{"id":1452,"date":"2026-10-26T23:50:19","date_gmt":"2026-10-26T22:50:19","guid":{"rendered":"https:\/\/heyer.cavano.de\/faqs\/"},"modified":"2026-11-04T23:02:07","modified_gmt":"2026-11-04T22:02:07","slug":"faq","status":"publish","type":"page","link":"https:\/\/heyer.cavano.de\/en\/faq\/","title":{"rendered":"FAQ"},"content":{"rendered":"<div class=\"wp-block-heyer-container wp-block-lazyblock-container\"><div class=\"section-standard\">\n\t<div class=\"container\" id=\"container-c444f6\">\n\t\t<div class=\"row\">\n\t\t\t<div class=\"col py-5\">\n\t\t\t\t\n\n<h2 class=\"wp-block-heading\">Frequently asked questions<\/h2>\n\n\n\n<p class=\"mb-5 has-large-font-size wp-block-paragraph\">Here you will find various categories with frequently asked questions about our products, services and inquiries. If your question is not answered here, please feel free to contact us personally.<\/p>\n\n\n<div class=\"wp-block-heyer-faq-gruppe wp-block-lazyblock-faq-gruppe\"><div class=\"faq-gruppe\" id=\"faq-6c72bc\">\n\t\t\t<h3 class=\"faq-kategorie\">Quotation<\/h3>\n\t\t<div class=\"faq-liste\">\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-6c72bc-1\" aria-expanded=\"false\" aria-controls=\"faq-6c72bc-1\">\n\t\t\t\t\t\tHow long does it take to prepare a quotation?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-6c72bc-1\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>You will usually receive your quotation within three working days. More complex requests may take a little longer \u2013 in this case, we will let you know in good time.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n<\/div>\n<\/div>\n\n\n<div class=\"wp-block-heyer-faq-gruppe wp-block-lazyblock-faq-gruppe\"><div class=\"faq-gruppe\" id=\"faq-ac34eb\">\n\t\t\t<h3 class=\"faq-kategorie\">Delivery<\/h3>\n\t\t<div class=\"faq-liste\">\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-ac34eb-1\" aria-expanded=\"false\" aria-controls=\"faq-ac34eb-1\">\n\t\t\t\t\t\tHow long does it take until I receive the products?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-ac34eb-1\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>We will give you a provisional delivery date in the order confirmation. This may vary depending on the product.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n<\/div>\n<\/div>\n\n\n<div class=\"wp-block-heyer-faq-gruppe wp-block-lazyblock-faq-gruppe\"><div class=\"faq-gruppe\" id=\"faq-9f3517\">\n\t\t\t<h3 class=\"faq-kategorie\">Products<\/h3>\n\t\t<div class=\"faq-liste\">\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-1\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-1\">\n\t\t\t\t\t\tMy outlets are difficult to operate or are sticking or jamming.\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-1\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>To remove a device, the push button does not have to be held down. Pressing the push button once is sufficient: the device in operation is moved to the parking position and the gas flow is interrupted. The device can then be removed by simply pulling it out.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-2\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-2\">\n\t\t\t\t\t\tDoes my flowmeter need to be serviced? (STK inspection)\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-2\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>The STK inspection (safety and type inspection) is only required for electrical devices. As the flowmeter is not an electrical device, an STK inspection is not required.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-3\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-3\">\n\t\t\t\t\t\tCan I send in my flowmeter for repair?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-3\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>Yes, your flowmeter can be repaired depending on the type of damage. Please send your request to <a href=\"mailto:office@heyer-aerotech.de\">office@heyer-aerotech.de<\/a>.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-4\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-4\">\n\t\t\t\t\t\tWhy does the control and valve box trigger an alarm?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-4\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>An alarm indicates that the specified pressure limits have been exceeded or not reached. Please check your supply system including the supply sources and then contact Heyer Aerotech GmbH.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-5\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-5\">\n\t\t\t\t\t\tThere is an alarm on the system in the O2 central supply\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-5\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>An alarm indicates that the specified pressure limits have been exceeded or not reached. Please check your supply system including the supply sources. Initiate all measures provided for the emergency procedure that has occurred and then contact Heyer Aerotech GmbH.<\/p><ol><li>On the side of the empty cylinder bank, close the high-pressure shut-off valve (A) by turning it clockwise.<\/li><li>Close all cylinder valves (B).<\/li><li>Depressurise the high-pressure manifold by opening the relief valve (C). To do this, turn the knurled screw anticlockwise. Then close the relief valve (C) again immediately by turning the knurled screw clockwise.<\/li><li>Loosen the high-pressure connecting bend on the cylinder valve by turning the patent hand union (D) anticlockwise. Use hand force only!<\/li><li>Check the sealing ring in the gas cylinder connection. Replace a damaged sealing ring if necessary.<\/li><li>Replace the empty gas cylinder and fit the valve protection cap.<\/li><li>Remove the valve protection cap from the full gas cylinder.<\/li><li>Connect the high-pressure connecting bend to the cylinder valve of the compressed gas cylinder by turning the patent hand union anticlockwise. Use hand force only! The seal is achieved by the cylinder pressure.<\/li><li>Slowly open the cylinder valve (B) of the gas cylinder.<\/li><li>Check the connection for leaks using leak detection fluid.<\/li><li>If there are no leaks, slowly open the high-pressure shut-off valve (A) by turning it anticlockwise.<\/li><\/ol><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-6\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-6\">\n\t\t\t\t\t\tHow do I change gas cylinders on an AGS?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-6\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>You will find detailed instructions on changing cylinders in the instructions for use of the central supply unit AGS.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-7\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-7\">\n\t\t\t\t\t\tWhat are my responsibilities for the compressed air system (as operator)?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-7\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>The facility must appoint an authorised person who is responsible for the day-to-day operation of the medical gas supply system and who monitors whether the system is being operated safely and effectively (cf. DIN EN ISO 7396-1). Among other things, the respective pressures and operating temperatures of the compressors must be checked.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-8\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-8\">\n\t\t\t\t\t\tThe compressor is getting hot. What could be the reason?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-8\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><ul><li>Check the oil level and make sure there is no oil shortage.<\/li><li>Check the filters for dirt or blockages.<\/li><li>Check the coolant level.<\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-9\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-9\">\n\t\t\t\t\t\tMay I top up the oil in the compressor myself?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-9\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>No. Maintenance may only be carried out by persons who have the necessary qualifications and are familiar with the product. Persons carrying out the measures listed must have suitable test equipment and original spare parts.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-10\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-10\">\n\t\t\t\t\t\tThe O2 monitoring (room air O2 monitoring) triggers an alarm (almost always a LOW alarm). What could be the reason? What can I do?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-10\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>The measuring device emits an acoustic and visual alarm as soon as the oxygen concentration falls below 19.5 % or exceeds 23.5 %. In these cases, the measures provided for in the emergency procedure must be initiated immediately.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-9f3517-11\" aria-expanded=\"false\" aria-controls=\"faq-9f3517-11\">\n\t\t\t\t\t\tMay I close and open ball valves myself?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-9f3517-11\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>No. Any changes to the medical gas pipeline system may only be made by qualified specialists, as this system plays an essential role in patient care.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n<\/div>\n<\/div>\n\n\n<div class=\"wp-block-heyer-faq-gruppe wp-block-lazyblock-faq-gruppe\"><div class=\"faq-gruppe\" id=\"faq-357a8d\">\n\t\t\t<h3 class=\"faq-kategorie\">Maintenance<\/h3>\n\t\t<div class=\"faq-liste\">\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-357a8d-1\" aria-expanded=\"false\" aria-controls=\"faq-357a8d-1\">\n\t\t\t\t\t\tHow often does my medical gas pipeline system need to be serviced?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-357a8d-1\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>The medical gas supply system must undergo a visual inspection, function test and leak test at least once a year. In addition, the facility must appoint an authorised person who is responsible for the day-to-day operation of the medical gas supply system and who monitors whether the system is being operated safely and effectively (cf. DIN EN ISO 7396-1).<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-357a8d-2\" aria-expanded=\"false\" aria-controls=\"faq-357a8d-2\">\n\t\t\t\t\t\tWhen will I be informed of the maintenance date?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-357a8d-2\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>Our maintenance is usually carried out once a year and is based on the previous maintenance interval. However, there may be deviations depending on workload or individual circumstances. We will inform you in good time \u2013 usually several weeks in advance \u2013 so that you can plan smoothly.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-357a8d-3\" aria-expanded=\"false\" aria-controls=\"faq-357a8d-3\">\n\t\t\t\t\t\tWhom should I contact to ask about the maintenance date?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-357a8d-3\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>Please contact our service management.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<div class=\"faq-item\">\n\t\t\t\t<h4 class=\"faq-frage\">\n\t\t\t\t\t<button class=\"faq-question collapsed\" type=\"button\" data-bs-toggle=\"collapse\" data-bs-target=\"#faq-357a8d-4\" aria-expanded=\"false\" aria-controls=\"faq-357a8d-4\">\n\t\t\t\t\t\tDoes maintenance have to be carried out by a specialist company?\t\t\t\t\t<\/button>\n\t\t\t\t<\/h4>\n\t\t\t\t<div id=\"faq-357a8d-4\" class=\"collapse\">\n\t\t\t\t\t<div class=\"faq-answer\"><p>To maintain your warranty claims, maintenance must be carried out by Heyer Aerotech GmbH or an authorised service partner.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n<\/div>\n<\/div>\n\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"slim_seo":{"description":"Frequently asked questions about quotations, delivery, products and maintenance of medical gas pipeline systems \u2013 answered by Heyer Aerotech.","title":"FAQ - Heyer Aerotech"},"footnotes":""},"class_list":["post-1452","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/heyer.cavano.de\/en\/wp-json\/wp\/v2\/pages\/1452","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/heyer.cavano.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/heyer.cavano.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/heyer.cavano.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/heyer.cavano.de\/en\/wp-json\/wp\/v2\/comments?post=1452"}],"version-history":[{"count":10,"href":"https:\/\/heyer.cavano.de\/en\/wp-json\/wp\/v2\/pages\/1452\/revisions"}],"predecessor-version":[{"id":2857,"href":"https:\/\/heyer.cavano.de\/en\/wp-json\/wp\/v2\/pages\/1452\/revisions\/2857"}],"wp:attachment":[{"href":"https:\/\/heyer.cavano.de\/en\/wp-json\/wp\/v2\/media?parent=1452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}