8Appendix Ⅰ MaintenanceAttention:Please maintain the device according to the following instructions in order to ensure the imageeffect and long-term stable operation of the device.Maintenance for lens and mirror surfaceThe lens and mirror surface are covered with antireflection coating, so it may producehazardous substance and lead to performance reduction or scratch, dimness etc when it isstained with dust, grease, fingerprint and so on, please refer to the following methods to dealwith once dirt is found:Stained with dirtUse oil-free soft brush or hair dries to remove it gently.Stained with grease or fingerprintUse soft cloth to wipe the water drop or oil gently to make it dry, then use oil-free cotton clothor paper soaked with alcohol or detergent to wipe from the lens center to outward. It is ok tochange the cloth and wipe several times if it is not clean enough.Camera Body MaintenanceUse a soft dry cloth to clean the camera body when it is dirty, in case the dirt is hard to remove,use a clean dry cloth soaked with mild detergent and wipe gently, make it dry later. Don’t usevolatile solvent like alcohol, benzene, thinner and etc or strong detergent with abrasiveness,otherwise it will damage the surface coating or reduce the working performance of the device.Maintenance for Dome CoverDome cover is an optical device, please don’t touch or wipe cover surface directly duringinstallation and use, please refer to the following methods to deal with once dirt is found:Stained with dirtUse oil-free soft brush or hair dries to remove it gently.Stained with grease or fingerprintUse soft cloth to wipe the water drop or oil gently to make it dry, then use oil-free cotton clothor paper soaked with alcohol or detergent to wipe from the lens center to outward. It is ok tochange the cloth and wipe several times if it is not clean enough.