Solution
The CleanerInterval global setting allows you to specify when the cleaner should run. The default value is 3600 seconds.
Recommended:
In large installations, the cleaner should clean more often (set lower CleanerInterval) to even out the deletion load and lower variability of disk space used. The cleaner deletes complete files (not partial files); therefore, set a smaller maximum file size to minimize the chance that too much data is deleted by the cleaner. See How to set maximum file footage size.
Add a custom setting using the Manual Configuration Editor:
Type: Global
ID: <your server ID>
Section: Main
Key: CleanerInterval
Value: <value in seconds>