Emerson Centellis 2000 Shelf Release 3.0 Manual page 167

Safety Notes
Product Damage
High humidity and condensation on blade surfaces causes short circuits.
Do not operate the system outside the specified environmental limits. Make sure the system is
completely dry and there is no moisture on any surface before applying power. Do not start the
system below 0 ºC.
Injury
Caution: This unit has two AC power connections/ two -48 V to -60 VDC feeds. All must be
disconnected to de energize the system. To reduce the risk of injury, disconnect the feeds
when removing power from the system.
System Damage
Air Filters
Air contamination can pollute the air filter and obstruct the air intake of the system which may
cause system overheating and component damage.
To guarantee proper airflow through the system the air filters have to be replaced at least every
six months. Emerson recommends to replace the air filters every 90 days. Filter replacement
frequency depends on the environment the system is subjected to.
Because central offices vary in physical location and cleanliness, check your air filters every
week after you first install your system. In a dusty environment, filter replacement may be
required more often than in a cleaner environment. Check the filters frequently until you have
a good idea of how often they must be replaced. Based on your findings, establish a regular
replacement schedule and keep a log to record the date of each filter replacement.
Filter Frames
Wrong insertion may damage the frame or the guides.
When inserting the filter frame into the shelf, pay attention to insert the appropriate bottom
or top frame and to align it accurately to the guides.
Centellis 2000 Shelf Release 3.0 Installation and Use (6806800L99F)
167