Extreme Networks Summit WM Maintenance Manual page 114

Maintaining the Summit WM Controller
Figure 13 illustrates the fan model that is used: PAPST 3412 N/2.
Figure 13: Fan Tray
The fan trays are positioned on the left and right in the Summit WM200/2000 Controller shelf. Each fan
features three conductors {12 V, ground (GND), speed signal}. The fan trays are connected to the
backplane by a connection cable.
Figure 14 illustrates the fan tray covers, as well as the numbering of the fans.
ventilation grills for the Summit WM200/2000 Controller fans.
Figure 14: Fan tray covers and numbering of fans
Fan tray cover
(Fans 1 and 2)
Figure 15: Summit WM200/2000 Controller ventilation grills
114
Figure 15
Fan tray cover
(Fans 3 and 4)
Summit WM Maintenance Guide, Software Version 5.3
illustrates the