{"id":987507430,"date":"2018-08-19T15:29:01","date_gmt":"2018-08-19T14:29:01","guid":{"rendered":"https:\/\/tpmatrix.co.uk\/?post_type=project&p=987507430"},"modified":"2026-07-31T09:36:27","modified_gmt":"2026-07-31T08:36:27","slug":"revision-general-de-la-unidad-de-control-de-puertas-de-la-clase-175","status":"publish","type":"project","link":"https:\/\/tpmatrix.co.uk\/es\/project\/class-175-door-control-unit-overhaul\/","title":{"rendered":"Revisi\u00f3n de la unidad de control de puertas de la Clase 175"},"content":{"rendered":"

[et_pb_section fb_built=”1″ custom_padding_last_edited=”on|tablet” _builder_version=”4.27.6″ _module_preset=”default” use_background_color_gradient=”on” background_color_gradient_direction=”90deg” background_color_gradient_stops=”rgba(31,37,50,0.82) 0%|rgba(31,37,50,0.11) 100%” background_color_gradient_overlays_image=”on” background_image=”https:\/\/tpmatrix.co.uk\/wp-content\/uploads\/2026\/07\/Minuet-train-edited.jpg” custom_margin=”0px||0px||false|false” custom_padding=”160px||160px||false|false” custom_padding_tablet=”140px||140px||false|false” custom_padding_phone=”100px||100px||false|false” locked=”off” global_colors_info=”{}”][et_pb_row _builder_version=”4.27.6″ _module_preset=”default” width=”90%” max_width=”1296px” custom_margin=”0px||0px||false|false” custom_padding=”0px||0px||false|false” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″][et_pb_column type=”4_4″ module_class=”pa-inline-buttons” _builder_version=”4.27.6″ _module_preset=”default” animation_direction=”left” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″][et_pb_text admin_label=”Title” _builder_version=”4.27.6″ _dynamic_attributes=”content” _module_preset=”default” header_font=”–et_global_heading_font|700|||||||” header_text_align=”left” header_text_color=”#FFFFFF” header_font_size=”45px” header_line_height=”1.2em” max_width=”905px” custom_margin=”0px||17px||false|false” custom_margin_tablet=”0px||17px||false|false” custom_margin_phone=”0px||10px||false|false” custom_margin_last_edited=”on|phone” custom_padding=”0px||0px||false|false” header_font_size_tablet=”45px” header_font_size_phone=”35px” header_font_size_last_edited=”on|phone” global_colors_info=”{}”]@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF90aXRsZSIsInNldHRpbmdzIjp7ImJlZm9yZSI6IjxoMT4iLCJhZnRlciI6IjwvaDE+In19@[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ custom_padding_last_edited=”off|phone” _builder_version=”4.27.6″ _module_preset=”default” background_enable_image=”off” background_size=”initial” overflow-x=”hidden” overflow-y=”hidden” custom_margin=”0px||0px||false|false” custom_padding=”80px||0px||false|false” custom_padding_tablet=”80px||80px||true|false” custom_padding_phone=”60px||60px||true|false” locked=”off” global_colors_info=”{}”][et_pb_row _builder_version=”4.27.6″ _module_preset=”default” width=”90%” max_width=”1296px” custom_margin=”||20px||false|false” custom_padding=”||0px||false|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”][et_pb_text content_tablet=”<\/p>\n

Over recent years the Class 175 rolling stock based at Chester Traincare depot had been experiencing an increase in failures of the Door Control Units (DCU\u2019s).<\/h2>\n

” content_phone=”<\/p>\n

Over recent years the Class 175 rolling stock based at Chester Traincare depot had been experiencing an increase in failures of the Door Control Units (DCU\u2019s).<\/h2>\n

” content_last_edited=”off|phone” admin_label=”Title” _builder_version=”4.27.6″ _module_preset=”default” header_2_font=”–et_global_heading_font|700|||||||” header_2_text_align=”left” header_2_text_color=”#1F2532″ header_2_font_size=”36px” header_2_line_height=”1.2em” width=”100%” custom_margin=”0px||15px||false|false” custom_padding=”0px||0px||false|false” header_2_font_size_tablet=”34px” header_2_font_size_phone=”30px” header_2_font_size_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

Over recent years the Class 175 rolling stock based at Chester Traincare depot had been experiencing an increase in failures of the Door Control Units (DCU\u2019s).<\/h2>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”2_3,1_3″ make_equal=”on” custom_padding_last_edited=”on|phone” admin_label=”Client Challenge” _builder_version=”4.27.6″ _module_preset=”default” background_color=”#F4F4F4″ width=”90%” width_tablet=”90%” width_phone=”90%” width_last_edited=”on|desktop” max_width=”1296px” max_width_tablet=”1296px” max_width_phone=”1296px” max_width_last_edited=”on|phone” custom_margin=”||||false|false” custom_margin_tablet=”||||false|false” custom_margin_phone=”||||false|false” custom_margin_last_edited=”on|phone” custom_padding=”40px|40px|40px|40px|true|true” custom_padding_tablet=”40px|40px|40px|40px|true|true” custom_padding_phone=”20px|20px|20px|20px|true|true” border_radii=”on|8px|8px|8px|8px” collapsed=”off” global_colors_info=”{}”][et_pb_column type=”2_3″ _builder_version=”4.27.6″ _module_preset=”default” custom_css_main_element=”display: flex;||flex-direction: column;||justify-content: center;” global_colors_info=”{}”][et_pb_text content_tablet=”<\/p>\n

Background<\/h2>\n

” content_phone=”<\/p>\n

Background<\/h2>\n

” content_last_edited=”off|phone” admin_label=”Title” _builder_version=”4.27.6″ _module_preset=”default” header_2_font=”–et_global_heading_font|700|||||||” header_2_text_align=”left” header_2_text_color=”#1F2532″ header_2_font_size=”36px” header_2_line_height=”1.2em” width=”100%” custom_margin=”0px||15px||false|false” custom_padding=”0px||0px||false|false” header_2_font_size_tablet=”34px” header_2_font_size_phone=”30px” header_2_font_size_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

Background<\/h2>\n

[\/et_pb_text][et_pb_text _builder_version=”4.27.6″ _module_preset=”default” text_font=”–et_global_body_font||||||||” text_font_size=”17px” link_text_color=”#00AF4D” width=”100%” custom_margin=”0px||40px||false|false” custom_padding=”0px||||false|false” global_colors_info=”{}” link_text_color__hover_enabled=”on|hover” link_text_color__hover=”#1F2532″]<\/p>\n

On behalf of its customer TP Matrix performed a detailed Condition Assessment on a small batch of DCU\u2019s to determine those components deemed to be at risk of failure or past their operational life expectancy.<\/p>\n

The objective of the project was to significantly improve the fleet Reliability, reduce Repair Lead Times and reduce Operational Costs.<\/p>\n

With limited technical information available, TP Matrix engineers used Reverse Engineering techniques to produce a detailed Technical Specification to fully understand the functionality of the product. Following this process, software was written to enable full testing of the DCUs on Automatic Test Equipment (ATE).<\/p>\n

In total, 135 like for like (or better) components were replaced on each DCU at a rate of 4 units per week.
All work was carried out to IPC7711 & IPC610 standards.<\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”4.27.6″ _module_preset=”default” custom_css_main_element=”display: flex;||flex-direction: column;||justify-content: center;” global_colors_info=”{}”][et_pb_image src=”https:\/\/tpmatrix.co.uk\/wp-content\/uploads\/2026\/07\/TP-Matrix-Class-175-2.jpg” title_text=”TP-Matrix-Class-175-2″ _builder_version=”4.27.6″ _module_preset=”default” max_width_tablet=”” max_width_phone=”” max_width_last_edited=”on|phone” custom_margin=”0px||0px||false|false” custom_padding=”0px||0px||false|false” sticky_limit_bottom=”row” border_radii=”on|8px|8px|8px|8px” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ custom_padding_last_edited=”on|desktop” _builder_version=”4.27.6″ _module_preset=”default” background_enable_color=”off” background_enable_image=”off” background_size=”initial” overflow-x=”hidden” overflow-y=”hidden” custom_margin=”0px||0px||false|false” custom_padding=”80px||80px||false|false” custom_padding_tablet=”60px||60px||true|false” custom_padding_phone=”60px||60px||true|false” locked=”off” global_colors_info=”{}”][et_pb_row use_custom_gutter=”on” gutter_width=”1″ make_equal=”on” admin_label=”Results” module_class=”insurance-11-inlbtn-sc” _builder_version=”4.27.6″ _module_preset=”default” width=”90%” max_width=”1296px” max_width_tablet=”1296px” max_width_phone=”1296px” max_width_last_edited=”on|desktop” custom_margin=”0px||0px||false|false” custom_margin_tablet=”||0px||false|false” custom_margin_phone=”||0px||false|false” custom_margin_last_edited=”off|phone” custom_padding=”0px||0px||false|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.6″ _module_preset=”default” custom_padding=”||||false|false” custom_padding_tablet=”||||false|false” custom_padding_phone=”||||false|false” custom_padding_last_edited=”on|phone” custom_css_main_element=”display: flex;||flex-flow: row wrap;” global_colors_info=”{}”][et_pb_text content_tablet=”<\/p>\n

212 DCU\u2019s have been overhauled resulting in a 90% reduction in failures compared to figures prior to the overhaul.<\/h2>\n

Internal images of a DCU \u2013 all components were assessed for condition, signs of ageing and end of operational life expectancy.” content_phone=”<\/p>\n

212 DCU\u2019s have been overhauled resulting in a 90% reduction in failures compared to figures prior to the overhaul.<\/h2>\n

Internal images of a DCU \u2013 all components were assessed for condition, signs of ageing and end of operational life expectancy.” content_last_edited=”off|desktop” admin_label=”Title” _builder_version=”4.27.6″ _module_preset=”default” text_font_size=”17px” header_2_font=”–et_global_heading_font|700|||||||” header_2_text_align=”left” header_2_text_color=”#1F2532″ header_2_font_size=”36px” header_2_line_height=”1.2em” width=”100%” custom_margin=”0px||15px||false|false” custom_padding=”0px||0px||false|false” header_2_font_size_tablet=”34px” header_2_font_size_phone=”30px” header_2_font_size_last_edited=”on|phone” global_colors_info=”{}”]<\/p>\n

212 DCU\u2019s have been overhauled resulting in a 90% reduction in failures compared to figures prior to the overhaul.<\/h2>\n

Internal images of a DCU \u2013 all components were assessed for condition, signs of ageing and end of operational life expectancy.[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_2,1_2″ use_custom_gutter=”on” gutter_width=”2″ make_equal=”on” _builder_version=”4.27.6″ _module_preset=”default” width=”90%” width_tablet=”90%” width_phone=”90%” width_last_edited=”on|phone” max_width=”1296px” custom_margin=”||0px||false|false” custom_padding=”||0px||false|false” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”][et_pb_divider show_divider=”off” _builder_version=”4.27.6″ _module_preset=”default” background_image=”https:\/\/tpmatrix.co.uk\/wp-content\/uploads\/2026\/07\/Class-175-Project-03.jpg” height=”380px” border_radii=”on|8px|8px|8px|8px” global_colors_info=”{}”][\/et_pb_divider][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”][et_pb_divider show_divider=”off” _builder_version=”4.27.6″ _module_preset=”default” background_image=”https:\/\/tpmatrix.co.uk\/wp-content\/uploads\/2026\/07\/Class-175-Project-02.jpg” height=”380px” border_radii=”on|8px|8px|8px|8px” global_colors_info=”{}”][\/et_pb_divider][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.27.6″ _module_preset=”default” width=”90%” max_width=”1296px” locked=”off” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.27.6″ _module_preset=”default” global_colors_info=”{}”][et_pb_post_nav prev_text=”Previous Case Study” next_text=”Next Case Study” _builder_version=”4.27.6″ _module_preset=”default” title_font=”–et_global_heading_font|700|||||||” title_text_color=”#FFFFFF” title_font_size=”15px” width=”100%” custom_margin=”||60px||false|false” custom_margin_tablet=”||40px||false|false” custom_margin_phone=”||25px||false|false” custom_margin_last_edited=”on|tablet” title_font_size_tablet=”15px” title_font_size_phone=”14px” title_font_size_last_edited=”on|phone” custom_css_free_form=”.single-project.et_pb_pagebuilder_layout .nav-single {|| width: 100%;|| max-width: 1296px;|| margin: 10px auto;||}||” custom_css_prev_link=”color: #FFFFFF !important;|| border-color: #00AF4D;|| border-radius: 0px;|| letter-spacing: 0.5px;|| font-size: 15px;|| font-family: ‘Roboto’, Helvetica, Arial, Lucida, sans-serif !important;|| font-weight: 700 !important;|| background-color: #00AF4D;||padding-top: 14px !important;|| padding-right: 26px !important;|| padding-bottom: 15px !important;|| padding-left: 26px !important;||” custom_css_next_link=”color: #FFFFFF !important;|| border-color: #00AF4D;|| border-radius: 0px;|| letter-spacing: 0.5px;|| font-size: 15px;|| font-family: ‘Roboto’, Helvetica, Arial, Lucida, sans-serif !important;|| font-weight: 700 !important;|| background-color: #00AF4D;||padding-top: 14px !important;|| padding-right: 26px !important;|| padding-bottom: 15px !important;|| padding-left: 26px !important;||” locked=”off” global_colors_info=”{}” custom_css_prev_link__hover_enabled=”on|hover” custom_css_prev_link__hover=”color: #1F2532 !important;” custom_css_next_link__hover_enabled=”off|desktop” custom_css_next_link__hover=”color: #1F2532 !important;” custom_css_next_link_last_edited=”off|desktop”][\/et_pb_post_nav][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

Over recent years the Class 175 rolling stock based at Chester Traincare depot had been experiencing an increase in failures of the Door Control Units (DCU\u2019s).BackgroundOn behalf of its customer TP Matrix performed a detailed Condition Assessment on a small batch of DCU\u2019s to determine those components deemed to be at risk of failure or past their operational life expectancy. The objective of the project was to significantly improve the fleet Reliability, reduce Repair Lead Times and reduce Operational Costs. With limited technical information available, TP Matrix engineers used Reverse Engineering techniques to produce a detailed Technical Specification to fully understand the functionality of the product. Following this process, software was written to enable full testing of the DCUs on Automatic Test Equipment (ATE). In total, 135 like for like (or better) components were replaced on each DCU at a rate of 4 units per week.All work was carried out to IPC7711 & IPC610 standards.212 DCU\u2019s have been overhauled resulting in a 90% reduction in failures compared to figures prior to the overhaul. Internal images of a DCU \u2013 all components were assessed for condition, signs of ageing and end of operational life expectancy.<\/p>","protected":false},"author":1,"featured_media":987507440,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"project_category":[],"project_tag":[],"class_list":["post-987507430","project","type-project","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nClass 175 Door Control Unit Overhaul | TP Matrix<\/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:\/\/tpmatrix.co.uk\/es\/proyecto\/revision-general-de-la-unidad-de-control-de-puertas-de-la-clase-175\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Class 175 Door Control Unit Overhaul | TP Matrix\" \/>\n<meta property=\"og:description\" content=\"Over recent years the Class 175 rolling stock based at Chester Traincare depot had been experiencing an increase in failures of the Door Control Units (DCU\u2019s).BackgroundOn behalf of its customer TP Matrix performed a detailed Condition Assessment on a small batch of DCU\u2019s to determine those components deemed to be at risk of failure or past their operational life expectancy. The objective of the project was to significantly improve the fleet Reliability, reduce Repair Lead Times and reduce Operational Costs. With limited technical information available, TP Matrix engineers used Reverse Engineering techniques to produce a detailed Technical Specification to fully understand the functionality of the product. Following this process, software was written to enable full testing of the DCUs on Automatic Test Equipment (ATE). In total, 135 like for like (or better) components were replaced on each DCU at a rate of 4 units per week.All work was carried out to IPC7711 & IPC610 standards.212 DCU\u2019s have been overhauled resulting in a 90% reduction in failures compared to figures prior to the overhaul. Internal images of a DCU \u2013 all components were assessed for condition, signs of ageing and end of operational life expectancy.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tpmatrix.co.uk\/es\/proyecto\/revision-general-de-la-unidad-de-control-de-puertas-de-la-clase-175\/\" \/>\n<meta property=\"og:site_name\" content=\"TP Matrix\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-31T08:36:27+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/tpmatrix.co.uk\/wp-content\/uploads\/2026\/07\/Class175-Train2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/class-175-door-control-unit-overhaul\\\/\",\"url\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/class-175-door-control-unit-overhaul\\\/\",\"name\":\"Class 175 Door Control Unit Overhaul | TP Matrix\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/class-175-door-control-unit-overhaul\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/class-175-door-control-unit-overhaul\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/tpmatrix.co.uk\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Class175-Train2.jpg\",\"datePublished\":\"2018-08-19T14:29:01+00:00\",\"dateModified\":\"2026-07-31T08:36:27+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/class-175-door-control-unit-overhaul\\\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/class-175-door-control-unit-overhaul\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/class-175-door-control-unit-overhaul\\\/#primaryimage\",\"url\":\"https:\\\/\\\/tpmatrix.co.uk\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Class175-Train2.jpg\",\"contentUrl\":\"https:\\\/\\\/tpmatrix.co.uk\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Class175-Train2.jpg\",\"width\":1280,\"height\":720},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/class-175-door-control-unit-overhaul\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/tpmatrix.co.uk\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Projects\",\"item\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Class 175 Door Control Unit Overhaul\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/#website\",\"url\":\"https:\\\/\\\/tpmatrix.co.uk\\\/\",\"name\":\"TP Matrix\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/tpmatrix.co.uk\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Revisi\u00f3n de la unidad de control de puertas de la Clase 175 | Matriz TP","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/tpmatrix.co.uk\/es\/proyecto\/revision-general-de-la-unidad-de-control-de-puertas-de-la-clase-175\/","og_locale":"es_ES","og_type":"article","og_title":"Class 175 Door Control Unit Overhaul | TP Matrix","og_description":"Over recent years the Class 175 rolling stock based at Chester Traincare depot had been experiencing an increase in failures of the Door Control Units (DCU\u2019s).BackgroundOn behalf of its customer TP Matrix performed a detailed Condition Assessment on a small batch of DCU\u2019s to determine those components deemed to be at risk of failure or past their operational life expectancy. The objective of the project was to significantly improve the fleet Reliability, reduce Repair Lead Times and reduce Operational Costs. With limited technical information available, TP Matrix engineers used Reverse Engineering techniques to produce a detailed Technical Specification to fully understand the functionality of the product. Following this process, software was written to enable full testing of the DCUs on Automatic Test Equipment (ATE). In total, 135 like for like (or better) components were replaced on each DCU at a rate of 4 units per week.All work was carried out to IPC7711 & IPC610 standards.212 DCU\u2019s have been overhauled resulting in a 90% reduction in failures compared to figures prior to the overhaul. 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