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OWNER
S AND OPERATOR
S MANUAL
Vertical, 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 and keep near for ready use.
DGW400DM-380A/K
X750-023 89 0
X750803-710 0

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  • Page 1 S AND OPERATOR S MANUAL Vertical, 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 and keep near for ready use. DGW400DM-380A/K X750-023 89 0 X750803-710 0...
  • Page 3 Introduction We would like to thank you very much for purchasing this Soundproof Diesel Engine Generator & Welder. • This manual has been created in order to ensure safe and proper use of this equipment. Be sure to thoroughly read this manual before operating the equipment as the improper operation of this equipment can result in an accident or malfunction.
  • Page 4: Table Of Contents

    Table of Contents 1. Safety Guidelines ................2 2. Specifications................5 3. Use....................5 4. Parts ....................6 5. Equipment..................8 5-1. Eco Welding .................8 5-2. Remote Control (Option) ............8 5-3. Monitor Lamp................9 5-4. Frequency Change .............11 5-5. Earth Leakage Relay ............12 5-6. Single Phase Breaker for the receptacle circuit only..14 5-7.
  • Page 5: Safety Guidelines

    1..Safety Guidelines Warning: Suffocation from exhaust fume • Exhaust fume from the engine contains many elements harmful to human. Do not operate this equipment in poorly ventilated area, such as inside a room or in a tunnel.
  • Page 6 Caution: Electric shock • Do not flush water onto the equipment nor operate it in the rain. Caution: Explosion • Do not use the equipment or charge the battery, in the case the battery fluid level is lower than the LOWER level. •...
  • Page 7 ■Locations of Warning Labels Replace warning labels when they become difficult to see or damaged by affixing new labels in the specified locations. Order the necessary labels by numbers in parentheses. (1) Suffocation from Exhaust Fume (No. X505-007590) (2) Suffocation from Welding Fume (No. X505-007600) (3) Fire (No.
  • Page 8: Specifications

    2. Specifications Model DGW400DM Generating Method Rotating Field Rated Current 370 / 390 Rated Voltage 34.8 / 35.6 Duty Cycle Rated Speed (min 3000 / 3600 No Load Voltage MAX 85 Current Adj. Range (A) 90 – 380 / 110 - 400...
  • Page 9: Parts

    4. Parts CURRENT ADJ. DIAL - B CURRENT ADJ. DIAL - A OUTPUT SELECTOR SWITCH EMERGENCY STOP SWITCH MONITOR LAMP VOLTAGE ADJ. DIAL STARTER SWITCH SLOW DOWN SWITCH 3-P VOLT METER FUEL METER AMP. METER REMOTE CONTROL FREQ. METER RECEPTACLE WELDING TERMINAL - A ECO PLATE HOUR METER...
  • Page 10 FUEL INLET LIFTING LUG MUFFLER HANDLE EXHAUST PORT TOP PLATE HANDLE Accessories Owner’s and Operator’s Manual Engine Key 1 Set Grounding Rod Tool Door Key 2 Set - 7 -...
  • Page 11: Equipment

    5. Equipment 5-1. Eco Welding 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. 5.0mm welding rod at the slow down speed.
  • Page 12: Monitor Lamp

    5-3. Monitor Lamp The equipment is incorporated in monitoring function of WATER TEMP, BATTERY CHARGING, OIL PRESSURE, Hz/OVERHEAT. Under normal condition, when the starter switch changes from STOP to RUN, all the lamps of BATTERY CHARGING, OIL PRESSURE and Hz/OVERHEAT turn ON. When the engine starts, all the lamps turn OFF.
  • Page 13 (3) Oil Pressure Monitor Lamp Warning: Injuries • Close all doors and place locks during operating this equipment, to avoid injuries by unintentionally touching cooling fan and fan belt. Caution: Burns • Do not touch the engine and muffler during operation and immediately after stopping the equipment, for the temperature can reach extremely high.
  • Page 14: Frequency Change

    5-4. Frequency Change Warning: Injuries • Frequency change should be done, after stopping the engine. Moreover, close doors and place locks during operating this equipment, to avoid injuries by unintentionally touching cooling fan and fan belt. Warning: Electric Shock • Never touch the frequency change bus bar during operation. Caution: Burns •...
  • Page 15: Earth Leakage Relay

    5-5. Earth Leakage Relay Warning: Electric Shock • Ground every 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.
  • Page 16 (2) Operation Check Before operating the equipment, check always if the device can work duly as shown in the following procedure. Turn the starter switch from STOP to RUN. Turn (Push-up) the 3-P circuit breaker (lever) to ON position. Push the test button. The device is found to be normal as the earth leakage indication lamp turns ON and the 3-P circuit breaker positions in the middle of ON and OFF.
  • Page 17: Single Phase Breaker For The Receptacle Circuit Only

    5-6. Single Phase Breaker for the receptacle circuit only Caution: Electric Shock/Injuries • Be sure to disconnect all the loads to the generator when turning the breakers ON again, after the 1-Phase Breaker has activated. Disconnect all the loads. Turn the breaker to ON. <Note>...
  • Page 18: Initialization And Pre-Check

    6. Initialization and Pre-check Caution: Fire/Burns/Injuries • When checking engine, always stop the engine, and keep away from fire. Wait until the engine 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.
  • Page 19: Checking Fuel

    (1) Filling to the Reservoir Tank Remove the sub tank cap. Fill up the sub tank to the FULL level. Install the cap back. (2) Filling to the Radiator Remove the top plate. Remove the radiator cap. Fill the radiator up to the top. Install the cap back and tighten.
  • Page 20: Checking Fuel, Engine Oil And Water Leakage

    • Always use the fuel strainer. • Fill the fuel tank slightly less than the FULL tank. TANK CAP FUEL INLET FUEL STRAINER 6-4. Checking Fuel, Engine Oil and Water Leakage Warning: Fire • Do not use this equipment when a leak is found. Repair the equipment before use.
  • Page 21: Operation

    ■Replacing battery Remove the clamp and cable from negative (-) post in the battery. (Remove always negative side first) Remove the hold-down clamp from the battery. Remove the clamp and cable from positive (+) post in the battery. Remove the battery from the seat. * Reinstall a new battery in the reverse order.
  • Page 22: Stopping

    <Note> • Do not drive the starter motor for more than 15 seconds successively. • If you need to restart, wait for 30 seconds or more before retry. • Once the engine has started, never turn the starter switch to START. STARTER SWITCH 1-P BREAKER 3-P BREAKER...
  • Page 23: Welding Operation

    Push the emergency stop switch to stop engine in an emergency case. <Note> • Be sure to return the engine starter switch to "STOP" after the engine stops. • Never hit the emergency stop switch by any tool such as a hammer. •...
  • Page 24: Polarity

    8-2. Polarity There are two welding output terminals, "+" and "-". Select the polarity according to the operation, referring to the table below. <Note> • Follow the instruction of the welding rods, the polarity of which is specified. Polarity Application Connection "+"...
  • Page 25: Duty Cycle

    8-4. Duty Cycle Duty cycle means the weldable time ratio for 10 minutes. This equipment is the rated duty cycle is 60%, namely, the weldable time is 6 minutes or less. Be sure to take 4 minutes recess after 6 minutes welding. <Note>...
  • Page 26: Generator Operation

    2 persons can weld simultaneously. Each person can adjust the welding current individually. The current adjustable range by the current adjust dial, depends on the position each of the welding output selector switch. CURRENT ADJ. DIAL - B CURRENT ADJ. DIAL - A OUTPUT TERMINAL - B OUTPUT TERMINAL - A OUTPUT SELECTOR SWITCH...
  • Page 27: Output Limitation

    (2) 1-Phase 220-240V Output Receptacles 1-Phase 220-240V Output is available through 2 receptacle sets. Maximum output is 3kVA for 2 receptacle sets. 1-P RECEPTACLE 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 character of the components.
  • Page 28: Operation

    9-3. Operation Warning: Electric Shock • Before connecting or disconnecting a load cable from the receptacles, always turn the circuit breakers (3-P and 1-P) to "OFF" position. And always stop engine, and remove the engine key. A person performing the maintenance should always keep the key.
  • Page 29: Simultaneous Use Of Welding And Generating

    ■The Circuit Breaker has activated due to overload Caution: Injuries • Be sure to turn the power switch "OFF" in the load when turning the circuit breaker to "ON" again, 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 down the circuit.
  • Page 30: Checking And Maintenance

    11. Checking and Maintenance Warning: Electric Shock/Injuries • Before performing any equipment check or maintenance, stop the engine, and remove engine key. A person performing the maintenance should always keep the key. Caution: Fire/Burns • Keep the equipment far away from fire. •...
  • Page 31 Checking Time Startup Every Every Checking Items 50th Every 100 Every 200 Every 400 Check 1,000 2,000 hour hours hours hours hours hours  13 Change Air Element 2nd time 1st time 14 Adjust Tension V-Belt and after 15 Change V-Belt 2 years 16 Clean Radiator Fin 17 Clean Radiator (inside)
  • Page 32 (2) Oil Filter Change 1st time 50th hour 2nd time Every 200 hours and after 1) Drain the engine oil completely, as described in "11-1 Oil Change". 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.
  • Page 33 (4) Clean/Change Fuel Strainer 1st time: 50th hour / Cleaning 2nd time and after: Every 100 hours Replacement Every 400 hours 1) Turn the fuel lever to "CLOSE". 2) Unscrew the retainer ring counterclockwise, and remove the cup and the filter element. 3) Discard any dust or water inside the cup, and clean the filter element by blowing compressed air, or replace if...
  • Page 34: Long-Term Storage

    12. Long-Term Storage Warning: Electric Shock/Injuries • 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: Burn • When checking engine, always stop the engine, and keep far away from fire. •...
  • Page 35 Symptom Possible Causes Remedy Starter motor does 1. Weak Battery. 1. Recharge Battery. not start 2. Dead Battery. 2. Replace Battery. 1. Fuel lever to CLOSE. 1. Fuel lever to OPEN. 2. Insufficient Fuel. 2. Replenish fuel. Engine does not start 3.
  • Page 36: Engine Wiring Diagram

    14. Engine Wiring Diagram - 33 -...
  • Page 37: Generator Wiring Diagram

    15. Generator Wiring Diagram - 34 -...
  • Page 40 ©2013...

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