Shindaiwa DG50MKM-P User manual

OWNER’S AND OPERATOR’S MANUAL
Vertical, Water-Cooled 4-Cycle Diesel Engine
DG50MKM-P/ANZ
X753-009 26 0
X753802-040 0
CAUTION
Do not operate the Generator, or any other appliance, before you have read and
understood the instructions for use and keep near for ready use.

Introduction
Thank you for purchasing this Shindaiwa soundproof diesel engine generator.
This manual has been created to ensure safe usage of this generator. Be sure to read
this manual before operation. Improper operation/handling of this generator will result in
an accident or malfunction.
Handling/Operation of this generator can only be performed by persons who understand
the contents of this manual and can handle/operate the generator in a safe manner.
Persons who suffer from an illness, are taking medicine or not feeling well such that safe
operation would be negatively affected must not operate this generator.
Work performed using this generator and handling/operation of this generator must be in
accordance with corresponding laws and regulations based on such laws. Consult with
the authorized distributor where this generator was purchased if you have any inquiries
regarding the corresponding laws.
Always be sure to include this manual when loaning out this generator and instruct
operating personnel to read this manual before operation.
Store this manual in a specified location where it will be secure and available for
consulting at any time. Order another copy from the authorized distributor where this
generator was purchased if this manual becomes dusty, grimy or torn.
Consult with the authorized distributor where this generator was purchased if you have
any inquiries regarding any points related to this generator and manual.
When inquiring about this generator, be sure to provide the model name and serial
number.
If disposing of this generator, do so in a manner that is in compliance with laws related to
industrial waste. Contact the authorized distributor where the generator was purchased if
you have any inquiries regarding proper disposal.
■Caution notice ranks in this manual are classified as follows.
Note that CAUTION items can also lead to major accidents under some
circumstances if not correctly followed.
All caution notices are important. Be sure to follow all of them.
WARNING : Indicates a potentially hazardous situation which, if not avoided,
can result in death or serious injury.
CAUTION : Indicates a potentially hazardous situation which, if not avoided,
can result in minor or moderate injury and property damage.
< Note >
: Other types of cautions and indications.

1
Table of Contents
1. Safety Instructions ····························································· 2
2. Specifications···································································· 5
2-1. Specifications································································· 5
2-2. Ambient Conditions ························································· 6
3. Applications ······································································ 6
4. Part Names········································································ 6
4-1. External View/Part Names ················································ 6
4-2. Operation Panel Part Names············································· 8
4-3. Output Panel ································································· 9
5. Equipment······································································· 10
5-1. Controller···································································· 10
5-2. Switches····································································· 12
5-3. Voltage Regulator ························································· 13
5-4. Fuel Piping Switch (3Way Fuel Valve) ······························· 13
6. Transporting/Installing······················································ 14
6-1. Transport Procedures ···················································· 14
6-2. Installation Procedures··················································· 15
7. Load Connections ···························································· 15
7-1. Load Cable Selection ···················································· 15
7-2. Connecting Load Cables ················································ 16
7-3. Earth Leakage Relay and Grounding ································ 16
8. Pre-Operation Inspection ·················································· 18
8-1. Checking Engine Oil······················································ 18
8-2. Checking Coolant ························································· 19
8-3. Checking the Fuel························································· 20
8-4. Checking the Spill Containment ······································· 20
8-5. Checking for Fuel, Oil and Coolant Leaks ·························· 21
8-6. Checking the Battery ····················································· 21
9. Operating Procedures······················································· 22
9-1. Initial Startup/Pre-Check················································· 22
9-2. Procedures during Operation··········································· 23
9-3. Stopping Operation ······················································· 24
9-4. Protective Functions······················································ 24
9-5. Connecting with External Fuel Tank ·································· 25
10. Inspection/Maintenance··················································· 26
11. Long-Term Storage ························································· 37
12. Troubleshooting ····························································· 38
13. Generator Circuit Diagram ··············································· 42
14. Engine Electrical Circuit Diagram ····································· 43

2
1. Safety Instructions
WARNING : SUFFOCATION FROM EXHAUST FUME
Do not operate the generator in poorly ventilated areas such as indoors or tunnels, as
the exhaust gas of the engine contains substances that are harmful to human health.
Do not direct exhaust fumes at bystanders or buildings.
WARNING : ELECTRIC SHOCK
Do not operate the equipment with any doors or covers open.
Before connecting or disconnecting the load cables to/from the output terminal, always
turn the output circuit breakers to the OFF position, stop the engine, and turn the
Power Switch to the OFF position.
Close the output terminal cover before operating.
Do not insert a pin, wire or other metal object into the electrical outlet.
Do not touch the generator if the Alternator or casing becomes wet during operation.
Do not touch output terminals or internal electric parts while the generator is operating.
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
bonnet 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.
Grounding should be made after the engine is stopped.
Whenever the Earth leakage breaker is activated, you should always repair the leaking
place first of all.
WARNING : INJURY
Close all doors and lock them during operation.
Close all doors and place locks during operating this equipment, to avoid injuries by
unintentionally touching cooling fan and fan belt.
Before performing any equipment check or maintenance, stop the engine, and turn the
Power Switch to the OFF position.
Use the lifting hook to lift the machines, and do not lift up the unit using tie-downs. Use
of such could result in the generator falling.
Do not lift any additional weight such as fuel tanks or trailers.
No persons should be under a lifted generator.
Before turning the circuit breaker to ON position, ensure that the breaker or the switch
of loads are positioned to OFF.
Operate the circuit breaker, well-communicating with the electrician by the load side.
CAUTION : EYE/SKIN INJURY
Wear rubber gloves and other protective wear to protect eyes, skin and clothing from
the battery fluid which contains diluted sulfuric acid. If the battery fluid contacts eyes or
skin, wash out immediately with a sufficient amount of clean water. Be sure to receive
medical treatment, especially if the fluid contacts the eyes.

3
CAUTION : EXPLOSION
Never use or recharge the battery if the fluid level is below the minimum level.
Do not create sparks or bring flame near the battery as it generates flammable gas.
CAUTION : FIRE
Do not bring flammable items (such as fuel, gas and paint) or items that are highly
combustible near the generator as the muffler, exhaust gas and other parts become
extremely hot.
Keep this generator 1m or more from walls or other hindrances, and on a level surface.
Do not connect the generator output to indoor wiring.
This generator uses diesel fuel. Always be sure to stop the engine and not bring flames
close when inspecting fuel or refueling. Wait until the engine has cooled before
performing such procedures.
Do not use this equipment when leak is found, and repair the leaking location before
operating.
Always be sure to wipe up any spilled fuel or oil.
Allow the generator to cool before covering with the protective cover.
Never allow flame to come close to the generator.
CAUTION : BURNS
Do not touch the engine and surrounding components immediately after stopping the
equipment, while temperature can reach extremely high.
Do not open the radiator cap immediately after stopping the engine, to avoid sustaining
burns from hot vapor.
Hot steam gushes out from the coolant sub-tank if the generator overheats. Do not
touch the coolant sub-tank.
Always be sure to stop the engine and allow the engine to cool when performing
inspection or maintenance of engine oil. Opening the oil level indicator or oil filler cap
during operation will result in hot oil cause personal injury.
CAUTION : INJURY
Always be sure to use lifting hooks when moving the generator, and lift it slowly at a
completely vertical angle.
Personnel performing lifting work must wear protective gear such as helmets, safety
shoes and gloves.
Remove the wood ties if using anchors to secure the generator.
Position the generator on a level stable surface so that it cannot slide or move in any
manner.
Before starting operation, always be sure to turn off all switches of equipment using the
generator and all breakers to OFF.
Do not move the generator during operation.
Do not operate the generator if it has been modified or any parts have been removed.

4
CAUTION : PROPERTY DAMAGE
If using this generator for medical equipment, check before use with the medical
equipment manufacturer, doctor, hospital or similar entity.
Check that the generator output setting, output terminal connection and load power
source are consistent.
Cable burnout can occur due to generated heat if the load current exceeds the
allowable current of the cable.
The voltage drop between cables is large if the cable is excessively long or thin,
resulting in decreased input voltage to equipment using the generator, thereby causing
decreased performance, faulty operation and malfunction.
Warning /Caution Label Locations
If warning or caution labels become damaged and difficult to read, replace with new labels
in the indicated locations. Order labels using part number indicated in the parenthesis.
Injury (Part no. : X505-007550)
Caution: gm spec LLC (Part no. : X505-007840)
Warning: fire (Part no. : X505-007650)
Injury (Part no. : X505-010350)
Injury (Part no. : X505-007820)
Warning caution (Part no. : X505-007571)
Burn (Part no. : X505-007830)
Electric shock (Part no. : X505-007560)
Spill containment bolt (Part no. : M707-000380)
FUEL TANK

5
2. Specifications
2-1. Specifications
Model Unit DG50MKM-P/ANZ
Alternator
Generating Type - Rotating Field, Brushless 3-Phase
Synchronous Alternator
Rated Output kVA 50
kW 40
Rated Voltage V 415
Rated Current A 69.6
Rated Frequency Hz 50
Winding - 3-Phase, 4-Wire
Power factor % 80
Insulation class - F
Excitation - Self-Excitation(Brushless)
No. of poles - 4
Engine
Types - Vertical Water-Cooled 4-Cycle Diesel Engine
Model (Manufacturer) - V3800DI-TI (KUBOTA)
No. of Cylinders (bore x stroke) mm 4 (100 X 120)
Continuous rated output kW 49.2
PS 66.9
Rated speed min-1 1500
Displacement L 3.769
Combustion system - Direct Fuel Injection with Turbo Charger
Cooling method - Radiator
Lubricating method - Forced Lubrication
Starting method - Electric Start
Fuel - Diesel Fuel （ASTM No. 2-D）
Lubricant oil - CF class
Fuel tank capacity L 420
Lubricant volume (Full) L 13.2
Cooling water volume L 12.5
Starting motor capacity V-kW 12 - 3.0
Charging dynamo capacity V-A 12 - 80
Battery - 130E41R
Unit
Length
mm
1970
Width
mm
880
Height
mm
1665
Dry Weight
kg
1315
Installed Weight
kg
1705

6
Emergency Stop Button
Lifting Hook
Tie-Down
Tie-Down
Operation Panel Door
Fuel inlet
Fuel Drain plug
Spill Containment Drain valve
Spill Containment Drain plug
2-2. Ambient Conditions
Use this generator in ambient conditions as described below. Failure to provide these
conditions can result in problems such as malfunction, insufficient output and reduced
durability.
■ Ambient temperature: -15 to 40 degree Celsius
■ Relative humidity: 85% or less
■ Elevation: 300 m or less
3. Applications
Power source for submerged pumps and similar civil engineering equipment
Power source for lighting and similar equipment
Power source for electrical tools and household appliances
4. Part Names
4-1. External View/Part Names
CAUTION : PROPERTY/SECONDARY DAMAGE
Do not use for any application other than those listed above.
If using this generator for medical equipment, check before use with the
medical equipment manufacturer, doctor, hospital or similar entity.

7
Accessories
Owners
Manual
Tie-Down
Coolant Sub-Tank
Engine Check Door
Oil Level Indicator
Oil Filter
Oil Filler
Coolant Drain plug
Oil Drain plug
3way fuel valve
External Tank Fuel Return
External Tank Fuel Inlet
Water Separator
Fuel Filter
Battery
Alternator Check Door
Air Cleaner
Radiator Plate
Radiator
Oil Separator
* Shown with side-plate removed.
Tie-Down

8
4-2. Operation Panel Part Names
①
Controller ④ Main Circuit Breaker
②
Power Switch / Air Bleeding ⑤ Battery Isolator
③
Voltage Regulator ⑥ Emergency Stop Button

9
3-Phase ELCB 1-Phase ELCB
1-Phase
Receptacle
(15A)
1-Phase Breaker (15A)
3-Phase Receptacle
(32A)
3-Phase Receptacle
(20A)
3-Phase Receptacle
(50A)
3-Phase Breaker (32A)
3-Phase Breaker (20A)
3-Phase Breaker (50A)
4-3. Output Panel

10
5. Equipment
5-1. Controller
This generator has a Controller which is used for starting or stopping the power generator
or the engine, for monitoring. If you turn the Power Switch to ON position, the status
Screen appears.
(1) Front panel elements
①STOP button
Press this button to initiate the stop sequence of the gen-set.
②START button
Press this button to initiate the start sequence of the engine.
③LEFT button
Use this button to move left or to change the mode. The button can change the mode
only if the main screen with the indicator of currently selected mode is displayed.
④RIGHT button
Use this button to move right or to change the mode. The button can change the mode
only if the main screen with the indicator of currently selected mode is displayed.
15
1
2
3
4
5 6
7
8
9
10
11
12
1314

11
⑤HORN RESET button
Use this button deactivate the horn output without acknowledging the alarms.
⑥FAULT RESET button
Use this button to acknowledge alarms and deactivate the horn output. Inactive alarm
will disappear immediately and status of active alarms will be changed to “confirmed”
so they will disappear as soon as their reasons dismiss.
⑦UP button
Use this button to move up or increase value.
⑧PAGE button
Use this button to switch over display pages.
⑨DOWN button
Use this button to move down or decrease value.
⑩ENTER button
Use this button to finish editing a setpoint or moving right in the history page.
⑪GCB button
No use.
⑫GENERATOR status indicator
There are two states – Gen-set OK (indicator is green) and Gen-set failure (indicator is
red). Green LED is on if the generator voltage is present and within limits. Red LED
starts flashing when gen-set failure occurs. After FAULT RESET button is pressed,
goes to steady light (if an alarm is still active) or is off (if no alarm is active).
⑬GCB on
No use.
⑭Load
No use.
⑮Operation Display
< Note>
The displayed information is structured into “pages” and “screens”. USE PAGE button to
switch over the pages.

12
3P Breaker 1P Breaker
5-2. Switches
(1) Power Switch / Air Bleeding
This is the main Power Switch of the generator.
When the Power Switch turned to OFF position, the Controller is OFF.
When the Power Switch turned to AIR BLEEDING position,
automatically starts air-bleeding device.
(2) Emergency Stop Button
This button is used to stop the engine in emergency.
By inserting the button, the engine stops.
Be sure to restore the Power Switch to OFF and re-set the button,
turning clockwise after using the emergency stop button.
(3) Main Circuit Breaker
By turning this circuit breaker on the control panel to ON,
Power will be transferred to the output receptacles and to the
load side.
The breaker trips to OFF, either overload or short-circuit.
< Note >
Do not use ELCB as the ON/OFF switch to the load.
(4) 3-Phase Circuit Breaker, 1-Phase Circuit Breaker
Each receptacle, 3-Phase and 1-Phase is incorporated
with circuit breaker respectively.
The breaker trips on overload or short-circuit on to stop
power transmission to load.
< Note >
Do not use this breaker as the ON/OFF switch to the load.
RESET
STOP

13
(5) 3-Phase Earth Leakage Circuit Breaker (3P ELCB)
1-Phase Earth Leakage Circuit Breaker (1P ELCB)
Each receptacle, 3-Phase and 1-Phase is
incorporated with ELCB respectively.
When current leak occurs, it trips to stop power
transmission to load.
< Note >
Do not use this breaker as the ON/OFF switch to the load.
(6) Battery Isolator
When turning the switch to OFF, the engine
electric circuit does not activate due to no battery
power.
5-3. Voltage Regulator
(1) Voltage Regulator
The dial adjusts generator output voltage.
By turning the dial clockwise, you can increase the voltage.
By turning the dial counter-clockwise, you can decrease the voltage.
5-4. Fuel Piping Switch (3Way Fuel Valve)
Change the three-way fuel valve to switch to supply fuel from the external tank. In that
case, the internal fuel tank is not used.
(1) If using the internal fuel tank
The three-way fuel valve is turned to the “A” side when the generator is shipped from the
factory.
CAUTION : FIRE
Always make sure that the engine is stopped when working on piping.
Always be sure to wipe up any spilled fuel.
After working on the piping, check that there is no fuel leakage.
3P ELCB
TEST
1P ELCB
TEST
OFF position ON position

14
< Note >
When disconnecting piping from the external tank, turn the lever to the “A” side, and
attach the bundled plug (R3/8”)to the external tank fuel inlet/return.
(2) If using an external fuel tank
Connect hoses from the external fuel tank to the
external fuel inlet and the external fuel return. Change
the lever of the 3way fuel valve to the “B” side to
supply fuel from the external tank.
(Refer to “9-5. Connecting with External Fuel Tank” for
corresponding procedures.)
6. Transporting/Installing
6-1. Transport Procedures
WARNING : INJURY
Do not lift up the unit using tie down. Use of such could result in the generator falling.
No persons should be under a lifted generator.
CAUTION : INJURY
Always be sure to use lifting hooks when lifting up the generator, and raise it
slowly at a completely vertical angle.
Personnel performing lifting work must wear protective gear such as helmets,
safety shoes and gloves.
Do not move the generator during operation.
(1) Lifting Procedures
Always be sure to use lifting hooks when lifting up the generator, and raise it slowly
at a completely vertical angle.
(2) Transport
When transporting this generator, tie rope to the left and right tie downs, and
securely fix the generator.
< Note >
Handle this generator with great care when raising, lowering and transporting. Rough
handling of generator can result in damage or malfunction.
Before transporting, check the inside of the spill containment and drain any accumulated
liquid.
Lifting
Hook
Tie-Down
3Way Fuel
Valve
External Fuel
Return
External Fuel
Inlet

15
6-2. Installation Procedures
WARNING : SUFFOCATION FROM EXHAUST FUME
Do not operate the generator in poorly ventilated areas such as indoors or
tunnels, as the exhaust gas of the engine contains substances that are
harmful to human health.
Do not direct exhaust fumes at pedestrians or buildings.
CAUTION : FIRE
Do not bring flammable items (such as fuel, gas and paint) or items that
are highly combustible near the generator as the muffler, exhaust gas
and other parts become extremely hot.
Keep this generator 1m or more from walls or other hindrances, and on
a level surface.
Remove the wood ties if using anchors to secure the generator.
Do not connect the generator output to indoor wiring.
If installing this generator, set up barriers or fencing completely around the boundary line
of the construction area and take measures to prevent persons not involved in the
construction from entering the area.
Always set the generator on a hard, flat and leveled surface that serves as the
foundation.
Keep the generator 1 m or more from walls or other hindrances so that the operation
panel door and left/right check doors are accessible for internal inspection/maintenance.
< Note >
This equipment must be operated on hard and flat surface. Operating under any other
conditions may result in malfunctions.
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. Load Connections
7-1. Load Cable Selection
CAUTION : PROPERTY DAMAGE
Cable burnout can occur due to generated heat if the load current exceeds
the allowable current of the cable.
The voltage drop between cables is large if the cable is excessively long or
thin, resulting in decreased input voltage to equipment using the generator,
thereby causing decreased performance, faulty operation and malfunction.
Select cable for use that has sufficient thickness and an allowable current possible for
use, giving consideration to the distance from the generator to the equipment using the
generator.

16
< Note >
Select cable with a thickness that ensures that the voltage drop across the cable will be
within 5% of the rated voltage.
Expedient Formula: the voltage drop of cables.
3-Phase 3-Wire
1-Phase 2-Wire
7-2. Connecting Load Cables
WARNING : ELECTRIC SHOCK
Before connecting or disconnecting the load cables to/from the output
terminal, always turn the output circuit breakers to the OFF position, stop
the engine, and turn the Power Switch to the OFF position.
Close the output terminal cover before operating.
Do not touch the generator if the Alternator or casing becomes wet during
operation.
CAUTION : FIRE
Do not connect the generator output to indoor wiring.
< Note >
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.
Note that the 1-phase output power decreases when 3-phase output power is used
simultaneously.
Be careful to limit the total current under the rated output current when using 1-Phase
and 3-Phase output simultaneously.
7-3. Earth Leakage Relay and Grounding
WARNING : ELECTRIC SHOCK
Ground the every grounding terminal to the earth as set in the manual.
If even one of all is unconnected by mistake or accident, it will be
much more dangerous for human than the NO-RELAY case,
because leaking current inevitably goes through the body.
Even though all the bonnets of the loads have been grounded to the earth,
the bonnet grounding terminal should be grounded to the earth.
Grounding should be made after the engine is stopped.
Whenever the Earth leakage breaker is activated, you should always repair
the leaking place first of all.
2(A)Current
(mmDia
(m)Length
58
1
(V)DropVoltage 2×××=
)
3(A)Current
(mmDia
(m)Length
58
1
(V)DropVoltage 2×××=
)

17
The generator is provided with the earth leakage breaker relay to detect any leakage
produced due to such the trouble as insulation failure of the load while the generator is
running and to cut off the circuit for protection against any accident such as electrical
shock resulting from the trouble. The specification of the earth leakage relay ;
Rated Sensitive Current: 30mA (or below) (Grounding resistance: 500Ωor below).
Sensitive time: Within 0.1 second.
(1) Grounding Work
The qualified electrician should perform the grounding
of the following 2 points(500Ωor below).
The Bonnet grounding terminal of the generator.
The Bonnet of the load.
< Note >
In the event you cannot ground the generator to the earth,
consult with the authorized distributor or our engineering
section.
(2) Operation Check
WARNING : ELECTRIC SHOCK
Before turning the circuit breaker to ON position, ensure that the breaker or
the switch of loads are positioned to OFF.
Operate the circuit breaker,
well
-
communicating with the electrician by the loa
d sid
e.
Before operating the generator, check always if the device can work.
●Actuation test of the Earth Leakage Relay and Breaker.
①Ensure that the breaker and the switches of loads are
positioned to OFF.
②Ensure that the main circuit breaker positioned to OFF.
(Refer to "4-2.Operation Panel Part Names" and
"4-3.Output Panel")
③Following the procedure in 9-1, Initial Startup /
Pre-Check,start an engine.
④Turn every breaker and ELCB to ON .
⑤Push the TEST button on 3-Phase ELCB.
Indicator changes to Green from RED and ELCB
trips to OFF, Which shows NORMAL.
⑥Push the TEST button on 1-Phase ELCB.
Indicator changes to Green from RED and ELCB
trips to OFF, Which shows NORMAL.
⑦Turn the main circuit breaker to OFF position.
In the event you cannot complete every step of the above
procedure to the end,the device is out of order. Consult
with our authorized distributor or our engineering section
and ask to repair.
Main Circuit Breaker
Battery isolator
Bonnet Grounding Terminal
TEST
3-Phase ELCB
TEST button
Indicator
TEST
1-Phase ELCB
TEST button
Indicator