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...Fan Coil Routine Cleaning 1. Gather all necessary equipment and supplies prior to setting up at the fan coil, see below. 2. Prepare the fan coil for servicing by clearing a work space around the unit and proceed to cover the floor with a sheet of clean 4 or 6 mil polyethylene sheeting. 3. Set up at the fan coil unit being careful not to use the occupants’ furniture as a work station. 4. Turn both the thermostat and the circuit breaker to the OFF position which supplies electricity to the fan coil. Take note of the thermostat settings prior to turning the unit off. 5. Workers are required to wear eye protection, allergy free disposable gloves and a disposable respirator with a minimum NIOSH rating of 95 (see attached link). http://www.grainger.com/Grainger/items/4VT69 6. Remove the return grill and filter cartridge. The power switch inside the unit must also be turned OFF before proceeding. 7. If either the return grill (lower) or discharge grill (upper) are dirty take them outside or to a maintenance area with a hose and thoroughly clean both sides using a mild detergent and warm water. Dry completely before re-installing. Inspect the air filter and replace as needed or at least every six month. 8. Visually assess the interior condition of the fan coil (i.e. coil surface condition and cleanliness, water level and cleanliness inside the bottom condensate pan, wiring connection for damage, rust or algae growth. If conditions warrant follow the cleaning instruction outlined below...
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...their components but not the actual location of the components. Line diagrams provide a fast, easy understanding of the connections and use of components. Electric Motor Controls, G. Rockis, 2001 2 Electric Motor Controls, G. Rockis, 2001 Wiring Diagrams Wiring (connection) diagram – a diagram that shows the connection of an installation or its component devices or parts. Wiring diagrams show, as closely as possible, the actual location of each component in a circuit, including the control circuit and the power circuit. 3 Electric Motor Controls, G. Rockis, 2001 Manual Control Circuits Manual control circuit – any circuit that requires a person to initiate an action for the circuit to operate. A line diagram may be used to illustrate a manual control circuit of a pushbutton controlling a pilot light. A line diagram may be used to illustrate the control and protection of a 1ϕ motor using a manual starter with overload protection. 4 Electric Motor Controls, G. Rockis, 2001 Electric Motor Controls, G. Rockis, 2001 5 Automatic Control Circuits Automatically-controlled devices have replaced many jobs that were once performed manually. As a part of automation, control circuits are designed to replace...
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... A storage device may be used to store energy from renewable energy source in DC form which can be converted to AC power by using power inverter. Pulse Width Modulated (PWM) technique may be used to control output rms voltage of the inverter. As the load is variable, the power consumed by the load (PL) may be smaller than the power generated from the renewable energy source (PR). Therefore a Flexible AC Transmission System (FACTS) Controller may be used to supply the additional power (PR – PL) from the renewable energy source to the grid. On the other hand if the power consumed by the load (PL) is greater than the power generated from the renewable energy source (PR) therefore the same FACTS controller may be used to absorb the additional power (PR – PL) from the grid to the load. In this case the FACTS controller must allow bi-directional power flow. If all the active houses are connected to the grid in the same way (proposed way), the active houses that generate more power than the load can be supplied to the active houses that generate less power than the load. Therefore a suitable FACTS controller should be designed in such a way that it can control the power flow in both directions. The idea is illustrated in the following figure. 1.2 Objectives: • Study on different FACTS controllers • Study on different renewable energy sources • Study on different energy storage devices • Study...
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...NEHU Grid Sub-station is located at Umjarain; under the control of the Resident Engineer, NEHU Grid S/s, Umjarain which is under the Office of the Executive Engineer, Transmission and Transformation Division Shillong. At present there is 1(One) Assistant Engineer, 3(Three) Junior Engineers and 4 staffs (which include 2 Jugali, 1 Lineman-2 and 1 Casual Jugali) performing shift duty on rotation basis. Besides these, there are 5 Maintenance staffs (Comprising of 1 Lineman-2 and 4 nos. Casual Jugalis) that are assisting the Resident Engineer in day to day maintenance work to maintain uninterrupted Power supply. NEHU Grid substation is connected to 4 Grid Substations namely Umiam Grid s/s by Umiam Feeder, Mawlai Grid S/s by Mawlai Feeder, NEIGRIHMS Grid S/s by NEIGRIHMS Feeder and Khliehriat S/s by Khliehriat Feeder which are further interconnected to other S/s and Power stations of the state of Meghalaya. The transmitting voltage is 132 KV. The Power received at NEHU S/s at 132 KV voltage level is transfer to the 33 KV Bus after the voltage is stepped down from 132 KV to 33 KV by 2 nos. 20 MVA transformer located in the 132 KV switchyard of the S/s. These two Transformers operate in parallel. From the 33 KV Bus the power is transfer to the different 33/11 KV sub-stations by the 33 KV Feeders viz, Happy Valley Feeder, Meter factory feeder, SE Falls Feeder, Umiam feeder and NEHU-Mawiong Feeder. There is also one 33 KV Tie-Line namely 33 KV Tie-Line-2 which connects the NEHU...
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...has conquered the world of science and has reached to this 21ST century. In pre-cuts of perfection, He has cared much for automation and product quality which is directly co related to electronics. In this fact developing society, electronic has come to stay as the most important branch of Engineering. Electronic devices are being used in almost all the industries for quality control and automation. They have become a fast replacement of present workers army which is engaged in processing and assembling of the factory. In this fact developing society, electronic has come to stay as the most important branch of Engineering. Electronic devices are being used in almost all the industries for quality control and automation. They have become a fast replacement of present workers army which is engaged in processing and assembling of the factory. 2. Problem statement: The objective of this project is to make a device with the help of PLC which can control automatically the devices connected with it, the PLC we are using is Siemens LOGO module, we control the street light, home appliances, Lamp Flasher, and star delta starter. The PLC helps us in automatic control of devices with its output signal; we can also provide the time delay using timers. 1 3. Purpose of the Project: An engineer discovers new ideas and identifies opportunities in various sectors of national economy. He explores the possibilities of starting adventures infield of agriculture, trade, industry, transport and...
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...Question 3 Part A: A variable power supply converts alternating current that is not regulated, into a constant direct current with the aid of a rectifier. Its main function is to supply a steady voltage to other components such as a device or circuits that are normally operated within specific power supply ranges. An AC ammeter is a device that has two terminals, has no resistance to flow and is polarized. Usually, an ammeter is connected in series with components of a circuit as it measures the sign and magnitude of AC current passing through the component. In order for this to work the circuit must be open to connect the ammeter. A CRO (cathode ray oscilloscope) is an instrument that allows you to observe voltages that are always varying as a plot. Its main function is to observe the change of electrical signals over a period of time. This change...
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...REMOTELY CONTROLLED HOME AUTOMATION SYSTEM’ A thesis submitted in Patial fulfillment of the Requirements for the degree Bachelor of Technology in Information Technology by Saurav Chandra Anurag Sahu Anjali Agarwal Sachin Kushwaha Ved Prakash Gautamm to the COMPUTER SCIENCE AND ENGINEERING DEPARTMENT MOTILAL NEHRU NATIONAL INSTITUTE OF TECHNOLOGY allahabad May,2014 1 Undertaking We declare that the work presented in this thesis titled ”Remotely controlled Home automation” submitted to the Computer Science and engineering depatment,Motilal Nehru National Institute of Technology,Allahabad,for the awardof the Bachelor of Technology degree in Information Technology ,is our original work.We have not plagiarised orsubmitted tha same work for the award of any other degreeIn case this undertaking is found incorrect, we accept that our degree can be unconditionally withdrawn • Saurav Chandra May 2014, Allahabad • Anurag Sahu • Anjali Agarwal • Sachin Kushwaha • Ved Prakash Gautamm 2 Contents 1 Introduction 1.1 Project Overview . . . . . . . . . . . . 1.1.1 Automation . . . . . . . . . . . 1.1.2 Project Aim . . . . . . . . . . . 1.1.3 Project Scope and Limitations 1.1.4 Benefits of Project . . . . . . . 1.2 Report Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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...show how a circuit is connected together. The actual layout of the components is usually quite different from the circuit diagram. To build a circuit you need a different diagram showing the layout of the parts on stripboard or printed circuit board. Wires and connections Component Circuit Symbol Wire Function of Component To pass current very easily from one part of a circuit to another. A 'blob' should be drawn where wires are connected (joined), but it is sometimes omitted. Wires connected at 'crossroads' should be staggered slightly to form two Tjunctions, as shown on the right. In complex diagrams it is often necessary to draw wires crossing even though they are not connected. I prefer the 'bridge' symbol shown on the right because the simple crossing on the left may be misread as a join where you have forgotten to add a 'blob'! Wires joined Wires not joined Power Supplies Component Cell Circuit Symbol Function of Component Supplies electrical energy. The larger terminal (on the left) is positive (+). A single cell is often called a battery, but strictly a battery is two or more cells joined together. Battery DC supply AC supply Fuse Transformer Earth (Ground) Supplies electrical energy. A battery is more than one cell. The larger terminal (on the left) is positive (+). Supplies electrical energy. DC = Direct Current, always flowing in one direction. Supplies electrical energy. AC = Alternating Current, continually changing direction...
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...culture instead of a brand. While they still focused on innovation, they weren’t he first ones to create a computer or cellphone, but essentially they mastered it and made their software as attractive as possible to their consumers. I feel as if apple can stay with the innovation attitude, but I feel as if they have established themselves to the point where consumers don’t look at their products in being different anymore because of all the current competition in the tech market. Also consumers feel like owning an apple product is a luxury item, because of the current price points their products sell at. With the always changing, fast paced, tech market I feel like the direction apple should be going towards is cross platform compatibility while continuing to be the standard in the tech world. Meaning that your watch is connected to your phone, which is connected to your tablet, which connected to your laptop, which can be connected to a variety of other future devices. Focusing on the ease of use and the ease of switching between devices’ can help apple in the long run, as many products basically have the same functions. As stated in the...
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...will address multiple issues faced in a growing enterprise. The new network must incorporate a new network topology to reduce downtime and ensure that functionality will remain if one or two devices are down. In addition, a VoIP system must be installed over the network, along with an internal WLAN in each store. The WAN will tie all three stores together to increase collaboration and network file sharing, and the new network must be easily scalable to support growth of the company and integration of future stores. Of utmost priority is the security of the network. The sensitive nature of credit card processing makes Kudler Fine Foods a prime victim for cyber threats, and therefore policies must be put in place to protect the customer and employee data. Network Characteristics and Components The current network characteristics and components for the Del Mar store starts with a small office scenario that is accompanied by six Dell Vostro computers for management. All six computers are running Windows 7 and all have an 802.11n for connectivity. This store has a total of three Point Of Sale (POS) terminals and a POS server to run and control the POS terminals. The POS terminals are NCR RealPOS 82XRT and have scanners, cash drawers, touch screens, and printers. The server is connected to each POS terminal and also to the 100base T Ethernet. In the server room at this location we have a HP Blade...
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...NTC/361 Huffman Trucking Service Request SR-ht-010 Huffman Trucking is a national transportation company that provides carrier services for various vendors, including the United States Government. At present the company has a main office in Cleveland Ohio and hubs located in California, Missouri, and New Jersey (Apollo Group, Inc., 2012) . The ability to remain competitive relies on capable employees and efficient systems that operate at full capacity. The company is in the midst of developing the yearly budget and is examining all of the current systems in place. The Chief Information Officer (CIO) has requested a full review of all the current telephone and data network systems in all locations. Along with the review, recommendations for changes are also required. This document will outline Huffman Trucking’s systems and identify areas for improvement to maintain the company’s high level of service. Telephone Systems Looking at the current systems in the four plants and offices one can see that all four of the offices and plants have different telecommunication systems. Huffman Trucking has locations in four states with offices and plants located in California, Missouri, New Jersey, and Ohio. Many of the locations are using wiring that is not adequate for the system to have the capabilities to function in a business capacity. The California and New Jersey locations use a plain old telephone system (POTS), Private Branch Exchange (PBX). When using the PBX system they only...
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...• Understand Linux Network Terms Set Up Network Devices with the ip Tools Save Device Settings to a Configuration File Set Up Routing with the ip Tool Advanced SUSE Linux Enterprise Server Administration (Course 3038) 2 Objectives (continued) • Save Routing Settings to a Configuration File • Configure Host Name and Name Resolution • Test the Network Connection with Command-Line Tools Advanced SUSE Linux Enterprise Server Administration (Course 3038) 3 Understand Linux Network Terms • Device – Network adapter built into the system • Link – Used by command-line tool ip to refer to the connection of a device to the network • Address – IP address assigned to a device • Broadcast – Refers to the broadcast address of a network • Route – Path IP packet takes from source to destination host Advanced SUSE Linux Enterprise Server Administration (Course 3038) 4 Set Up Network Devices with the ip Tool • Command-line ip tool – Changes the network card configuration • Used to perform the following tasks – Display the Current Network Configuration – Change the Current Network Configuration Advanced SUSE Linux Enterprise Server Administration (Course 3038) 5 Display the Current Network Configuration • IP address setup – Syntax • ip address show Advanced SUSE Linux Enterprise Server Administration (Course 3038) 6 Display the Current Network Configuration (continued) • Device attributes – Syntax • ip link show – Possible...
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...general-purpose microprocessor. In addition to the usual arithmetic and logic elements of a general purpose microprocessor, the microcontroller typically integrates additional elements such as read-write memory for data storage, read-only memory, such as flash memory for code storage and permanent data storage memory, peripheral devices, and input/output interfaces. Microcontrollers often operate at very low speed compared to modern day microprocessors, but this is adequate for many typical applications. They consume relatively little power (milliwatts), and will generally have the ability to sleep while waiting for an interesting peripheral event such as a button press to wake them up again to do something. Power consumption while sleeping may be just nanowatts, making them ideal for low power and long lasting battery applications. Microcontrollers are frequently used in automatically controlled products and devices, such as automobile engine control systems, remote controls, office machines, appliances, power tools, and toys. By reducing the size, cost, and power consumption compared to a design using a separate microprocessor, memory, and input/output devices, microcontrollers make it economical to electronically control many more processes. This chapter will present a foundation for new engineers interested in Microcontroller application. The chapter starts with the basic electrical concepts that may be many of reader will be familiar with. The idea behind that is to give...
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...electrochemistry to actual experiments, (2) understand the processes and elements of an electrochemical cell and (3) determine the spontaneity of reduction-oxidation (redox) reactions based on standard reduction potential. Different half-cells were prepared and connected to copper, which served as the reference electrode, to set up a voltaic cell. The volt-meter readings of the set-ups were then used to calculate for the standard reduction potentials of the variable half-cells. The results obtained from the experiment indicated the spontaneity of the redox reactions investigated, showing that the least spontaneous system is that connected to another copper half- while the most spontaneous system is that connected to the Zinc half-cell. Introduction: Electrochemistry is the study of the relationships between chemical reactions and electricity. The functionality of every portable electronic device you own, whether it be your laptop, Ipod, or cell phone, is made possible by electrochemical reactions. Fundamental oxidation/reduction reactions occur inside the batteries of these devices. Chemists and engineers all over the world are searching for ways to improve the technology by developing materials, which will make the batteries for these devices cheaper, more lightweight, and longer lasting. Electrochemical reactions can be spontaneous or non-spontaneous. We will build on the principles we learned from the thermodynamics unit to determine if an electrochemical process is spontaneous. If it...
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