Log in as the machine administrator from the control panel.
Press [System Settings].
Press [Administrator Tools].
Press [Next].
Press [Print Volum. Use Limit.: Default Limit Value].
[Print Volum. Use Limit.: Default Limit Value] does not appear if you have selected [Allow Continue Use] in "Machine action when limit is reached".
Use the number keys to enter a value between "0" and "999,999" as the maximum print volume, and then press [].
Press [OK].
Log out.