Spare parts for a classic car are not so easy to obtain. It is also possible that parts of your UV system can no longer be replaced 1:1 with a spare part in the event of a defect.
You are producing with an IST UV system that is already more than 10 years old - congratulations - and thank you for being our customer for so long!
You will find the serial number on the type label of the unit, which is located on the control cabinet door, near the main switch. The number starts with a "0" followed by 5 or 7 digits.