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If you need data of valve clearance gap of the diesel generator, you can check on the operation and maintenance manual. If still can not find, try to ask your supplier whom supplies the diesel generator to you.
If you need to have a generator set in future, please refer to

Pramac... | Answered on Jan 06, 2020

The air duct is blocked by dust and the ventilation is poor, which makes the heat dissipation of the generator difficult. The dust and oil dirt in the air duct shall be removed to make the air duct unobstructed.

Pramac... | Answered on Dec 21, 2019

Check the fuel solenoid is getting power. It may be locked out by loow lube oil pressure and other things.

ALSO when restarting a diesel one OFTEN must "bleed" the fuel lines at each injector... same as when one inadvertently runs a diesel out of fuel. Crack the connectors at the injectors and crank till fuel comes out and tighten each one. Yes, it is a pain...

Pramac GBW30P... | Answered on Dec 07, 2019

what safety caused the alarm. if you cant restart it, it may be cause the problem that originally shut the engine down has not been fixed, it could be water level, low oil, high water temp, low fuel,over voltage, all of the above are probably run through the safeties. over volt, and water temp would probably clear its self after it sat a while. try turning off power to panel. for a couple minutes and see if it will reset, if not check water level. and oil levels

Pramac GBW30P... | Answered on Dec 06, 2019

make sure gen isnt stopt on protection overtemperature or oil level or coolant level. try to bridge protections one by one to find the course. first make sure all fluids are on level and coolers are clean. fanbelt tension and coolantthermostat can also be wrong.

Pramac GBW30P... | Answered on Dec 06, 2019

Low frequency means the RPM of the motor has fallen off.

Check your fuel is NOT contaminated or fuel filters plugged.

Further tests should focus on the govenor system. Possibly it fails when engine gets hot. the frequency is directly proportional to the engine speed.

Pramac GBW30P... | Answered on Dec 06, 2019

Please see the operation manual.
If you have plan to purchase a new diesel generator set in future, please visit at

Pramac... | Answered on Dec 05, 2019

You can changes to Auto mode.
Some generator has auto mode and manual mode. In generally, emergency generators have these two actions, when power grid is cut off, the generator will connect to machine automatically, then supply power to the machine.
If you need diesel generator set or more support, please visit at

Pramac... | Answered on Oct 12, 2019

I'm guessing some attempted a repair of a cracked plastic fuel tank or fitting. You need to determine what component is leaking and replace.

Pramac 5000 Watt... | Answered on Jun 25, 2019

I don't know your equipment, but the unbalanced term may refer to too large a load connected to one leg of your split phase service. Go to your load panels and try to get the amps drawn by your loads to be more equal. You may be over taxing one leg and have available capacity on the other, assuming you are running a 110/220 V split phase output.

Pramac... | Answered on Mar 15, 2019

website reliablestore it is very good.. I used it to repair my shredder it had some spark issue which wasn't easily fixed. you can go there and try

Pramac... | Answered on Feb 08, 2019

portable generator head stoped making power engine runs fine sircut brakers are fine

Pramac... | Answered on Jan 29, 2019

Water level, good thermostat, good water pump, fan working? All things to check.

Sometimes an airlock will prevent water circulation

ALSO verify your temp gauge and sensor is working correctely. A failure of these may appear as high temp and even shut machine down if the sensor is bad.

Pramac GBW30P... | Answered on Jan 22, 2019

The leakage fault of diesel generator is usually caused by the injection of corrosive coolant or seawater into the water radiator of the diesel engine.

Cause of failure: 1. The cooling water added to the cooling water radiator by operator is seawater, which results in the damage of internal waterway and external interface of diesel engine. Therefore, the use of diesel engines must be strictly in accordance with the provisions of the diesel engine operation. 2, the operator feed water radiator in the addition of strong anti-freeze corrosion, resulting in diesel engine waterway parts damage. Troubleshooting methods:
1.Disassemble damaged parts of diesel engine, replace damaged parts of diesel engine after washing water radiator and inner waterway of block with fresh water.
2, after assembly, adjustment, test machine found that the diesel engine returned to normal, the fault was eliminated.

Pramac GBW30P... | Answered on Jan 22, 2019

my 500 kva diesel generetors dosnt work since mornning its workes after 4 houres when the weather changed

Pramac GBW30P... | Answered on Dec 22, 2018

1: Check if the alarm is stopped, a, low oil pressure b, high water temperature c, overspeed, etc.;

2: Check if it is overloaded, whether the inlet and outlet pipes are unblocked

3: Check if the parts are broken or loose, and check if the fuel tank is short of oil.

4: Check if the fuel injection pump is damaged

5: Check the speed sensor, electronic speed control board, actuator, etc.

Pramac GBW30P... | Answered on Dec 22, 2018

You run again the generator but before running, check & mark the oil level. Then stop the generator & wait until the oil settle to the bottom of oil pan. Check the oil level again & if the oil level is higher than the marking before that's means you have an engine gasket leak.You need to replace that gasket.

Pramac GBW30P... | Answered on Dec 18, 2018

by finding the problem --check oil and circuits

Pramac... | Answered on Dec 11, 2018

Did you have a auto controller?
With the switch set to AUTO, the engine may crank and start at any time without warning. Such automatic starting occurs when utility power source voltage drops below a preset pevent or during the normal exercise cycle. To prevent possible injury that might be caused by such sudden starts, always set the switch to OFF and remove the fuse before work. Ing on or around the generator or transfer switch.

Pramac GBW30P... | Answered on Dec 07, 2018

The distance between the sensor and the diesel generator flywheel is too far or too close (generally this distance is approximately 2.5 + 0.3 mm). If the distance is too far, it may not be able to sense the signal. If it is too close, it may damage the working surface of the sensor. Due to the high-speed operation of the flywheel, radial (or axial) turbulence occurs. The distance is too close to pose a great threat to the safety of the sensor. It has been found that several working faces of the probe have been scratched. According to practical experience, the distance is generally about 2mm, which can be measured with a feeler gauge.

Pramac GBW30P... | Answered on Nov 21, 2018

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