control sequences are often the root cause of preventing success in these areas. It is important to utilize proven, modern control sequences to eliminate simultaneous cooling and heating, including simultaneous atmospheric cooling and heating. If your mixed air temps are always 55�F, or 60�F, you''re providing costly, uncomfortable sequences of operation. ASHRAE has discouraged it since 1975! It''s time to stop. This book can help.5. Install new technology hardwareIn the hands of the right technician, there are few control sequences that pneumatic temperature control systems can''t accomplish. The problem is, those technicians are few and far between. It is frequently in your best, long-term interest to replace defective equipment, instead of investing in repairs of old, antiquated equipment. This applies to more than just pneumatic controls. Old boilers are another example of old equipment that have outlived their effectiveness. In many instances, there are new, unique and often low-cost equipment solutions. This book will share many ideas with you.6. Implement preventive maintenance routines Preventative maintenance is an area that should be incorporated throughout the six-step process. A good schedule of preventative maintenance is one of the most important factors in managing time and financial resources. Again, this book will help your in-house maintenance personnel become more self-sufficient.

When installing or servicing an air conditioning or refrigeration system, two of the most important tasks performed by technicians are refrigerant recovery and system evacuation. In order to perform these tasks properly, and in a safe manner, technicians need to understand the theory behind them, having a working knowledge of the equipment and tools used, and employ accepted industry best practices. This e-book walks through each step of both tasks, while covering safety, theory, and application. Also covered are leak detection methods and filter drier use. System Recovery and Evacuation was written by HVACR instructors for HVACR instructors to provide sound, relevant information in a single source. This e-book provides students and practicing technicians with the information and knowledge necessary to understand refrigerant recovery, system evacuation, leak detection, and filter driers. It is full of color illustrations and includes worksheets that provide students and practicing technicians with the information and knowledge necessary to accurately and safely install or service air conditioning and refrigeration systems. The end of the e-book contains fill-in-the-blank questions that review the content of the entire manual.

In two freestanding volumes, the Textbook of Neural Repair and Rehabilitation provides comprehensive coverage of the science and practice of neurological rehabilitation. Revised throughout, bringing the book fully up to date, this volume, Neural Repair and Plasticity, covers the basic sciences relevant to recovery of function following injury to the nervous system, reviewing anatomical and physiological plasticity in the normal central nervous system, mechanisms of neuronal death, axonal regeneration, stem cell biology, and research strategies targeted at axon regeneration and neuron replacement. New chapters have been added covering pathophysiology and plasticity in cerebral palsy, stem cell therapies for brain disorders and neurotrophin repair of spinal cord damage, along with numerous others. Edited and written by leading international authorities, it is an essential resource for neuroscientists and provides a foundation for the work of clinical rehabilitation professionals.

This Ebook is dedicated to those who are eager to learn the HVACR Trade and Refrigerant Charging/Troubleshooting Practices. In this book, you will find Step by Step Procedures for preparing an air conditioning and heat pump system for refrigerant, reading the manifold gauge set, measuring the refrigerants charge level, and troubleshooting problems with the system's refrigerant flow. This book differs from others as it gives key insights into each procedure along with tool use from a technician's perspective, in language that the technician can understand. This book explains the refrigeration cycle of air conditioners and heat pumps, refrigerant properties, heat transfer, the components included in the system, the roles of each component, airflow requirements, and common problems. Procedures Included: Pump Down, Vacuum and Standing Vacuum Test, Recovery and Recovery Bottle Use, Refrigerant Manifold Gauge Set and Hose Connections, Service Valve Positions and Port Access, Preparation of the System for Refrigerant, Refrigerant Charging and Recovery on an Active System, Troubleshooting the Refrigerant Charge and System Operation

Complete Guide To Refrigerant Charging And Service Procedures For Air Conditioning: A Comprehensive Resource For HVAC Service And Repair "Complete Guide to Refrigerant Charging and Service Procedures for Air Conditioning" is an essential resource for HVAC professionals, technicians, and students in the field of heating, ventilation, and air conditioning. This comprehensive manual provides a detailed exploration of modern refrigerant charging techniques and service procedures, ensuring best practices in HVAC maintenance and operations. The book begins with an in-depth look at the fundamentals of air conditioning systems, explaining the roles and interactions of components such as compressors, condensers, evaporators, and expansion valves. It thoroughly covers the types of refrigerants, their environmental impacts, and the critical considerations for choosing the right refrigerant for different types of AC systems. Safety is paramount in HVAC operations, and this guide emphasizes the use of Personal Protective Equipment (PPE), safe handling practices for refrigerants, and the critical steps to avoid accidents and injuries in the workplace. Each chapter includes detailed diagrams and step-by-step instructions to enhance understanding and practical application. From the basics of system evaluation and preparation, through advanced diagnostics and troubleshooting, to the final steps of refrigerant recovery and recycling, this book offers clear, easy-to-follow procedures. It also delves into regulatory compliance, providing updates on the latest laws and regulations affecting refrigerant use, including the Montreal Protocol and its amendments. With a focus on efficiency and sustainability, "Complete Guide to Refrigerant Charging and Service Procedures for Air Conditioning" addresses the needs of today's HVAC professionals to adapt to new technologies and environmental challenges. It serves as both a practical handbook for the field and a valuable reference for preparing for HVAC certification exams. Whether you're looking to refine your skills, ensure compliance with environmental regulations, or simply gain a deeper understanding of air conditioning systems, this guide is an indispensable addition to your professional library.

Technical instructor and HVAC expert Jerry Clemons completely covers both air-conditioning as well as heating systems, so you can save money repairing your own vehicle. Covered is a history of HVAC systems, airflow throughout the system, the principles of refrigerant, diagnosis of common faults in older systems, testing procedures, and finally repair and, in the case of air conditioning, recharging your system. Also included is proper evacuation and disposal of any residual refrigerant in the system. Components such as compressors, condensers, evaporators and heater cores, pressure switches and climate control electrics and switches are also covered. Finally, for people with older cars, converting from the no-longer-available R-12 to R134a is detailed. Automotive climate controls are a complex system and are difficult to repair without proper instruction. Whether you are trying to get your old classic back to its original form or are just looking to save on expensive repairs, author Jerry Clemons and this book provide the knowledge you will need to get your car back on the road and cruising in comfort.