Hatteras HN4000 User Manual

Cooling Unit Module Replacement 6-5
920550-5020 Rev 14 HN4000 Hardware Installation Guide
6.2 Cooling Unit Module Replacement
Figure 6‐3showstheHN4000switch’sFanCoolingUnitmoduleandtheCoolingUnitfailure
indicator.
Figure 6-3 Cooling Unit Module and Cooling Unit Failure Indicator
TheCoolingUnitmustbereplacediftheCoolingUnitfailureindicatoris“on.”Inaddition,
theCoolingUnitshouldberemovedatregularintervalstoinspectandclean(orreplace)
theunit’sfilter.
6.2.1 Removing the Cooling Unit Module
TakethefollowingstepstoremovetheCoolingUnitmodule.
Step 1. Readtheremovalprocedurestodetermineifthe2minutetimeintervalforhot‐
replacementcanbeaccomplished.Ifyouaregoingtoreplacethemodule’sfilterele‐
ment,haveareplacementelementavailable.
Step 2. Loosenthetwomountingscrews
thatsecurethemodule.
Caution
Removal and replacement of the Cooling Unit can be performed while the HN4000 is powered up,
without affecting data or management traffic. However, the replacement operation must be com-
pleted in two minutes or less to avoid over heating of the HN4000.
Tools
#1 Phillip’s screwdriver.

Hatteras HN4000 Specifications

General

Brand	Hatteras
Model	HN4000
Category	Switch
Language	English