{"id":695,"date":"2025-08-04T01:14:34","date_gmt":"2025-08-03T18:14:34","guid":{"rendered":"http:\/\/www.tneutron.net\/mesin\/?p=695"},"modified":"2025-07-28T07:43:06","modified_gmt":"2025-07-28T00:43:06","slug":"security-devices-refrigeration-machine","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/mesin\/security-devices-refrigeration-machine\/","title":{"rendered":"Security Devices Refrigeration Machine"},"content":{"rendered":"<p><span class=\"notranslate\">As is known, one of the electrical load on the refrigeration machine is deforst heater.<\/span> <span class=\"notranslate\"> Defrost heater is an electrical component in the refrigeration machine for controlling the amount of a layer of frost on the surface of the evaporator.<\/span> <span class=\"notranslate\"> When the layer of frost that accumulates on the surface of the evaporator is not removed it will interfere with the cooling process.<\/span> <span class=\"notranslate\"> Therefore, the refrigeration unit either for domestic or commercial purposes has been equipped with automatic defrost system, namely by using the defrost timer.<\/span><\/p>\n<p><span class=\"notranslate\"> Defrost timer is one of the safety devices installed on the refrigerator unit.<\/span> <span class=\"notranslate\"> Figure 2.23 shows a typical defrost timer, which operates electromechanical.<\/span> <span class=\"notranslate\"> Figure 2.24 shows a typical defrost timer operating in microelectronics.<\/span> <span class=\"notranslate\"> Electronic control device is equipped with a microprocessor that can be programmed as needed.<\/span><\/p>\n<p><a href=\"http:\/\/www.tneutron.net\/mesin\/wp-content\/uploads\/sites\/4\/2015\/09\/image40.png\"><img loading=\"lazy\" decoding=\"async\" title=\"image\" src=\"http:\/\/www.tneutron.net\/mesin\/wp-content\/uploads\/sites\/4\/2015\/09\/image_thumb40.png\" alt=\"image\" width=\"327\" height=\"185\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> Figure 2.23 Typical mechanical Defrost Timer<\/span><\/p>\n<p><span class=\"notranslate\"> System defrost (defrost) automatically applied to the refrigerator unit using a timer to activate the defrost cycle.<\/span> <span class=\"notranslate\"> In the automatic defrost system, added heater (pemenas elements) and the thermostat on the evaporator coil.<\/span> <span class=\"notranslate\"> Defrost timer set defrost cycle in the evaporator, typically every 8 hours.<\/span> <span class=\"notranslate\"> If during defrost arrived, then the compressor will stop working, and the defrost heater will be active.<\/span> <span class=\"notranslate\"> Defrost heater will heat the evaporator so that the frost melts.<\/span><\/p>\n<p><a href=\"http:\/\/www.tneutron.net\/mesin\/wp-content\/uploads\/sites\/4\/2015\/09\/image41.png\"><img loading=\"lazy\" decoding=\"async\" title=\"image\" src=\"http:\/\/www.tneutron.net\/mesin\/wp-content\/uploads\/sites\/4\/2015\/09\/image_thumb41.png\" alt=\"image\" width=\"278\" height=\"187\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> Figure 2.24 Typical electronic timer Defrost<\/span><\/p>\n<p><span class=\"notranslate\"> Defrost thermostat will monitor the temperature of the evaporator, and when the evaporator temperature reaches a certain point, the defrost heater becomes inactive.<\/span> <span class=\"notranslate\"> Defrost thermostat commonly known as the defrost termination thermostat or defrost terminator or thermal defrost switch.<\/span> <span class=\"notranslate\"> The target evaporator temperature is typically 40 and 60 0F.<\/span> <span class=\"notranslate\"> 2:25 image shows the location of placement defrost termination and construction.<\/span><\/p>\n<p><a href=\"http:\/\/www.tneutron.net\/mesin\/wp-content\/uploads\/sites\/4\/2015\/09\/image42.png\"><img loading=\"lazy\" decoding=\"async\" title=\"image\" src=\"http:\/\/www.tneutron.net\/mesin\/wp-content\/uploads\/sites\/4\/2015\/09\/image_thumb42.png\" alt=\"image\" width=\"420\" height=\"181\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> Typical image Defrost 2:25 terminator<\/span><\/p>\n<p><span class=\"notranslate\"> Water condensate tray accommodated by a type that is placed on the bottom of the evaporator where the heat from the compressor and condenser flowing through so as to accelerate the process of evaporation.<\/span><br \/>\n<span class=\"notranslate\"> Some cycle defrost system implemented based on the time count.<\/span> <span class=\"notranslate\"> The amount of time chosen by the interval between defrost.<\/span> <span class=\"notranslate\"> If the timer counts the time that have been achieved, then the system will defrost start work, without taking into account the need for cooling in the system.<\/span><\/p>\n<p><span class=\"notranslate\"> This configuration is commonly referred to as continuous run.<\/span> <span class=\"notranslate\"> Type of more effective computation time is a system that takes into account the amount of time the compressor work.<\/span> <span class=\"notranslate\"> When the timer detects the accumulation of compressor working time in accordance with the desired timing of the defrost system will work.<\/span> <span class=\"notranslate\"> Such systems are commonly referred to as a cumulative run-time defrost.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As is known, one of the electrical load on the refrigeration machine is deforst heater. Defrost heater is an electrical<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[1406],"tags":[816,817,822,821,818,820,819,823,825,824],"class_list":["post-695","post","type-post","status-publish","format-standard","hentry","category-english","tag-refrigeration-machine","tag-refrigeration-machine-operator","tag-refrigeration-machine-operator-jobs","tag-refrigeration-machine-operator-jobs-nyc","tag-refrigeration-machine-operator-license","tag-refrigeration-machine-operator-license-preparation","tag-refrigeration-machine-operator-practice-exam","tag-refrigeration-machine-operator-salary-nyc","tag-refrigeration-machine-room-ventilation","tag-refrigeration-machinery-room"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Security Devices Refrigeration Machine - TN Mesin<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tneutron.net\/mesin\/security-devices-refrigeration-machine\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Security Devices Refrigeration Machine - TN Mesin\" \/>\n<meta name=\"twitter:description\" content=\"As is known, one of the electrical load on the refrigeration machine is deforst heater. 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