CAUTION: Risk of contact with hot surfaces. Can cause injury. The electronics housing,
humidifier components, fan motor, and some electrical components are extremely hot during
unit operation. Allow sufficient time for them to cool to a touch-safe temperature before
working within the unit cabinet. Use extreme caution and wear appropriate, OSHA-approved
PPE when working on or near hot components.
CAUTION: Risk of smoke generation. Can cause fire suppression and alarm system activation,
resulting in injury during building evacuation and mobilization of emergency fire and rescue
services. Start-up operation of optional electric reheat elements can create smoke or fumes
that can activate the facility alarm and fire suppression system. Prepare and take appropriate
steps to manage this possibility. Activating reheat during initial start-up may burn off
particulates from electric reheat elements. Before beginning initial start-up checks, make
certain that unit was installed according to the instructions in this manual. All exterior panels
must be in place.
NOTICE
Risk of improper power-supply connection. Cancause equipment damage and loss of warranty coverage.
Prior to connecting any equipment to a mainor alternate power source (for example: back-up generator
systems) for start-up, commissioning, testing, or normal operation, ensure that these sources are correctly
adjusted to the nameplate voltage and frequency of all equipment to be connected. Ingeneral, power-source
voltages should be stabilized and regulated to within±10%of the load nameplate nominal voltage. Also, ensure
that nothree-phase sources are single-phased at any time.
Vertiv | Liebert® CW™Installer/User Guide
8
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