3com DUA1800-0AAA04 User Manual
DUA1800-0AAA04
The Thermal Management Unit
2-19
Removing The Thermal Management Unit
Refer to Figure 2-8.
The MSH does not have to be powered down before carrying out
the procedure.
the procedure.
1 Loosen two screws to remove the locking bar.
2 Using a screwdriver loosen the two captive screws that secure the
thermal management unit in the MSH chassis.
3 Slowly withdraw the unit from the chassis.
WARNING: A replacement thermal management unit must be
fitted immediately. If this is not possible, you must power down
the MSH to prevent damage from overheating.
fitted immediately. If this is not possible, you must power down
the MSH to prevent damage from overheating.
Cleaning The Filters
WARNING: It is important that the filters are kept clean. If dust is
allowed to build up, the air flow through the fans and the effect
of cooling of the MSH chassis will be reduced. This could cause
the MSH to overheat.
allowed to build up, the air flow through the fans and the effect
of cooling of the MSH chassis will be reduced. This could cause
the MSH to overheat.
Chassis.bk : CHAPTER2 Page 19 Monday, February 10, 1997 1:11 PM