User's Manual

Chapter 2 System Description
2.3.16 Fan/Blower and HPA Cabinet Cooling
The
DRU-2KW employs a fan/blower, which is located at the top of the HPA cabinet. The
fan/blower is horizontally mounted to pull ambient air through the cabinet via air intakes
located on the top and rear (bottom) panels.
The cabinet is designed to divert the ambient air across the HPA heat sinks only, providing a
means of cooling for the HPA’s. All other components in the cabinet are cooled via natural
convection.
The AC-powered fan/blower has a centrifugal configuration and exhausts air through
openings on the side of the enclosure. An air flow sensor, installed below the fan/blower, is
used to monitor the air flow in the HPA cabinet. Contactors, located in the HPA cabinet
PDU, disable AC power to the HPA PSU’s when a loss of air flow occurs.
Figure 2-34 Fan/Blower
PICTURE TBD
SX03-30000-01-M01
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