104 Opening and Closing the DoorThe rack has one front door and one rear door. Both doors arevented and can be opened easily.To open the rack's front or rear door:1. Slide the keylock cover as far as it will go, press the keylockbutton to automatically release the handle. If the door is locked,unlock it using the key.2. Rotate the handle 90 degrees counter-clockwise until the latchreleases, and then pull open the door.Step 1 Step 2Figure 6 Opening the Rack DoorTo close the rack's front or rear door:1. Shut the door and rotate the handle clockwise to its originalposition.2. Push the handle until it clicks.

Acer Altos RM900 Installation Manual