Toro Commercial Products Electrical Systems Components 96885SL

Commercial Products Electrical Systems and Components Part No. 96885SL, Rev. A Introduction Safety While the risk of electrical shock is relatively low when working on a 12 volt electrical system, care must be taking when working on equipment electrical systems. Fumes from battery electrolyte are flammable. Keep all sparks and fires away from the battery. When charging the battery, explosive fumes are produced more rapidly.

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Be sure the room or area where batteries are being recharged is well ventilated. Electricity plays an important role in modern turf equipment. Modern 12 volt electrical systems are used almost exclusively in turf equipment. The demands on the electrical system include: starting, lighting and ignition systems. Electrical circuits control the operation of the machines and monitor certain machine functions. They enhance the overall operation and also improve the operators safety, through various safety circuits. New methods to control the operation and the function of the machine are made possible because of electrical devices. Battery acid is harmful on contact with the skin or most materials. If acid contacts the skin, rinse the affected area with running water for 10 to 15 minutes. If acid contacts the eyes, force the eyelids open and flush the eyes with running water for 10 to 15 minutes. Then see a doctor at once. To avoid injury from sparks or short circuit, Disconnect the negative battery ground cable when working on any part of the electrical system. Remove all Jewelry and watches when working on live circuits. Injury can result from high temperature caused when jewelry, rings or watches come in contact with powered circuits and ground circuits. When removing batteries always disconnect the negative battery cable first. When reconnecting the battery wait until last to connect the negative cable. Do not lay tools or parts across the battery, the metal parts or tools can short across the battery posts and a fire or explosion can result. With the use of microprocessor based controls, the potential of electrical and electronic circuits and controls will greatly change the ease of operation and the reliability of current and future equipment. These new advances in electrical systems will require a better understanding of electricity and complete electrical systems, to enable technicians to diagnose and repair these systems. INDEX 1: ELECTRICAL PRINCIPLES, PAGE 2. OBJECTIVE: To familiarize the technician with the basic fundamentals of electrical systems and their operation. 2: TEST EQUIPMENT, PAGE 5. OBJECTIVE: Inform technicians of proper use of electrical test equipment. 3: BASIC CIRCUIT TEST, PAGE 9. OBJECTIVE: Provide technicians with helpful information on the procedures for testing basic electrical circuits. 4: ELECTRICAL COMPONENTS AND TESTING, PAGE 11. OBJECTIVE: Explain the operation and function of basic electrical components. Instruct technicians on the proper methods to test various common electrical components. 6: BASIC CIRCUITS, PAGE 21. OBJECTIVE: Examine various electrical circuits. 7: REVIEW QUESTIONS, PAGE 24. Review Answers

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