Shindaiwa ISO 9001 User Manual





OWNER’SAND
OPERATOR’SMANUAL

SOUND PROOF DIESEL ENGINE
GENERATOR/WELDER

ＤＧＷ３１１ＤＭ
ＤＧＷ３１１Ｌ

Water-cooled 4 Cycle Diesel Engine

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

CAUTION:DonotoperatetheGenerator/Welder,oranyotherappliance,

beforeyouhave read andunde rstoodthe instructions for



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

use.

Introduction

Thank you for purchasing Shindaiwa Sound Proof Diesel Engine Generator/Welder.
z 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.

z Please operate this equipment after thoroughly reviewing and understanding the contents of this

manual.

z Please attach this manual, if the equipment will be sub-leased.
z 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 prop-

erties.

<Caution> Other types of caution

z Even some of the items noted in 『 Caution 』 may lead to severe injuries. Please read al l

items and follow all the safety guidelines.

1

1. Safety Guidelines

Danger : Suffocation from exhaust fume

z 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 : Electric Shock

z Do not touch the output terminals during operation.
z Do not insert metal objects (such as pin or wire) into plug-in receptacles.
z Do not touch wiring or electric parts inside the equipment during operation.
z Before connecting or disconnecting a load cable from output terminals, always turn the circuit

breaker to OFF position.

z Before connecting or disconnecting a welding cable from output terminals, stop the engine, and

remove the engine key.

z Before performing any e quipment 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

z Do not open the radiator cap while operating this equipment or immediately after stopping the

equipment, to avoid sustaining burns from hot vapor.

Danger : Injuries

z 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

z Do not point the exhaust fume toward pedestrians or building.

Caution : Suffocation from welding fume

z Be 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

z Be sure to wear spark protection glass(es), long-sleeve shirts, gloves, etc. in order to protect eyes

and skin from harmful spark in welding.

z 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 to your physician
immediately.

2

Caution : Electric shock

z Do not flush water onto the equipment nor operate it in the rain.

Caution : Explosion

z When the liquid level is below the LOWER level, never use the equipment nor recharge the battery.
z Battery may emit some combustible gas, so keep it away from fire and sparks.

Caution : Fire

z The 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.

z 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.

z Temperature around muffler and exhaust can get extremely high. Keep any inflammable items

(such as fuel, gas, paint, etc.) away from the equipment.

z Keep any inflammable items and easily burning items away from the place in welding, because

welding splashes spatters.

z Always operate this equipment on flat surface and, at least 1 meter away from any objects (wall,

box, etc.).

z Do not connect AC output to any indoor wiring.
z Always wait until the equipment cools down, before placing any covering materials for storage.

Caution : Burns

z Do not touch the engine and muffler during operation and immediately after stopping the equip-

ment, for the temperature can reach extremely high.

z 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 filter cap during operation, hot oil may cause some
injury.

z Be 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

z When 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.

z Always 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.

z When starting the engine, turn off the connected equipment and set the circuit breaker to OFF po-

sition.

z Do not move the equipment during operation.
z When performing equipment check and maintenance, always stop the engine.
z Do not operate the equipment, if the equipment is being modified or if the parts are removed.

3

 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.

① Suffocation from exhaust fume (No. 19402-00194 )
② Suffocation from welding fume (No. 19402-00195 )
③ Electric shock (No. 19402-00192 )
④ Electric shock (No. 19402-00193 )
⑤ Injuries (No. 19402-00199 )
⑥ Burns (No. 19402-00201 )
⑦ Burns (No. 19402-00200 )
⑧ Fire (No. 19402-00166 )

DGW311DM

DGW311L 〔-(W)220B〕 DGW311L 〔-(W)380A, -(W)400A, -(W)415A〕

4

2. Specifications

DGW311DM DGW311L Model
 -(W)220B -(W)220B -(W)380A -(W)400A -(W)415A

Generating Method Brushless, Rotating Field, Synchronous AC Generator

Rated Current (A) 280 260
Rated Voltage (V) 31.2 30.4
Duty Cycle (%)  50
Rated Speed (min

No Load Voltage (V) MAX 85

-1

) 3600 3000

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 )

Current Adj. Range (A) 45-160

Welding Generator Output Change

Welding Rod (Ф )

2.6-6.0 2.0-6.0 2.0-6.0
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 10 Rated Output (kVA)

AC Generator

Rated Speed (min

1-Phase 6 8

-1

) 3600 3000
Power Factor 3-Phase: 0.8 / 1-Phase: 1.0
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 Diesel Fuel(ASTM No.2-D) or Equivalent

Engine

Lubricant Oil API Class CD or Higher
Lubrication Oil Volume (L) 3.5
Cooling Water Volume (L) 3.1
Starting Method Starter Motor

Battery 46B24L
Fuel Tank Capacity (L) 37

Length (mm) 1428 (Bonnet Length 1293)
Width (mm) 700
Height (mm) 760 (870 with wheels)

Dimen-

sion

Dry Weight (kg) 370 (380 with wheels)

5

3. Use

z Arc Welding
z Power Source for Electric Tools and Home Appliances
z Power Source for Lighting

Caution : Damage to the equipment or other properties

z The 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

DGW311DM

CIRCUIT BREAKER

CURRENT
ADJUSTMENT
DIAL A

1-PHASE OUTPUT RECEPT ACLE

WELDING OUTPUT TERMINAL A

3-PHASE VOLT METER

OUTPUT SELECTOR SWITCH FUEL GAUGE

EARTH GROUNDING TERMINAL

BONNET GROUNDING TERMINAL

3-PHASE/1-PHASE
OUTPUT TERMIN AL

CURRENT
ADJUSTMENT
DIAL B

SLOW-DOWN SWITCH

STARTER SWITCH

MONITOR LAMP

HOUR METER
WELDING OUTPUT TERMINAL B
1-PHASE OUTPUT TERMINAL

DGW311L 〔-(W)220B〕

CIRCUIT BREAKER

3-PHASE VOLT METER

1-PHASE OUTPUT RECEPT ACLE

CURRENT ADJUSTMENT DIAL

SLOW-DOWN SWITCH

STARTER SWITCH

MONITOR LAMP

FUEL GAUGE

EARTH GROUNDING TERMINAL

HOUR METER

3-PHASE/1-PHASE OUTPUT TERMINAL

WELDING OUTPUT TERMINAL

1-PHASE OUTPUT TERMINAL

BONNE GROUNDING TERMINAL

6

DGW311L 〔-(W)380A, -(W)400A, -(W)415A〕

CIRCUIT BREAKER

CURRENT ADJUSTMENT DIAL

SLOW-DOWN SWITCH

3-PHASE VOLT METER

EARTH GROUNDING TERMINAL HOUR METER

STARTER SWITCH

MONITOR LAMP

FUEL GAUGE

3-PHASE/1-PHASE OUTPUT
TERMINAL (U,V, W,O)

BONNET GROUNDING TERMINAL

WELDING OUTPUT TERMINAL

DGW311DM DGW311L

FUSE

FUEL LEVER/STRAINER

BATTERY

SIDE DOOR

AIR CLEANER
RADIATOR

OIL PLUG,
ENGINE OIL FILLER

OIL GAUGE
RESERVOIR TAN K

OIL FILTER

OIL DRAIN PLUG

FUEL INLET

HANDLE

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.

FUEL DRAIN PLUG

LIFTING LUG

MUFFLER

HANDLE

EXHAUST OUTLET

TOP PLATE

7

<Caution>

z When welding is performed, do not turn the output selector switch, which causes the burnout

z ECO is designed for welding only. The circuit breaker trips when ECO is used for AC power

5-2 Monitor Lamp

The equipment is equipped with monitoring function of oil
pressure, battery charge and water/coolant Temperature.

of the switch.

supply.

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

z Close all doors and place locks during operating this equipment, to avoid injuries by uninten-

tionally touching cooling fan and fan belt.

Caution : Burns

z Do not touch the engine and muffler during operation and immediately after stopping the

equipment, for the temperature can reach extremely high.

OIL PRESSURE MONITOR LAMP

BATTERY CHARGE MONITOR LAMP
COOLANT/W ATER TEMPERATURE

MONITOR LAMP

z When 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>
z 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 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 au­thorized distributor or our engineering section.
<Caution>
z The battery charge monitor cannot detect the degradation of battery life nor the battery fluid

8

level. Check the battery fluid level periodically. (Refer to No. 6-5 Checking Battery)

5-2.3 Coolant/Water Temperature Monitor Lamp

Danger : Injuries

z Close all doors and place locks during operating this equipment, to avoid injuries by uninten-

tionally touching cooling fan and fan belt.

Danger : Burns

z Do not open the radiator cap while operating this equipment or immediately after stopping the

equipment, to avoid sustaining burns from hot vapor.

Caution : Burns

z Do 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>
z Check 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

z All the grounding terminals must be grounded. If one of them is not grounded, human body

may get a serious electric shock by leaked current.
z Even 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.

z Grounding should be made after the engine is stopped.
z Whenever the earth leakage breaker has activated, you should always repair the leaking

place first of all.
<Caution>

z The earth leakage breaker activates only for AC power supply.
z The 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.

9

The specifications of the earth leakage breaker :

z Rated Sensitive Current: 30mA (or below) (Grounding resistance: 500Ω or below)
z Sensitive time: Within 0.1second

5-3.1 Grounding Work

The qualified electrician should perform the grounding work of the following 3 points (500Ω or
below).

z The earth grounding terminal in the output terminals
z The Outer Bonnet (Canopy) of the generator
z The Outer Bonnet of the load

<Caution>
z In the event you cannot ground the generator to the earth, consult with the authorized dis-

tributor or our engineering section.

DGW311DM

DGW311L

BONNET GROUNDING
TERMINAL

5-3.2 Operation Check

Before operating the generator, check always if the device can work.

① Turn the starter switch from STOP to Run.
② Turn (Push-up) the circuit breaker (lever) to ON position.
③ Push 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.)

EARTH GROUNDING TERMINAL

GROUNDING ROD

BONNET GROUNDING
TERMINAL

EARTH GROUNDING TERMINAL

GROUNDING ROD

RESET BUTTON

TEST BUTTON

EARTH LEAKAGE
INDICATION LAMP

④ Push the reset button. (The earth leakage indication lamp (red)

turns OFF subsequently.)

⑤ Turn (push down) the circuit breaker (lever) to OFF position.
⑥ Restore the switch to STOP.

<Caution>
z 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 to repair.

10

z When 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.

① Push the reset button or stop the engine.
② Restore (push down) the breaker (lever) to OFF position.

By the above procedures, you can reset the breaker to ON position.
<Caution>
z When 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

z Turn always the Slow-Down switch to OFF, when the load is incorporated with a electro-

magnetic switch.
<Caution>
z When 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.

z When welding operation or electric supply is used intermittently, turn the switch to OFF.
z When 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

z When 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.

11

OIL GAUGE (YELLOW)

SIDE DOOR

OIL PLUG (YELLOW)

OIL FILLER

<Caution>

z If the equipment is not leveled, you cannot obtain accurate oil level.
z Do 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.

UPPER LIMIT (H)

REQUIRE LEVEL

LOWER LIMIT (L)

<Caution>
z Use 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

z Close all doors and place locks during operating this equipment, to avoid injuries by uninten-

tionally touching cooling fan and fan belt.

Danger : Burns

z Do not open the radiator cap while operating this equipment or immediately after stopping the

equipment, to avoid sustaining burns from hot vapor.

Caution : Burns

z Do 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

① Take out the reservoir tank to remove the cap.
② Fill up the reservoir tank to the FULL level.
③ Install the cap back and tighten, and reinstall the tank to

the equipment.

6-2.2 Filling to the Radiator

① Remove the top plate.
② Remove the radiator cap.

SIDE DOOR

CAP

RESERVOIR TAN K

12

③ Fill up the radiator up to the top.
④ Install the cap back and tighten.
⑤ Reinstall the top plate.

<Caution>

TOP PLATE

z Use soft water, such as tap water.
z If the ambient temperature is near freezing, use Long

z Mixture ratio of the coolant should be between 30 to

z Use the same LLC in identical mixture ratio to the res-

z Replace LLC at every year or 1000 hours.

Mixture Ratio (for reference only): ℃

Lowest Ambient
Temperature

Mixture Ratio 30% 35% 45%

6-3 Checking Fuel

Life Coolant (LLC) (30% mixture LLC is filled when

shipped from factory).

45%, depending on the outside temperature.

ervoir tank.

-15℃ -20℃ -30℃

RADIATOR CAP

WATER FILLER

RESERVOIR
TANK

Caution : Fire

z Always 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>

z Use Diesel fuel, ASTM D975 No.2-D in the event ambient

temperature reaches down to -5℃.

TANK CAP

z The 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-

FUEL STRAIN NET

FUEL INTAKE

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.

z Always use the Diesel fuel strainer.
z Fill the fuel tank slightly less than the FULL tank.

13

6-4 Checking Fuel, Engine Oil and Water Leakage

Caution : Fire

z Always 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

z Battery 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

z When the liquid level is below the LOWER level, never use the equipment nor recharge the

battery.
z Battery may emit some combustible gas, so keep it away from fire and sparks.
① Check 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.
② Make sure that the battery cables are firmly secured to the

posts. Tighten the clamps if necessary.
<Caution>
z Check 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

① Remove the clamp and cable from negative (-) post in

the battery. (Remove always negative side first)

② Remove the hold-down clamp from the battery.
③ Remove the clamp and cable from positive (+) post in

the battery.

④ Remove the battery from the seat.
※ Reinstall a new battery in the reverse order. (Install always the cable to the positive (+) post

TERMINAL

LOWER
LEVEL

INS-CAP

+ TERMINAL

HOLD-DOWN
CLAMP

UPPER
LEVEL

- TERMINAL

BATTERY

in the new battery first.)
<Caution>
z Use the following battery.

46B24L

7. Operation

7-1 Initializing/Preparation

14

Danger : Suffocation from exhaust fume

z 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

z Do not point the exhaust fume toward pedestrians or building.

Caution : Fire

z Temperature around muffler and exhaust can get extremely high. Keep any inflammable

items (such as fuel, gas, paint, etc.) away from the equipment.
z Always operate this equipment on flat surface and, at least 1 meter away from any objects

(wall, box, etc.)

Caution : Injuries

z Always place the equipment on flat and stable surface, to keep the equipment from sliding.

Be sure to lock the wheels for the wheeled models.
z When starting the engine, turn off the connected equipment and set the circuit breaker to

OFF position.

① Turn the circuit breaker to OFF position.
② Turn the fuel lever to OPEN.
③ Turn the Slow-Down switch to ON.
④ When 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.
⑤ Turn the starter switch to START to start the engine by the

starter motor.

<Caution>

z Do not drive the starter motor for more than 15 seconds successively.
z If you need to restart, wait for 30 seconds or more before retry.

⑥ Release the starter switch, as soon as the engine is started.
<Caution>
z Once the engine is started, do not turn the starter switch to START.

⑦ Make sure the frequency to the monitor on the control panel.
⑧ Keep the engine idle for about 5 minutes.

CIRCUIT BREAKER

DGW311DM

SLOW-DOWN SWITCH

STARTER SWITCH

PREHEAT LAMP

DGW311L

CIRCUIT BREAKER

SLOW-DOWN SWITCH

FUEL LEVER

CLOSE

OPEN

STARTER SWITCH

PREHEAT LAMP

15

 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>

z Do not drive the starter motor for more than 15 seconds successively.
z If you need restart, wait for 30 seconds or more before retry.

⑥ Release the starter switch, as soon as the engine started.
<Caution>
z Once 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>
z Keep 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>
z When 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>

z Welding cables should be used unstrained.
z When the welding cables are used in swirl, the welding capacity is reduced.

16

Size of Cable (Unit: mm

Welding Cur-

Return Length 20m 30m 40m 60m 80m 100m

2

)

rent
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>
z Follow the instruction of the welding rods, the polarity of which is specified.

Application Connection

Normal Polarity General Welding,

Reverse Polarity Thin Plate, Build up

8-3 Connection – Welding Cable

Danger : Electric Shock

z Before 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 cabl es to the output terminals.

In terms of DGW311DM, connect cables to the welding output
terminals, referring to the table below.

ECO (Single) Single Dual

such as construction

Welding, Stainless
Steel

Plus to the Earth (Material)
Minus to holder (Rod)

Plus to holder (Rod)
Minus to the Earth (Material)

WELDING CABLE

WELDING ROD
HOLDER

MATERIAL HOLDER

CRIMPING
TERMINAL

Welding Rod
φ2.0 – φ4.0

Welding Output Terminal A Welding Output Terminal A Welding Output Terminal A and

Welding Rod
φ2.6 – φ6.0

Welding Rod
φ2.0 – φ4.0

Welding Output Terminal B

④ Close the output terminal cover, after finishing connections, and fix the cover with bolts.
<Caution>
z Be sure to crimp a crimping terminal to a cable and connect the cable to welding output ter-

17

z Do not use a cable without a crimping terminal. If you use the cable, the insulation is peeled

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>
z The equipment may be damaged due to overheat, if welding more than 5 minutes succes-

8-5 Welding

Caution : Suffocation from welding fume

minal. Otherwise, welding output terminals may burn out by the heat caused by insufficient
connections.

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-

sively or short time recess after the welding.

z Be 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

z Be 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.

Light Shielding Degree No.

Welding Current (A) 30-75 76-200 201-400

Caution : Fire

z Keep any inflammable items and easily burning items away from the place in welding, be-

cause welding splashes spatters.

Caution : Burns

z Be 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.

Standard for Spark Protection Glass (Japan Industrial Standard)

7 8 9 10 11 12 13

<Caution>
z Never turn the output selector switch during welding, because it causes burnout of the switch.

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

(DGW311DM only)

18

welding output selector switch (『ECO』,『Single』and『Dual』).

Welding Current Adjustable Range

Selector Position Current Adjustable Range Welding Rod

Single

ECO 30-160A

Single Use 85-310A

Dual Dual Use 45-160A

After the engine is started (Refer to No. 7.1 Initializing/Preparation), operate as per the proce­dures in the following table.

CURRENT ADJUSTMENT
DIAL A

WELDING OUTPUT
TERMINAL A

OUTPUT SELECTOR
SWITCH

Welding Operation Procedure

Procedure Operation

ECO (Single) Single Welding Dual Welding
Welding Rod

φ2.0-φ4.0

CURRENT ADJUSTMENT
DIAL B

WELDING OUTPUT
TERMINAL B

Welding Rod

φ2.6-φ6.0

φ2.0-4.0
φ2.6-6.0
φ2.0-4.0

Welding Rod

φ2.0-φ4.0

①
②

Selector
Current

Adjustment

『ECO』 『SINGLE』 『DUAL』

Current Adjust.
Dial A

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

35-280A

45-310A

9. Generator Operation
9-1 Output Range

9-1.1 DGW311DM-(W)220B, DGW311L-(W)220B

Welding Rod

φ2.0-φ6.0

Current Adjust.
Dial A

CURRENT ADJUSTMENT DIAL

BREAKER CURRENT ADJUSTMENT

Current Adjust.
Dial A + B

9-1.1.1 3-Phase 220V Output – Terminals

Maximum output from the terminals (U, V, W) is 10kVA.



19

9-1.1.2 1-Phase 220V Output – Terminals (using the terminals only)

1-Phase 220V Output is available, using the 3-phase output terminals. Maximum output available
for the one set of the terminals is 6kVA but the total output for the 3 sets is 8kVA, which please
note.

9-1.1.3 1-Phase 110V Output – Receptacles & Terminals

1-Phase 110V Output is available through 2 receptacle sets and one terminal set.
Maximum output per one receptacle is 1.5kVA and one terminal set is 3kVA. The total output for
the receptacles and the terminal set is 6kVA.

9-1.2 DGW311L-(W)380A, DGW311L-(W)400A, DGW311L-(W)415A
9-1.2.1 3-Phase Output – Terminals

Maximum output from the terminals (U, V, W) is 10kVA.

Output
voltage

9-1.2.2 1-Phase Output – Terminals

1-Phase Output is available, using the 3-Phase output terminals. Maximum output available for
the one set of the terminals is 6kVA but the total output for the 3 sets is 8kVA, which please note.

DGW311L

-(W)380A -(W)400A -(W)415A

380V 400V 415V

Output
voltage

DGW311L

-(W)380A -(W)400A -(W)415A

380V 400V 415V

20

9-1.2.3 1-Phase Output – Terminals

1-Phase Output is available, using the 3-Phase output terminals and the other terminal (O).
Maximum output available for the one set of terminals is 3kVA but the total output for 3 sets is
8kVA, which please note.

<Caution>
z When using 1-Phase output, connect the loads evenly to each terminal set as much as pos-

sible.

9-2 Output Limitation

Please refer to the following table, because electric tools and home appliances cannot be judged
only by the rated output or the power consumption due to the efficiency and characteristic of the
components.

DGW311DM-(W)220B, DGW311L-(W)220B :

Output
voltage

DGW311L

-(W)380A -(W)400A -(W)415A

220V 230V 240V

Applicable Load (For reference purpose only) (60Hz)

Loads

1-Phase 110V

Receptacle

1 unit

Terminal
1 set

Capacity (kW)

Receptacle
& Terminal
Total

1-Phase 220V

Terminal
1 set

Terminal
3 sets
Total

3-Phase
220V

Terminal

Electric Bulb, Heater, etc. 1.5 3.0 6.0 6.0 8.0 -

Electric Tools (Series Motor),

0.7 1.5 3.0 3.0 4.0 -

etc.
Mercury Bulb (High Power

0.6 1.2 2.4 2.4 3.2 -

Factor Type)
Submersible Pump, Com-

0.6 1.2 2.4 2.4 3.2 4.0
pressor, etc. (Induction Mo­tor)

21

DGW311L-(W)380A, DGW311L-(W)400A, DGW311L-(W)415A :
Applicable Load (For reference purpose only) (50Hz)

Loads

1-Phase
(O & U, V, W)

Terminal
1 set

Electric Bulb, Heater, etc. 3.0

Terminal
3 sets
Total

6.0 6.0 8.0 -

Capacity (kW)

1-Phase
(U, V, W)

Terminal
1 set

Terminal
3 sets
Total

3-Phase
(U, V, W)

Terminal

Electric Tools (Series Motor),
etc.

Mercury Bulb (High Power
Factor Type)

Submersible Pump, Com­pressor, etc. (Induction Mo-

1.5

1.2

1.2

3.0 3.0 4.0 -

2.4 2.4 3.2 -

2.4 2.4 3.2 4.0

tor)

※ Series Motor: Motor with brush
※ Induction Motor: Brushless Motor
※ The value described is 『OUTPUT』 for Induction Motor loads and 『POWER CON-

SUMPTION』 for the other equipment.
<Caution>
z Be sure to use the frequency designated in the equipment incorporated in mercury lamp or

induction motor.
z The load incorporated in motor may require bigger power than the rated power consumption.

Therefore, consult with our authorized distributor or our engineering section to clarify.
z When connecting 2 or more sets to use, start the load one by one, not to start them simulta-

9-3 Operation

Danger : Electric Shock

neously.

z When switching a Mercury bulb ON again, wait for 15 minutes (about) until it cools down.
z A Mercury bulb may flicker sometimes.

z Before connecting or disconnecting a load cable from output terminals, always turn a circuit

breaker to 『OFF』 position.
z All the grounding terminals must be grounded. If one of them is not grounded, human body

may get a serious electric shock by leaked current. (Refer to『5-3 Earth Leakage Breaker』)

z Grounding should be made after the engine is stopped.
z Whenever the earth leakage breaker activates, you should repair the leaking place first of all.

Caution : Injuries

z Be sure to connect to output terminals or insert a plug to a receptacle, after confirming that all

the switches in the loads are positioned to 『OFF』.

22

Caution : Damage to the equipment or other properties

z In the event using the equipment to computers, microcomputers incorporated loads and pre-

cision equipment, there is a possibility for them to be mal-functioned or broken down.
<Caution>

z Be sure to use the power cord with crimping terminal to connect to output terminals.
z Volt meter reads the 3-Phase figures, even if the circuit breaker is positioned to『OFF』, when

the engine is driving.
After the engine starts (Refer to 『7-1 Initializing/Preparation』), operate the equipment as per the
following procedures.

① Turn off the power switch in the load, and then turn the circuit breaker to 『OFF』.
② Connect the load to the output terminals or receptacles.
③ Close the output terminal cover, after finishing connections and fix the cover with bolts.
④ Turn the circuit breaker to 『ON』.
⑤ When finishing the load operation, always turn the circuit breaker to『OFF』.



 The Circuit Breaker

Caution : Injuries

z Be sure to turn off the power switch in the load when turning the circuit breaker to 『ON』,

when the circuit breaker has activated.
When the electric supply exceeds the rated output (overload), the circuit breaker activates to trip
off in order to shut off the circuit. When the load in operation stops, check the breaker. When th e
circuit breaker is positioned intermediary『ON』and『OFF』, check if the earth leakage indication
lamp turns ON or not. In the case the lamp turning ON, refer to 『5-3 Earth Leakage Breaker』. In
the case the lamp NOT turning ON, follow the next procedures to restore the circuit breaker.

① Turn off all the power switches in the loads.
② Turn (Push) down the circuit breaker to『OFF』once and then turn (push) up the circuit

breaker to『ON』.
<Caution>

z Take care for overload, referring to 『9-2 Output Limitation』.
z When the output selector switch is positioned to ECO and AC power is used, the circuit

breaker trips off to shut down the circuit. Stop using AC power and follow the above proce-

dures to restore the circuit breaker. (DGW311DM only)

10. Simultaneous Use of Welding and Generating

The circuit breaker reacts on the AC power supply circuit only. In the simultaneous use of welding
and generating, there sometimes happens overload to the engine.
Refer to the following table and limit the AC power use.

DGW311DM-(W)220B, DGW311L-(W)220B :

Limitation of AC Power Supply in the simultaneous use of welding and generating (60Hz)

23

Welding Output AC Power Output
Welding Rod/Current 3-Pase Power use only 1-Phase Power Use only

φ2.0mm/50A or below
φ2.6mm/80A
φ3.2mm/120A

φ4.0mm (φ2.0mmx2)/170A
φ5.0mm (φ2.6mmx2)/220A
φ6.0mm (φ3.2mmx2)/280A

※ ( ) indicates 2-Persons Dual Use. (DGW311DM only)
<Caution>

z The simultaneous use of ECO welding and AC power is not available. (DGW311DM only)

DGW311L-(W)380A, DGW311L-(W)400A, DGW311L-(W)415A :

Limitation of AC Power Supply in the simultaneous use of welding and generating (50Hz)

Welding Output AC Power Output
Welding Rod/Current 3-Pase Power use only 1-Phase Power Use only

φ2.0mm/50A or below
φ2.6mm/80A
φ3.2mm/120A

φ4.0mm/170A
φ5.0mm/220A
φ6.0mm/260A

9.5kVA or below 7.6kVA or below

8.6kVA or below 6.8kVA or below

7.2kVA or below 5.7kVA or below

5.2kVA or below 4.1kVA or below

3.0kVA or below 2.4kVA or below

0kVA or below 0kVA or below

8.5kVA or below 6.8kVA or below

7.6kVA or below 6.0kVA or below

6.2kVA or below 4.9kVA or below

4.2kVA or below 3.3kVA or below

2.0kVA or below 1.6kVA or below

0kVA or below 0kVA or below

11. Checking and Maintenance

Danger : Electric Shock・Injuries

z Before performing any equipment check or maintenance, stop the engine, and remove en-

gine key. A person performing the maintenance should always keep the key.

Caution : Fire・Burns

z When checking the engine, always stop the engine, and keep away from fire. Wait until the

engine cools down, before performing any checks.
To optimize the use of this equipment, we recommend the periodical equipment checks and
maintenance based on the following matrix.
<Caution>
z The authorized technicians should perform all checking and maintenance work, except for

the pre-startup checks.
z Request for the maintenance item with ●mark to the authorized distributor or our engi-

neering section.
z This table only covers the simple checks and maintenance for the engine. For more detailed

guide, please refer to the User’s Manual for the engine.
z Always use our genuine replacement parts.

24

Use the hour meter as a guide for the operating time.

Checking Items Startup

Check

At
50hrs

1 Check and Supply Fuel

○

Checking Time

Every
200hrs

Every
400hrs

Every
1000 hrs

Every
2000 hrs

2 Check and Supply Engine Oil

○

3 Engine Oil Change
4 Oil Filter Change
5 Check/Add Water/Coolant

○

6 Water/Coolant Change
7 Clean/Change Fuel Filter

st

○

1

st

○

1

2nd or

after

2nd or

after

○
○

or

○

one year

○

(Clean)

○

(change)

8 Drain Water from Fuel Tank
9

Check Leakage Fuel・Oil・Water ○

10 Check/Add Water Battery

○

11 Clean/Change Air Cleaner Element
12 Adjust Tension V-Belt
13 Clean Radiator Fin

14

Change Hose Fuel・Radiator

○

st

●

1

(Clean)

2nd or

●

after

○

(change)

●

Change Vibration-Absorbing Rubber

15 Adjust Engine Valve Clearance
16 Check/Adjust Injection Nozzle

●

(Adjust)●(Adjust)

●

●

or 2

years

17 Check/Adjust Injection Pump

11.1 Oil Change
First Time 50 hour mark

2nd or after Every 200 hours

① Remove the oil plug.
② Loosen the oil drain plug and allow the oil to drain fully.
③ Reinstall the oil drain plug.
④ Checking the oil level by the oil level gauge, add oil

into the oil filler to fill up to the max level. (3.5 liter Max)

OIL DRAIN PLUG

⑤ Reinstall the oil plug hand tight.
<Caution>
z Refer to 『6-1 Checking Engine Oil』to select engine oil.

11.2 Oil Filter Change
First Time 50 hour mark

2nd or after Every 200 hours

●

SIDE
DOOR

OIL
FILLER

OIL PLUG (YELLOW)

① Drain the engine oil fully, as describe in 『11-1 Oil Change』.

25

② Loosen and remove the oil filter, using an oil filter

wrench.

③ Smear a little engine oil on the rubber gasket of a new

filter.

④ Screw the new filter into place and tighten it by hand

OIL GAUGE (YELLOW)

until the gasket contact the seat. Then, give it additional

『1.1/4 Turn』to seat the filter, using an filter wrench.

⑤ Supply oil and install the filler cap.

<Caution>
z If an oil filter wrench is not available, contact our au-

thorized distributor or our engineering section.

z Oil Filter Part No.: 119305-35151 (Yanmar)

11.3 Cleaning/Changing Air Filter Element
Clean Every 200 hours

Replace Every 400 hours

① Unfasten clips in the cleaner cap and remove th e air

cleaner cap.

② Unscrew the wing bolt and remove the air filter ele-

ment.

③ Clean or re place the air filter element, and reinstall it

OIL FILTER

GASKET

AIR CLEANER

SIDE DOOR

in reverse order.

<Caution>

z Clean more frequently, if used in dusty environment.
z Air Filter Element Part No. 121465-12510 (Yanmar)

 How to clean air filter element

<If the element has dried contaminants>
It may be cleaned by blowing compressed air from the inside.
<If the element has carbon or oil>
It should be replaced to a new one.

11.4 Cleaning/Changing Fuel Filter

Clean Every 200 hours
Replace Every 400 hours

① Turn the fuel line valve lever to 『CLOSE』.
② Unscrew the retaining ring by turning counterclockwise, and

remove the cup and fuel filter element.

ELEMENT

WING BOLT

CLEANER

CLOSE

CLIP

OPEN

FUEL LEVER

RETAINING
RING

CUP

③ Discard any dust or water inside the cup, and clean the filter element by blo wing compressed

air. (or replace, if necessary) (When you replace the filter element, be sure to replace a o-ring

26

as well)
④ Reassemble it back.
<Caution>

z Be sure to check for any contaminants on the packing, whenever reinstalling the cup.
z Turn the fuel line valve lever 『OPEN』after assembling, and check for any leak. Confirming

no leak, turn the fuel line valve 『CLOSE』.
z Fuel Element Part No.: 124550-55700 (Yanmar)

11.5 Draining Water from Fuel Tank
Drain Water Every 200 hours

① Unscrew the fuel drain plug.
② Reinstall the drain plug, after draining the water entirdy.

11.6 Changing Coolant/Water
Replace Every 1 year or 1000 hours

① Remove the top plate.
② Remove the radiator cap.
③ Loosen the water drain pl ug.
④ After draining all the water, reinstall the water drain plug.
⑤ Remove the reservoir tank and replace all the water.
⑥ Install the reservoir tank back, and fill the radiator with

coolant/water up to radiator filler neck. (Total cool­ant/water Capacity is 3.1 liter.)

⑦ Reinstall the radiator cap.
⑧ Install the top plate back.

TOP PLATE

FUEL DRAIN

RADIATOR CAP

RESERVOIR TAN K

WATER DRAIN
PLUG

WATER FILLER

SIDE DOOR

CAP

12. Long - Term Storage
Danger : Electric Shock

z 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.

Caution: Injuries

z 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.

Caution : Fire・Burns

z When checking engine, always stop the engine, and keep away from fire.
z Temperature around muffler and exhaust can get extremely high. Wait until the engine cools

down, before performing any checks.

27

If the generator/welder will not be used for more than two months, perform the following
maintenance and storage procedures.

① Remove battery.
② Chan ge engine oil.
③ Drain fuel from fuel tank and fuel filter.
④ Clean all parts, cover the generator/welder, and keep it in the storage, away from dust and

humidity.
<Caution>
z Recharge the removed battery once a month.

13. Troubleshooting
Danger : Electric Shock

z Do not operate the equipment, if the equipment or you are wet.
z Before performing any equipment check or maintenance, stop the engine.

Caution : Injuries

z When performing equipment check and maintenance, always stop the engine.

Caution : Fire・Burns

z When checking engine, always stop the engine, and keep away from fire.
z Temperature around engine, muffler and exhaust can get extremely high. Wait until the en-

gine cools down, before performing any checks.
Follow the guideline below, when performing any troubleshooting. If you cannot resolve the
problems by this troubleshooting guide, contact the authorized distributor or our engineering sec­tion to request the repair.

Symptoms Possible Cause Corrective Actions
Starter motor does not start 1. Weak Battery

2. Dead Battery

Engine does not start 1. Fuel lever to CLOSE

2. Insufficient Fuel

3. Water or contaminants in fuel

Engine starts, but stalls imme­diately

Welding Arc is weak

1. Insufficient oil

2. Insufficient coolant/water

1. Output selector switch is to 『ECO』
or 『DUAL』

2. Wrong current adjustment dial set­ting

3. Poor contacts of cables

4. Improper Cable Diameter

5. Insufficient connection to material

6. Dual Use

7. Engine output is down

1. Recharge Battery

2. Replace Battery

1. Fuel lever to OPEN

2. Replenish fuel

3. Drain water or clean fuel tank,
fuel filter, and water sediments

1. Replenish oil

2. Replenish coolant/water

1. Turn to 『SINGLE』 or 『RATED
SPEED』

2. Turn the dial clockwise

3. Connect securely

4. Change cables according to
『 Selection – Welding Cable』

5. Connect securely

6. Stop using AC Power

7. Keep 50% duty cycle

Excessive Welding Arc

1. Output selector switch is to
『SINGLE』or 『RATED OUTPUT』

2. Wrong current adjustment dial po­sition

28

1. Turn to 『ECO』 or 『DUAL』

2. Turn the dial counterclockwise

No AC output

1. Circuit breaker is to 『OFF』

2. Output selector switch is to『ECO』

1. Turn to 『ON』

2. Turn to 『SINGLE』 or 『DUAL』

AC Output is Weak

Slow-Down does not activate

1. The power consumption of the load
exceeds the rated output

2. Dual Use

1. Short circuit of welding cable

2. The power consumption of the load
is 0.5A or below

Engine does not stop 1. Stop Solenoid disorder

Black and white smoke exhaust
from muffler successively

1. Overloaded use

1. Adjust according to 『OUTPUT
LIMITATION』

2. Stop welding

1. Repair the short circuit

2. Turn the Slow-Down switch to
『OFF』

1.Turn the fuel lever to 『CLOSE』
to stop and repair

1. Keep the duty cycle

2. Adjust according to 『OUTPUT
LIMITATION』

29

14. Engine Wiring Diagram

DGW311DM DGW311L

30

15. Generator Wiring Diagram

(220V 60Hz)

31

(

)

(220V 60Hz)

220B
W

DGW311L -

32

(

)

A

(380V 50Hz)

380
W

DGW311L -

33

(

)

A

(400V 50Hz)

400
W

DGW311L -

34

(

)

A

(415V 50Hz)

415
W

DGW311L -

35

  

Head Office : ６−２−１１，Ｏｚｕｋａ−Ｎｉｓｈｉ，

 Ａｓａｍｉｎａｍｉ−Ｋｕ，Ｈｉｒｏｓｈｉｍａ，
 ７３１−３１６７，Ｊａｐａｎ

Telephone : [phone] FAX : [phone]

71902‑94012