Miele H 6700 BM Operating And Installation Instructions page 17

To avoid corrosion on the stainless steel surfaces of the Speed
Oven, remove any splashes on the interior walls of the oven from
food or liquids containing salt.
Do not use oven cleaners. Commercial oven cleaners or oven
liners of any kind should not be used in or around any part of the
oven.
Accessories
Use only genuine original Miele parts. If parts or accessories from
other manufacturers are used, the warranty will become void.
Only use the Miele roast probe supplied with this oven. If it is
faulty, it must only be replaced with a Miele genuine roast probe.
SAVE THESE INSTRUCTIONS AND REVIEW THEM PERIODICALLY
IMPORTANT SAFETY INSTRUCTIONS
17