Dahua Technology DH-IPC-HDEW Series Quick Start Manual page 13

1.7 Repair and Maintenance
1.7.1 Notes to Maintenance
Equipment maintenance units or individuals must have relevant explosion-proof qualifications
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and should understand the requirements of national regulations and standards related to
maintenance work.
You should understand whether the repair unit meets related conditions, especially the
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conditions of the processing equipment and personnel directly related to the repair work. If you
repair the device by yourself, learn relevant regulations and standards first.
The inspection and repair of the flameproof enclosure should be carried out in accordance with
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the current national technical regulations. Do not modify and replace the shell structure, the
materials and dimensions of the main components, such as explosion-proof joint surfaces,
dome cover and encapsulation components, cable entry devices, fasteners. Destruction of
explosion-proof performance, such as drilling holes in the shell, shall not be carried out without
the agreement of the inspection agency and the manufacturer.
If there are any doubts about the repair method, ask the manufacturer or the explosion-proof
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inspection unit.
Cut off the power before camera maintenance and overhaul, and consult after-sales service to
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make sure that the device installation area is safe.
Make sure that the power is off when you connect the cables, install or uninstall the Camera.
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If the Camera will not be used for a long time, unplug the power cable.
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Keep the packing box well for future transportation.
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1.7.2 Preparation
Before repair: Clarify the maintenance content and prepare the tools, materials and instrument
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needed; cut off the power first and confirm the scope of the power outage; distinguish the
nature of the overhaul site, the degree of danger in the explosion hazard place, and category of
hazardous area.
When inspecting and repairing in explosion-hazardous area, the specified explosion-proof tools
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are needed. The instruments used for inspection and repair must also be explosion-proof.
In allowed conditions, move the explosion-proof cameras that need to be overhauled away from
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the original area for repair.
When disassembling and assembling parts related to explosion-proof performance, the
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explosion-proof performance of other parts must not be damaged. Explosion-proof surface
cannot have any scratches.
Carry out a comprehensive inspection and debugging before putting the device into use after
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maintenance. In case of restoring electrical performance, the Camera can be put into operation
only if the explosion-proof performance is restored.
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Quick Start Guide