Voltmaster VI770 User Manual

Model VI770

Digital Inverter Generator

User’s Manual

January 2015

PREFACE

Thank you for purchasing a Voltmaster® inverter generator.
This manual covers operation and maintenance of the VI770 generator.
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 any obligation.
No part 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

WARNING

CAUTION

WARNING

Failed to properly follow these precautions can result in
property damage, serious injury or DEATH
Read all labels and the owner's manual before operating
this generator.
Operate only in well ventilated areas. Exhaust gas
contains poisonous carbon monoxide, and can be
deadly. Always stop engine before refueling. Wait 5
minutes before restarting.
Check for spilled fuel or leaks. Clean and/or repair
before use.
Keep any sources of ignition away from fuel tank, at all
times.
Indicates a strong possibility of severe personal injury or
death if instructions are not followed.
Indicates a possibility of personal injury or equipment
damage if instructions are not followed. If a problem
should arise, or if you have any questions about the
generator, consult an authorized dealer.
Our generators 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.

CONTENTS

1. Safety Instructions

2. Safety Label Locations

3. Component Indentificaction

1

3

4

11. SPECIFICATIONS

Rated frequency (Hz)

Rated voltage (V)

Rated current (A)

Rated rotation speed [r/min]

Rated output (kVA)

Max. output (kVA)

4. Pre-operation Check

5. Starting the Engine

6. Generator Use

7. Stopping the Engine

8. Maintenance

9. Transporting/Storage

10. Troubleshooting

11. Specifications

12. Electric diagram

5

9

12

16

18

25

27

29

30

Engine

Type

Displacement (BorexStroke)

Compression ratio

Rated power [kW(Hp)/(r/min)]

Rated rotation speed [rpm]

Ignition system

Spark plug

Starting system

Fuel

Fuel consumption (g/kW.h)

Lube oil

Fuel tank capacity (L)

Continuous running time (hr) (at rated output)

Noise level (zero load-full load) [dB(A)/7m]

Overall dimension (LxWxH) [mm(in)]

Dry weight [kg(lbs)]

*The declared values shall consider uncertainties due to production variation and
measurement procedures.

1. SAFETY INSTRUCTIONS

WARNING

Operate carefully to ensure safety.

WARNING

Our generators are designed to give safe and

depend-able 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.

WARNING

Exhaust gas contains poisonous carbon monoxide.

Never run the generator in an enclosed area.
Be sure to provide adequate ventilation.

WARNING

The muffler becomes very hot during operation and

remains hot for a while after stopping the engine.
Be careful not to touch the muffler while it is hot.

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 attached to the generator.

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.
Usage of generator should be limited in ambient where the risk of fire may

be high.

WARNING

--

WARNING

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 company workers or others who contact the lines during a power

outage, and when utility power is restored, the generator may explode, burn,

or cause fires in the building's electrical system.

WARNING

Always make a pre-operation inspection before you start the engine. You

may prevent an accident or equipment damage.

Place the generator at least 1m(3ft) away from buildings or other

equipment during operation.

Operate the generator on a level surface.

If the generator is tiled, fuel spillage may result.

Know how to stop the generator quickly and understand operation of all
the controls. Never permit anyone to operate the generator without proper
instructions.

Keep children and pets away from the generator when it is in operation.
Keep away from rotating parts while the generator is running.
The generator is a potential source of electrical shocks when misused; do

not operate with wet hands.

Do not operate the generator in rain or snow and do not let it get wet.

--

2. SAFETY LABEL LOCATIONS

These labels warn you of potential hazards that can cause serious injury. Read
the labels and safety notes and precautions described in this manual carefully.
If a label comes off or becomes hard to read, contact your dealer for a
replacement.

Chock handle

Oil level

Model

Safety caution

Engine switch

Air inlet

Hot caution

--

3. COMPONENT IDENTIFICATION

Fuel cap lever

Chock lever

Maintenance cover

Starter grip

Engine switch

Spark plug
maintenance
cover

Oil filler cap

Control panel

Muffler

--

Control panel

Overload indicator light

Output indicator light

Low oil alarm indicator light

Smart switch

AC receptacle

Ground terminal

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.

NOTE

Smart throttle system does not operate effectively if the electrical

appliance requires the big electric power.

When high electrical loads are connected simultaneously turn the smart

throttle switch to the OFF position to re-duce voltage changes.

OFF:
Note: Smart throttle system does not operate. Engine speed is kept at thigh­speed lever.

Smart throttle
switch

ON OFF

--

4. PRE-OPERATION CHECK

Be sure to check the generator on a level surface with the engine stopped.

1. Check the engine oil level.

CAUTION

Using nondetergent oil or 2-stroke engine oil could shorten the engine's

service life.

Use a 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.

Select the appropriate viscosity for the average temperature in your area.

SAE Viscosity Grades

Ambient temperature Engine oil type

-25 -30

-15 -40

10W-30

15W-40

CAUTION

Store and use the oil carefully in order to prevent dust or dirty flowing into

the oil. If oil is overfilled, wipe it up at once.

Never mix different kinds of oil.

Remove 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 filler neck.

CAUTION

Running the engine with insufficient oil can cause serious engine damage.

The Low Oil Alarm 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.

--

Upper lever

Oil rule

Oil filler hole

Upper limit

Lower limit

2. Check the fuel level.
Use automotive gasoline (Unleaded or low-leaded is preferred to minimize
combustion chamber deposits).
If the fuel level is low, refuel the fuel tank until the level as specified.
Never use an oil/gasoline mixture or dirty gasoline.
Avoid getting dirt, dust or water in the fuel tank.
After refueling, tighten the oil rule seurely.

WARNING

Gasoline is extremely flammable and is explosive under certain conditions.
Refuel in a well-ventilated area with the engine stopped.

Do not smoke or alow flames or sparks in the area where the engine is

refueled or where gasoline is stored.

Do not overfill the fuel tank (there should be no fuel above the upper limit
mark). 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 breath-ing of vapor,

KEEP OUT OF REACH OF CHILDREN.

Fuel tank capacity: 1.55L

Fuel filler cap

Open

Upper limit mark

--

Gasoline containing alcohol

If you decide to use a generator containing alcohol (gasohol), be sure it's octane
rating is at least as high as that recommended by us. There are two types of
gasohol: one containing ethanol, and the other containing methanol. Do not use
gasohol that contains more than 10% ethanol. Do not use gasoline containing
methanol (methyl or wood alcohol) that does not also contain cosolvents and
corrosion inhibitors for methanol. Never use gasoline containing more than 5%
methanol, even if it has cosolvents and corrosion inhibitors.

CAUTION

Fuel system damage or engine performance problems resulting from the
use of fuel that contain alcohol is not covered under the warranty. We cannot
endorse the use of fuels containing methanol since evidence of their
suitability is as yet incomplete.

Before buying fuel from an unfamiliar station, try to find out if the fuel
contains alcohol. If it does, confirm the type and percentage of alcohol used.
If you notice any undesirable operating symptoms while using a gasoline
that contains alcohol, or one that you think contains alcohol, replace it by a
gasoline that you know does not contain alcohol.

3.Check the air cleaner.
Check the air cleaner element to be sure it is clean and in good condition.
Loosen the cover screw and remove the left side maintenance cover. Press the
latch tab on the top of the air cleaner body, remove the air cleaner cover, check
the element. Clean or replace the element if necessary.

CAUTION

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.

Maintenance cover

Screw

Foam filter
element

Air filter

Air filter element

Air filter cover

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