ZBA Inc .Page 33 of 335. MaintenanceThis device provides reliable and efficient operation with minimum amount ofcare. Although specific maintenance is not required, the following precautionsneed to be ensured.5.1. Cleaning the Window and HousingAny visible dirt, or scratch on the scan window will degrade reading performance,therefore do not use abrasive wipes or tissues on the window. When the deviceis not operating, use a soft cloth or lens tissue and gently wipe the scanningwindow lens.Do not spread liquid or submerge into liquid under any circumstance.Never use solvents (e.g., acetone, benzene, ether, or any kind of phenol-basedagents) on the housing or window, solvents may damage the housing finish andthe window.5.2. Inspecting on Interface CablesRegularly inspect the interface cables and its connectors, a badly worn ordamaged cable or connecters may interference with the devices operation.Contact your distributor for information on cable replacement.5.3. BatteryThe lifetime of rechargeable batteries is related to the total number of times thebatteries are recharged. In general, we recommend charge the device at theregular intervals depending on the amount of usage. Heavily used units mayneed to be charged at the end of each working day, or sooner as indicated by alow battery warning. Lightly used units may go several days between charging.