Vertiv Liebert DCD, Руководство пользователя

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5 General Information
5.1 Intended Use
The Vertiv™ Liebert® DCD35/50 Active fan module may only be installed and operated on the server cabinet doors from the
manufacturer for which it was designed (Vertiv™ Liebert® DCD). The server cabinet door represents the rear cover of the fan
module.
The fan module is designed to use in controlled environments such as data centres or server rooms.
NOTE: The environmental conditions specified in the product specifications must be observed.
All materials required for installation and commissioning are included with the unit. The external fuses described in the
product specifications and on the nameplate must be provided during installation.
NOTE: The different specifications for the different supply voltages must be observed.
5.2 Repair during Live Operation
In order to ensure high availability of the Liebert® DCD35/50 Active and thus of the entire server, it is possible to have certain
repairs carried out by qualified personnel while the fan module is operating.
WARNING! Risk of electric shock. Can cause serious injury or death. Open all local and remote electric power
supply disconnect switches and verify that power is off with a voltmeter before working within any electric
connection enclosures. The Liebert® controller does not isolate power from the unit, even in the "Unit Off"
mode. Fan-motor controls can maintain an electric charge for 10 minutes after power is disconnected. Wait 10
minutes after power is verified as off before working within the electric control/ connection enclosures.
Installation, service, and maintenance work must be performed only by properly trained and qualified
personnel and in accordance with applicable regulations and manufacturers’ specifications. Opening or
removing the covers to any equipment may expose personnel to lethal voltages within the unit even when it
is apparently not operating and the input wiring is disconnected from the electrical source.
CAUTION: Risk of accidents and injuries.
There is a risk of injury due to electric shock and rapidly rotating parts. Repairs during live operation may
only be carried out by qualified personnel with sufficient expertise, knowledge of the hazards and
appropriate protective equipment.
5.3 Description of Functions
Following the correct installation and switch-on of the voltage supply, the fans start for around 5 seconds at 30% of their
maximum speed. After that, normal operation starts. Depending on the equipment and settings of the unit, the fan speed is
controlled depending on the differential pressure or the temperature in the server cabinet. Temperature-dependent control is
only possible with units with the monitoring option (see
Monitoring Package with Display and Sensors on the next page ).
The differential pressure can be controlled in all equipment variants. The side port measures the ambient pressure and the
top port measures the internal pressure of the server with the mounted pressure hose. The control system changes the speed
of the fans so that the specified set-point differential pressure is achieved. In the standard system, the target differential
pressure is 0 Pa. On units with a TFT display, the user can preselect the target differential pressure in levels in the TFT menu.
These levels can be set in the Set-up TFT menu (password-protected). See
Menu of the TFT Display on page 39 .
5 General Information
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Vertiv™ Liebert® DCDactive Fan Module User Manual