24Figure 29 Installing a fan trayIMPORTANT:• At the first login to the switch, use the fan prefer-direction command to set the airflow direction of theswitch to be the same as the airflow direction of the fan tray. If the fan tray has a different airflowdirection than the switch, the system outputs traps and logs to notify you to replace the fan tray.• By default, the switch uses the same airflow direction (power-to-port) as the LSPM1FANSA fan tray.Removing a fan trayWARNING!• Do not touch conductors or terminals on the fan trays.• Do not place the fan tray in a moist place. Prevent liquid from entering the fan tray.• Fan trays with faulty internal wiring and conductors require maintenance from maintenance engineers.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 fans stoprotating 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 30, and pull out the fan trayslowly along the guide rails.3. Put the removed fan tray in an antistatic bag.
