Dahua HAC-HUM1220G-M User Manual - Page 18

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Appendix Ⅰ Maintenance

Caution

Please maintain the device according to the following instructions in order to ensure the image

effect and long-term stable operation of the device.

Maintenance for lens and mirror surface

The lens and mirror surface are covered with antireflection coating, so it may produce

hazardous substance and lead to performance reduction or scratch, dimness etc. when it is

stained with dust, grease, fingerprint and so on, please refer to the following methods to deal

with once dirt is found:

Stained with dirt

Use oil-free soft brush or hair dries to remove it gently.

Stained with grease or fingerprint

Use soft cloth to wipe the water drop or oil gently to make it dry, then use oil-free cotton cloth

or paper soaked with alcohol or detergent to wipe from the lens center to outward. It is ok to

change the cloth and wipe several times if it is not clean enough.

Camera Body Maintenance

Use 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 use

volatile 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.

Note



This manual is for reference only. Slight difference may be found in the user

interface.



All the designs and software here are subject to change without prior written

notice.



All trademarks and registered trademarks mentioned are the properties of their

respective owners.



If there is any uncertainty or controversy, please refer to the final explanation of

us.



Please visit our website or contact your local service engineer for more

information.