Patent ID: 7768222

Claim:
A method of controlling rotational velocity of an air-moving device of an electronics rack, the method comprising: automatically responding to an event associated with one or more electronics subsystems of the electronics rack by setting rotational velocity of the air-moving device to a first upper limit (RPM 1 ); sensing motor temperature of a motor of the air-moving device; automatically increasing rotational velocity of the air-moving device to a second upper limit (RPM 2 ) if the sensed motor temperature is below a first predefined temperature threshold (T 1 ), wherein RPM 2 >RPM 1 ; maintaining rotational velocity of the air-moving device at the second upper limit (RPM 2 ) while the sensed motor temperature is below a second predefined temperature threshold (T 2 ), wherein T 2 >T 1 ; and returning to a normal operating rotational velocity of the air-moving device subsequent to servicing of the electronics rack responsive to the event.