Vertiv I Liebert Air Cooled Condenser I User Manual
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The fan speed controller is inside the electrical control box (Refer Figure 1-2 and Figure 1-3).
Rotate the isolation switch to ‘OFF’, and then remove the cover plate of the electrical control
box, as shown in Figure 4-1. Remove the cover plate of the electrical control box before
removing the fan speed controller board. Except for the seven bolts in Figure 4-2, other bolts
are prohibited to remove. The bolt 1 and bolt 2, which are used to fix the heat sink on the fan
speed controller board, must be fastened firstly. The heat sink must cling to the floor of the
electrical control box. After installing the heat sink, use other five bolts to fix the fan speed
controller board.
ON
OFF
Figure 4-1
Fan speed controller board
Fan speed controller board
Bolt 2
Bolt 1
散热片
Heat sink
Figure 4-2 Removing the fan speed controller board
