Technical on-call duty at the weekends
For urgent technical problems, we offer a standby service at the weekend from Friday, 6 p.m. (except on german public holidays or public holidays in NRW, if they fall on a weekend).
During this time, one of our service employees will be on call and provide advice and support.
- Call number of our on-call duty:
Tel. +49 (0) 22 94- 99 90 10