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CAUTION

Do not operate the 
equipment before you 
have read and understood 
the instructions for use. 

OWNER’S

AND 

OPERATORS

MANUAL 

DGA20E 

DGA20E 

X750-016 32 3 

X750801-340 3 

Table of Contents 

Page

  1. Safety Guidelines 
 2. Specifications 
   2-1. Data 
   2-2. Ambient Condition 
 3. Use 
 4. Parts 

4-1. Outer and Main Components 

4-2. Operation Panel 

4-3. Output Panel 

 5. Equipment 

5-1. Monitor Lamp 

5-2. Meters 

      5-3. Fuel Line Changeover Valve 

 (3-Way Valve) 

  6. Transportation & Installation 

6-1. How to transport 

6-2. Installation 

  7. Connecting load 

7-1. Select Load Cable 

7-2. Connecting Load Cable 

7-3. ELCB and Grounding 

  8. Initialization and Pre-check 

8-1. Engine Oil 

8-2. Coolant / Water 

8-3. Fan Belt 

8-4. Fuel 

8-5. Fuel, Oil and Coolant Leakage     

8-6. Battery 

 9. Operation 

9-1. Initialization and Preparation 

9-2. During Operation 

9-3. Stopping 

9-4. Protection Feature 

9-5. Connect to External Fuel Tank 

  10. Check and Maintenance 
  11. Long Term Storage 
 12. Troubleshooting 
  13. Generator Circuit Diagram 
  14. Engine Circuit Diagram 

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SOUND-PROOF 

DIESEL ENGINE GENERATOR 

Summary of Contents for dga20e

Page 1: ... 6 1 How to transport 6 2 Installation 7 Connecting load 7 1 Select Load Cable 7 2 Connecting Load Cable 7 3 ELCB and Grounding 8 Initialization and Pre check 8 1 Engine Oil 8 2 Coolant Water 8 3 Fan Belt 8 4 Fuel 8 5 Fuel Oil and Coolant Leakage 8 6 Battery 9 Operation 9 1 Initialization and Preparation 9 2 During Operation 9 3 Stopping 9 4 Protection Feature 9 5 Connect to External Fuel Tank 10 ...

Page 2: ......

Page 3: ...lease read all item and follow all the safety guidelines 㻌 Danger Suffocation from exhaust fume Exhaust fume from the engine contains many elements harmful to human Do not operate this equipment in poorly ventilated area such as inside a room or in a tunnel Danger Electric Shock Do not insert metal objects such as pin or wire into plug in receptacles Do not touch wiring or electric parts inside th...

Page 4: ...ombustible gas so keep it away from fire and sparks Caution Fire The equipment uses Diesel Oil as a fuel When refueling always stop the engine and keep away from fire Moreover always wait until the engine cools down before refueling Always wipe any drip of Diesel fuel or lubrication oil Do not use this equipment when a leak is found Repair the equipment before use Temperature around muffler and ex...

Page 5: ...lift a handle for it may cause equipment to drop due to handle breaking off Always place the equipment on a flat and stable surface to keep the equipment from sliding When starting the engine turn off the connected equipment and set the circuit breaker to OFF position Do not move the equipment during operation When performing equipment check and maintenance always stop the engine Do not operate th...

Page 6: ...aged place new label at the appropriate location as specified in the following figure When ordering the label use the following part numbers 1 Injuries No 19402 00210 2 Caution coolant No 19402 00295 3 Safety Precaution No 19402 00306 4 Caution Electric Shock No 19402 00215 ...

Page 7: ...LE1 Cylinder bore x stroke mm 4 85 x 96 Continuous Rated Output kW PS 19 1 26 Speed min 1 1500 Displacement L 2 179 Combustion Method Swirl Chambered Cooling Method Water cooling radiator Lubricating Trochoid pump force feed lubrication Starting Starter Motor Fuel Diesel Oil SAE Class CD or higher Fuel Tank Capacity L 78 Lubricant Volume L 8 8 including filter 0 4 L Coolant Volume L 8 2 including ...

Page 8: ...umidity less than 80 Altitude Less than 300m Power Supply for submersible Pump etc Power Supply for lightings etc Power Supply for electric tools home appliances 4 1 Outer and Main Components 3 Use 4 Parts Components Engine Check Door Outer Fuel Outlet Coolant Drain Lug for Rope Oil Drain Plug Alternator Check Door Sub Tank Fuel Tank Fuel Drain Water Separator Fuel Filter Oil Gage Outer Fuel Inlet...

Page 9: ...pere Meter 13 Hour Meter 4 Frequency Meter 14 Emergency Stop Button 5 Panel Light Switch 15 Preheat Lamp 6 Panel Light 16 Starter Switch 7 Voltage Regulator 17 Battery Isolator 8 Volt Meter Selector Switch 18 Pilot Lamp 9 Ampere Meter Selector Switch 19 3 Phase Breaker 10 Monitor Lamp 20 1 Phase Breaker ...

Page 10: ...8 4 3 Output Panel Side Door 3 Phase ELCB 1 Phase ELCB 1 Phase Receptacle 15A 3 Phase Receptacle 20A Bonnet Grounding Terminal Output Terminal Cover ...

Page 11: ...his equipment or immediately after stopping the equipment to avoid sustaining burns from hot vapor Do not touch the engine and muffler during operation and immediately after stopping the equipment for the temperature can reach extremely high When the water temperature rises over 110ഒ the coolant water temperature monitor lamp will flash and the automatic shutdown of engine will be engaged When thi...

Page 12: ...en the engine oil pressure drops below 0 98 x 100kPa 1kgf cm2 during operation the oil pressure monitor lamp will flash and the automatic shutdown will be engaged When this occurs check the engine oil level and replenish to the maximum level if needed Caution The engine oil pressure monitor cannot detect the degradation of engine oil itself Please check the engine oil periodically and change if ne...

Page 13: ...ture Gauge displays the temperature of engine coolant Normal temperature may vary depending on the environment but it should be between 80ഒ and 95ഒ Caution If the temperature exceeds normal value disconnect the load idle the engine at 1000min 1 and wait until the reading falls to the normal temperature range 3 Fuel Gauge It shows the volume in the fuel tank When filled up it shows ᇹFᇺ When the han...

Page 14: ...ency of the generator Please check it showing 50Hz during operation 1 Preheat Lamp When the starter switch is turned to Run Preheat position the preheat lamp will be turned ON The preheat lamp will be turned OFF after preheating completes showing the engine start possible Caution 㻌 㻌 㻌 㻌 Preheating time varies to coolant temperature usually about 1 5 seconds 2 Pilot Lamp The lamp indicates whether...

Page 15: ...d Otherwise the battery is discharged 3 Start This position is to start the engine When the key is released the setting will automatically return to Operating Preheating position 2 Emergency Stop Button This button is used to stop the engine in emergency By inserting the button the engine stops Be sure to restore the starter switch to STOP and re set the button turning clockwise after using the em...

Page 16: ... ON OFF switch to the load 5 3 Phase Earth Leakage Circuit Breaker 3P ELCB 1 Phase Earth Leakage Circuit Breaker 1P ELCB Each receptacle 3 Phase and 1 Phase is incorporated with ELCB respectively When current leak occurs it trips to stop power transmission to load Caution Do not use this breaker as the ON OFF switch to the load 6 Volt Meter Selector Switch By changing the switch the voltmeter disp...

Page 17: ...cuit does not activate due to no battery power 1 Voltage Regulator The dial adjusts generator output voltage By turning the dial clockwise you can increases the voltage By turning the dial counter clockwise you can decrease the voltage Voltage Regulator OFF position ON position ...

Page 18: ...t the lever to A position and fix the plugs 2 Using fuel from external fuel tank Connect hoses from the external fuel tank to the external fuel intake and the external fuel return ports and set the lever for 3 way valve to B position You can now supply the fuel From the external gas tank For detailed instructions refer to ᇹ9 5 Connecting to External Fuel Tankᇺ Caution Fire Always stop the engine w...

Page 19: ... use a Lift lug when lifting the equipment for transportation 2 Transporting the equipment When transporting the equipment make sure that the equipment is secured properly with ropes tied to the roping lugs through Caution Always use extreme care when loading unloading and transporting the equipment otherwise damages and malfunction of the equipment may bring 㻌 6 Transportation and installation Li...

Page 20: ...nt etc away from the equipment Always set the equipment on hard flat surface Keep the equipment at least 1m from a wall or any obstacles to allow workable space to access the control panel and opening of the panel door Caution This equipment must be operated on hard and flat surface Operating under any other conditions may result in malfunctions Do not block the airflow from radiator vent or muffl...

Page 21: ...ll be greater voltage drop between cables which brings voltage drop to loads It may result in reduced performance in the connected loads malfunction or damages Caution It is recommended to select the proper gauge and length of cable in consideration of the maximum 5 marginal drop only for the rated voltage between the terminals of loads and generator via the cables Expedient Formula the voltage dr...

Page 22: ... not connect AC output to any indoor wiring Caution Divide loads into 3 circuits proportionally as possible when using the maximum output power especially and connect them to each phase R S T respectively Be careful to limit the current under the rated current per the phase Note that the 1 phase output power decreases when 3 phase output power is used simultaneously Be careful to limit the total c...

Page 23: ...tivated you should always repair the leaking place first of all The generator is provided with the earth leakage circuit breaker ELCB to detect any Leakage produced due to such the trouble as insulation failure of the load while the generator is running and to cut off the circuit for protection against any accident such as electrical shock resulting from the trouble The specification of ELCB Rated...

Page 24: ...Push the TEST button Yellow on 3 Phase ELCB Indicator changes to Green from RED and ELCB trips to OFF Which shows NORMAL Push the TEST button Blue on 1 Phase ELCB Red lamp turns to OFF and ELCB trips to OFF Which shows NORMAL 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 an...

Page 25: ... leakage point and restore it by the following procedure Overload happens when the breaker activates but the Earth leakage breaker does not activate Turn the 3 Phase ELCB to ON to restore Turn the 1 Phase ELCB to RESET to restore By the above procedure you can reset the ELCB to ON positions 1 ...

Page 26: ...Please refer to the user s manual for Engine separately When checking for engine oil be sure to keep The equipment leveled and insert not screw in forcibly the oil gauge all the way in Prior to starting the equipment make sure to fill the engine oil to the MAX line through the oil filler 䠘 䠘 䠘 䠘Caution䠚 䠚 䠚 䠚 Check engine oil volume IN 10 20 MINUTES LATER always after stopping engine or replenishi...

Page 27: ...ance should always keep the key Caution Burns Do not open the radiator cap while operating this equipment or immediately after stopping the equipment to avoid sustaining burns from hot vapor or water Do not touch the engine and muffler during operation and immediately after stopping the equipment for the temperature can reach extremely high levels Check the radiator and coolant reservoir tank for ...

Page 28: ...mix ratio is 30 liquid and 70 water is installed Isuzu Genuine LLC Besco LLC Super Type E Be sure to use the same LLC into sub tank The mix ration should be changed to ambient temperature but between 30 and 50 When replenishing LLC be sure to use the same brand as the LLC left in the radiator and sub tank Never use the mixed LLC by different brands Be sure to change wholly in less than 2 years or ...

Page 29: ...y and alternator pulley 2 Condition Check for any damage on the fan belt Replace if necessary Caution Refer to the User s manual for Engine for adjusting and replacing of the fan belt 8 4 Checking fuel Caution Fire Always wipe any drip of Diesel fuel or oil 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 U...

Page 30: ...ed engine oil with diesel fuel Some manufacturers of large diesel engines allow this however for your diesel engine do not use the diesel fuel which has been contaminated with engine oil Besides causing engine damage such fuel can also affect emission control Before using any diesel fuel check with the service station operator to see if the fuel has been mixed with engine oil Do not use any fuel a...

Page 31: ...r lower than the LOWER LEVEL add distilled water until the fluid level reaches the UPPER LEVEL limit Make sure that the battery cables are firmly secured to the posts Tighten the clamps more if necessary Caution Check the hydrometer of the battery fluid If it falls below 1 23 the battery requires recharging Please call our authorized distributor or our engineering section ႑ Replacing the battery R...

Page 32: ...ys operate this equipment on flat surface and at least 1 meter away from any objects wall box etc Caution Injuries Always place the equipment on a flat and stable surface to keep the equipment from sliding When starting the engine turn off the connected equipment and set the circuit breaker to OFF position Turn every circuit breakers to OFF position Turn the Battery Isolator to ON position Set the...

Page 33: ...frequency under no load 50Hz almost will be obtained at the rated output load Adjusting the voltage regulate dial set it to the required voltage 50Hz RUN 415V Turn the circuit breakers to ON to send power to the load side Danger Electric Shock Injuries Before turning the circuit breakers to ON to send power to the load side always ensure that any circuit breaker and switch of loads are positioned ...

Page 34: ...late Dial by monitoring Voltage Meter during operation ႑ Extracting the air out of the fuelling system for engine stop due to no fuel Refer to the User s manual for Engine This generator is equipped with automatic extracting feature Thus if the engine stops due to running out of fuel follow the next steps to extract the air out Add fuel to the fuel tank Turn the starter switch to RUN position It w...

Page 35: ...indicates the automatic activation No Action Abnormality ELCB Trip Breaker Trip Engine Automatic Shutdown Warning Lamp Flash Cause 1 High Water Temperature ዙ ዙ ᇲ ᇲ Activates due to high water temperature in engine Default 110ഒ 2 Low Oil Pressure ዙ ዙ ᇲ ᇲ Activate due to low oil pressure in the engine Default 0 98 100kPa 1 0kgf cm2 3 Monitor Lamp Battery Charge Insufficient ዙ ዙ ዙ ᇲ Activates in batt...

Page 36: ...out from the connected hoses By the above procedure it makes possible to use an external fuel tank Caution Use always oil proof hose in 8 10mm inner diameter as connecting hose The fuel level in the external fuel tank should be 0 to 3m higher than the bottom of the equipment Otherwise it may cause engine malfunction or stoppage To avoid any leak from the external fuel intake and return ports alway...

Page 37: ...away from fire Wait until the engine cools down before performing any checks Caution Fire Always wipe any drip of fuel or oil Do not use this equipment when a Leak is found Repair the equipment before use To optimize the use of this generator we recommend the periodical equipment checks and maintenance based on following maintenance matrix Use the hour meter as a guide for the operating time Cauti...

Page 38: ...rom fuel tank რ Clean water separator and clean gauze filter in engine feed pump რ Clean Change filter in the magnet pump for air extraction in fuel line რ Replace Clean inside fuel tank Ⴠ Leak check fuel oil and coolant რ Replacing fuel hose Ⴠ or 1 yr Clean or replace air cleaner element რ Clean რ Replace Battery fluid level check რ Battery hydrometer check რ Fan belt check რ Radiator Flush Clean...

Page 39: ...nd the type of engine oil to use and to replace refer to ᇹ8 1 Checking Engine Oilᇺ 2 Oil Filter Change Drain the engine oil fully as described in 1 Change Engine Oil Loosen and remove the Oil Filter using an oil filter wrench Smear a little engine oil on the rubber gasket of the new oil filter Screw a new filter into place and tighten it by hand until the gasket contacts the seat Then give it addi...

Page 40: ...to set the cleaner cap at the arrow mark upside Clean the element more often where the equipment is used in dusty condition Element Part No Isuzu Part No 5142150140 Clean Air Filter Element Dried contaminants adhered Blast the compressed air to element from inside Carbon and oil adhered Change to a new filter Clog Indicator The clog indicator to display clog in the air filter element is incorporat...

Page 41: ... there is no fuel leakage from the water sedimentor by turning the fuel lever to OPEN 㻌 㻌 㻌 㻌 5 Drain water in fuel filter Turn the Fuel Lever on the Water Sedimentor to CLOSE Remove the Fuel Filter by filter wrench Dispose the water in the Fuel Filter When changing the Fuel Filter smear the oil to the Gasket slightly Put the filter by hand until the Gasket touches the seal and turn the filter at ...

Page 42: ...located at the bottom of pump counter clockwise and remove filter Reinstall a replacing filter in the reverse order Caution 㻌 㻌 㻌 㻌 Put a tray under the lever in order to catch spilled fuel when changing filter Extract the air in fuel line after filter changing finishes Refer to ᇹ9 2 During Operationᇺ Ensure that there is no fuel leakage after reinstallation Filter Part No 7 Drain water in fuel ta...

Page 43: ...ide After draining finishes tighten the radiator drain lever and the drain plug on the engine side Drain the sub tank stay and drain coolant in the sub tank Reinstall the sub tank and fill coolant up to MAX level Fill coolant into radiator up as far as the water inlet level Tighten the radiator cap Close the radiator cap cover and Reinstall the radiator plate Caution Refer Coolant to ᇹ8 2 Checking...

Page 44: ...e cools down before performing any checks Caution Fire Always wipe any drip of Diesel fuel or oil Do not use this equipment when a leak is found Repair the equipment before use 1 Storage Procedures If the generator will not be used for more than two months perform the following maintenance and storage procedures Remove battery Change engine oil Drain fuel in the fuel tank and fuel filter Clean all...

Page 45: ... our authorized distributor or our engineering section to request the repair Danger Injuries If you have to stack two generators at warehouse always proceed with the following steps Ensure that there is no dent on bonnet loose bolt or no bolt in the equipment Always place the equipment horizontal on a flat and stable surface to be endurable for the total weight and to keep the equipment from slidi...

Page 46: ...bient temperature falls down below zero 1 Fuel is frozen 2 Water in fuel line is frozen 3 Pre heater is defective 1 Use winterized fuel 2 Drain water in fuel line 3 Ask our distributor to repair Engine starts but stalls immediately 1 Fuel filter is clogged 2 Gauze filter is clogged 3 Water is interfused in fuel line 4 Air is interfused in fuel line 5 Poor piping connection to external fuel tank 6 ...

Page 47: ...utor to repair 3 Ask our distributor to repair 4 Ask our distributor to repair 5 Ask our distributor to repair Pointer hand does not goes up to the rated voltage 1 Voltage meter is defective 2 AVR is defective 3 Voltage regulator dial is defective 4 Frequency is low 1 Ask our distributor to repair 2 Ask our distributor to repair 3 Ask our distributor to repair 4 Ask our distributor to repair Point...

Page 48: ...46 13 Generator Circuit Diagram ...

Page 49: ...47 14 Engine Circuit Diagram ...

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