GE Vivid E9

GE H EALTHCARE
D IRECTION GA091568, R EVISION 5 VIVID E9 S ERVICE M ANUAL
Chapter 5 - Components and functions (theory) 5 - 25
Section 5-6
Air Flow control
5-6-1 General description
5-6-1-1 Air Flow components
The Air Flow control includes the following components:
• Air filter in the air intake on the rear of the of the VIVID E9.
• Air filter in the air intake below the fans of the of the VIVID E9 (ref. next step).
• Fan unit on bottom of the VIVID E9.
• Two fans on top of the Card Rack.
• Fans inside the BEP and the Main Power Supply.
• Temperature sensors several places inside VIVID E9.
• Temperature control software on the BEP
5-6-1-2 Software control
Software, running on the BEP, samples the temperature on each sensor.
• If the temperature rises, fan speed (and air flow) is increased.
• If the temperature decrease, the fan speed decrease.
If the temperature increase over a pre-defined level for each sensor, the scanner will shut down. It will
then need to rest for a period of time, until the temperature inside the unit has decreased to an
acceptable value, before it is possible to turn it on again. If the VIVID E9 power down due to high
temperature inside the unit, it may indicate that the air filters need to be dusted or a failure situation.