213. Grasp the two handles of the fan tray with the side marked TOP facing up, and slide the fan trayalong the guide rails into the slot until the fan tray seats in the slot and has a firm contact withthe backplane.Figure 27 Installing a fan trayIMPORTANT:• At the first login to the switch, use the fan prefer-direction command to set the airflowdirection of the switch to be the same as the airflow direction of the fan tray. If the fan tray has adifferent airflow direction than the switch, the system outputs traps and logs to notify you toreplace the fan tray.• By default, the switch uses the same airflow direction (power-to-port) as the LSPM1FANSA fantray.Removing a fan trayWARNING!• Do not touch conductors or terminals on the fan trays.• Do not place the fan tray in moist place. Prevent liquid from entering the fan tray.• Fan trays with faulty internal wiring and conductors require maintenance from maintenanceengineers. Do not disassemble the faulty fan trays.• Take out the fan tray after the fans completely stop rotating. Do not touch the fans even if the fansstop rotating to avoid affecting fan balance, which might cause loud fan operating noise.To remove a fan tray:1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.2. Grasp the two handles of the fan tray, as shown by callout 1 in Figure 28, and pull out the fantray slowly along the guide rails.3. Put the removed fan tray in an antistatic bag.
