{"id":24983,"date":"2021-05-27T17:16:43","date_gmt":"2021-05-27T09:16:43","guid":{"rendered":"https:\/\/ataifuji.mjitec.tw\/faq\/"},"modified":"2021-07-01T11:13:44","modified_gmt":"2021-07-01T03:13:44","slug":"faq","status":"publish","type":"page","link":"https:\/\/ataifuji.mjitec.tw\/en\/faq\/","title":{"rendered":"FAQ"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"24983\" class=\"elementor elementor-24983 elementor-23042\" data-elementor-settings=\"[]\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5d719f9d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5d719f9d\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-328944b elementor-invisible\" data-id=\"328944b\" data-element_type=\"column\" data-settings=\"{&quot;animation&quot;:&quot;fadeIn&quot;}\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7399bc0 elementor-widget elementor-widget-accordion\" data-id=\"7399bc0\" data-element_type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-accordion\" role=\"tablist\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1211\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"tab\" aria-controls=\"elementor-tab-content-1211\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-question-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-check-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">What leads to overheating of motors?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1211\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1211\">If the motor becomes excessively hot during operation, the cause may be followings:\n<ul>\n \t<li>Electrical causes: Undervoltage or overvoltage, asymmetrical three-phase current, diminishing insulation resistance.<\/li>\n \t<li>Environmental impacts: High ambient temperatures, lack of ventilation or poor ventilation, high installation elevation (low air density).<\/li>\n \t<li>Mechanical causes: Too many switching cycles, flow rate too high or too low, high resistance to rotation due to damaged pump, high viscosity or density of the pumped medium, clogged or blocked pump.\n<\/li>\n<\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1212\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"tab\" aria-controls=\"elementor-tab-content-1212\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-question-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-check-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">The circuit breaker or fuses have tripped. What might be the cause?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1212\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1212\"><p>Circuit breakers and fuses trip for numerous reasons: undervoltage, asymmetric three-phase current, a short circuit on the motor, incorrect wiring or faulty electrical connections, a worn or blocked pump. The viscosity or density of used liquid for the pump is over the standard specification.<\/p><p>However, the product may also be undersized for the application in question, and may be operating in excess of its nominal flow rate.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1213\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"tab\" aria-controls=\"elementor-tab-content-1213\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-question-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-check-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">What does water hammering mean, and what causes it?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1213\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1213\"><p>Water hammering is a pressure surge caused by a rapid change in flow velocity in the pipeline. This phenomenon is referred to as &#8220;water hammering&#8221; because the pressure surges are frequently accompanied by a noise that sounds as if the pipeline were being pounded with a hammer.<\/p><p>In well installations, water hammering generally occurs if 1. The non-return valve in the downpipe extending down from the pump is installed more than 9 m above the water level, or 2. The non-return valve installed in the downpipe extending down from the pump is leaky, while a non-return valve fitted above that level stays tight. In both cases, a partial vacuum is created in the downpipe. The next time the pump is started up, water fills the vacuum at high flow velocity and presses against the closed non-return valve and the stationary water column in the pipeline, thereby causing a pressure surge or water hammering.<\/p><p>This pressure surge may cause pipelines to burst and pipe joints to break, and may damage the pump and\/or the motor. If pressure surges do occur, the system should be switched off, and the pump installer should be brought in to resolve the problem.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1214\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"tab\" aria-controls=\"elementor-tab-content-1214\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-question-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-check-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">How is the total head of a pump defined?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1214\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1214\">The total head is defined as the work that needs to be performed by the pump to pump the medium with reference to a defined unit of weight. Expressed more simply, the delivery head is equal to the pressure measured at the discharge port minus the inlet pressure applied at the suction port. The delivery head is generally specified in \u201cm.\u201d Generally speaking, the delivery head is represented together with the flow rate in the form of the QH curve.<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1215\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"tab\" aria-controls=\"elementor-tab-content-1215\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-question-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-check-circle\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" href=\"\">What does abrasion mean?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1215\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"tabpanel\" aria-labelledby=\"elementor-tab-title-1215\">Solid particles in the pumped liquid generate friction, which leads to abrasion of the material. This is a frequently occurring problem in sewerage technology caused by metal powder, scrap, or particles in the pumped medium, which damages pump components like impellers, and brings harmful effects to the operation of the pump and lower it\u2019s performance.<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-5c3265a elementor-invisible\" data-id=\"5c3265a\" data-element_type=\"column\" data-settings=\"{&quot;animation&quot;:&quot;fadeIn&quot;}\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b5c7885 elementor-widget elementor-widget-image\" data-id=\"b5c7885\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3.jpg 1000w, https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3-300x300.jpg 300w, https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3-200x200.jpg 200w, https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3-600x600.jpg 600w, https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3-150x150.jpg 150w, https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3-768x768.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>What leads to overheating of motors? If the motor becomes excessively hot during operation, the cause may be followings: Electrical causes: Undervoltage or overvoltage, asymmetrical three-phase current, diminishing insulation resistance. Environmental impacts: High ambient temperatures, lack of ventilation or poor ventilation, high installation elevation (low air density). Mechanical causes: Too many switching cycles, flow rate&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":[],"class_list":["post-24983","page","type-page","status-publish","hentry","description-off"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.6.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>FAQ - \u4e9e\u53f0\u5bcc\u58eb\u7cbe\u6a5f\u80a1\u4efd\u6709\u9650\u516c\u53f8<\/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:\/\/ataifuji.mjitec.tw\/en\/faq\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FAQ - \u4e9e\u53f0\u5bcc\u58eb\u7cbe\u6a5f\u80a1\u4efd\u6709\u9650\u516c\u53f8\" \/>\n<meta property=\"og:description\" content=\"What leads to overheating of motors? If the motor becomes excessively hot during operation, the cause may be followings: Electrical causes: Undervoltage or overvoltage, asymmetrical three-phase current, diminishing insulation resistance. Environmental impacts: High ambient temperatures, lack of ventilation or poor ventilation, high installation elevation (low air density). Mechanical causes: Too many switching cycles, flow rate&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ataifuji.mjitec.tw\/en\/faq\/\" \/>\n<meta property=\"og:site_name\" content=\"\u4e9e\u53f0\u5bcc\u58eb\u7cbe\u6a5f\u80a1\u4efd\u6709\u9650\u516c\u53f8\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ataifujimotor\" \/>\n<meta property=\"article:modified_time\" content=\"2021-07-01T03:13:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/#organization\",\"name\":\"\\u4e9e\\u53f0\\u5bcc\\u58eb\\u7cbe\\u6a5f\\u80a1\\u4efd\\u6709\\u9650\\u516c\\u53f8\",\"url\":\"https:\/\/ataifuji.mjitec.tw\/en\/\",\"sameAs\":[\"https:\/\/www.facebook.com\/ataifujimotor\"],\"logo\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/#logo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/05\/logo_A-.svg\",\"contentUrl\":\"https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/05\/logo_A-.svg\",\"width\":\"1024\",\"height\":\"1024\",\"caption\":\"\\u4e9e\\u53f0\\u5bcc\\u58eb\\u7cbe\\u6a5f\\u80a1\\u4efd\\u6709\\u9650\\u516c\\u53f8\"},\"image\":{\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/#logo\"}},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/#website\",\"url\":\"https:\/\/ataifuji.mjitec.tw\/en\/\",\"name\":\"\\u4e9e\\u53f0\\u5bcc\\u58eb\\u7cbe\\u6a5f\\u80a1\\u4efd\\u6709\\u9650\\u516c\\u53f8\",\"description\":\"ATAI FUJI MOTOR CO., LTD.\",\"publisher\":{\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/ataifuji.mjitec.tw\/en\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/faq\/#primaryimage\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3.jpg\",\"contentUrl\":\"https:\/\/ataifuji.mjitec.tw\/wp-content\/uploads\/2021\/06\/001-3.jpg\",\"width\":1000,\"height\":1000},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/faq\/#webpage\",\"url\":\"https:\/\/ataifuji.mjitec.tw\/en\/faq\/\",\"name\":\"FAQ - \\u4e9e\\u53f0\\u5bcc\\u58eb\\u7cbe\\u6a5f\\u80a1\\u4efd\\u6709\\u9650\\u516c\\u53f8\",\"isPartOf\":{\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/faq\/#primaryimage\"},\"datePublished\":\"2021-05-27T09:16:43+00:00\",\"dateModified\":\"2021-07-01T03:13:44+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/faq\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/ataifuji.mjitec.tw\/en\/faq\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/ataifuji.mjitec.tw\/en\/faq\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\\u9996\\u9801\",\"item\":\"https:\/\/ataifuji.mjitec.tw\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"FAQ\"}]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/ataifuji.mjitec.tw\/en\/wp-json\/wp\/v2\/pages\/24983","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ataifuji.mjitec.tw\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ataifuji.mjitec.tw\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ataifuji.mjitec.tw\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ataifuji.mjitec.tw\/en\/wp-json\/wp\/v2\/comments?post=24983"}],"version-history":[{"count":5,"href":"https:\/\/ataifuji.mjitec.tw\/en\/wp-json\/wp\/v2\/pages\/24983\/revisions"}],"predecessor-version":[{"id":25794,"href":"https:\/\/ataifuji.mjitec.tw\/en\/wp-json\/wp\/v2\/pages\/24983\/revisions\/25794"}],"wp:attachment":[{"href":"https:\/\/ataifuji.mjitec.tw\/en\/wp-json\/wp\/v2\/media?parent=24983"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}