Ewent EW3991 User manual

EW3991
150W Power Inverter 12V to 230V

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EW3991 - 150W Power Inverter 12V to 230V
Table of contents
1.0 Introduction ...........................................................................................................2
1.1 Functions andfeatures..................................................................................2
1.2 Packing contents...........................................................................................3
2.0 Using the inverter ..................................................................................................3
2.1 Using the Inverter with cigarette lighter input(CLA).......................................3
2.2 Using the built-in USB port............................................................................4
2.3 Hints for optimal battery usage......................................................................4
3.0 Frequently Asked Questions and other related information....................................4
4.0 Service and support...............................................................................................5
5.0 Warning and points of attention.............................................................................5
6.0 Warranty conditions...............................................................................................7
1.0 Introduction
Congratulations with the purchase of this high-quality Ewent product! This product
has undergone extensive testing by Ewent’s technical experts. Should you
experience any problems with this product, you are covered by a two-year Ewent
warranty. Please keep this manual and the receipt in a safe place.
Register your product now on www.ewent-online.com and receive product updates!
1.1 Functions and features
The EW3991 is a 12 Volts DC inverter. Combined with a battery, such as the battery in
your car, boat or camper, you are able to power a 230-Volt AC device. You can use a
lot of devices on the EW3991 such as your television, your media player (EM7180),
notebook, cool box, radio and many otherdevices.
The EW3991 also offers an extra USB port which allows you to charge many types of
USB devices such as your mobile Phone, MP3 Player, portable game console and
many more.
Since the EW3991 also has a built-in fan to prevent overheating, this device can be
used in warm environments. Ideal when you are on holiday.
The EW3991 has a power surge protection, low voltage protection and the EW3991
has an extra fuse for optimum protection. Thanks to this 3-way security system, there
is no need to worry about your (connected)devices.

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The EW3991 offers the followingspecifications:
•Input power: 12V DC
•Output Power: 230V AC, 50Hz
•Maximum capacity: 150W, 300W Peak Power (Peak Power: Some devices
require more power at start-up compared to the average power consumption of
the device. The EW3991 can handle peak power up-to 300W for a short
amount of time.)
•USB port: 5V, 500mA
1.2 Packing contents
The following parts need to be present in thepacking:
•EW3991 12V Inverter with cigarette lighter input(CLA)
•User manual
2.0 Using the inverter
Turn off your EW3991 using the switch on the back, when not inuse.
2.1 Using the Inverter with cigarette lighter input(CLA)
Follow the instructions below to use your EW3991 with the cigarette lighter input
(CLA).
1. Check if the Watt requirement of the device you want to use with the EW3991
does not exceed 1500 Watts. (The wattage should be shown on the device you
want to use, or on the power adapter of thedevice.)
2. Check if the EW3991 is powered off. The red switch on the back needs be set
to the ‘Off’ position.
3. Take the inverter with cigarette lighter input (CLA). You will notice two cables,
each cable has it’s own color.
4. Connect the inverter with cigarette lighter input to the cigarette lighter of your car,
boat, camper or another powersource.
5. Connect the device you want to use to the 230V power output of your
EW3991. Do not turn the device on yet if possible.
6. Turn the ignition of your car or boat to the ‘On’ position using the ignitionkey.
7. Switch the power button of the EW3991 to the ‘On’ position. The greenpower
LED of the EW3991 will be lit.
8. The connected device should receive power. Turn on thedevice.
Please check the Watt requirements of the device you wish to use with your
EW3991. Do not use your EW3991 in combination with devices that require more
than 150 Watts. Although the EW3991 can handle peak power up-to 300W, the
average power consumption may not exceed 150W. Eminent is not responsible for
direct or indirect damage to equipment that is used with the EW3991, or damage to
the EW3991itself as a result of improper use.

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2.2 Using the built-in USB port
The EW3991 is equipped with an additional USB port which can be used to
power USB devices. Since the USB port of the EW3991 supplies 5 Volts DC
at 500mA, mobile phones, MP3 players, portable gaming devices and other
devices can be charged using the USB port of theEW3991.
2.3 Hints for optimal battery usage
Your EW3991 uses power from the battery it is connectedto.
A fully charged car battery (rated 40Ah) can power a 150W device for
approximately 2 hours. More powerful batteries allow for extended usage of the
connecteddevice.
It is not recommended to fully discharge the battery, as this will shorten the
lifespan of the battery.
To establish the amount of hours you can use a certain device, you can
use the following formula:
8 x Battery capacity / usage in Watt = number of
hours Example: 40Ah Battery, device uses 150
Watts:
8 x 40 / 150 = approximately 2.13hours
3.0 Frequently Asked Questions and other
related information
The latest Frequently asked questions for your product can be found on the support
page of your product. Ewent will update these pages frequently to assure you have
the most recent information. Visit www.ewent-online.com for more information about
your product.
The maximal Wattage you can use on the EW3991 depends on the rating of the
fuse used between the battery and cigarette lighter. If this fuse is rated too low,
using the full 150 Watts will cause the fuse to blow. For example: a 30 Amps fuse
can be used with devices up to 300Watts.

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4.0 Service and support
This user’s manual has been carefully written by Ewent’s technical experts. If you
have problems installing or using the product, please fill out the support form at the
website www.ewent-online.com
You can also contact us by phone. Please check www.ewent-online.com for the
helpdesk phone number and opening hours.
5.0 Warning and points of attention
Due to laws, directives and regulations set out by the European parliament, some
(wireless) devices could be subject to limitations concerning its use in certain
European member states. In certain European member states the use of such devices
could be prohibited. Contact your (local) government for more information about this
limitations.
Always follow up the instructions in the manual*, especially where it concerns devices
which need to be assembled.
Warning: In most cases this concerns an electronic device. Wrong/improper use may
lead to (severe) injuries!
When you connect the device to the mains, make sure it will not be damaged or
subject to (high) pressure.
A power socket is needed which should be close and easy accessible from the device.
Repairing of the device should be done by qualified Ewent staff. Never try to repair the
device yourself. The warranty immediately voids when products have undergone self-
repair and/or by misuse. For extended warranty conditions, please visit our website at
www.ewent-online.com/warranty
Dispose of the device appropriately. Please follow your countries regulation for the
disposal of electronic goods.
Please check below safety points carefully:
- Do not apply external force on the cables
- Do not unplug the device by pulling the power cable
- Do not place the device near heating elements
- Do not let the device come in contact with water of other liquids
- If there is any strange sound, smoke or odor, remove the device immediately from
the power outlet.
- Do not put any sharp objects into the venting hole of a product
- Do not use any damaged cables (risk of electric shock)

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- Keep the product out of reach of children
- Wipe off the product with soft fabric, not water mop.
- Keep the power plug and outlet clean
- Do not unplug the device form the power outlet with wet hands
- Unplug the device when you don’t use it for a long time
- Use the device at a well ventilated place
*Tip: Ewent manuals are written with great care. However, due to new technological
developments it can happen that a printed manual does not longer contain the most
recent information.
If you are experiencing any problems with the printed manual or you cannot find what
you are looking for, please always check our website www.ewent-online.com first for
the newest updated manual.
Also, you will find frequently asked questions in the FAQ section. It is highly
recommended to consult the FAQ section. Very often the answer to your questions will
be found here.

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6.0 Warranty conditions
The two-year Ewent warranty applies to all Ewent products, unless mentioned
otherwise before or during the moment of purchase. After buying a second-hand
Ewent product the remaining period of warranty is measured from the moment of
purchase by the product’s initial owner. Ewent warranty applies to all Ewent products
and parts, indissolubly connected or mounted to the product it concerns. Power supply
adapters, batteries, antennas and all other products not directly integrated in or
connected to the main product or products of which, without reasonable doubt, can be
assumed that wear and tear during use will show a different pattern than the main
product, are not covered by the Ewent warranty. Products are not covered by the
Ewent warranty when exposed to incorrect/improper use, external influences or when
opening the service parts of the product by parties other than Ewent. Ewent may use
refurbished materials for repair or replacement of your defective product. Ewent
cannot be held responsible for changes in network settings by internet providers. We
cannot guarantee that the Ewent networking product will keep working when settings
are changed by the internet providers. Ewent cannot guarantee the working of web
services, apps and other third party content that is available through Ewent products.
Ewent products with an internal hard disk have a limited warranty period of two years
on the hard disk. Ewent could not be held responsible for any data lost. Please make
sure that if the product stores data on a hard drive or other memory source, you will
make a copy before you return the product for repair.
When my product gets defective
Should you encounter a product rendered defective for reasons other than described
above: Please contact your point of purchase for taking care of your defective product.
EW3991_R0 EN | 10-2016