3
Operation and Daily Maintenance
•
Do not touch the heat dissipation component of the unit. This part of the unit is hot and may
cause a burn.
•
Do not open or dismantle the device; there are no components that a user can fix or replace.
Opening the unit may cause water leakage or expose components to direct light. Contact the
manufacturer or a qualified service representative to service the camera or to replace a
component, including the desiccant.
•
Dahua recommends the use of a thunder-proof device in concert with the unit.
•
Do not touch the CCD or the CMOS optic sensor. Use a blower to clean dust or dirt on the lens
surface. Use a dry cloth dampened with alcohol and gently wipe away any dust on the lens.
•
Use a dry soft cloth to clean the unit’s housing. If the unit is particularly dusty, use water to dilute
a mild detergent, apply the diluted detergent to a soft cloth, then gently clean the device. Finally,
use a dry cloth to wipe the unit dry. Do not use a volatile solvent like alcohol, benzene, or thinner;
or use a strong detergent with abrasives, which may damage the surface coating or reduce the
working performance of the unit.
•
Do not touch or wipe a dome cover during installation, this cover is an optical device. Refer to
the following methods clean the dome cover:
•
Stained with dirt: Use an oil-free soft brush or blower to gently remove the dirt.
•
Stained with grease or fingerprints: Use a soft cloth to wipe gently the water droplet or the oil
from the dome cover. Then, use an oil-free cotton cloth or paper soaked with alcohol or
detergent to clean the lens from the center of the dome to outside. Change the cloth several
times to ensure the dome cover is clean.
Warnings
•
Change the default password after the initial login to protect the integrity of the network.
•
Use the standard accessories provided by the manufacturer and ensure the unit is installed and
commissioned by qualified professionals.
•
Protect the lens area from laser radiation when using a laser device to aid in installation and
leveling of the unit.
•
Do not supply power via the Ethernet connection (PoE) when power is already supplied via the
power connector.
Summary of Contents for N51BL22
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