Pure Sine Wave Generators DG-3500 User manual

Digital Inverter Generator
DG-3500
OPERATING INSTRUCTIONS
PLEASE READ THIS MANUAL CAREFULLY
BEFORE USING MACHINE

PREFACE
Thank you for using our generator.
This manual includes the operation and maintenance of DG-3500
All information in this publication is based on the latest product information available at the
time of approval for printing. We reserve the right to make changes at any time without notice
and without incurring and obligation. The copyright of this manual belongs to our company. No
parts of this publication may be reproduced without written permission.
This manual should be considered a permanent part of the generator and should remain with it
if it is resold.
Pay special attention to statements preceded by the following words:
WARNING
It indicates a strong possibility of severe personal injury or death if instruction is not followed.
CAUTION
It indicates a strong possibility of severe personal injury or death if instruction is not followed.
If a problem should arise, or if you have any questions about the generator, consult an
authorized dealer.
BECAREFUL
The generator are designed to give safe and dependable service if operated according to
instructions, read and understand the Owner’s manual before operating the generator. Failure
to do so could result in personal injury or equipment damage.

Ⅰ.Safety Instruction
WARNING
◆The generator is designed to give safe and dependable service if
operated according to instructions. Read and understand this manual
carefully before operating the generator or it may cause serious injury
and equipment damage.
WARNING
◆Exhaust contains poisonous carbon monoxide. Do not operate
generator in confined environment or with an aerator. Only use outdoors and far from open
windows doors and vents.
WARNING
◆The muffler becomes very hot during operating and remains hot for a
while after stopping the engine. Be careful not to touch the muffler while
it is hot. Let the engine cool before storing the generator indoor.
◆The engine exhaust system will be heated during operation and remain
hot immediately after stopping the engine. To prevent scalding, pay more
attention to the warning marks attached to the generator.
BE CAREFUL
◆Do not parallel connect other cables to receptacles, use special jack, or
it may cause an electrical shock.
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WARNING
◆Gasoline is extremely flammable and is explosive under certain conditions.
Refuel in a ventilated area with engine stopped.
◆Keep away from cigarette, smoke and sparks when refueling the generator.
Always refuel in a well-ventilated location.
WARNING
◆Connection for standby power to a building electrical system must be made by a qualified
electrician. The connection must isolate the generator from utility power, and must comply
with all applicable laws and electrical codes. Improper connections to a building electrical
system can allow electrical current from the generator to backfeed into the utility lines.
Such backfeed may electrocute utility company workers or others who contact lines during
a power outage and the generator may explode, or cause fires when utility power is
restores.
WARNING
◆To avoid accidents and equipment damage, check generation system every time before
starting engine.
◆Keep the generator a distance at least 1 meter from other equipment or other equipment
during operation.
◆Keep the generator horizontal when running. If generator tiled, it may cause fuel spillage.
◆Generator operators must be trained, muse know how to stop the generator quickly and
understand the operation of all controllable parts. Untrained operators should not be allowed
to use this equipment.
◆Keep children and pet away from operation area.
◆Keep away from rotating parts during operation.
◆The generator is a potential source of electrical shock when misused. Do notoperate it with
web hands or in any wet location.
Do not operate the generator in rain or snow and let it get wet.

CONENT
DG-3500
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DIGITAL INVERTER GENERATOR 3500W
Warning
Read this manual carefully before using the machine, for your own safety.
Your power tool should only be passed on with these instructions.
1 COMPONENT IDENTIFICATION
1. Fuel cap 9. Overload indicator light
2. Air vent knob 10. Output indicator light
3. Choke knob 11. Oil alert indicator light
4. Control panel 12. Eco throttle switch
5. Starting grip 13. Engine switch
6. Fuel valve grip 14. DC socket
7. Maintenance covers 15. DC circuit breaker
8. AC socket 16. Grounding terminal
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Control panel
Smart Throttle
Engine speed is kept at idle automatically when the electrical appliance is
disconnected and it returns to the proper speed to power of the electrical load when
electrical appliance is connected. This position is recommended to minimize the fuel
consumption while in operation.
SAFETY INSTRTCTIONS
·The generator is designed to give safe and dependable service if operated
according to instructions..
·Read and understand the Owner’s Manual before operating the generator. Failure to
do so could result in personal injury or equipment damage.
·Exhaust gas contains poisonous carton monoxide .Never run the generator in an
enclosed area. Be sure to provide adequate ventilation.
·The muffler becomes very hot during operation and remains hot for a while after
stopping the engine. Be careful not to touch the muffler white it is hot. Let the
engine cool before storing the generator indoors.
·The engine exhaust system will be heated during operation and remain hot
immediately after stopping the engine. To prevent scalding, pay attention to the
warning marks.
·Gasoline is extremely flammable and explosive under certain conditions. Refuel in a
well-ventilated area with the engine stopped.
·Keep away from cigarette, smoke and sparks when re-fueling the generator, Always
refuel in a well ventilated location.
·Wipe up spilled gasoline at once.
·Connections for standby power to a building’s electrical system must be made by a
qualified electrician and must comply with all applicable laws and electrical codes.
Improper connections can allow electrical current from the generator to back feed
into the utility lines.
2

3. SAFETY LABEL LOCATIONS
These labels warn you for potential hazards that can cause serious injury. Read the labels and
safety notes and precautions described in the manual carefully.
If a label comes off or becomes hard to read, contact your dealer for a replacement.
PRE-OPERATION CHECK
Be sure to check the generator on a level surface with the engine stopped.
4.1 Check the engine oil level
Using non-detergent oil or 2-stroke engine oil could shorten the engine’s service life.
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Use high-detergent, premium quality 4 –stroke engine oil, certified to meet or exceed
U.S. automobile manufacturer’s requirements for API Service Classification SG.
SF.(15W40)
Select the appropriate viscosity for the average temperature in your area.
Ambient Temperature
Loosen the cover screw and remove the left side maintenance cover. Remove the oil
filer cap, and wipe the dipstick with a clean rag. Check the oil level by inserting the
dipstick in the filler hole without screwing it in..
If the oil level is below the end of the dipstick, refill the recommended oil up to the top
of the oil filer neck.
The Oil Alert System will automatically stop the engine before the oil level
falls below the safe limit. However, to avoid the inconvenience of an
unexpected shutdown, it is still advisable to visually inspect the oil level
regularly.
4

4.2 Check the fuel level
Turn the fuel cap lever to “OFF” position before transporting.
Use automotive fuel (Unleaded or low leaded is preferred to minimize combustion
chamber deposits).
!! Don’t use fuel-containing alcohol: Fuel system damage or engine performance
problems resulting from the use of fuels that contain alcohol are not covered under
the warranty.
Never use an oil/gasoline mixture or dirty gasoline.
Avoid getting dirt, dust or water in the fuel tank.
After refueling, tighten the fuel filler cap securely.
Gasoline is extremely flammable and is explosive under certain conditions.
Refuel in a well-ventilated area with the engine stopped.
Do not smoke or allow flames or sparks in the area where the engine is refueled or
where gasoline is stored.
Do not overfill the fuel tank. After refueling, make sure the tank cap is closed properly
and securely.
Be careful not to spill fuel when refueling. Spilled fuel or fuel vapor may ignite. If any
fuel is spilled, make sure the area is dry before starting the engine.
Avoid repeated or prolonged contact with skin or breathing of vapor. KEEP OUT OF
REACH OF CHILDREN
4.3 Check the air cleaner.
Check the air cleaner element to be sure it is clean and in good condition.
1. Loosen the cover screw and remove the left side maintenance cover.
2. Press the latch lab on the top of the air cleaner body, remove the air cleaner
cartridge, and check the element.
3. Clean or replace the element if necessary.
5

Never run the engine without the air cleaner. Rapid engine wear will result from
contaminants. Such as dust and dirt, being drawn through the carburetor, into the
engine.
It is normal for a little oil to appear under the air filter box if the generator is running
for a long period of time, or a lot of oil is in the engine. Wipe up excess oil after each
use and after stopping the generator.
GENERATOR USE
5.1 Starting the engine
Before starting the engine, disconnect any load from the DC receptacle.
Turn the fuel cap lever fully clockwise to the ON position.
2. Set the fuel valve in the “ON” –position.
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3. To start a cold motor shove the choke lever all the way to the left. To restart a hot motor set
the choke lever halfway.
Choosing the right choke position is the key to starting the motor. You may have to
practice a few times to use the choke correctly.
Shove the choke completely to the right to restart a hot motor.
Shove the choke to about halfway to restart a warm motor.
A hot motor will not start if there is too much fuel in the cylinder. If this
happens, wait five to ten minutes before trying again. Shove the choke
completely to the right and the motor should start.
4. Set the motor switch in the "ON'-position.
5. Pull slightly on the start cord until you feel resistance and then yank hard and
swiftly,
Do not let the start cord retract by itself: guide it back by hand.
Hold the carrying handle firmly to prevent the generator from falling over
when you pull the start cord.
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6. After the engine starts, allow the engine to run continuously and warm up.
7. Press the choke in completely after the engine is started.
If the engine stops and will not restart, check the engine oil level
before troubleshooting in other areas.
Move to the right to deactivate
Before using the device once it is connected, switch off the ECO
switch.
5.2 High altitude operation
At high altitude, the standard carburetor air –fuel mixture will be excessively rich.
Performance will decrease, and fuel consumption will increase.
High altitude performance can be improved by installing a smaller diameter main fuel
jet in he carburetor and readjusting the slow tempo screws. If you always operate the
generator at altitudes higher than 1,500 m (5,000 feet) above sea level, have your
dealer perform these carburetor modifications.
Even with suitable carburetor jetting, engine horsepower will decrease approximately
3.5% for each 300m (1,000 feet) increase in altitude. The effect of altitude on the
horsepower will be greater than this if no carburetor modification is made.
Operation of the generator at an altitude lower than the carburetor is
jetted for may result in reduced performance, overheating, and serious
engine damage caused by an excessively lean air/fuel mixture.
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5.3 Generator use
5.3.1 Warning!
■To prevent electrical shock from faulty appliances , the generator should be
grounded. Connect an electric conductor (cable) of at least 1.5mm2between the
generator’s ground terminal and an external ground source.
■Connections for standby power to a building’s electrical system must be made
by a qualified electrician and must comply with all applicable laws and electrical
codes. Improper connections can allow electrical current from the generator to
back feed into the utility lines. Such back feed may electrocute utility power is
restored; the generator may explode, burn, or cause fires in the building’s
electrical system.
■Do not exceed the current limit specified for any one receptacle
■Do not connect the generator to a household circuit . This could cause the
damage to the generator or to electrical appliances in the house.
■Do not modify or use the generator for other purpose than it is intended for .
Also observe the following when using the generator.
—Do not connect generators in parallel. —Do not connect an extension to
exhaust pipe.
When an extension cable is required, be sure to use a rubber sheathed flexible
cable,
Limit length of extension cables; 60m for cables of 1.5mm2 and 100m for cables
of 2.5mm2.
Keep the generator away from other electric cables or wires such as distribution
network.
The DC receptacle can be used while the AC power is in use. If you use both at
the same time, be sure not to exceed the total power for AC and DC.
Most appliance motors require more than their rated wattage for start-up.
5.4 AC applications
1. Start the engine and make sure the output indicator light (green) illuminates.
2. Confirm that the appliance to be used is switched off, and plug in the
appliance.
Substantial overloading that continuously lights the overload indicator light (red) may
damage the generator. Marginal overloading that temporarily lights the overload indicator
light (red) may shorten the service life of the generator.
Be sure that all appliances are in good working order before connecting them to the
generator, if an appliance begins to operate abnormally, becomes sluggish, or stops
suddenly, turn off the generator engine switch immediately. Then disconnect the
appliance, and examine it for signs of malfunction。
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5.5 Output and Overload indicators.
The output indicator light (green) will remain lighted during normal operating
conditions.
If the generator is overloaded or of here is a short in the connected appliance, the
output indicator light (green) will go OFF, the overload indicator light (red) will go ON
and current to the connected appliance will be shut off.
Stop the engine if the overload indicator light (red) switches ON and investigate the
overload source.
Before connecting an appliance to the generator. check that it is in
good order, and that its electrical rating does not exceed that of the generator.
Then connect the power cord of the appliance, and start the engine.
Be sure all equipment is turned off before plugging in the power cord.
When an electric motor is started, both the overload indicator lights (red) and the
output indicator light (green) may go on simultaneously. This is normal if the overload
indicator light (red) goes off after about four seconds.
If the overload indicator light (red) stays on, consult your dealer.
Connect the ground terminal。
Start engine according to “STARTING THE ENGINE”
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When the output indicator light (green) does not light and the overload
indicator light (red) lights instead, set the engine switch to STOP, stop the
engine at once and then start the engine again.
3. Confirm that the equipment to be used is switched off, and insert the plug of the
equipment to be used into the AC receptacle unit A.
Check that the equipment to be connected is switch off. When the
equipment to be used is switched on, it will operate suddenly, and
injuries or accidents may be caused.
4. Switch on the equipment output indicator light will glitter (light). In case of overload
operation or when trouble occurs for the equipment being used, the output indicator
light (green) will go out, the overload indicator light (red) will light continuously, and
no power will be put out. At this time, the engine will not stop, so that the engine must
be stopped by setting the respective engine switch to STOP.
When equipment requires a large starting power, the overload
indicator lights (red) and the output indicator light (green) may light
together for a short time, but this is no abnormality. After start of the
equipment, the overload indicator light (red) will go out and the output
indicator light (green) will stay lit.
5.6 DC applications
For charging 12V automotive batteries:
The generator cannot sense a sensibility load with the same power, which the
manual indicates. It only can sense 40%-70% power, which the manual
indicates.
The generator cannot sense a sensibility load with the same power which the
manual indicates。It only can sense 40%-70%pwoer which the manual
indicates。
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·When using the DC output, turn Smart Throttle to the OFF position. The DC current
will be below 5A if turning on the Smart Throttle without AC current output.
·When charging batteries, person must be present to monitor the voltage. Stop
charging when the voltage of the batteries is above 16V. Or it may cause battery
explosion, resulting in serious injury or death.
·To prevent the possibility of creating a spark near the battery, connect charging
cable first to the generator, then to the battery. Disconnect cable first at the battery.
·Before connecting charging cables to a battery that is installed in a vehicle,
disconnect the vehicles grounded battery cable. Reconnect the vehicle’s grounded
battery cable after the charging cables are removed. This procedure will prevent the
possibility of short circuit and sparks if you make accidental contact between a
battery terminal and the vehicle’s frame or body.
·Do not attempt to start an automobile engine while the generator still connected to
the battery. The generator may be damaged.
·Connect the positive battery terminal to the positive charging cord. Do not re-verse
the charging cables, or serious damage to the generator and/or the battery may
occur.
·The battery gives off explosive gases; Keep spark, flames and cigarettes away.
Provide adequate ventilation when charging.
·The battery contains sculpture acid (electrolyte). Contact with skin or eyes may
cause severe burns. Wear protective clothing and a face shield.
If electrolyte gets on your skin, flush with water.
If electrolyte gets in your eyes, flush with water for at least 15 minutes and call a
physician.
If swallowed, drink large quantities of water or milk and follow with milk or
magnesia or vegetable oil and call a physician.
·KEEP OUT OF THE REACH OF CHILDREN, PETS AND UNTRAINED PEOPLE.
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5.7 Start the engine
·The DC receptacle may be used while the AC power is in use.
·An overloaded DC circuit will trip the DC circuit protector. If this happens, dishoard
the DC load before pushing in the circuit protector to resume operation.
5.8 Oil alert system
·The oil alert system is designed to prevent engine damage caused by an insufficient
amount of oil in alert system will automatically shut down the engine (the engine
switch will remain in the ON position).
·If the oil alert system shuts down the engine, the oil alert indicator light (red) will
come on when you operate the starter, and the engine will not run. If this occurs,
add engine oil.
5.9 Stopping the engine
To stop the engine in an emergency, turn the engine switch to the OFF position.
In normal use:
1. Switch off the connected equipment and pull the inserted plug out.

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2. Turn the engine switch to the OFF position
3. Turn the cap lever fully counter clockwise to the "OFF" position.
Be sure both the fuel cap lever and the engine switch are in "OFF"
position when stopping, transporting and/or storing the generator.

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6 MAINTENANCE
·The purpose of the maintenance and adjustment schedule is to keep the generator
in the best
Operating condition.
·Inspect or service as scheduled in the table below.
Shut off the engine before performing any maintenance, If the engine
must be run, make sure the area is well ventilated, if the engine must be run,
make sure the area is well ventilated, The exhaust contains poisonous carbon
monoxide gas.
Use authorized parts or their equivalent .The use of replacement
parts which are not of equivalent quality may damage the generator.