Setup guide

MMAC-M8FNB SETUP
Page 3-5
3.2.3 Inserting the Fan Tray
The MMAC-M8FNB is equipped with a removable fan tray that allows
for easy periodic cleaning and/or replacement if a problem occurs with
fan operation. To insert the fan tray in the MMAC-M8FNB:
1. Hold the fan tray as shown in Figure 3-3 (following page) and align
the slotted paths on the tray with the slot guides on the left and
right walls of the MMAC-M8FNB chassis.
2. Slide the fan tray forward until the tray’s face is flush with the face
of the MMAC-M8FNB. If you encounter any strong resistance,
remove the fan tray and reinsert it. Do not force the fan tray into
place as this may damage the unit.
3. Once the tray is in place, tighten the knurled knobs to secure the
tray to the MMAC-M8FNB.
4. When the MMAC-M8FNB is ready to be turned on, observe the
LED on the front of the fan tray. This LED should be red for a
moment after you turn on the power switch, and then change to
green to indicate that all the fans are operating properly.
If this LED remains red, it indicates that one or more of the fans is
not operating at the proper speed. Check the fan tray to ensure that
nothing is interfering with movement of the fans; also, check to
make sure nothing is blocking the air vents on the chassis or the
fan tray. If you cannot find the problem, call Cabletron Systems
Technical Support for assistance.
The fan tray is hot-swappable; however, the chassis
must not be run without the fan tray for extended
periods of time, as it will quickly overheat.