{"id":43980,"date":"2023-07-21T17:50:32","date_gmt":"2023-07-21T21:50:32","guid":{"rendered":"https:\/\/cematraining.com\/?page_id=43969"},"modified":"2024-07-07T08:45:23","modified_gmt":"2024-07-07T12:45:23","slug":"how-to-check-a-capacitor-while-the-system-is-running","status":"publish","type":"page","link":"https:\/\/cectechsupport.com\/fr\/how-to-check-a-capacitor-while-the-system-is-running\/","title":{"rendered":"Comment v\u00e9rifier un condensateur pendant que le syst\u00e8me fonctionne."},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Yes with a multimeter and using the microfarad function to check a capacitor maybe nice. But this does not test the capacitor under &#8220;load&#8221; conditions.<\/strong><\/p>\n\n\n\n<section class=\"wp-block-uagb-columns uagb-columns__wrap uagb-columns__background-none uagb-columns__stack-mobile uagb-columns__valign- uagb-columns__gap-10 align uagb-block-04e4add0 uagb-columns__columns-2 uagb-columns__max_width-theme\"><div class=\"uagb-columns__overlay\"><\/div><div class=\"uagb-columns__inner-wrap uagb-columns__columns-2\">\n<div class=\"wp-block-uagb-column uagb-column__wrap uagb-column__background-undefined uagb-block-edea0ce4\"><div class=\"uagb-column__overlay\"><\/div>\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Let&#8217;s take a look at a typical high voltage circuit of a residential air conditioner or heat pump outdoor unit.<\/strong><\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Now to do this we will need to get a few measurements.<\/strong><\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Turn the system on and let the system run for 5-10 mins to stabilize operation.<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-column uagb-column__wrap uagb-column__background-undefined uagb-block-9fefa126\"><div class=\"uagb-column__overlay\"><\/div>\n<div class=\"wp-block-uagb-image uagb-block-72faa1f7 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/pic-6.jpg \" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/pic-6.jpg\" alt=\"\" class=\"uag-image-43992\" width=\"500\" height=\"400\" title=\"\" loading=\"lazy\"\/><\/figure><\/div>\n<\/div>\n<\/div><\/section>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Lets start collecting amp draws and voltages.<\/strong><\/h4>\n\n\n\n<section class=\"wp-block-uagb-columns uagb-columns__wrap uagb-columns__background-none uagb-columns__stack-mobile uagb-columns__valign- uagb-columns__gap-10 align uagb-block-9648f601 uagb-columns__columns-2 uagb-columns__max_width-theme\"><div class=\"uagb-columns__overlay\"><\/div><div class=\"uagb-columns__inner-wrap uagb-columns__columns-2\">\n<div class=\"wp-block-uagb-column uagb-column__wrap uagb-column__background-undefined uagb-block-123ed19b\"><div class=\"uagb-column__overlay\"><\/div>\n<p class=\"wp-block-paragraph\"><strong>1st get the amp draw of the fan motor on the brown wire connected to the fan terminal of the capacitor. Example 0.5 Amp<\/strong><\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-c894cd95 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/fan-amp-draw-corrected.jpg \" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/fan-amp-draw-corrected.jpg\" alt=\"\" class=\"uag-image-44034\" width=\"814\" height=\"738\" title=\"\" loading=\"lazy\"\/><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-column uagb-column__wrap uagb-column__background-undefined uagb-block-d86cc3d0\"><div class=\"uagb-column__overlay\"><\/div>\n<p class=\"wp-block-paragraph\"><strong>2nd<\/strong><strong> get the amp draw of the compressor start wire, the blue wire connected to the herm terminal of the capacitor. Example 4.4 Amps<\/strong><\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-9e0177bf wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/pic-3.jpg \" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/pic-3.jpg\" alt=\"\" class=\"uag-image-43979\" width=\"854\" height=\"245\" title=\"\" loading=\"lazy\"\/><\/figure><\/div>\n<\/div>\n<\/div><\/section>\n\n\n\n<section class=\"wp-block-uagb-columns uagb-columns__wrap uagb-columns__background-none uagb-columns__stack-mobile uagb-columns__valign- uagb-columns__gap-10 align uagb-block-7ca72686 uagb-columns__columns-2 uagb-columns__max_width-theme\"><div class=\"uagb-columns__overlay\"><\/div><div class=\"uagb-columns__inner-wrap uagb-columns__columns-2\">\n<div class=\"wp-block-uagb-column uagb-column__wrap uagb-column__background-undefined uagb-block-fe8f2f4a\"><div class=\"uagb-column__overlay\"><\/div>\n<p class=\"wp-block-paragraph\"><strong>3rd<\/strong> <strong>Now lets get the voltage of the condenser fan motor between the brown wire and yellow common wire at the capacitor. Example 271 Volts<\/strong><\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-3a4bc799 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/fan-voltage-v2.jpg \" sizes=\"(max-width: 480px) 150px\" src=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/fan-voltage-v2.jpg\" alt=\"\" class=\"uag-image-44023\" title=\"\" loading=\"lazy\"\/><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-column uagb-column__wrap uagb-column__background-undefined uagb-block-4e4d21cf\"><div class=\"uagb-column__overlay\"><\/div>\n<p class=\"wp-block-paragraph\"><strong>4th<\/strong> <strong>lets get the voltage of the compressor between the blue start wire and yellow common wire at the capacitor. Example 297 Volts<\/strong><\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-4d4e3ee1 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/compressor-voltage-v2.jpg \" sizes=\"(max-width: 480px) 150px\" src=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/compressor-voltage-v2.jpg\" alt=\"\" class=\"uag-image-44025\" title=\"\" loading=\"lazy\"\/><\/figure><\/div>\n<\/div>\n<\/div><\/section>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Now we can do some math. Here is the formula we will use.<\/strong> <strong>Use this formula for each component.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Some formulas use 2650, 2652, 2654. We will use 2652.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-b519bea9 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/Formula.jpg \" sizes=\"(max-width: 480px) 150px\" src=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/Formula.jpg\" alt=\"\" class=\"uag-image-44028\" title=\"\" loading=\"lazy\"\/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Lets do the fan first, 2652 X 0.5 amps \/ 271 volts = 4.9 mfd <\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Next the compressor, 2652 X 4.4 amps \/ 297 volts = 39.3 mfd  <\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>If your capacitor is rated for 40\/5 mfd, the readings are within 10% and the capacitor is good.<\/strong> <\/p>\n\n\n\n<p class=\"is-style-default wp-block-paragraph\"><strong>Another Example; if the capacitor is rated 45\/5 mfd,  an allowable tolerance range for our example is 49.5 mfd &#8211; 40.5 mfd. <\/strong><\/p>\n\n\n\n<p class=\"is-style-default wp-block-paragraph\"><strong>Compressor 2652 X 6.1 amps \/ 297 volts = 54.5 mfd. This capacitor is performing at 54.5 mfd, which is greater then the 10% tolerance. This capacitor should be replaced.<\/strong><\/p>\n\n\n\n<div>[formidable id=&#8221;2&#8243;]<\/div>\n\n\n\n<section class=\"wp-block-uagb-columns uagb-columns__wrap uagb-columns__background-none uagb-columns__stack-mobile uagb-columns__valign- uagb-columns__gap-10 align uagb-block-f8591e74 uagb-columns__columns-2 uagb-columns__max_width-theme\"><div class=\"uagb-columns__overlay\"><\/div><div class=\"uagb-columns__inner-wrap uagb-columns__columns-2\">\n<div class=\"wp-block-uagb-column uagb-column__wrap uagb-column__background-undefined uagb-block-97cfe1bb\"><div class=\"uagb-column__overlay\"><\/div>\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tech tip the combined average amp draw of the R &amp; C leads from the compressor should equal the amperage of the S lead from the compressor.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>If not, the capacitor maybe weak and need to be replaced.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A weak capacitor can cause the compressor to overheat, causing high discharge temperature which causes a breakdown of the oil lubricant &amp; higher amp draw. The COST OF OPERATION INCREASES!  <\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-column uagb-column__wrap uagb-column__background-undefined uagb-block-3ec976e9\"><div class=\"uagb-column__overlay\"><\/div>\n<div class=\"wp-block-uagb-image uagb-block-040d5d0e wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/compressor-amps.jpg \" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/cematraining.com\/wp-content\/uploads\/2023\/07\/compressor-amps.jpg\" alt=\"\" class=\"uag-image-44055\" width=\"560\" height=\"400\" title=\"\" loading=\"lazy\"\/><\/figure><\/div>\n<\/div>\n<\/div><\/section>\n","protected":false},"excerpt":{"rendered":"<p>Yes with a multimeter and using the microfarad function to check a capacitor maybe nice. But this does not test the capacitor under &#8220;load&#8221; conditions. Let&#8217;s take a look at a typical high voltage circuit of a residential air conditioner or heat pump outdoor unit. Now to do this we will need to get a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","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-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-43980","page","type-page","status-publish","hentry"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Josh Goodman","author_link":"https:\/\/cectechsupport.com\/fr\/author\/joshg\/"},"uagb_comment_info":0,"uagb_excerpt":"Yes with a multimeter and using the microfarad function to check a capacitor maybe nice. But this does not test the capacitor under &#8220;load&#8221; conditions. Let&#8217;s take a look at a typical high voltage circuit of a residential air conditioner or heat pump outdoor unit. Now to do this we will need to get a&hellip;","_links":{"self":[{"href":"https:\/\/cectechsupport.com\/fr\/wp-json\/wp\/v2\/pages\/43980","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cectechsupport.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cectechsupport.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cectechsupport.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cectechsupport.com\/fr\/wp-json\/wp\/v2\/comments?post=43980"}],"version-history":[{"count":1,"href":"https:\/\/cectechsupport.com\/fr\/wp-json\/wp\/v2\/pages\/43980\/revisions"}],"predecessor-version":[{"id":43981,"href":"https:\/\/cectechsupport.com\/fr\/wp-json\/wp\/v2\/pages\/43980\/revisions\/43981"}],"wp:attachment":[{"href":"https:\/\/cectechsupport.com\/fr\/wp-json\/wp\/v2\/media?parent=43980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}