Shindaiwa DGW311DM User manual

OWNER’S AND
OPERATOR’S MANUAL
ＤＧＷ３１１ＤＭ
ＤＧＷ３１１Ｌ
Water-cooled 4 Cycle Diesel Engine
CAUTION : Do not operate the Generator/Welder, or any other appliance,
before you have read and understood the instructions for use.
1. Safety Guidelines
2. Specifications
3. Use
4. Parts
5. Equipment
5-1. ECO Welding (DGW311DM only)
5-2. Monitor Lamp
5-3. Earth Leakage Breaker
5-4. Slow-Down
6. Initialization and Pre-check
6-1. Checking Engine Oil
6-2. Checking Coolant/Water
6-3. Checking Fuel
6-4. Checking Fuel, Engine Oil, and
water Leakage
6-5. Checking Battery
7. Operation
7-1. Initializing/Preparation
7-2. Stopping Generator/Welder
8. Welding Operation
8-1. Selection – Welding Cable
8-2. Polarity
8-3. Connection – Welding Cable
8-4. Duty Cycle
8-5. Welding
9. Generator Operation
9-1. Output Range
9-2. Output Limitation
9-3. Operation
10. Simultaneous Use of Welding and
Generating
11. Checking and Maintenance
12. Long-term Storage
13. Troubleshooting
14. Engine Wiring Diagram
15. Generator Wiring Diagram
Table of Contents Page
2
5
6
6
7
7
8
9
11
11
11
12
13
14
14
14
14
16
16
16
17
17
18
18
19
19
21
22
23
24
27
28
30
31
SOUND PROOF DIESEL ENGINE
GENERATOR / WELDER

1
Introduction
Thank you for purchasing Shindaiwa Sound Proof Diesel Engine Generator/Welder.
zThis 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.
zPlease operate this equipment after thoroughly reviewing and understanding the contents of this
manual.
zPlease attach this manual, if the equipment will be sub-leased.
zPlease 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 prop-
erties.
<Caution> Other types of caution
zEven some of the items noted in 『Caution 』may lead to severe injuries. Please read all
items and follow all the safety guidelines.

2
1. Safety Guidelines
Danger : Suffocation from exhaust fume
zExhaust 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 : Electric Shock
zDo not touch the output terminals during operation.
zDo not insert metal objects (such as pin or wire) into plug-in receptacles.
zDo not touch wiring or electric parts inside the equipment during operation.
zBefore connecting or disconnecting a load cable from output terminals, always turn the circuit
breaker to OFF position.
zBefore connecting or disconnecting a welding cable from output terminals, stop the engine, and
remove the engine key.
zBefore performing any equipment check or maintenance, stop the engine, and remove the engine
key. A person performing the check or maintenance should always keep the key.
Danger : Burns
zDo not open the radiator cap while operating this equipment or immediately after stopping the
equipment, to avoid sustaining burns from hot vapor.
Danger : Injuries
zClose 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
zDo not point the exhaust fume toward pedestrians or building.
Caution : Suffocation from welding fume
zBe sure to wear a fume proof mask in operation, because welding fume contains poisonous gas
and dust. Pay attention to the airflow direction and sufficient ventilation also in order to prevent
from inhaling the fume.
Caution : Injuries to eyes and skin
zBe sure to wear spark protection glass(es), long-sleeve shirts, gloves, etc. in order to protect eyes
and skin from harmful spark in welding.
zBattery 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 to your physician
immediately.

3
Caution : Electric shock
zDo not flush water onto the equipment nor operate it in the rain.
Caution : Explosion
zWhen the liquid level is below the LOWER level, never use the equipment nor recharge the battery.
zBattery may emit some combustible gas, so keep it away from fire and sparks.
Caution : Fire
zThe 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.
zAlways wipe any drip of Diesel fuel or lubrication oil. Do not use this equipment when a leak is
found. Repair the equipment before use.
zTemperature around muffler and exhaust can get extremely high. Keep any inflammable items
(such as fuel, gas, paint, etc.) away from the equipment.
zKeep any inflammable items and easily burning items away from the place in welding, because
welding splashes spatters.
zAlways operate this equipment on flat surface and, at least 1 meter away from any objects (wall,
box, etc.).
zDo not connect AC output to any indoor wiring.
zAlways wait until the equipment cools down, before placing any covering materials for storage.
Caution : Burns
zDo not touch the engine and muffler during operation and immediately after stopping the equip-
ment, for the temperature can reach extremely high.
zWhen 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 filter cap during operation, hot oil may cause some
injury.
zBe sure to wear leather gloves, apron, shoe covers, eye protection glass(es) (mask), safety shoes,
safety cap, and long sleeve shirts, because welding splashes spatters.
Caution : Injuries
zWhen lifting the equipment, always use a lift hook. Do not lift a handle, for it may cause equipment
to drop due to handle breaking off.
zAlways place the equipment on a flat and stable surface, to keep the equipment from sliding. Be
sure to lock the wheels for the wheeled models.
zWhen starting the engine, turn off the connected equipment and set the circuit breaker to OFF po-
sition.
zDo not move the equipment during operation.
zWhen performing equipment check and maintenance, always stop the engine.
zDo not operate the equipment, if the equipment is being modified or if the parts are removed.

4
Location of Warning labels
When the warning labels become unreadable or damaged, place new labels on the appropriate
locations, as specified in the following figure.
When ordering the label, use the following part numbers.
①Suffocation from exhaust fume (No. 19402-00194 )
②Suffocation from welding fume (No. 19402-00195 )
③Electric shock (No. 19402-00192 )
④Electric shock (No. 19402-00193 )
⑤Injuries (No. 19402-00199 )
⑥Burns (No. 19402-00201 )
⑦Burns (No. 19402-00200 )
⑧Fire (No. 19402-00166 )
DGW311DM
DGW311L 〔-(W)220B〕DGW311L 〔-(W)380A, -(W)400A, -(W)415A〕

5
2. Specifications
DGW311DM
DGW311LModel
-(W)220B -(W)220B -(W)380A -(W)400A -(W)415A
Generating Method Brushless, Rotating Field, Synchronous AC Generator
Rated Current (A) 280 260
RatedVoltage (V) 31.2 30.4
DutyCycle (%) 50
Rated Speed (min-1 ) 3600 3000
NoLoadVoltage (V) MAX85
Current Adj. Range (A) 30-160
Welding Rod (Ф)
ECO
2.0-4.0
Current Adj. Range (A) Single 85-310 45-310 35-280
Welding Rod (Ф) 2.6-6.0 2.0-6.0 2.0-6.0
Current Adj. Range (A) 45-160
Welding Generator Output Change
Welding Rod (Ф)
Dual
2.0-4.0
Phase 3-Phase/1-Phase
Rated Voltage (V) 220/110 380/220 400/230 415/240
Frequency (Hz) 60 50
3-Phase 10Rated Output (kVA)
1-Phase 6 8
Rated Speed (min-1 ) 3600 3000
Power Factor 3-Phase: 0.8 / 1-Phase: 1.0
AC Generator
Rating Continuous
Model Yanmar: 3TNE68-USW2
Type Vertical, Water-cooled 4-Cycle Diesel Engine
Displacement (L) 0.784
Rated Output (kW(PS)/min-1 ) 15.1(20.5)/3600 12.9(17.5)/3000
Fuel DieselFuel(ASTMNo.2-D)orEquivalent
Lubricant Oil API Class CD or Higher
Lubrication Oil Volume (L) 3.5
CoolingWaterVolume (L) 3.1
Engine
StartingMethod StarterMotor
Battery 46B24L
FuelTankCapacity (L) 37
Length (mm) 1428 (Bonnet Length 1293)
Width (mm) 700
Dimen- sion
Height (mm) 760 (870 with wheels)
Dry Weight (kg) 370 (380 with wheels)

6
3. Use
zArc Welding
zPower Source for Electric Tools and Home Appliances
zPower Source for Lighting
Caution : Damage to the equipment or other properties
zThe equipment is designed for the above purposes only. Do not use it for the other purpose. When
it will be used for the equipment with the microcomputer control or for the ultra-precision devices,
the load may be malfunctioned.
4. Parts
CURRENT ADJUSTMENT DIAL
SLOW-DOWN SWITCH
STARTER SWITCH
MONITOR LAMP
FUEL GAUGE
HOUR METER
WELDING OUTPUT TERMINAL
CIRCUIT BREAKER
3-PHASE VOLT METER
1-PHASE OUTPUT RECEPTACLE
EARTH GROUNDING TERMINAL
3-PHASE/1-PHASE OUTPUT TERMINAL
1-PHASE OUTPUT TERMINAL
BONNE GROUNDING TERMINAL
DGW311L 〔-(W)220B〕
CURRENT
ADJUSTMENT
DIAL B SLOW-DOWN SWITCH
STARTER SWITCH
MONITOR LAMP
CURRENT
ADJUSTMENT
DIALA
CIRCUIT BREAKER
3-PHASE VOLT METER
OUTPUT SELECTOR SWITCH FUEL GAUGE
HOUR METER
1-PHASE OUTPUT RECEPTACLE
WELDING OUTPUT TERMINAL B
1-PHASE OUTPUT TERMINAL
WELDING OUTPUT TERMINAL A
EARTH GROUNDING TERMINAL 3-PHASE/1-PHASE
OUTPUT TERMINAL
BONNET GROUNDING TERMINAL
DGW311DM

7
5. Equipment
5-1 ECO Welding (DGW311DM only)
The equipment is incorporated in ECO welding features that are aimed at performing the lower
noise, the lower fuel consumption and the lower gas emission than conventional models.
When you turn the selector switch to ECO, you will be able to weld with Max. 4.0mmφwelding
rod at the Slow-Down speed.
CIRCUIT BREAKER
CURRENT ADJUSTMENT DIAL
SLOW-DOWN SWITCH
STARTER SWITCH
MONITOR LAMP
3-PHASE VOLT METER
EARTH GROUNDING TERMINAL HOUR METER
FUEL GAUGE
WELDING OUTPUT TERMINAL
3-PHASE/1-PHASE OUTPUT
TERMINAL (U,V, W,O)
BONNET GROUNDING TERMINAL
DGW311L 〔-(W)380A, -(W)400A, -(W)415A〕
RADIATOR
OIL GAUGE
SIDE DOOR
AIR CLEANER
OIL PLUG,
ENGINE OIL FILLER
RESERVOIR TANK
OIL FILTER
WATER/COOLANT DRAIN PLUG
FUEL DRAIN PLUG
OIL DRAIN PLUG
FUEL LEVER/STRAINER
BATTERY
FUSE
MUFFLER
HANDLE
FUEL INLET LIFTING LUG
HANDLE
EXHAUST OUTLET
TOP PLATE
DGW311DM DGW311L

8
<Caution>
zWhen welding is performed, do not turn the output selector switch, which causes the burnout
of the switch.
zECO is designed for welding only. The circuit breaker trips when ECO is used forAC power
supply.
5-2 Monitor Lamp
The equipment is equipped with monitoring function of oil
pressure, battery charge and water/coolant Temperature.
When it is started by the starter switch from STOP to RUN
under normal condition, Oil Pressure and Battery lamps will
flash, and then the lamps will go off, immediately after the
engine starts.
When abnormality is detected either in water temperature or in oil pressure, the corresponding
monitor lamp will flash, and the automatic shutoff shall be engaged to the engine.
When the automatic shutoff is engaged, turn the starter switch to STOP position, and then restart
the engine. In the event the automatic shutoff is engaged next time, check all parts of the
corresponding alarm.
5-2.1 Oil Pressure Monitor Lamp
Danger : Injuries
zClose all doors and place locks during operating this equipment, to avoid injuries by uninten-
tionally touching cooling fan and fan belt.
Caution : Burns
zDo not touch the engine and muffler during operation and immediately after stopping the
equipment, for the temperature can reach extremely high.
zWhen checking engine oil, always stop the engine, and wait until the engine cools down. If
you open either the oil gauge or the oil filter cap during operation, hot oil may cause some
injury.
When the engine oil pressure drops during operation, the oil pressure monitor 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>
zThe engine oil pressure monitor cannot detect the degradation of engine oil itself. Please
check the engine oil periodically, and change if needed. (Refer to No. 11. Maintenance.)
5-2.2 Battery Charge Monitor Lamp
When the battery is unable to be charged during operation, the battery charge monitor lamp will
flash and the automatic shutoff will be engaged. In the event it will happen, consult with the au-
thorized distributor or our engineering section.
<Caution>
zThe battery charge monitor cannot detect the degradation of battery life nor the battery fluid
OIL PRESSURE MONITOR LAMP
BATTERY CHARGE MONITOR LAMP
COOLANT/WATER TEMPERATURE
MONITOR LAMP

9
level. Check the battery fluid level periodically. (Refer to No. 6-5 Checking Battery)
5-2.3 Coolant/Water Temperature Monitor Lamp
Danger : Injuries
zClose all doors and place locks during operating this equipment, to avoid injuries by uninten-
tionally touching cooling fan and fan belt.
Danger : Burns
zDo not open the radiator cap while operating this equipment or immediately after stopping the
equipment, to avoid sustaining burns from hot vapor.
Caution : Burns
zDo not touch the engine and muffler during operation and immediately after stopping the
equipment, for the temperature can reach extremely high.
When the water temperature rises abnormally, the coolant/water temperature monitor lamp will
flash, and the automatic shutoff will be engaged.
When this occurs, check the coolant/water reservoir tank, and replenish if needed. (Refer to No.
6-2 Checking coolant/water temperature.) If the water level is normal there may be a possibility
of overloading and always use equipment within the rated amperage.
<Caution>
zCheck the fuse next, after oil pressure, battery charge and water temperature will be found
normal when you have checked them in the first place. If the fuse is burned out, consult with
our authorized distributor or our engineering section, because there may be an abnormality
of electric/electronic parts or wiring and repairing may be required.
5-3. Earth Leakage Breaker
Danger : Electric Shock
zAll the grounding terminals must be grounded. If one of them is not grounded, human body
may get a serious electric shock by leaked current.
zEven though all the 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.
zGrounding should be made after the engine is stopped.
zWhenever the earth leakage breaker has activated, you should always repair the leaking
place first of all.
<Caution>
zThe earth leakage breaker activates only for AC power supply.
zThe circuit breaker trips to protect the loads, whenever AC power is used if the selector
switch is in the ECO position. (DGW311DM only)
The equipment is provided with the earth leakage breaker to detect any leakage arisen due to
such the troubles 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.

10
The specifications of the earth leakage breaker :
zRated Sensitive Current: 30mA (or below) (Grounding resistance: 500Ωor below)
zSensitive time: Within 0.1second
5-3.1 Grounding Work
The qualified electrician should perform the grounding work of the following 3 points (500Ωor
below).
zThe earth grounding terminal in the output terminals
zThe Outer Bonnet (Canopy) of the generator
zThe Outer Bonnet of the load
<Caution>
zIn the event you cannot ground the generator to the earth, consult with the authorized dis-
tributor or our engineering section.
5-3.2 Operation Check
Before operating the generator, check always if the device can work.
①Turn the starter switch from STOP to Run.
②Turn (Push-up) the circuit breaker (lever) to ON position.
③Push the test button. (When the button is pushed, the earth
leakage indication lamp turns ON and the circuit breaker is po-
sitioned in the middle of ON and OFF positions, the device can
work normal.)
④Push the reset button. (The earth leakage indication lamp (red)
turns OFF subsequently.)
⑤Turn (push down) the circuit breaker (lever) to OFF position.
⑥Restore the switch to STOP.
<Caution>
zIn 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 to repair.
RESET BUTTON EARTH LEAKAGE
INDICATION LAMP
TEST BUTTON
EARTH GROUNDING TERMINAL
BONNET GROUNDING
TERMINAL
GROUNDING ROD
DGW311DM
EARTH GROUNDING TERMINAL
BONNET GROUNDING
TERMINAL
GROUNDING ROD
DGW311L

11
zWhen the engine is to start, there may be a case that the engine will not start unless the
starter switch is restored to STOP once.
5-3.3 The Earth Leakage Breaker has activated
When the earth leakage breaker has activated, the earth leakage indication lamp turns ON and
the breaker (lever) trips to the middle of ON and OFF positions. In the case, stop the engine
promptly and find the leakage point to repair. After repairing leakage point(s), proceed with the
following restoration steps.
①Push the reset button or stop the engine.
②Restore (push down) the breaker (lever) to OFF position.
By the above procedures, you can reset the breaker to ON position.
<Caution>
zWhen the breaker trips to the middle but the lamp does not turn RED simultaneously, the
cause is Over-loaded or the output selector switch is positioned to ECO. Restore as per the
procedures No. 9-3 Operation.
5-4 The Slow-Down Feature
The Slow-Down feature is to set the engine speed low automatically (in about 8 seconds)for the
purpose of reducing noise and fuel consumption, whenever welding operation or electric supply
is not performed.
In the case of using the Slow-Down feature, turn the Slow-Down switch to ON. The engine
automatically moves to high speed, when welding operation or electric supply starts.
Caution : Damage to the equipment or other properties
zTurn always the Slow-Down switch to OFF, when the load is incorporated with a electro-
magnetic switch.
<Caution>
zWhen the load of less than 0.5A is connected to use, the Slow-Down feature does not func-
tion sometimes. Therefore, turn the switch to OFF.
zWhen welding operation or electric supply is used intermittently, turn the switch to OFF.
zWhen the output selector switch is positioned to ECO, the engine does not turn to high speed.
(DGW311DM only)
6. Initialization and Pre-check
Caution : Fire・Burns・Injuries
zWhen checking engine, always stop the engine, and keep away from fire. Wait until the en-
gine cools down, before performing any checks.
6-1 Checking Engine Oil
When checking for engine oil, be sure to keep the equipment
leveled, and insert the oil gauge all the way in.
Prior to starting the equipment, make sure to fill the engine oil
to the HIGH level through the oil inlet.
OIL GAUGE (YELLOW) OIL FILLER
OIL PLUG (YELLOW)
SIDE DOOR

12
<Caution>
zIf the equipment is not leveled, you cannot obtain accurate oil level.
zDo not overfill (over H line) the engine oil. The excessive volume of engine oil may damage
the engine (inside the cylinders)
■Selecting proper engine oil
Use the engine oil for Diesel engine in proper viscosity, in
compliance with the ambient temperature.
<Caution>
zUse the API class CD grade or higher.
Viscosity and Temperature
Temperature Over +20℃+10 - +20℃-10 - +40℃
Viscosity SAE30 SAE20 SAE10W/30
6-2 Checking Coolant/Water
Danger : Injuries
zClose all doors and place locks during operating this equipment, to avoid injuries by uninten-
tionally touching cooling fan and fan belt.
Danger : Burns
zDo not open the radiator cap while operating this equipment or immediately after stopping the
equipment, to avoid sustaining burns from hot vapor.
Caution : Burns
zDo not touch the engine and muffler during operation and immediately after stopping the
equipment, for the temperature can reach extremely high.
Check to see if the coolant/water level is between FULL and LOW levels in the reservoir tank. If
the coolant/water is below the LOW level, fill the tank and the radiator accordingly.
6-2.1 Filling to the Reservoir Tank
①Take out the reservoir tank to remove the cap.
②Fill up the reservoir tank to the FULL level.
③Install the cap back and tighten, and reinstall the tank to
the equipment.
6-2.2 Filling to the Radiator
①Remove the top plate.
②Remove the radiator cap.
UPPER LIMIT (H)
LOWER LIMIT (L)
REQUIRE LEVEL
SIDE DOOR
CAP
RESERVOIR TANK

13
③Fill up the radiator up to the top.
④Install the cap back and tighten.
⑤Reinstall the top plate.
<Caution>
zUse soft water, such as tap water.
zIf the ambient temperature is near freezing, use Long
Life Coolant (LLC) (30% mixture LLC is filled when
shipped from factory).
zMixture ratio of the coolant should be between 30 to
45%, depending on the outside temperature.
zUse the same LLC in identical mixture ratio to the res-
ervoir tank.
zReplace LLC at every year or 1000 hours.
Mixture Ratio (for reference only): ℃
Lowest Ambient
Temperature -15℃-20℃-30℃
Mixture Ratio 30% 35% 45%
6-3 Checking Fuel
Caution : Fire
zAlways wipe any drip of fuel. Do not use this equipment when a leak is found. Repair the
equipment before use.
Check for the fuel level in the tank.Add if necessary.
<Caution>
zUse Diesel fuel, ASTM D975 No.2-D in the event ambient
temperature reaches down to -5℃.
zThe engine is designed to use either No.1-D or No.2-D
Diesel fuel. However, for better economy, use No. 2-D Die-
sel Fuel whenever possible. At the temperature less than
-7℃(20F), No.2-D fuel may pose operating problems (see
“Cold Weather Operation” which follows). At colder tem-
peratures, use No.1-D fuel (if available) or use a “winter-
ized” No.2-D (a blend of No.1-D and No.2-D).
This blended fuel is usually called No.2-D also, but can be used in colder temperatures than
No.2-D fuel, which has not, been “winterized”. Check with the services stations operator to
be sure you can get the properly blended fuel.
zAlways use the Diesel fuel strainer.
zFill the fuel tank slightly less than the FULL tank.
TOP PLATE
RADIATOR CAP
WATER FILLER
RESERVOIR
TANK
TANK CAP
FUEL INTAKE
FUEL STRAIN NET

14
6-4 Checking Fuel, Engine Oil and Water Leakage
Caution : Fire
zAlways wipe any drip of Diesel fuel or oil. Do not use this equipment when a leak is found.
Repair the equipment before use.
Be sure to check for any fuel leak at the hose connection, and oil and coolant/water by opening
side doors. When checking for any fuel leak, open a fuel lever and be sure to close the fuel lever
after checking.
6-5 Checking Battery
Caution : Injuries to eyes and skin
zBattery fluid contains diluted sulfuric acid.Avoid contact with eyes, skin or clothing. If the acid
comes in contact, especially with eyes, flush with a lot of water, and contact your physician
immediately.
Caution : Explosion
zWhen the liquid level is below the LOWER level, never use the equipment nor recharge the
battery.
zBattery may emit some combustible gas, so keep it away from fire and sparks.
①Check the fluid level. If the level is near or lower than the
LOWER level, add distilled water until the fluid level reaches
the UPPER level.
②Make sure that the battery cables are firmly secured to the
posts. Tighten the clamps if necessary.
<Caution>
zCheck the hydrometer of the battery fluid. If it falls below 1.23, the battery requires recharg-
ing. Please consult with our authorized distributor or our engineering section.
Replacing battery
①Remove the clamp and cable from negative (-) post in
the battery. (Remove always negative side first)
②Remove the hold-down clamp from the battery.
③Remove the clamp and cable from positive (+) post in
the battery.
④Remove the battery from the seat.
※ Reinstall a new battery in the reverse order. (Install always the cable to the positive (+) post
in the new battery first.)
<Caution>
zUse the following battery.
46B24L
7. Operation
7-1 Initializing/Preparation
UPPER
LEVEL
TERMINAL
LOWER
LEVEL
+TERMINAL - TERMINAL
BATTERY
HOLD-DOWN
CLAMP
INS-CAP

15
Danger : Suffocation from exhaust fume
zExhaust 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
zDo not point the exhaust fume toward pedestrians or building.
Caution : Fire
zTemperature around muffler and exhaust can get extremely high. Keep any inflammable
items (such as fuel, gas, paint, etc.) away from the equipment.
zAlways operate this equipment on flat surface and, at least 1 meter away from any objects
(wall, box, etc.)
Caution : Injuries
zAlways place the equipment on flat and stable surface, to keep the equipment from sliding.
Be sure to lock the wheels for the wheeled models.
zWhen starting the engine, turn off the connected equipment and set the circuit breaker to
OFF position.
①Turn the circuit breaker to OFF position.
②Turn the fuel lever to OPEN.
③Turn the Slow-Down switch to ON.
④When the temperature is below 5℃,turn the starter
switch to PREHEAT. The preheating lamp flashes 15
seconds. The lamp comes off when the PREHEAT fin-
ishes.
⑤Turn the starter switch to START to start the engine by the
starter motor.
<Caution>
zDo not drive the starter motor for more than 15 seconds successively.
zIf you need to restart, wait for 30 seconds or more before retry.
⑥Release the starter switch, as soon as the engine is started.
<Caution>
zOnce the engine is started, do not turn the starter switch to START.
⑦Make sure the frequency to the monitor on the control panel.
⑧Keep the engine idle for about 5 minutes.
FUEL LEVER
CLOSE
OPEN
SLOW-DOWN SWITCH
STARTER SWITCH
PREHEAT LAMP
CIRCUIT BREAKER
DGW311DM
PREHEAT LAMP
STARTER SWITCH
SLOW-DOWN SWITCH
CIRCUIT BREAKER
DGW311L

16
Restart after stopping due to fuel shortage
This equipment is equipped with automatic air vacuuming feature. Therefore, even though the
engine stops due to running out of fuel, you can restart the engine easily by the following steps.
① Turn the starter switch to STOP.
② Fill the fuel.
③ Turn the Slow-Down switch to ON.
④ Turn the starter switch to RUN.
⑤ Turn the starter switch to START and drive the starter motor.
<Caution>
zDo not drive the starter motor for more than 15 seconds successively.
zIf you need restart, wait for 30 seconds or more before retry.
⑥ Release the starter switch, as soon as the engine started.
<Caution>
zOnce the engine is started, do not turn the starter switch to START.
⑦ Wait for about 1 minute to vacuum the air out.
(The engine speed becomes stable when the air is extracted.)
<Caution>
zKeep the Slow-Down switch ON unit the air is completely extracted out (unit the engine
speed becomes stable), otherwise the engine may disorder.
7-2 Stopping Generator/Welder
① Turn (Push down) the breaker to OFF.
② Turn the Slow-Down switch to ON.
③ Keep the engine idle (cooling down) for about 5 minutes.
④ Turn the starter switch to STOP.
⑤ After the engine stops, turn the fuel lever to CLOSE.
<Caution>
zWhen the engine does not stop in spite of turning the starter switch to STOP, turn the fuel
lever to CLOSE, then the engine will stop in a few minutes.
In this case, consult with our authorized distributor or our engineering section and ask to re-
pair.
8. Welding Operation
8-1 Selection – Welding Cable
Select the cable with proper gauge, based on the allowable amperage and distance per the table
shown below.
The welding capacity is reduced if the small gauge cable is used.
<Caution>
zWelding cables should be used unstrained.
zWhen the welding cables are used in swirl, the welding capacity is reduced.

17
Size of Cable (Unit: mm2)
Welding Cur-
rent Return Length 20m 30m 40m 60m 80m 100m
300A 30 38 50 80 100 125
250A 22 30 38 60 80 100
200A 22 30 30 50 60 80
150A 22 22 22 38 50 60
100A 22 22 22 30 30 38
8-2 Polarity
There are two kinds of welding output terminals, 『+』and 『‑』.
Select the polarity according to the operation, referring to the table below.
<Caution>
zFollow the instruction of the welding rods, the polarity of which is specified.
8-3 Connection – Welding Cable
Danger : Electric Shock
zBefore connecting or disconnecting a welding cable from welding output terminals, stop the
engine, and remove the engine key. A person performing should always keep the key.
① Stop the engine.
② Connect a welding cable to a crimping terminal and a welding
rod holder, and connect the other cable to a crimping terminal
and a material holder.
③ Connect the welding cables to the output terminals.
In terms of DGW311DM, connect cables to the welding output
terminals, referring to the table below.
ECO (Single) Single Dual
Welding Rod
φ2.0 – φ4.0 Welding Rod φ2.6 – φ6.0 Welding Rod φ2.0 – φ4.0
Welding Output Terminal A Welding Output Terminal A Welding Output Terminal A and
Welding Output Terminal B
④ Close the output terminal cover, after finishing connections, and fix the cover with bolts.
<Caution>
zBe sure to crimp a crimping terminal to a cable and connect the cable to welding output ter-
Application Connection
Normal Polarity General Welding,
such as construction Plus to the Earth (Material) Minus to holder (Rod)
Reverse Polarity Thin Plate, Build up
Welding, Stainless
Steel
Plus to holder (Rod)
Minus to the Earth (Material)
WELDING CABLE
CRIMPING
TERMINAL
WELDING ROD
HOLDER
MATERIAL HOLDER

18
minal. Otherwise, welding output terminals may burn out by the heat caused by insufficient
connections.
zDo not use a cable without a crimping terminal. If you use the cable, the insulation is peeled
off partly, to bind to an output terminal, the output terminal may burn out by the heat caused
by insufficient connections and also a bare part of the cable may touch the bonnet to short-
circuit.
8-4 Duty Cycle
Duty cycle means the welding time ratio for 10 minutes. This equipment is the rated duty cycle is
50%, namely, the welding time is 5 minutes or less. Be sure to take 5 minutes recess after 5
minutes welding.
<Caution>
zThe equipment may be damaged due to overheat, if welding more than 5 minutes succes-
sively or short time recess after the welding.
8-5 Welding
Caution : Suffocation from welding fume
zBe sure to wear a fume proof mask in operation, because welding fume contains poisonous
gas and dust. Pay attention to the airflow direction and sufficient ventilation also in order to
prevent from inhaling the fume.
Caution : Injuries to eyes and skin
zBe sure to wear spark protection glass(es)(Refer to the table below), long-sleeve shirts,
gloves, etc. in order to protect eyes and skin from harmful spark in welding.
Standard for Spark Protection Glass (Japan Industrial Standard)
Light Shielding Degree No. 7 8 9 10 11 12 13
Welding Current (A) 30-75 76-200 201-400
Caution : Fire
zKeep any inflammable items and easily burning items away from the place in welding, be-
cause welding splashes spatters.
Caution : Burns
zBe sure to wear leather gloves, apron, shoe covers, eye protection glass(es)(mask), safety
shoes, safety cap and long sleeve shirts, because welding splashes spatters.
<Caution>
zNever turn the output selector switch during welding, because it causes burnout of the switch.
(DGW311DM only)
8-5.1 DGW311DM
The equipment can be welding by 2 persons simultaneously.
Each person can adjust the welding current individually.
The current adjustable range by the current adjustable dial depends on the position each of the

19
welding output selector switch (『ECO』,『Single』and『Dual』).
Welding Current Adjustable Range
Selector Position Current Adjustable Range Welding Rod
ECO 30-160A φ2.0-4.0 Single Single Use 85-310A φ2.6-6.0
Dual Dual Use 45-160A φ2.0-4.0
After the engine is started (Refer to No. 7.1 Initializing/Preparation), operate as per the proce-
dures in the following table.
Welding Operation Procedure
ECO (Single) Single Welding Dual Welding
Procedure Operation Welding Rod
φ2.0-φ4.0 Welding Rod φ2.6-φ6.0 Welding Rod φ2.0-φ4.0
①Selector 『ECO』『SINGLE』『DUAL』
②Current
Adjustment Current Adjust. Dial A Current Adjust. Dial A Current Adjust. Dial A + B
8-5.2 DGW311L
① Start the engine. (Refer to No. 7.1 Initializing/Preparation)
② Adjust the current by the current adjustment dial.
Welding Current Adjustable Range
Current Adjustable Range
50Hz 60Hz
-(W)380A,-(W)400A,-(W)415A -(W)220B
Welding Rod
35-280A
45-310A φ2.0-φ6.0
9. Generator Operation
9-1 Output Range
9-1.1 DGW311DM-(W)220B, DGW311L-(W)220B
9-1.1.1 3-Phase 220V Output – Terminals
Maximum output from the terminals (U, V, W) is 10kVA.
CURRENT ADJUSTMENT
DIALA CURRENT ADJUSTMENT DIAL B
OUTPUT SELECTOR
SWITCH
WELDING OUTPUT
TERMINALA
WELDING OUTPUT
TERMINAL B
CURRENT ADJUSTMENT DIAL
BREAKER CURRENT ADJUSTMENT