2. Daily MaintenanceExpress5800/R320e-E4, R320e-M4, R320f-E4, R320f-M4 Maintenance Guide (VMware)22Chapter 1 Maintenance2.5.1 Cleaning the serverFor daily cleaning, wipe the external surfaces of the server with a dry soft cloth. Follow the procedure below ifstains remain on the surfaces:Important To avoid altering the material and color of the server, do not use volatile solventssuch as thinner or benzene to clean the server. The power receptacle, the cables, the connectors on the rear panel of server, andthe inside of the server must be kept dry. Do not moisten them with water.1. Power off the server.1. Make sure that the server is powered off.2. Unplug the power cord of the server from a power outlet.2. Clean the power plug.Wipe off dust from the power cord plug with a dry cloth.3. Clean the server.1. Soak a soft cloth in neutral detergent that is diluted with cold or warm water, and squeeze it firmly.2. Rub off stains on the server with the cloth prepared in Step 1.3. Soak a soft cloth in water, squeeze it firmly and wipe the server with it once again.4. Wipe the server with a dry cloth.4. Clean the rear panel of the server.Wipe off dust from the fan exhaust opening on the rear of the server with a dry cloth.2.5.2 Cleaning Tape DriveA dirty tape drive head causes unsuccessful file backup and damages the tape cartridge. Periodically clean thetape drive with the designated cleaning tape.For the cleaning interval and method, the estimated usable period and lifetime of the tape cartridge, refer to theinstructions attached to the tape drive.2.5.3 Cleaning the Keyboard and MouseCheck that the entire system including the server and peripheral devices is powered off (POWER LED is unlit),and then wipe the surface of the keyboard with a dry cloth.If an optical sensor of the mouse is dusty, it cannot work normally. Wipe the optical sensor with a dry cloth toremove any dirt or dust.