Do you have questions about our products?

Our employees will be glad to assist you.

Telephone: +49 3722 89081 151




In case of a defect or a required inspection of a QUADRIGO module, please send this, along with information regarding the error:


Harms & Wende QST GmbH


Nordstraße 25

09247 Chemnitz-Röhrsdorf

In case of a defect of a Harms & Wende welding controller, please fill in the following form:


Download the form to your computer and open it in Adobe Acrobat Reader. After filling in the document, it will be automatically inserted into the e-mail program, with the help of the “send” button and an e-mail will be generated. Here, you have the possibility of attaching important information, such as, for example, photos, logs and so on.

Please include a printout of the form when sending the defective device. Subsequently, send the defective device to:


Harms & Wende GmbH & Co. KG

Grossmoorkehre 9

21079 Hamburg



After your device has been received by our colleagues, it will be examined. Our service department will then contact you and provide information about the further procedures. A quotation will be sent by e-mail. You will then discuss everything else with our colleagues.