DB 2006(05) says
The frequency of servicing should be based on the manufacturer's recommendations otherwise the provider will carry increased liability
In the notes it then says
Should be based on the manufacturer's recommendations, taking into account how much the equipment will be used.
So according to DB 2006(05) as the manufacturer says it doesn't need servicing (make sure its in writing) and it will not be used very often you don't need to worry?
Lee