{"id":100,"date":"2011-12-30T23:34:02","date_gmt":"2011-12-30T23:34:02","guid":{"rendered":"http:\/\/www.bentonelectronics.com\/blog\/?p=100"},"modified":"2023-08-22T17:54:29","modified_gmt":"2023-08-22T22:54:29","slug":"console-start-and-run-switch-wiring","status":"publish","type":"post","link":"https:\/\/bentonelectronics.com\/console-start-and-run-switch-wiring\/","title":{"rendered":"Console Start and Run Switch Wiring"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"100\" class=\"elementor elementor-100\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1e271c57 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1e271c57\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1d8a3881\" data-id=\"1d8a3881\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9c51130 elementor-widget elementor-widget-heading\" data-id=\"9c51130\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">General Description<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1cf9977f elementor-widget elementor-widget-text-editor\" data-id=\"1cf9977f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong>From Service Manual<\/strong><\/p><p>When the organ is started, the starting switch is turned on and held for about &#8220;8&#8221; seconds while the starting motor brings the system up to speed. The &#8220;run&#8221; switch is then turned on. This switch simultaneously connects the synchronous motor and introduces a resistor in series with the starting motor (Figure 1), thus reducing it&#8217;s driving power. With a braking action of the synchronous motor and a loss of power of the starting motor, the system slows to synchronous speed and the synchronous motor begins to carry the load.<\/p><figure id=\"attachment_481\" aria-describedby=\"caption-attachment-481\" style=\"width: 588px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/switch1.gif\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-blog wp-image-481\" title=\"Figure 1 - Switch and Motor Circuits\" src=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/switch1-588x393.gif\" alt=\"Figure 1 - Switch and Motor Circuits\" width=\"588\" height=\"393\" \/><\/a><figcaption id=\"caption-attachment-481\" class=\"wp-caption-text\">Figure 1 &#8211; Switch and Motor Circuits<\/figcaption><\/figure><p>This has always been more confusing than it should be. This run switch has an extra pair of contacts that are connected to the start switch resistor.<\/p><p>When the run switch is off, one pair of normally closed contacts simply short out a series resistor with the start motor. This allows the start motor to have full power when it is used to first start up. After the run switch is turned on, those contacts open causing the series resistor to be introduced to the start motor reducing it&#8217;s power. Also, the run motor is powered up with the other set of normally open contacts.<\/p><p>Here&#8217;s Another Look At The Run Switch Wiring:<\/p><figure id=\"attachment_482\" aria-describedby=\"caption-attachment-482\" style=\"width: 588px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/switch2.gif\"><img decoding=\"async\" class=\"size-blog wp-image-482\" title=\"Figure 2 - Run Switches\" src=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/switch2-588x432.gif\" alt=\"Figure 2 - Run Switches\" width=\"588\" height=\"432\" \/><\/a><figcaption id=\"caption-attachment-482\" class=\"wp-caption-text\">Figure 2 &#8211; Run Switches<\/figcaption><\/figure><figure id=\"attachment_483\" aria-describedby=\"caption-attachment-483\" style=\"width: 588px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/starton.gif\"><img decoding=\"async\" class=\"size-blog wp-image-483\" title=\"Start Switch On\" src=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/starton-588x393.gif\" alt=\"Start Switch On\" width=\"588\" height=\"393\" \/><\/a><figcaption id=\"caption-attachment-483\" class=\"wp-caption-text\">Above shows the current flow with the start switch on and the run switch off, just as when starting the organ<\/figcaption><\/figure><hr \/><figure id=\"attachment_484\" aria-describedby=\"caption-attachment-484\" style=\"width: 588px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/bothon.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"size-blog wp-image-484\" title=\"Start and Run Switch On\" src=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/bothon-588x393.gif\" alt=\"Start and Run Switch On\" width=\"588\" height=\"393\" \/><\/a><figcaption id=\"caption-attachment-484\" class=\"wp-caption-text\">Heres the current flow with both switches on. Notice the current now goes through the series resistor of the start motor. This reduces the start motors power as the synchronous motor is taking over.<\/figcaption><\/figure><hr \/><figure id=\"attachment_485\" aria-describedby=\"caption-attachment-485\" style=\"width: 588px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/runon.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"size-blog wp-image-485\" title=\"Run Switch On\" src=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/runon-588x393.gif\" alt=\"Run Switch On\" width=\"588\" height=\"393\" \/><\/a><figcaption id=\"caption-attachment-485\" class=\"wp-caption-text\">Now the run motor is on and the start is off<\/figcaption><\/figure>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-60c1ed5 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"60c1ed5\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-34d3393 elementor-widget elementor-widget-text-editor\" data-id=\"34d3393\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-size: 16px;\">So can a Hammond not start because of a bad run switch? You bet! The series resistor must be shorted for the start motor to have enough power to start the generator. If you have a starting problem here&#8217;s a test;<\/span><\/p><figure id=\"attachment_486\" aria-describedby=\"caption-attachment-486\" style=\"width: 569px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/switch4.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-486\" title=\"Figure 4 - Line Panel\" src=\"http:\/\/bentonelectronics.com\/wp-content\/uploads\/2011\/12\/switch4.gif\" alt=\"Figure 4 - Line Panel\" width=\"569\" height=\"336\" \/><\/a><figcaption id=\"caption-attachment-486\" class=\"wp-caption-text\">Figure 4 &#8211; Line Panel<\/figcaption><\/figure><p>Looking at the above diagram, you see the large wire wound resistor which is located on the line panel on the generator. This is a 250 Ohm 10 Watt resistor. On models with two generators, this would be a 125 Ohm. If you suspect the run switch contacts which short out the series resistor for the starting motor, you can short this resistor out yourself with a clip lead and then try the start switch. If the run switch contacts are bad, then you will now see more starting power. In this case, replace the run switch.<\/p><p>If there is no difference then you may have a bad start switch.<\/p><p>Always remove the power cord from any power source when changing out any switches or modifying any wiring. This is all connected to<span style=\"color: #ff0000;\">\u00a0<strong>117 Vac<\/strong><\/span>\u00a0and is\u00a0<span style=\"color: #ff0000;\"><strong>lethal<\/strong><\/span>.<\/p><p>It is also common for older consoles to have brittle insulation on certain wires which should be replaced for safety.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>General Description From Service Manual When the organ is started, the starting switch is turned on and held for about &#8220;8&#8221; seconds while the starting motor brings the system up to speed. The &#8220;run&#8221; switch is then turned on. This switch simultaneously connects the synchronous motor and introduces a resistor in series with the starting [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[25,26],"tags":[],"_links":{"self":[{"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/posts\/100"}],"collection":[{"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/comments?post=100"}],"version-history":[{"count":3,"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/posts\/100\/revisions"}],"predecessor-version":[{"id":1689,"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/posts\/100\/revisions\/1689"}],"wp:attachment":[{"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/media?parent=100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/categories?post=100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bentonelectronics.com\/wp-json\/wp\/v2\/tags?post=100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}