Shindaiwa DG150MI User manual

- 1 -
1
Safety Guidelines
2
Specifications
2.1 Specification Matrix
2.2 Ambient Condition
3
Use
4
Parts
4.1 External View
4.2 Control Panel
5
Equipment
5.1 Monitor Display
5.2 Gauges
5.3 Fuel Line Changeover Valve
6
Transportation and installation
6.1 Transportation
6.2 Installation
7
Connection
7.1 Selecting Cable
7.2 Connecting Cable
7.3 Earth Leakage Relay and Grounding
8
Initialization and Pre-check
8.1 Checking Engine Oil
8.2 Checking Coolant/Water
8.3 Checking Fan Belt
8.4 Checking Fuel
8.5 Checking Fuel, Engine oil,
and water leakage
8.6 Checking Battery
9
Operation
9.1 Initializing / Preparation
9.2 During Operation
9.3 Stopping Generator
9.4 Protection Features
9.5 Connecting to External Fuel Tank
10
Maintenance
11
Long-term Storage
12
Troubleshooting
13
Generator Wiring Diagram
14
Engine Wiring Diagram
Sound Proof
Diesel Engine Generator
OWNER’S AND
OPERATOR’S MANUAL
DG150MI
DG250MI
CAUTION : Do not operate the Generator, or any other appliance,
before you have read and understood the instructio
ns for use.
Table of Contents
Page
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- 2 -
Introduction
Thank you for purchasing Shindaiwa Sound Proof Diesel Engine Generator.
This user manual was created to ensure the safe operation of this equipment. Therefore, the manufacturer of
this equipment strongly recommends that the user follow the instructions herein, to avoid unnecessary
accidents and repairs.
Please operate this equipment after thoroughly reviewing and understanding the contents of this manual.
Please attach this manual, if the equipment will be sub-leased.
Please store this manual near the equipment for easy reference.
Following convention will be used throughout the manual to indicate the degree of
cautions.
!
Danger
Can cause severe injuries or death.
!
Caution
Can cause minor injuries or damage to the equipment or other
properties
<Caution> Other types of caution
Even some of the items noted in
!
Caution
may lead to severe injuries. Please read all items and
follow all the safety guidelines.

- 3 -
1 Safety Guidelines
!
Danger
:Suffocation from exhaust fume
Exhaust fume from the engine contains many elements harmful to human. Do not operate this
equipment in poorly ventilated area, such as inside a room or in a tunnel
!
Danger
:Electrical Shock
Do not touch the output terminals during operation.
Be sure to place covers over the output terminals and fasten with fasteners.
Do not insert metal objects (such as pin or wire) into plug-in receptacles.
Do not touch wiring or any electronic parts inside equipment during operation.
Ground the every earth grounding terminal to the earth as set out in the manual.
If even one of all is unconnected by mistake or accident, it will be much more dangerous for human
body than the NO RELAY case, because leaking current inevitably goes through the body.
Even though all the earth terminals of the loads have been grounded to the earth,
the earth grounding terminal and the outer bonnet (canopy) grounding terminal should be
grounded to the earth.
There is always a danger of being electrocuted by short-circuit. Be sure to test generator’s insulation
resistance periodically.
Before connecting or disconnecting a load cable to/from output terminals, always turn a circuit
breaker to OFF position, stop the engine, and remove the engine key. A person performing the
maintenance should always keep the key.
Before performing any equipment check or maintenance, stop the engine, and remove the engine key.
A person performing the maintenance should always keep the key.
!
Danger
:Injuries
Close all doors and place locks during operating this equipment, to avoid injuries by unintentionally
touching cooling fan and fan belt.
!
Caution
:Suffocation from exhaust fume
Do not point the exhaust fume toward pedestrians or building.

- 4 -
!
Caution
:Injuries to eyes and skin
Battery fluid contains diluted sulfuric acid. Avoid contact with eyes, skin or on clothing. If the acid comes
in contact, especially with eyes, flush with a lot of water, and contact your physician immediately.
!
Caution
:Fire
This equipment uses Diesel Oil as a fuel. When refueling, always stop the engine, and keep away from
fire. Moreover, always wait until the engine cools down before refueling.
Always wipe any drip of Diesel fuel or Lubrication oil. Do not use this equipment when a leak is found.
Repair the equipment before use.
Temperature around muffler and exhaust can get extremely high. Keep any inflammable items (such as
fuel, gas, paint, etc.) away from the equipment.
Battery may emit some combustible gas, so keep it away from fire and sparks.
Always operate this equipment on flat surface and, at least 1 meter away from any objects (wall, box,
etc.).
Do not connect AC output to any indoor wiring.
Always wait until the equipment cools down, before placing any covering materials for storage.
!
Caution
:Burns
Do not open the radiator cap while operating this equipment or immediately after stopping the equipment,
to avoid sustaining burns from hot vapor.
Do not touch the engine and muffler during operation and immediately after stopping the equipment, for
the temperature can reach extremely high.
When checking engine oil or changing oil, always stop the engine, and wait until the engine cools down.
If you open either the oil gauge or the oil filler cap during operation, hot oil may cause some injury.
!
Caution
:Injuries
When lifting the equipment, always use a lift hook.
Do not use Side rope-through, for it may cause equipment to drop.
Always place the equipment on a flat and stable surface, to keep the equipment from sliding.
When starting the engine, turn off the connected equipment and set the circuit breaker to OFF position.
Do not move the equipment during operation.
When performing equipment check and maintenance, always stop the engine.
Do not operate the equipment, if the equipment is being modified or if the parts are removed.

- 5 -
Location of Warning labels
When the warning labels become unreadable or damaged, place new labels on the appropriate location, as
specified in the following figure. When ordering the label, use following part numbers.
1
Safety guidelines Part Number 19402-00188
2
Suffocation from exhaust fume Part Number 19402-00161
3
Electrical Shock Part Number 19402-00163
4
Injuries Part Number 19402-00167
5
Injuries Part Number 19402-00162
6
Burns Part Number 19402-00165
7
Burns Part Number 19402-00164
8
Fire Part Number 19402-00166
9
Lift points Part Number 19401-00153
10
Tie (Sleeper) Marker Part Number 19401-00207
11
Bonnet Grounding Terminal Part Number 19401-00206

- 6 -
2 Specifications
2.1 Specification Matrix
Name of Generator DG150MI DG250MI
Type Unit Blushless, Rotating Field, 3-Phase, 4-Pole,
Synchronous AC Generator
kVA
12.5 15 20 25
Rated Output kW 10 12 16 20
Rated Voltage (or the below) V 200 220 200 220
Rated Current (or the below) A 36.1 39.4 57.7 65.6
Rated Voltage V 400 440 400 440
Rated Current A 18 19.7 28.8 32.8
Frequency Hz 50 60 50 60
Rated speed min
-1
1500 1800 1500 1800
Winding - 3-phase, 4-wire, Star with neutral
Power factor % 80
Insulation class - F
Excitation - Self-excitation with AVR
Alternator
No. of poles - 4
Types - Vertical Water-cooled 4-cycle Diesel Engine
Model (Manufacturer) - 3LD1(ISUZU) AA-4LE1(ISUZU)
No. of Cylinders (bore x stroke)
mm 3 (83.1 x 92) 4 (85 x 96)
kW 12.6 14.9 19.1 23.5
Continuous rated output PS 17.1 20.3 26 32
Rated speed min
-1
1500/1800
Displacement L 1.496 2.179
Combustion system - Swirl Chambered
Cooling method - Radiator
Lubricating method - Forced lubrication
Starting method - Electric start
Fuel - Diesel Fuel
（ ASTM No. 2-D ） or Equivalent
Lubricant oil - CD class
Fuel tank capacity L 65
Lubricant volume (Full) L 7.4 8.5
Cooling water volume L 5.8 8.6
Starting motor capacity
V- kW
12 - 1.2 12 - 1.8
Charging dynamo capacity V-A 12-20
Engine
Battery - 80D26R x 1 75D31R x 1
Volt/Freq/Amp meter - O O
Operation
Device
Voltage regulator - O O
Oil pressure, Water temp. - Lamp indication (Engine stops)
Protection
Device
Battery charge - Lamp indication
Hour meter - O O
Control
Panel
Dimensions (L x W x H) mm 1390 x 650 x 890 1550x 650 x 890
Unit
Dry weight kg 493 566

- 7 -
2.2 Ambient Condition
Use the equipment under the following ambient condition. The other condition may cause
trouble, insufficient output power or deterioration of durability.
■ Ambient Temperature: -15ºC ～ 40ºC
■ Humidity : less than 80%
■ Altitude : less than 300m
3 Use
Power source for construction –use equipment, such as submersible pump
Power source for lighting
Power source for electric tools and home appliances
4 Parts
4.1 External view

- 8 -
4.2 Control panel
[DG150MI] [DG250MI]
No.
Name No.
Name
1 3-Phase Circuit Breaker 11 Monitor Indication Lamp
2 Pilot Lamp 12 Water Temperature Gauge
3 Single-Phase Circuit Breaker 13 Tachometer
(Hour Meter incorporated)
4 Earth Leakage Relay 14 Oil Pressure Gauge
5 Voltage Meter 15 Preheat Lamp
6 Amp. Meter 16 Emergency Stop Button
7 Frequency Meter 17 Throttle Handle
8 Panel Light 18 Starter Switch
9 Panel Light Switch 19 Hour meter
10 Voltage Regulator

- 9 -
5 Equipment
5.1 Monitor Display
[DG250MI] [DG150MI]
+
++
+ -
--
-
WATER TEMP OIL PRESS CHARGE AIR FILTER
FUEL LEVEL
+
++
+ -
--
-
BATTERY LOW LEVEL
DG250MI is equipped with monitoring function for water/coolant temperature, oil pressure, battery charge, air
filter flow, battery fluid level, and fuel level. DG150MI is equipped with monitoring function for water/coolant
temperature, oil pressure and battery charge.
When the equipment is started under normal condition, Oil Pressure and Battery Charge lamps will flash when
the Starter Switch is turned from STOP to OPERATING, and all lamps will go off, immediately after the engine
is started.
When the abnormality is detected either in water temperature or in oil pressure, the corresponding monitor
lamp will flash, and the automatic shutoff shall be engaged.
When the automatic shutoff is engaged, turn the starter switch to STOP position, then restart the engine.
When the automatic shutoff is engaged next time, check all parts of the corresponding alarm.
5.1.1 Water Temperature Monitoring Lamp (for temperature High)
!
Danger
: Injuries
Close all doors and place locks during operating this equipment, to avoid injuries by
unintentionally touching cooling fan and fan belt.
!Caution
: Burns
Do not open the radiator cap while operating this equipment or immediately after
stopping the equipment, to avoid sustaining burns from hot vapor.
Do not touch the engine and muffler during operation and immediately after stopping
the equipment, for the temperature can reach extremely high.

- 10 -
When the water temperature reaches 110 degrees Celsius during operation,
the water temperature-monitoring lamp will flash, and the automatic shutoff will be engaged.
When this occurs, check the Coolant reservoir tank, and replenish if needed
(refer to 8-2 Checking coolant / water level).
If the water level is normal, check for loose fan belt or possible water leak in the cooling system,
after the engine is cooled down.
<Caution>
If the water level is too low, the sensor cannot detect the water temperature. Be sure
to check the water level in the radiator and the Coolant reservoir tank prior to operating
the equipment.
5.1.2 Engine Oil Monitoring Lamp (for oil pressure low)
!
Danger
: Injuries
Close all doors and place locks during operating this equipment, to avoid injuries by
unintentionally touching cooling fan and fan belt.
!
Caution
: Burns
Do not touch the engine and muffler during operation and immediately after stopping
the equipment, for the temperature can reach extremely high.
When checking engine oil or changing oil, always stop the engine, and wait until the
engine cools down. If you open either the oil gauge or the oil filler cap during operation,
hot oil may cause some injury.
When the engine oil pressure drops below 0.98 x 100kPa (1kgf/cm
2
) during operation,
the oil pressure monitoring lamp will flash, and the automatic shutoff will be engaged.
When this occurs, check the engine oil level, and replenish to the maximum level if needed
<Caution>
The engine oil pressure monitor cannot detect the degradation of engine oil itself. Please check
the engine oil periodically, and change if needed (refer to 8-1 Checking Engine Oil).

- 11 -
5.1.3 Battery Charge Monitoring Lamp (charge lamp)
When the battery is unable to be charged during operation, the battery charge-monitoring lamp
will flash.
Check the belt for damages or cut, and replace if needed.
<Caution>
For changing the belt, refer to the User Manual for Engine.
Battery Charge Monitor cannot detect the degradation of battery life nor the battery fluid
level (refer to 8-6 Checking Battery)
5.1.4 Air Filter Monitoring Lamp (clogged filter element) [DG250MI only]
!
Danger
: Injuries
Close all doors and place locks during operating this equipment, to avoid injuries by
unintentionally touching cooling fan and fan belt.
!
Caution
: Burns
Do not touch the engine and muffler during operation and immediately after stopping
the equipment, for the temperature can reach extremely high.
When the air filter element becomes dirty or clogged, the air filter monitoring lamp will flash.
Turn off the engine and clean the filter element or replace if needed.
(refer to 10. Maintenance)
5.1.5 Battery Fluid Monitoring Lamp (insufficient battery fluid) [DG250MI only]
!
Caution
: Injuries to eyes and skin
Battery fluid contains diluted sulfuric acid. Avoid contact with eyes, skin or on clothing.
If the acid comes in contact, especially with eyes, flush with a lot of water, and contact
your physician immediately.
!
Caution
: Fire
Battery may emit some combustible gas, so keep it away from fire and sparks.

- 12 -
When the battery fluid level is low, Battery Fluid Monitoring Lamp will flash.
If the lamp is flashing, quickly add some distilled water. (refer to 8.6 Checking Battery)
5.1.6 Fluid Level Monitoring Lamp [DG250MI only]
!
Caution
: Fire
This equipment uses Diesel fuel as a fuel. When refueling, always stop the engine, and
keep away from fire. Moreover, always wait until the engine cools down before
refueling.
Always wipe any drip of Diesel fuel or oil. Do not use this equipment when a leak is
found. Repair the equipment before use.
When the fuel level reaches less than 1/4 tank, Fluid Level Monitoring Lamp will flash.
If the lamp is flashing, add fuel.
<Caution>
Just after the engine started, lamp will not flash promptly even in the event of
1/4 tank level fuel, which is not malfanction.
5.2 Gauges
5.2.1 Tachometer [DG250MI only]
Tachometer displays the revolution of engine and the generator.
The frequency of the generator is 50Hz at 1500min
-1
and 60Hz at 1800min
-1
.
5.2.2 Hour Meter
Hour Meter keeps track of utilization time. Use this meter to schedule your Preventative
Maintenance. Note that the Hour Meter will operate, as long as the start switch is in ON
position, regardless of whether the engine is perating or stopped.
<Caution>
DG250MI incorporates Hour Meter in Tachometer.

- 13 -
5.2.3 Water Temperature Gauge [DG250MI only]
Water Temperature Gauge displays the temperature of engine coolant. Normal temperature
may vary depending on the environment, but it should be between 75 to 90 degree Celsius.
<Caution>
If the temperature exceeds normal value, disconnect the load, idle the engine
at 1000min
-1
, and wait until the reading falls to the normal temperature range.
5.2.4 Oil Pressure Gauge [DG250MI only]
Oil Pressure Gauge displays the pressure of engine oil. Normal pressure may vary
depending on the environment, but it should display 2.9 – 4.9 x 100kPa (3-4kgf/cm
2
).
However, under cold weather, the pressure gauge may display higher reading. Continue
idling until the pressure falls to normal range.
5.2.5 Generator Gauges
5.2.5.1 Voltage Meter
Voltage Meter displays the voltage output (Phase to Phase) from the generator.
5.2.5.2 Amp Meter
Amp Meter displays the electrical (Phase) current output from the generator.
5.2.5.3 Frequency Meter
Frequency meter will display the frequency of the power source
5.2.6 Lamp
5.2.6.1 Preheat Lamp
When the start switch is turned to <Operation or Pre-heating> position, the Preheat Lamp will
be turned. When preheating is completed, preheat lamp turns off and operation can start.
<Caution>
Pre-heating may vary depending on the environment, but it should finishes
in about 1-5 seconds.

- 14 -
2.2.6.2 Pilot Lamp [DG250MI only]
Pilot Lamp indicates whether or not the generator is generating electricity,
when the engine is driving.
5.2.7 Switch
5.2.7.1 Starter Switch
①
①①
① STOP
When the switch is set to this position, all power will be off. The switch must be
set to this position to remove the key.
②
②②
② RUN / PREHEAT
The switch must be set to this position during operation. This position is also
used during cold season, to preheat Glow Plug.
<Caution>
Do not leave the switch to this position, while the engine is stopped.
A battery discharges.
③
③③
③ START
This position will allow user to start the engine. When a user release the key,
the setting will automatically return to <Operating / Preheating> position.
5.2.7.2 Panel Light Switch
This switch turns Panel Light to ON and OFF. The switch can only be used when the
Start switch is in OPERATING position.
5.2.7.3 Emergency Stop button [DG250MI only]
This button is used to stop the engine in emergency. Keep pressing the button until the
engine comes to complete halt.
<Caution>
Keep pressing the button until the engine stops in several seconds.
After the engine stops, be sure to return the starter switch to the STOP Position.
5.2.7.4 Circuit Breaker
By turning this circuit breaker switch to ON position, power will be transferred to the
output terminal and to the load side. By turning to OFF position, it will shut down all power
to the load side, preventing overload and short-circuit, and also breaking the earth
leakage.
<Caution>
Do not use this breaker as the ON/OFF switch to the load.
The earth leakage breaking function is for 3-Phase circuit only, not 1-Phase Circuit.

- 15 -
5.2.8 Voltage Regulator and Throttle Handle
5.2.8.1 Voltage Regulator
The dial adjusts output voltage. By turning the dial clockwise, an operator can increase
voltage. By turning the dial counter-clockwise, an operator can decrease voltage.
5.2.8.2 Throttle Handle
This handle controls the engine revolution. By turning the throttle clockwise,
engine speed slows down; turning the handle counter-clockwise increases the
speed. The lock of the handle at the required position (speed) can be done by
turning the Locknut clockwise. Always lock the handle while the generator is
operating. The engine speed can also be changed to high or low by pulling the
handle all the way out or pushing all the way in, while the release button on the
knob pressed.
<Caution>
Always lock the handle while the generator is operating. Failure to do so may result in fluctuation
in frequency (engine speed).
5.2.8.3 Earth Leakage Relay Unit
Sensing the earth leakage current, the unit (relay) send a signal to the 3-phase and the
1-phase breaker to trip-off in order to shut-off the circuit to the terminals (loads).
<Refer to.7-3 Earth Leakage Relay Unit and Grounding>
5.3 Fuel Line Changeover Valve (3-way valve)
!
Caution
:Burns
Always stop the engine when performing any work on the fuel line.
Always wipe any drip of Diesel fuel or engine oil. Do not use this equipment, when leak is found. Repair
the equipment before use.
By switching the 3-way valve, you can use fuel from external fuel tank. In this case, the Diesel fuel in the
built-in tank will not be used.

- 16 -
5.3.1 Using fuel from built-in fuel tank
The lever for 3-way valve is set to Awhen the equipment is
shipped. In addition, both the external fuel intake and the
external fuel return are safeguarded with PT-3/8 plugs. Do not
remove the plugs, when using the built-
in fuel tank.
<Caution>
Always set the lever for 3-way valve back to Aposition and
cover theexternal fuel intake and return port with the supplied
plugs, after the hoses are removed.
5.3.2 Using fuel from external fuel tank
Connect hoses from the external fuel tank to the external fuel
intake and the external fuel return ports, and set the lever for
3-way valve to Bposition. You can now supply the fuel from the
external gas tank. For detail instruction, refer to 9-5 Connecting
to the external Fuel tank
6 Transport and Installation
6.1 Transportation
!
Caution
:Injuries
When lifting the equipment, always use a lift hook.
Do not use Side rope-through to attach your lift hook, for it may cause equipment to drop.
6.1.1 Lifting Equipment
Always use a Lift Hook, when lifting the equipment
for transportation.

- 17 -
6.1.2 Transportation
When transporting this equipment, make sure that the equipment is secured properly with ropes tied
to the Side Rope Through.
<Caution>
Always use extreme care when loading, unloading, and transporting the equipment.
Failure to do so may result in damages and malfunction of the equipment.
6.2 Installation
!
Danger
:Suffocation from exhaust fume
Exhaust fume from the engine contains many elements harmful to human. Do not operate this
equipment in poorly ventilated area, such as inside a room or in a tunnel
!
Caution
:Suffocation from exhaust fume
Do not point the exhaust fume toward pedestrians or building.
!
Caution
:Fire
Always operate this equipment on flat surface and, at least 1 meter away from any objects (wall, box,
etc.).
Temperature around muffler and exhaust can get extremely high. Keep any inflammable items (such as
fuel, gas, paint, etc.) away from the equipment.
Always set the equipment on hard, flat surface.
Keep the equipment at least 1m from a wall or any obstacles, to allow workable space to access the
control panel and opening of the panel door.
<Caution>
This equipment must be operated on hard and flat surface. Operating under any other conditions
may result in malfunctions.

- 18 -
Do not block the airflow from radiator vent or muffler exhaust. It may result in reduced engine
performance, overheating, or damage to the electrical parts.
Operating in dusty area or salty air (by the ocean), or any other particulate environment may result in
clogged radiator, which may cause overheating, other malfunctions and insulation deterioration.
Use extreme care, frequent checks and maintenance.
7 Connection
7.1 Selecting Cable
Select the cable with proper gauge, based on its allowable amperage and the distance between
the generator and the machinery to be connected.
!
Caution
:Electrical damages
If the load exceeds the allowable amperage, the overheating may damage the cable.
If the cable is either too long or too small a gauge, there will be greater voltage drop to loads, which may
result in reduced performance in the connected loads, malfunction, or damages.
<Caution>
It is recommended to select the proper gauge and length of cable, with consideration of the
maximum 5% marginal drop only for the rated voltage, between the terminals of loads and
generator via the cables.
■ Expedient Expression: the voltage drop of cables
○ 3-Phase 3-Wire
1 Length(m)
Voltage Drop (V) = x x Current (A) x √3
58 Gauge(mm
2
)
1-Phase 2-Wire
1 Length(m)
Voltage Drop (V) = x x Current (A) x 2
58 Gauge(mm
2
)

- 19 -
■ Selection of cable
( Example) 220V and Voltage Drop 11V
3-Phase 3-Wire Cap Tire Cable, Single Core (Unit: mm
2
)
Length
Current
50m or
below
75m 100m 125m 150m 200m
20A 3.5 5.5 8 8 14 14
40A 8 14 14 14 22 22
60A 14 14 22 22 30 38
80A 14 22 22 30 38 50
(Example) 100V and Voltage Drop 5V
1-Phase 2-Wire Cap Tire Cable, Single Core
(Unit: mm
2
)
Length
Current
50m or
below
75m 100m
10A 5.5 5.5 8
20A 8 14 22
30A 14 22 22
7.2 Connecting Cable
!
Danger
:Electrical Shock
Before connecting or disconnecting a load cable from output terminals, always turn a circuit breaker to
OFF position, stop the engine, and remove the engine key. A person performing the maintenance
should always keep the key.
!
Caution
:Fire
Do not connect AC output to any indoor wiring.
<Caution>
Divide loads into 3 circuits proportionally as possible, when using the maximum output power especially,
and connect them to each phase (R,S,T) respectively.
Be careful to limit the current under the rated current per the phase .
The 1-Phase terminals and receptacles output power are originated from the R and T Phase output
powers.

- 20 -
7.2.1 Load Connection Terminal Plate (3-Phase / 1-phase)
■ For 3-Phase Load
Terminal Voltage ： 200V / 220V (or 400V / 440V) at 50Hz / 60Hz
Load
■ For 1-Phase Load (1)
Terminal Voltage ： 115V / 127V (or 230V / 254V) at 50Hz / 60Hz
Load Load Load
■ For 1-Phase Load (2)
Terminal Voltage: 200V/220V (or 400V/440V) at 50Hz/60Hz
Load Load Load
Ｒ Ｓ Ｔ Ｏ
◯ ◯ ◯ ◯
Ｒ Ｓ Ｔ Ｏ
◯ ◯ ◯ ◯
Ｒ Ｓ Ｔ Ｏ
◯ ◯ ◯ ◯