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OWNER'S MANUAL
Air-cooled diesel engine generator set
PREFACE
The following manual is only a guide to assist you and is not a complete or
comprehensive manual of all aspects of maintaining and repairing your generator．The
equipment you have purchased is a complex piece of machinery．We recommend that
you consult with a dealer if you have doubts or concerns as to your experience or
ability to properly maintain or repair your equipment．You will save time and the
inconvenience of having to go back to the store if you choose to write or call us
concerning missing parts，service questions，operating advice，and/or assembly
questions．
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Table of Contents
Summary of Contents for Precision Power DG4LN
- Page 1 OWNER’S MANUAL Air-cooled diesel engine generator set PREFACE The following manual is only a guide to assist you and is not a complete or comprehensive manual of all aspects of maintaining and repairing your generator．The equipment you have purchased is a complex piece of machinery．We recommend that you consult with a dealer if you have doubts or concerns as to your experience or ability to properly maintain or repair your equipment．You will save time and the inconvenience of having to go back to the store if you choose to write or call us...
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Page 2: Table Of Contents
Our air-cooled diesel generators have some of the following features： ● Lightweight construction ● Air cooled ● Four-stroke diesel internal combustion engine ● Direct fuel injection system ● Recoil starter or an optional electric starter ● Large fuel tank ● Automatic voltage stabilizer ●... - Page 3 APPENDIX· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·32 Figure 1．Overall of the DG4LN...
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Page 4: Chapter 1 Technicalspecificati O Nsanddata
Figure 2．Overall view of the DG6LN CHAPTER 1 TECHNICAL SPECIFICATIONS AND DATA Technical specifications and data(in English units) Model DG4LN DG6LN DG6LN-3P Item Generator type Single phase Three phase Excitation Self-excitation voltage Voltage system Condenser compensation system Frequency(Hz) Rated power(HP）... - Page 5 37.17 55．75 55.75 Fuel tank capacity(USgal) 3.96 3.96 3.96 Dry weight(lbs) Dimensions(L×W×H) 33.3×20． 9×27． 8 36.2×20.9×27.8 36.2×20.9×27.8 (in.) Model DG4LN DG6LN DG6LN-3P Item Generator type Single phase Three phase Excitation Self-excitation voltage Voltage system Condenser compensation system Frequency(Hz) Rated power(kW）...
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Page 6: 2-L General Main Points Of Safety During Operation Of The Generator Set
Bore X Stroke(mm) 78×62 86×70 86×70 Displacement(cc) Lube-Oi capacity(L) 1.65 1.65 Fuel tank capacity(L) Dry weight(kg) Dimensions(L×W×H) 845×530×705 920×530×705 920×530×705 (mm) CHAPTER 2 OPERATING THE DIESEL GENERATOR 2-1 General main points of safety during operation of the generator set． In order to operate the generator set safely．please follow all the instructions provided in this manual carefully．Doing so otherwise may lead to accidents and or equipment damage．... - Page 7 2-1.3 Prevention from accidental burns Never touch the muffler and its cover when the diesel engine is running．Never touch the muffler and cover after the diesel engine has been used，as the muffler remains hot for a good period of time． 2-1.4 Electrics shock and short circuits Never touch the generator if the generator is wet．Also never touch the generator if your Hand is wet．Never operate your generator if the weather conditions call for any type of...
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Page 8: Preparation Before Operation
2-2 Preparation before operation 2-2.1 Fuel choices and fuel treatment Fuel tank Air filter element Use only light diesel fuel ． The fuel Do not wash the air filter．The elem- ent is made of dry material，which should be filtered clean．Never let dust does not permit washing．When the and water mix with fuel tank Use only output of the diesel engine is bad or... - Page 9 2-2.2 Fill engine oil Fabrication Oil Filling Inlet Put the generator set in level state．Fill the oil into the oil- filling inlet．At the time of checking the oil level，it is nec- essary only to lightly insert the oil ruler．Please pay attention to that you should not rotate the oil ruler．...
- Page 10 the the “on” switch is very dangerous. 2-2.3 Check air filter (1)Loosen the butterfly nut，take the cover The generator should be grounded in order of the air filter off and take the air to prevent electric shock. filter element out． Use dry compressed air (with pressure about 1.96 x 105 Pa) to blow the dust out in the electric control cabinet and at the surface...
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Page 11: Checking The Operation Of The Diesel Engine
about 20 hours． diesel engine （1）Avoid overloading the engine when 2-3.1 Low-pressure alarm system． brand new． The diesel engines have a low-pres- （2）Change the engine oil according sure sensor system where if the oil to specifications．An oil change for pressure drops to low， the sensor will brand new engine is abom-20 shut the engine off．The purpose of hours or every month ，... - Page 12 back in place．If you don’t put the rubber proper ignition．When the diesel en- eigne is operating，let the ignition plug back in place，rain，dust and other retain on the“ON”position． dirt call enter into the diesel engine．It will cause the parts inside the diesel engine to wear quickly and lead to engine failure．...
- Page 13 Note： If you crank the starter to long， the battery may be drained too much to provide enough energy for proper engine ignition．Also，when the diesel engine is operating，let the key retain in the“ON”position． Check the height of the electrolytic solution in the battery once a month．If the level of the liquid drops to low．fill it with distilled water until it reaches the high mark．If there is not enough electrolytic solution，then the diesel engine cannot be started．It is important to keep the liquid level between the high and low limits．...
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Page 14: 2-5Proper Operation Of The Generator Set
2．Check to see if the performance is 2-5 Proper operation of the good or bad． generator set 3．Check the color of the exhaust gases (whether it is too black or too 2-5.1 Operating the diesel engine white)．If any of these conditions 1．Pre-heat the diesel engine for 3 exist，... - Page 15 be 240V±5％)．This is the reading of the voltage at the ac socket． Caution：D0 not start more than two machines at the same time．The machines should be started one by one．Do not use the floodlight at the same time when using other devices． 4 ．...
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Page 16: Stopping The Generator
Finally，pull slowly on the recoil 2-7 Stopping the generator handle until you feel resistance 1．Take the electrical load off the (this is when the piston is on the generator． compression stroke ， where the 2．Turn generator air switch off. intake and exhaust valves are 3 ．... -
Page 17: Chapter 3 Maintenance
CHAPTER 3 MAINTENANCE 3-l Maintenance schedules Keeping your generator well maintained will prolong the life of your generator．Every- thing needs to be checked including the diesel engine，welder，generator，control cabinet， and frame．For overhauling procedures，please refer to the instruction manual of the Native subassembly．If you need these manuals，please call our company and we will send you one．... - Page 18 3-1.1 Changing the engine oil(every 100 2 ． The recommended time period for hours) cleaning the fuel filter is 6 Take the oil cover out．Take off the oil months or 500 hours of operation. drain plug when the diesel engine is still a．To do this，first drain the fule hot．Be careful of hot oil and hot engine from the fuel tank．...
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Page 19: Storing Along Periods Of Time
3-2 Storing for long periods of time If your generator needs to be stored for long periods of time．the following preparations should be made． 1．Start the diesel engine for 3 minutes then stop it． 2．When the engine is still hot，change the engine oil with new engine oil of the proper grade．... -
Page 20: Chapter 4 O V E R H A U L I N G A N D T R O U B L E S H O O T I N
CHAPTER 4 OVERHAULING AND TROUBLESHOOTING 4-1 Overhauling and troubleshooting procedures Causes of malfunction Remed Not enough fuel Add enough fuel The switch of fuel is not at“OPEN”position Turn the switch of fuel to“OPEN”position High-pressure pump and nozzle do not inject Disassemble the nozzle and adjust it at test fuel or the injected amount is less．... -
Page 21: Chapter 5 Part Listings
CHAPTER 5 PART LISTINGS Overall view of engine generator assembly Number Part Description Quantity Part Number AT series diesel engine 4LNl／6LNl Starter Motor 4LN2／6LN2 Flywheel generator 4LN3／6LN3 Bolt 4LN4／6LN4 Voltage Regulator 4LN5／6LN5 Battery Cable(red，black) 4LN6／6LN6 Battery 4LN8／6LN7 Oil level sensor 1LN9／6LN8 Generator 4LN9／6LN9... - Page 22 Exploded view of frame assembly Part Description Number Quantity Part Number Muffler cover plate 4LNl7／6LNl7 Muffler elbow 4LNl8／6LNl8 Left outer cover 4LNl9／6LNl9 Fuel gauge 4LN21／6LN2l Fuel tank sleeve 4LN22／6LN22 Main cover 4LN23／6LN23 Door knob 4LN24／6LN24 Right outer cover 4LN27／6LN27 Output panel assembly 4LN28／6LN28 Air cleaner cover 4LN29／6LN29...
- Page 23 Electric panel parts drawing Part Description Number Quantity Part Number Positive DC port 4LN37／6LN37 Negative DC port 4LN38／6LN38 Grounded bolt 4LN39／6LN39 Bolt 4LN40／6LN40 Large Nut 4LN41／6LN41 Bolt 4LN42／6LN42 Bolt 4LN43／6LN43 Large Nut 4LN44／6LN44 Current Adjusting Switch 4LN45／6LN45 3 prong Socket 4LN46／6LN46 Bolt 4LN47／6LN47...
- Page 24 Part Description Number Quantity Part Number Voltmeter 4LE56／6LE56 4LE57／6LE57 4 prong socket 4LE58／6LE58 Breaker bracket 4LE59／6LE59 4LE60／6LE60 Breaker 4LE61／6LE61 Wiring harness 4LE62／6LE62 Electrical box 4LE63／6LE63 Generator head assembly Part Description Number Quantity Part Number Front end cover 4LN64／6LN64 Diode 4LN65/6LN65 M4×8 Bolt 4LN66／6LN66 Fan Blade...
- Page 25 Fuel system components Part Description Number Quantity Part Number Fuel Cap 4LN79／6LN79 Seal 4LN80／6LN80 Filtering cup 4LN81／6LN8l M5×10 screw 4LN82／6LN82 Fuel lever indicator 4LN83／6LN83 M6×25 Bolt 4LN84／6LN84 Large fiat washer 6 4LN85／6LN85 Fuel tank lining 4LN86／6LN86 Shock absorbing gasket 4LN87／6LN87 Fuel tank 4LN88／6LN88 M6 Nut...
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Page 26: Remote Control Instructions
REMOTE CONTROL INSTRUCTIONS 1.Basics Be careful with the remote control and do not drop it as the remote control is a precision-fabricated device． 2). If you decide to use the remote control for starting．you cannot use the start switch on the generator，or else you may blow the fuse out． 3). -
Page 27: Limited Warranty
Precision Power Tools holds no warranty. Warranties are only available through the manufacturer. PPT will however facilitate the shipping of your product to the service depot of the manufacturer, In which case shipping to PPT as well as the shipping to manufacturer will be at the cost of the customer. - Page 30 NOTES...
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