CREDA T522VW DOOR KEEP MECHANISM?

THE PLASTIC FACE COVER OF THE LOCK MECHANISM HAS SHATTERED AND THE CONTACT SWITCH ON THE INSIDE HAS ALSO BECOME DETACHED FROM THE BODY OF THE MACHINE. HOW DO I REPAIR THIS MECHANISM AND /OR WHERE CAN I OBTAIN ANY TECHNICAL DRAWINGS TO VIEW THE ASSEMBLY MECHANISM TO SEE HOW IT APPEARS IN A WORKING CONDITION. I NEED TO KNOW IF THE CONTACT MECHANISM OR ANY OTHER PARTS OTHER THAN THE PLASTIC FACE COVER ARE REQUIRED. ANY ADVICE WOULD BE WELCOMED. THANK YOU