The Liebert® CW is a single component in the facility heat-removal system. The system includes air
distribution (raised floors, duct systems), outdoor heat rejection (pumps) and indoor cooling and humidity
loads (equipment load, location, outside air infiltration). Proper application and maintenance of the entire
system is critical to the life and reliability of the thermal-management units.
• Good maintenance practices are essential to minimizing operation costs and maximizing
product life.
• Read and follow monthly and semi-annual maintenance schedules included in this manual.
These MINIMUM maintenance intervals may need to be more frequent based on site-specific
conditions.
• See the Liebert®iCOM™ user manual, SL-31075, available at www.Vertiv.com, for instructions on
using the controller to predict some service maintenance intervals.
• We recommend the use of trained and authorized service personnel, extended service
contracts and factory-specified replacement parts. Contact your Vertiv sales representative.
8.1 Filters
NOTICE
Risk of improper filter installation. Can cause filter collapse and airflow reduction.
To maximize the performance and reliability of the equipment, use only Vertiv filters. Contact your Vertiv
representative to order replacement filters.
Verify that filters are installed and positioned so the air-flow direction marked on the filter is the same
direction as unit air flow.
Unit size Filter Type
Filter Size,
Width x Length x Depth
Quantity
CW305, CW375, CW415 MERV 8 28 x 22 x 4 15
Table 8.1 Filter Quantity and Type
Vertiv | Liebert® CW™ Installer/User Guide
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