Power Adapter Safety; Cleaning And Maintenance - Huawei WS331a Quick Start Manual

Child's safety
Comply with all precautions with regard to child's safety. Letting children play with the
device or its accessories may be dangerous. The device includes detachable parts that may
present a choking hazard. Keep away from children.
Accessories
 Using an unapproved or incompatible power adapter, charger or battery may cause fire,
explosion or other hazards.
 Choose only accessories approved for use with this model by the device manufacturer. The
use of any other types of accessories may void the warranty, may violate local regulations
and laws, and may be dangerous. Please contact your retailer for information about the
availability of approved accessories in your area.

Power adapter safety

 The power plug is intended to serve as a disconnect device.
 For pluggable devices, the socket-outlet shall be installed near the devices and shall be
easily accessible.
 Unplug the power adapter from electrical outlets and the device when not in use.
 Do not drop or cause an impact to the power adapter. If it is damaged, take it to an
authorized service center for inspection.
 If the power cable is damaged (for example, the cord is exposed or broken), or the plug
loosens, stop using it at once. Continued use may lead to electric shocks, short circuits, or
fire.
 Do not touch the power cord with wet hands or pull the power cord to disconnect the power
adapter.
 Do not touch the device or the power adapter with wet hands. Doing so may lead to short
circuits, malfunctions, or electric shocks.
 If your power adapter has been exposed to water, other liquids, or excessive moisture, take
it to an authorized service center for inspection.
 Ensure that the power adapter meets the requirements of Clause 2.5 in
IEC60950-1/EN60950-1 and has been tested and approved according to national or local
standards.

Cleaning and maintenance

 During storage, transportation, and operation of the device, keep it dry and protect it from
collision.
 Keep the device and accessories dry. Do not attempt to dry it with an external heat source,
such as a microwave oven or hair dryer.
 Do not expose your device or accessories to extreme heat or cold. These environments may
interfere with proper function and may lead to fire or explosion.
 Avoid collision, which may lead to device malfunctions, overheating, fire, or explosion.
 If the device is not going to be used for an extended period of time, power it off, and
remove all cables connected to it.
 If anything unusual occurs (for example, if the device emits smoke or any unusual sound or
smell), immediately stop using it, power it off, remove all cables connected to it, and
contact an authorized service center.
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