Patent ID: 11967508
Assignee: EBARA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  F | IPC H

Claim 3:
4. A damper control method for controlling an exhaust damper connected to an exhaust duct attached to a partition wall of a processing module, comprising:
controlling an opening degree of the exhaust damper based on a pressure measured by a first pressure sensor arranged in an internal space of the partition wall;
switching the opening degree of the exhaust damper to an opening degree smaller than a full opening on condition that a shutter configured to open and close an opening formed to the partition wall is opened,
controlling the opening degree of the exhaust damper based on the pressure measured by the first pressure sensor on condition that the shutter is closed; and
switching a monitoring target from the first pressure sensor to a second pressure sensor arranged in the exhaust duct on condition that the shutter is opened.