Contact person:
Yang Jian
Company address: Building B. 4/F Tellhow Plaza, High-Tech Rd., Nanchang, Jiangxi, China
Post Code: 330096
Tel: 86-791-8101461
Fax:86-791-8116137
E_Mail:thie@tellhow.com

Generator > > FAQS

FAST QUESTION OF GENERATOR PROBLEM

Click on the problem you meet with diesel engine ,alternator and electrical control,find the causes and remedies for the problem.

Diesel Engine

1.Faults on Fuel Valve	2.Low compressive pressure
3.Too High Air Press Inside Crank Box	4.Wear of Piston, Piston Ring, Bearing, and Axle Journal, including, Cylinder Packing
5.Engine Decoupling	6.Engine Vibrates
7.Engine Running Unstably	8.Too Large Lub. Oil Consumption Rate
9.The engine knocking cylinder	10.The consumption of fuel excels the normal level
11.The Temperature of Coolant Below the Normal	12.Too High Pressure of Lubricant Oil
13.Too low lub. Oil pressure	14.Insufficient Output Power of Engine
15.The engine unable to stop	16.The engine cannot reach the rated rotary speed
17.Emitting blue smoke or white smoke	18.Emitting black smoke
19.The engine can start but cannot keep running	20.May turn the engine but cannot start, without smoke from the exhaust pipe
21.The engine has the start difficulty or cannot start, gives off black smoke	22.The engine cannot be turned or only be turned slowly

Alternator

1.Too low voltage of the genset under a load	2.Too low voltage at free running of the genset
3.Too High of Output Voltage	4.Unstable Output of Voltage of the Genset
5.During running of the genset, no voltage outputs

ElectricaI Control

1.Remote Emergency Stop Cannot Be Realized	2.Remote Monitor Cannot Be Realized
3.The genset unable to stop automatically in the auto mode	4.Unable to stop manually
5.The genset unable to undertake load	6.Low Voltage Alarming
7.High Voltage Alarming	8.Stop Of Over Speed Fault
9.Low Oil Pressure Faults Alarming/Stop	10.High Water Temperature Faults Alarming/Stop
11.In case of the start motor running, the genset unable to couple	12.In case of the signal"START" correctly input, but manual /auto unable to start
13.In case of key turned to"START", the genset unable to star

1 Faults on Fuel Valve

Check Methods

A. Voltage of fuel valve.
B. Suction iron clicks?
C. Overflow valve.

A. In case of the key switch at the working position, the connection point of magnetic valve shall has voltage under the working conditions, the purple wire shall have voltage, the coil consumes power of 24W, in case of 24V, current of approx. 1A, the black wire is of negative.
B. Movable diesel engine. Tell the assistant to turn the key switch to the working position, then turn to O position, the valve will give off click, if necessary, check the action of iron, dot press the start button and the stop button in turns, the valve will give off click.(Repeat if necessary).
C. Check if the overflow valve can be sealed negatively, if not, replace the overflow valve

2 Low compressive pressure

Causes

Remedies

A. Block of air filter or the air inlet system.
B. Improper gap of air door.
C. Mistaken timing of distribution.
D. Air leakage of cylinder liner.
E. Air door open and close inflexibly.
F. Wear of cylinder packing.
G. Air leakage between air door and air door base.
H. Friction, wear, or break of piston ring.
I. Wear of air door rod and/or air door conduit.
J. Break of air door spring.

A. Replace air filter /clean the air inlet system.
B. Check/adjust gap of air door.
C. Adjust as per the stipulated data.
D. Refer to the manual for measuring surface degree or replace cylinder liner.
E. Clean, replace, or regrind air door.
F. Shown on wear of piston, piston ring, bearing, and axle journal.
G. Replace/regrind air door and air door base.
H. Replace piston ring.
I. Replace air door and air door conduit.
J. Replace air door spring.

3 Too High Air Press Inside Crank Box

Causes	Remedies
A. Block of vent pipe. B. Wear of cylinder packing. C. Friction, wear or break of piston ring. D. Wear of air door rod and/or air door conduit. E. Damage of piston.	A. Check if the vent pipe is blocked. B. Shown on"wear of piston, piston ring, bearing, and axle journal". C. Shown on"wear of piston, piston ring, bearing, and axle journal ". D. Replace air door bar and/or air door conduit. E. Shown on"wear of piston, piston ring, bearing, and axle journal".

4 Wear of Piston, Piston Ring, Bearing, and Axle Journal, including, Cylinder Packing

Causes	Remedies
A. Air leakages between the air filter and the turbocharger. B. Too high sulfuric contents in fuel.	A. Replace parts if necessary, ensure there is no leakage. B. Check specification of fuel/ contact with the fuel supplier.

5 Engine Decoupling

Causes	Remedies
A. Pull -- rod of throttle. B. Air in the oil inlet passage. C. Friction of high speed movement of the speed adjustor.	A. Check if the gap of connect pints of the pull -- rod is too large, adjust for correct gap, replace component if necessary. B. Check if there is leakage, replace the damaged parts. C. Repair the speed adjustor, replace if necessary.

6 Engine Vibrates

Causes	Remedies
A. Faults on oil injector or improper type. B. Friction of control system of rotary speed. C. Too high temp. of engine. D. Damage of cooling fan. E. Assemble faults of engine. F. Faults on oil inject pump. G. Low compressive pressure. H. Adopt wrong HP pipes or installed mistakenly. l. lmprover alignment of bell housing and flywheel.	A. Check, adjust or repair oil injector or select correct type. B. Check, clean. C. Check, add coolant, inspect fan, thermostat, check water leakage. D. Repair fan. E. Contact with the authorized repairman. F. Ask agent to check the oil inject pump. G. Shown on "low compressive pressure". H. Replace or correct. I. Contact with agent.

7 Engine Running Unstably

Causes

Remedies

A. Block of fuel pipe.
B. Fault on oil transfer pump.
C. Dirty filter for fuel oil.
D. Improper adjust/assembly of spring of speed adjustor.
E. Fault of oil injector or wrong type.
F. Block of ventilation of fuel tank.
G. Air in the fuel system.
H. Block of air filter or wrong type.
I. Friction of rotary speed control system of engine.
J. Too high temp. of engine.
K. Improper gap of air door.
L. Excess lub. Oil or improper brand of oil.
M. Faults on cold start system.
N. Block of the exhaust pipe.
O. Faults on oil injecting pump.
P. Low compressive pressure.
Q. Friction of air door.
R. HP oil pipe selected or installed mistakenly.
S. Break of spring of air door.

A. Check/replace fuel pipe.
B. Check/repair oil transfer pump, replace if necessary.
C. Replace filter for fuel oil.
D. Adjust /replace spring of speed adjustor.
E. Check/adjust or replace oil injector.
F. Clean/install pipes of ventilation.
G. Remove air in the fuel system.
H. Replace air filter/ensure correct type.
I. Check, clean.
J. Shown on"temp. of coolant above the normal".
K. Check/adjust gap of air door.
L. Check and adjust oil volume or replace with correct kind and type.
M. Install cold start supplement set. Check, repair cold start set, replace if necessary.
N. Check and remove block, ensure correct size of the exhaust pipe.
O. Contact with local agent.
P. Shown on "low compressive pressure".
Q. Clean rod of air door and hole of conduit.
R. Correct or replace.
S. Replace spring of air door.

8 Too Larg e Lub. Oil Consumption Rate

Causes	Remedies
A. Wear of bearing and sealing ring of turbocharger. B. Break or wear of piston ring. C. Wear or damage of cylinder packing and piston. D. Improper brand of lub. Oil.	A. Repair/replace turbocharger, check lub. Oil. B. Replace cycle shown on"wear of piston, piston ring, bearing, axle journal". C. Shown on"wear of piston, piston ring, bearing, axle journal". D. Replace lub. Oil/ filter, ensure adoption of proper lub. Oil.

9 The engine knocking cylinder

Causes

Remedies

A. Faults on oil Transfer pump.
B. Fault on oil injector or improper type.
C. Faults on the cold start system.
D. Apply mistaken type or brand of fuel.
E. Improper adjust of control rod of throttle.
F. Too high temp. engine.
G. Improper gap of air door.
H. Excess lub. Oil or mistaken spec. of lub. Oil.
I. Air leakage of oil suction pipe.
J. Improper timing of oil supply.
K. Friction of air door.
L. Low compressive pressure.
M. Wear or damage of crank bearing.
N. Break of spring of air door.

A. Check/ repair transfer pump, replace if necessary.
B. Check/adjust or replace oil injector.
C. Install the cold start set, check, repair, replace if necessary.
D. Apply super diesel with low sulfur content, max. of 0.05%.
E. Check stroke of throttle.
F. Shown on“temp. of engine excels the normal”.
G. Adjust/check gap of air door.
H. Refer the manual for correct volume and spec.
I. Check leakage, replace the faulted parts.
J. Check the set data and adjust oil injector.
K. Clean/replace or regrind air door.
L. Shown on"low compressive pressure".
M. Replace crank bearing, check replace cycle.
N. Replace spring of air door.

10 The consumption of fuel excels the normal level

Causes

Remedies

A. Block of the air filter, or wrong type.
B. Block of the oil injector, or wrong type.
C. Too low temperature of engine.
D. Improper gap of the air door.
E. Faults or improper setup Of the pressure adjustor.
F. Improper timing of oil supply.
G. Improper adjustment of the oil control rod.
H. Thin air owing to too high ambient temp. or altitude.
I. Overload of engine.
J. Fuel leakages inside or outside.
K. Friction Of ventilation of the fuel box.
L. Friction of the exhaust pipe.
M. Faults on the cold start system.
N. Friction of air door.
O. Low compressive pressure.

A. Find out causes/ replace if necessary.
B. Check/adjust or replace the injector.
C. Shown on "temp.of coolant below normal temp".
D. Adjust/check gap of the air door.
E. Repair/readjust.
F. Check the data of the injector and adjust.
G. Check full stroke of throttle.
H. Modify as the sales manual of engine.
I. Check max. load, decrease if necessary.
J. Removal of leakages.
K. Clean /add vent pipe.
L. Inspect friction of the exhaust pipe and proper size.
M. Install the cold start set, check, repair, and replace if necessary.
N. Clean/replace or regrind air door.
O. Shown on "Low compressive pressure".

11 The Temperature of Coolant Below the Normal

Causes

Remedies

A. Too low level of coolant.
B. Block or damage of the heat radiator.
C. Dent or block of flexible pipe of the heat radiator.
D. Loose driving belt of fan.
E. Improper level of lub. Oil.
F. Damage or lose of cover of cooling fan.
G. Problems concerning pressure cover of the radiator or mistaken type.
H. Problems concerning the temperature meter.
I. Shuttering of the radiator was not fully open.
J. Block or mistaken type of air filter.
K. Faults of oil injector or mistaken type.
L. Block of the exhaust pipe.
M. Damage of fan.
N. Block of water or air passage of the radiator.
O. Insufficient coolant in the system.
P. Accumulated air in the cooling system.
Q. Faults with the water pump.
R. Faults / mistake type of thermostat.
S. Air in the cooling system.
T. Faults on the oil injecting pump.
U. Mistaken timing of oil supply.
V. Improver valve timing.
W. Leakage of cylinder liner.
X. Damage of piston.

A. Add coolant.
B. Clean as per the Manual, repair if necessary.
C. Inspect flexible pipe, replace if necessary.
D. Inspect the tightening degree of the belt, tighten.
E. Add or drain off lub. Oil, check mark of oil scale.
F. Check the cover of the fan, repair, replace, or reinstall.
G. Check the pressure cover, replace if necessary.
H. Check/repair the temperature meter, replace if necessary.
I. Check/repair shuttering, replace if necessary.
J. Check or replace the air filter.
K. Check/adjust or replace the oil injector.
L. Check block of the exhaust pipe, inspect sizes.
M. Replace fan.
N. Check and clean.
O. Add coolant.
P. Remove the air in the cooling system.
Q. Check/repair, or replace the water pump.
R. Check/replace thermostat.
S. Check leakages of flexible suction pipe, leakage of cylinder cover.
T. Ask agent to inspect the oil injecting pump.
U. Consult data of fuel injecting pump, adjust.
V. Adjusted as per the stipulated data.
W. Check cylinder liner.
X. Replace cylinder packing and piston. Find out the causes of damage.

12 Too High Pressure of Lubricant Oil

Causes	Remedies
The pressure reducing valve unable to open.	Replace the pressure reducing valve.

13 Too low lub. Oil pressure

Causes

Remedies

A. Improper level of lub. Oil.
B. Problems on the pressure meter of lub. Oil
C. Lub. Oil diluted by fuel.
D. Mistaken brand of lub. Oil.
E. Lub. Oil temp. excels the normal (120

).
F. Dirt of the filter for lub. Oil.
G. Wear or damage of crank bearing.
H. Wear of lub. Oil pump.
I. Open of pressure reducing valve.
J. Damage of the pressure reducing valve.
K. Faults on the suction pipe of lub. Oil pump.
L. Block of suction filter of oil sump.

A. Check leakage of lub. Oil, add or drain off.
B. Check engine oil scale.
C. Check lub.oil pressure meter.
D. Replace lub.oil . If diluted once again,contact with the authorized office.
E. Replace lub.oil temp, check brand.
F. Check, clean, or replace lub.oil cooler.
G. Replace lub.oil filter.
H. Inspect/replace crank bearing.
I . Inspect, repair/replace lub.oil pump.
J . Replace the pressure reducing valve.
K . Replace the pressure reducing valve.
L . Inspect, repair/replace suction pipe suction pipe,clean filter.

14 Insufficient Output Power of Engine

Causes

Remedies

A. Too large load considering of rated power.
B. High altitude causes insufficient power.
C. Block of fuel pipe.
D. Too high lub. Oil level.
E. Obstacle to move of control rod of thrott1e thrott1e.
G. Block of air inlet and outlet system.
D. Air in fuel -- bubbles in the oil passage.
H. Block of oil return pipe or unsmooth ventilation of oil tank.
I. Improper gap of air door.
J. Applied wrong type or brand of fuel.
K. Too high temp. of air inlet (over 40

).
L. Too low temp. of air inlet (below 0

).
M. Too high temp. of fuel (over 70

).
N. Fault on the fuel injector or wrong type of injector.
O. Faults on the supply pump.
P. Dirt of the fuel filter.
Q. Too high friction of speed adjustor, fault or wrong setup.
R. Fault or wrong setup of pressure adjustor.
S. Too low setup of max. speed limit of the speed adjustor.
T. Fault on the fue1 injecting pump.
U. Mistaken timing of oil supply.
V. Low compressed pressure.
W. Damage or dirty of wheel of turbocharger.
X. Abnormal working of air door (if installed).

A. Lower loads.
B. Adjust the engine in case of the altitude of over l000 meters.
C. Check block of fuel lines.
D. Check oil scale and volume of oil sump.
E. Check position of the control rod if full open of throttle.
F. Check bock of air inlet and outlet system.
G. Remove air in fuel, tighten pipe joints and filter.
H. Check vertical pipe of oil tank.
I. Check bock, torsion, or dent of oil return pipe.
J. Check and adjust gap of air door.
K. Apply a temporary oil tank to start engine for identification.
L. Introduce air to supercharger when high air temp.
M. Introduce air under casing to engine when low tem.
N. Fill oil tank, stop of fuel heater, max. temp of 70℃.
O. Check/ speed adjust, or replace the oil injector.
P. Check, repair the oil transfer pump, replace if necessary.
Q. Replace the fuel filter.
R. Contact with the authorized personnel.
S. Contact with the authorized personnel.
T. Check/adjust the speed adjustor.
U. Ask agent to check oil injecting pump.
V. Consult data of fuel injecting pump, adjust, shown on "Low compressive pressure".
W. Clean, repair or replace turbocharger.
X. Find out causes, clean, repair, or replace air door.

15 The engine unable to stop

Causes	Remedies
A. Loose of a semi -- auto safety pipe at connection box. B. Improper contact / break of circuit. C. Faults on stop button. D. Faults on the stop electromagnet. E. Fault on the fuel closing valve. F. Block of the oil return pipe.	A. Press the button of the safety pipe for reset of the pipe. B. Get rid of improper contact / break of circuit; check oxidation of joints, clean if necessary. C. Replace the stop button. D. Check / replace the stop electromagnet. E. Shown on "Possible Fault on fuel closing valve". F. Check block, torsion, or dent of oil return pipe.

16 The engine cannot reach the rated rotary speed

Causes	Remedies
A. Too large load considering of rated power. B. Problems concerning the tachometer. C. Improper adjust of the control rod of throttle. D. Block of oil suction pipe. E. Fault of speed adjustor or improper setup. F. Too low max. speed limit of the speed adjustor. G. Water in fuel.	A. Decrease load or adopt low grades. B. Check with a manual tachometer or the digital tachometer. C. Check the stroke of throttle. D. Check block of oil suction pipe, replace if necessary. E. Check /adjust the speed adjustor. F. Check /adjust the speed adjustor. G. Replace fuel, install oil and water separator.

17 Emitting blue smoke or white smoke

Causes

Remedies

A. Applied wrong type of lub. Oil.
B. Faults on the cooling start system.
C. Too low temperature of engine.
D. Excess lub. Oil of engine.
E. Wear of sealing ring &bearing of turbocharger.
F. Applied wrong type or brand of fuel.
G. Close to overhaul limit of engine.
H. Water leakage of cylinder end.

A. Replace lub. Oil and filter/ ensure application of correct type of lub. Oil.
B. Install the cooling start set, check, repair, if necessary replace.
C. Shown on "the temp.of coolant below the normal temperature".
D. Check the level of lub. Oil.
E. Repair/ replace turbocharger.
F. Apply a temporary oil tank to start engine for identification.
G. Overhaul of engine.
H. Check cylinder end and liner, if necessary, replace.

18 Emitting black smoke

Causes

Remedies

A. Block of the air inlet system.
B. Faults on the fuel injector or wrong type of the injector.
C. Faults on the cool start system.
D. Apply wrong type or brand of fuel.
E. Block of the exhaust pipe.
F. Too low temperature of engine.
G. Improper gap of air door.
H. Air leakage Of the inlet pipe between turbocharger and cylinder cover.
I. Block of oil return pipe.
J. Thin air owing to too high ambient temp. or altitude.
K. Improper timing of oi1 supply.

A. Check if there is a b1ock of the air inlet system.
B. Check/adjust or replace the fuel injector.
C. Install the cool start set, check, repair, and if necessary replace.
D. Apply a temporary oil tank to start engine for identification.
E. Check if the exhaust pipe is blocked, and its size.
F. Shown on "the temp. of coolant below the normal temperature".
G. Adjust gap of air door.
H. Check block of oil return pipe.
I. Check block, torsion, or dent of oil return pipe.
J. Modification as per the methods stipulated in the sales manual of engine.
K. Check data of the oil injection pump, and adjust.

19 The engine can start but cannot keep running

Causes

Remedies

A. There is air inside the fuel oil system.
B. Leakage or block of the fuel system.
C. Gearing between the driving set and the engine.
D. Block of the fuel filter or freeze of fuel owing to too low temperature.
E. Block of oil suction pipes.
F. Apply wrong type or brand of fuel oil.
G. Water in fuel oil.
H. Insufficient preheating.
I. Block of air inlet system.
J. Damage of pressure pipe.

A. Remove air inside the fuel oil; tighten joints of oil pipes and the filter.
B. Check the vertical pipes of the oil tank.
C. Decoupling the driving set of the engine.
D. Replace the fuel filter and add a heater for fuel.
E. C1ean pipes.
F. Adopt a temporary oil tank to start engine for identification.
G. Replace fuel oil, install a oil and water separator.
H. Consult the user's manual or check the safety pipe, press button for reset if necessary, inspect wire, locked button, preheating relay. Contact with the authorized for replace of the preheating parts.
I. Clean air inlet pipes.
J. Install a new pressure pipe.

20 May turn the engine but cannot start, without smoke from the exhaust pipe

Causes

Remedies

A. No oil in the fuel box.
B. Faults on the electromagnet for stop.
C. Faults on the fuel closing valve.
D. No oil injected from the oil injector.
E. Loose of joints of oil suction pipe of oil transfer pump.
F. Block of the fuel filter or block of the oil suction pipe.
G. No oil inside the oil pump.
H. Block of air inlet or outlet system.
I. Break of the driving axle of the pump.
J. Damage of gear pump or wear of gear.
K. Faults on the oil transfer pump.
L. Block of the jet of the oil injector

A. Fill fuel oil.
B. Check the electromagnet and replace it if necessary.
C. Shown on "possible faults on closing valve".
D. Loose the oil pipe between the oil injection pump and the cylinder cover, start the engine to see if there is a leakage.
E. Tighten all pipe joints of the filter between oil tank and oil pump.
F. Replace fuel filter, check if flexible pipe is blocked.
G. Pump oil by the feeding pump.
H. Cheek if there are blocks of air inlet or air inlet or outlet system.
I. Contact with the agent.
J. Contact with the agent.
K. Check/repair the oil transfer pump, replace it if necessary.
L. Check/clean or replace the injector.

21 The engine has the start difficulty or cannot start, gives off black smoke

Causes

Remedies

A. Too low speed of the start motor driving the engine.
B. Gearing of the driving set and the engine.
C. Mistakenly apply cold start set.
D. Insufficient preheating.
E. Block of the fuel oil filter.
F. Air in the fuel system.
G. Block of oil suction pipes.
H. Block of air inlet system.
I. Water in the fuel oil.
J. Apply wrong type or brand of fuel oil.
K. Fault of oil injector or wrong type of the injector.
L. Loose of pipe joints of oiI inlet, oil return of the injector.
M. Fau1t of the oil delivery pump.
N. Fault of the oil injection pump.
O. Wrong timing of oil supply.
P. Wrong valve timing.
Q. Low compressed pressure.
R. Block of fuel closing valve.
S. Block of the exhaust pipe.

A. Shown on "unable to turn engine or too low turn speed".
B. Decoupling of the driving set.
C. Refer to the user's manual for how to operate the cold start system.
D. Consult the user's manual or check the semi-auto safety pipe, press button for reset if necessary, inspect wire, locked button, preheat relay. Contact the authorized for replace of the preheat parts.
E. Replace the fuel oil filter.
F. Remove the air.
G. Clean the oil suction pipes.
H. Clean the air inlet pipes.
I. Replace fuel, add a oil and water separator.
J. Adopt a temporary oil tank to start the engine.
K. Implement pressure test/ adjust or replace the injector.
L. Tighten the pipe joints.
M. Check/ repair the pump, replace if necessary.
N. Ask the agent to check the pump.
O. lnspect the data of the pump and adjust.
P. Adjusted as per the sipulated data.
Q. Shown on"low of compressed pressure".
R. Shown on"possible faults on the fuel closing valve".
S. Check if the exhaust pipes blocked.

22 The engine cannot be turned or only be turned slowly

Causes

Remedies

A. Insufficiently charged of the battery.
B. Break of main switch.
C. loose of a semi -- auto safety pipe at the connection box.
D. Improper contact or break of circuit.
E. Faults of the key switch.
F. Faults of the start relay.
G. Faults of the start motor.
H. Faults of any start circuit.
I. Water inside the engine.
J. Low temperature of lubricant oil.
K. Apply wrong type of lub. Oil.
L. Other inside and outside causes affecting turn of the engine.

A. Check the electrolyte level and add if necessary.
Charge the storage battery, replace it if necessary.
B. Close the main switch.
C. Press the button at the pipe for reset.
D. Remove any break or improper contact, check if there is oxidation, wash if necessary.
E. Replace the key switch.
F. Replace the start relay.
G. Contact the authorized personnel.
H. Check all other start circuit.
I. Contact with the authorized repairman, don’try to start the engine.
J. Install the lub. Oil heater at the bottom.
K. Replace lub. Oi1 and the filter or ensure correct type of lub. Oil.
L. Check if the crank is flexible.

Alternator

1 Too low voltage of the genset under a load

A. Check if the rotary speed of the genset is normal.
B. Check if the UFRO set of AVR is correct.
C. As per the test of excitation separation, check AVR.
D. Damage of rotary diode.

2 Too low voltage at free running of the genset

A. Check if the rotary speed of the genset is too low.
B. Check if l -- 2 connection of AVR or outside connected manual micro adjustment is perfect.

3 Too High of Output Voltage

A. Check if the rotary speed of the genset is too high.
B. Check if the load of the genset is of capacitive load (leading power factor).

4 Unstable Output of Voltage of the Genset

A. Check if the rotary speed is stable.
B. Check if the setup of stability is correct.

5 During running of the genset, no voltage outputs

A. Check the connection ofK1 -- K2 from AVR is correct and reliable.
B. Check the rotary speed of the diesel genset.
C. Check the residual magnetism voltage, charge magnetism if necessary.
D. As per the test of excitation separation, check alternator and AVR.

Electrical Control

1 Remote Emergency Stop Cannot Be Realized

A. Confirm the remote contact was normally realized.
B. Confirm the CV2 agreed adaptor was installed in 550, with correct connection.
C. Confirm CV2 related connection wires are correct free of miss.
D. Confirm the genset is of auto standby mode.
E. Confirm the secrete remote codes input correctly.

2 Remote Monitor Cannot Be Realized

A. Confirm the monitor software is correctly installed in a remote PC.
B. Confirm the setting of contact parameters of monitor interface correctly corresponding with the actual connection modes.
C. In case of contact of dialing numbers, confirm the MODEM correctly tested by 550, confirm correct settings of remote MODEM.
D. Confirm contact circuit correct and reliable, free of busy.
E. Confirm the contact interface correctly connected with the contact module.

3 The genset unable to stop automatically in the auto mode

A. Confirm the public power resumes normal completely.
B. Confirm there is no actions of public power inductor.
C. Confirm completion of delay of auto stop.
D. Check if the magnetic valve of fuel is normal, replace if necessary.
E. For the genset with the electronic speed adjusting system, confirm all EPG settings are correct and reasonable.
F. Confirm correct settings of oil volume of oil injection pump.

4 Unable to stop manually

A. Inspect the positions of key switch and control switch are correct.
B. , , Co, nfirm all ele, ctri, , cal control parts are normal.
C. Inspect if the magnetic valve of fuel is normal, replace if necessary.
D. For the genset with the electronic speed adjusting system, confirm all EPG , settings are correct and reasonable.
E. Confirm correct setting of oil volume of oil injector.
F. For 550, confirm the genset runs , man, , ually.

5 The genset unable to undertake load

A. Check if the voltage is normal.
B. Check features of load, confirm free of overload and leading power factor.
C. Confirm the handle of MCCB upwards and set of all items are correct and reasonable.
D. For clients equipped with ATS, especially inspect ATS and relevant parts.
E. Inspec, t all connection wires controlled by ATS, ensure there is no mistakes.
F. Confirm ATS transfer control switch isn't at the"MAINS" position.
G. In case of ATS transfer control switch away of the"AUTO" position, confirm the connected public power without normal voltage.
H. Confirm the power of the genset correctly connected with ATS terminals.
I. Confirm the main AC contactor of ATS flexible, without block.

6 Low Voltage Alarming

A. Measure the actual value of voltage output of the genset.
B. Confirm there is no deflection on meter indication.
C. In case of low actual voltage, inspect as procedures and readjust AVR.
D. Confirm normal rotary speed /frequency.
E. In case of normal actual voltage, check if the circuit for display of voltage is correct.
F. Especially inspect the three fuses are normal and connected reliably.
G. Confirm there is no big variant of three phases of voltage.
H. Confirm there is no miss of phase.
I. Confirm in case of alarming, there is no big variant of load.
J. Confirm the genset runs without overload.
K. For 550 electrical control systems, check if the alarming limit of low voltage is reasonable.

7 High Voltage Alarming

A. Measure the actual value of vo, ltage output of the genset.
B. Confirm there is no deflection on meter indication.
C. In case of high of actua1 voltage, inspect as procedures and readjust AVR.
D. Confirm free of capacitive load and leading power factor.
E. Confirm normal rotary speed/frequency.
F. In case of normal actual voltage, check if the circuit for display of voltage is correct.
G. For 550 electrical control system, check if the alarming limit of high voltage is reasonable

8 Stop Of Over Speed Fault

A. Check if there is an abnormal indication of the tachometer.
B. For the mechanical speed adjusting mechanism, check if the pull -- rod of throttle is flexible, and ensure correct adjustment.
C. For the electronic speed adjusting system, check if the pull -- rod of thrott1e is flexible and if the act mechanism acts correctly, and ensure correct adjustment of EPG.
D. Realignment and adjustment of limit of over speed protection.
E. For 50l, 520 electrical control system, check the position of micro switch behind is correct.
F. For 550 electrical control system, check if the stop of over speed protection is set reasonable.
G. After removal of faults, reset the a1arming signal on the control panel.

9 Low Oil Pressure Faults Alarming/Stop

A. Check the level of engine oil.
B. Check quality and viscosity of engine oil.
C. Check the temperature of engine oil.
D. Check if the sensor of oil pressure is damaged.
E. For 50l, 520 electrical control systems, check the position of micro switch behind is correct.
F. For 550 electrical control system, check if the low oil temp. alarming/stop is set reasonable.
G. Check if the filter of engine oil and oil passage are blocked.

10 High Water Temperature Faults Alarming/Stop

A. Check if the genset is overload.
B. Check if the heat radiator is blocked.
C. Check the tightness of the belt of fan.
D. After complete cooling of the genset, check if the level of cooling water is enough.
E. Check if the water temperature sensor is damaged.
F. For 50l, 520 electrical control systems, check the position of micro switch behind is correct.
G. For 550 electrical control systems, check if the high water temp. alarming/stop is set reasonable.
H. Check if the thermostat can be opened correctly.
I. Check if the gap of water tank and water pump is correct.
J. Ensure the temp. inside the room no more than 40

11 In case of the start motor running, the genset unable to couple

A. Check fue1 level, ensure correct connection of oil pipe.
B. For the genset with mechanical speed adjusting system, checks if the magnetic valve of throttle is correctly suctioned.
C. For the genset with electrical speed adjusting system, checks if EPG power is correctly connected and if the voltage is normal.
D. For the genset with electrical speed adjusting system, in the course of start motor running, check if there is a correct AC voltage signal at MPU.
E. Check if the rotary speed of the genset reached or excelled the set normal rotary speed for start.
F. Check if the fuel transfer system is blocked.
G. Check if the air filter is blocked.
H. At the cold areas, before start, ensure the genset is preheated

12 In case of the signal"START" correctly input, but manual /auto unable to start

A. Check if the emergency stop button is free.
B. Check if the control key is at the position of "STOP".
C. Check if there is fault indication, repair faults if necessary, and reset relevant information.
D. Check the battery voltage, in case of too low voltage, recharges the battery fully. In case of normal voltage, as per drawings, step by step check the voltage signal is correctly delivered to all control points such as magnetic valve of throttle and start motor, etc.
E. In case of all outside connections without problems , replace re1evant electrical control unit

13 In case of key turned to"START", the genset unable to star

A. Check if the key switch moves correctly.
B. Check if there is fault indication, repair faults if necessary, and reset relevant information.
C. Check the battery voltage, in case of too low voltage, recharge the battery fully. In case of normal voltage, as per drawings, step by step check the voltage signal is correctly delivered to all control points such as magnetic valve of throttle and start motor, etc.
D. Check if the emergency stop button is free.