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Classifications of Generators
Main Applications of Generators
How to select a suitable Generator for you?
How to do Proper Maintenance
Testing and Adjustment of the Generator
What's the warranty policy of JIUAN Power Generators?


1. Classifications of Generators
Their are numerous types of generators but we'll focus on the most common fuel types:
Diesel Generators for land application
Marine diesel generator
Diesel Welding Generator
Gas Generators Biogas generator
LPG Generator
Natural Gas Generator
Biomass/Syngas Generator
Wind Turbine Generator
Wind Solar Hybrid Power
Solar Generator

2. Main Applications of Generators
Gensets to be used as Emergency/backup/Standby Power

We provide solutions for all your power needs. Let us put our energy to work for you:

Get a quote an emergency power system is an independent power generation system that is legally required to feed equipment or systems whose failure may present a life safety hazard to persons or property. A standby power system refers to an independent power system that allows operation of a facility in the event of normal power failure.

Businesses and institutions can lose power due to:
Tornados Hurricanes Ice storms Capacity-related issues

In such events, our standby power systems provide uninterrupted power for essential operations and help businesses comply with life/safety codes.

Features and Benefits:

Diesel and natural gas generator sets from 8KVA to 2000KVA
Smartgen® control systems (Smartgen smart technology in integrated digital control)
Transfer switches from 30 to 3000 amps
Sound-attenuated enclosures
Rental power solutions
Networking solutions
Turnkey solutions for many applications
24/7 service and support
Gensets to be used as Prime Power

We provide solutions for all your power needs. Let us put our energy to work for you:

Get a quote Prime power is the need for power, continuously and for long periods of time. It is often used in remote or developing areas of the world where there is no utility service, where available service is very expensive or unreliable, or where customers choose to self-generate their primary power supply.

Our Gensets meet prime power needs by providing economical and clean prime power for various applications such as industrial or municipal installations. We design and build the solution that meets your needs, including:

Specialized solutions for challenging environments
Equipment reliability and durability
Options in prime mover technology turbines and diesel or natural gas reciprocating engines
System paralleling, remote operation and monitoring using our Smartgen® controls technology
Rental power for immediate or temporary needs
Dependable aftermarket support
3. How to select a suitable Generator for you?
Generators are usually chosen based on their maximum and rated power. One must calculate what the total load will e in order to effectively choose the proper generator. Some appliances and equipment require a higher starting wattage and then it tapers.

Rule of thumb is to take the running wattage and multiply by 3 unless the appliance or equipment is under a constant load such as light bulbs.

Click on Amps, Watts, Volts and Kilowatts for the formula to calculate wattage. Otherwise use the charts provided below.

You can use our Wattage Chart below to estimate the wattages of the tools, appliances and motors you will be operating at the same time. Add up the wattage of the tools, appliances and motors you will be running at the same time. Then, select the generator with the continuous wattage rating that meets or exceeds your total load.

How to choose an Effective diesel generator?

The cheapest operating costs are for Gas fueled generators. In sizes up to 100 KW Gas generators can be up to 30% more expensive than Diesel fueled generators with the same output. If Gas is available and you are going to operate your generator for more then 2000 hours a year, this can be the most cost effective solution Gas is also much more environment friendly. Kerosene engines are not expensive to buy and have comparatively low running costs. They are limited in output generally not exceeding 5KVA.An additional advantage in using Kerosene fuel is that it is less volatile and thus much safer than Petrol. Petrol Engines are the cheapest to purchase and the most expensive to operate. If you need a Generator to operate for up to three hours a day, they are a good choice. In general, Petrol fueled generators are limited to maximum output of 20KVA and minimum speed of 3000 RPM. Diesel Generators are commonly available with outputs from 5 KVA up to 2500 KVA. They are significantly cheaper to operate and maintain compared to Petrol, but more expensive then Petrol engines. If you need a generator for more then 3 hours a day, or a minimum of 1500 hours annually, it is recommended that you to buy a Diesel Generator.

Diesel Generators are machines that generate electricity. The two main components of the diesel generator are the engine which supplies power and the alternator that turns power into electricity.

Choosing the right diesel generator may look like a difficult task, but choosing the right one can give you the most efficient and most effective diesel generator for you. First is to identify the tools and appliances you want to operate with your diesel generator. Next is to determine the required power for each item. Then add the required watts of each item that will be running all at the same time. Last is choosing the generator that has rated watts that exceed or meet the total power required for the tools. Another important thing to keep in mind is the Motor Starting. Keep in mind that induction type motors, like those that run sump pumps, refrigerators and compressors , typically require 2 to 3 times their listed running watts to start.

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4. How to do Proper Maintenance
Safety RulesImportance of Safety Cautions and Necessary Conditions
Please read this instruction manual before operating the generator set (Generator) to obtain know-how on the rules and equipment referred to in this manual. Ensure that the installation and running-in of the Generator are done in conformity with the instructions,and the operation and maintenance staff is skilled, responsible and experienced. Disobedience of the instructions and safety rules may cause severe results such as halt of the equipment, mechanical damage, personal injury and other nnecessary losses. AOSIF Generator is designed to ensure safe operation, however it can’t be operated safely if the operation and maintenance staff on the worksite ignore the precautions and procedures as described in this manual.

Electrical Hazard Warning
1.The generator can only work on loads that correspond to its electric parameters and rated power output. Overload is prohibited.
2.National and international electric regulations are applied. Electricians must obtain appropriate professional qualifications before they install any electrical equipment. When the switch is in “ON” position, a sign must be used in obvious position to indicate such status to avoid accidents.
3.Do not connect the Generator directly to the power supply system of the building. Electric shock may occur or the Generator may be damaged by sudden turbulent in the municipal power line. The Generator should only be connected to the municipal power system through a safeguarding switch.
4. Appropriate neutral line grounding must be done in order to prevent a sudden voltage surge or undetected grounding faults.
5. The following measures shall be taken to avoid electric shock:
a. switch off the power supply when protections are removed or work is carried out on an electric equipment;
b. when approaching electric equipment, do not set foot on metal or wet cement ground around the equipment. Lay dry wood pads on the ground and cover it with rubber insulation sheets;
c. do not touch electric equipment with wet skin or wet clothes/shoes.
6. Be extremely aware of the danger of working on electric objects. High voltage electricity may result in severe injury or death. Do not change the lock devices discretionally.
7. Before running the generator, check the insulation resistance of the output cable with a 500V megohm meter. Ensure that the resistance value is no lower than 2 MΩ.

Combustion Hazard Warning
1. Ensure that no open flames or sparks occur in the proximity of the Generator, fuel tank and particularly the charging battery. Fuel vapor and hydrogen emissions from charging battery are easily explosive.
2. Unless the fuel tank is separated from the Generator, refueling is prohibited while the engine is running. Contact between fuel and hot engine surface or exhaust gas may cause fire.
3. The Generator room must be equipped with appropriate fire extinguishers.

Exhaust Hazard Warning
1.Fumes exhausted by the engine are poisonous. The exhaust system must be installed in strict conformity with the safety rules and technical regulations and be maintained in good condition so that there are no leaks on the exhaust ducts or no backflow of the exhaust gases into the Generator room/building.
2.Good ventilation is required for all equipment.

High Temperature Hazard Warning
1.While the Generator is running, avoid contact with the exhaust pipe, radiator, hot parts, hot oil, coolant and exhaust gas to prevent scalding.
2.While the Generator is running, do not open the pressure cap of the radiator or heat exchanger. Do it after the generator has cooled down.

Other Warnings
1.Do not wear loose clothes or ornaments while working near rotating parts or electric equipment. Loose clothes may be caught by the rotating parts and ornaments may cause short circuit that in turn results in electric shock or fire.
2.Tighten all fixings on the Generator. Apply guards to the fan and drive belt.
3.Before starting the Generator, disconnect the starter battery first with the negative terminal. This is to prevent accidental starting of the engine.
4.While the Generator is running, do absolutely not disconnect the battery from the charging lead cable or the batter charging system may be damaged.
5.Personal protections must be worn by staff working near the Generator and associated equipment. These protections include those that free the staff from direct contact with chemical liquids such coolant additive and battery electrolyte and ear covers that shield the staff from constant exposure to machines noise.
5. Testing and Adjustment of the Generator
Check the start system:
• Electric starting
---check whether the electrolyte proportion of the starter battery is between 1.240 and 1.280. If the ratio is lower than 1.180, it means that the there isn’t enough electricity in the battery.
---Ensure that the electric circuit is correctly connected and the control system is preparing for the starting. The air clutch shall be disengaged.
---Ensure that the connection terminals on the battery are not fouled or oxidized. If so, rub off the foul or scales. ---Ensure that the electric contact pins on the starter motor and the solenoid provide good contact.
• Pneumatic starting
---Ensure that there is no leakage in all sections of the air pipes including joints.
---Ensure that the pressure of the air bottle is between 2,500 and 3,000 kPa.
Generator Adjustment
There are two types of JIUANPOWER Generators, ordinary and automatic. Please refer to their respective instruction handbook for the starting methods.
① Starting
a.First, adjust the engine to idling speed (500-700r/min). For engines with mechanical speed governor, use the speed control arm to adjust the speed. For engines with electronic speed governor, use the idle knob on the speed controller to adjust the speed.
b. Switch on the power supply. Start the Generator if the warning lamp gives out no warning signal (for Generator equipped with protection mechanism).
c. Generators equipped with preheating and prelubricating mechanisms can be started if the preheating and prelubricating processes have been completed. Press down the start button. If the Generator is not started within 10 seconds, release the start button immediately and try it a second time after a 2 minutes interval.
If the starting effort fails for the third time, do not try again. Find out the problems and fix them. After that the Generator may be restarted and the interval between each starting trial shall not be less than 30 seconds.
d. When the Generator is successfully started, release the start button immediately. Meanwhile the amperemeter for the charging current shall points to the positive position or the charging voltmeter indicates a charging current voltage≥25V. These mean that the charging is working well. For Generators equipped with working conditions protection mechanism, if light or acoustic warning is signaled, the Generator must be stopped for a check.
e. The idling speed of the Generator shall remain between 500 to 700r/min. Keep a close watch on all the instruments and pay attention to abnormal noises or phenomenon. If there is any abnormity, decision must be made as whether to stop the Generator.

② Running
a. After the Generator is started, increase the engine velocity gradually to a level between 1,000 and 1,200 r/min to warm it up. When the coolant drained from engine eaches 450C, the engine can be revved up to rated speed. If the Generator can work well at no loads, engage the Generator circuit breaker to supply power to the load. If the generator can not automatically establish a voltage, please check whether the AVR panel is working normally and magnetize the generator if necessary. When voltage is established, adjust the voltage-variable resistor to pinpoint the no-load voltage to the rated value and then engage the circuit breaker to supply power to the load.
b. If several Generators work in parallel, the operation staff shall ensure that the Generators have synchronized phases before turning on the parallel switch. This is to avoid impacts on the Generators from phase variation.
c. If the paralleling fails for several time, please remove the load, separate the Generators and adjust each Generator individually.
d. Exert realtime monitoring on the working conditions of each parts during the normal operation of the Generator. Visit the instruments and warning lamps and record the readings once an hour. Usually, the coolant temperature is 900C and shall never exceed 950C.
e. Check the amount of fuel and oil regularly. If the fuel level goes below one third of the tank, it needs to be refilled. If the oil level on the dipstick is below the minimum mark, more oil is needed.
f. Load variation shall be gradual and even. Except in emergencies, sudden engagement and disengagement of loads are prohibited. The Generator shall not work at full load before the coolant past the engine reaches 550C and the oil reaches 450C.
g.For Generators in noise-proof rooms, regular access into the room is required to check the working conditions of the Generator and record instrument readings. If there is any abnormity, solve them as soon as possible.
h. During the operation of the Generator, dedicated personnel is required to check and replace air, fuel and oil filters. If there is any leakage of air, fuel and oil, have them fixed as soon as possible.
③ Stop the engine
b.Diminish the load gradually until completely remove it from the Generator. Disengage the Generator circuit breaker and let the engine run at idling speed for 3 minutes before it comes to halt. Try not to stop the engine at full load to avoid overrev.
c.If open cooling system is used, shut off the water inlet. In cold environment where the ambient temperature drops below 00C, the remaining cooling water in the cooling system shall be completely drained so that the mechanic parts of the machine would not be damaged by freezing. Coolant with anti-freezing additives is an exception.
d.Backup Generators or Generators seldom used shall be sealed with grease as required. If not grease sealed, they must be started to run at load for 5 to 10 minutes as least once per week to avoid rusting of the inside parts.
e.The Generator can be stopped emergently in the following way: disengage the Generator circuit breaker quickly and place the throttle in the “stop” position to shut off fuel supply after the load is removed. This will completely halt the engine.
f.After the Generator stops running, a timely check must be carried out on the Generator surface. Wipe off the grease on the Generator, record the time it stops, check the condition of the battery and render the Generator ready for next start.

Running In Principles
Before putting a new Generator into operation, the Generator must be run in according to the technical instructions in the user manual for the diesel engine. Proper running in smoothens the surface of the moving parts and prolongs the life of the engine. For old Generators that haven’t been used for a long time,run-in shall also be conducted before retesting them. When running in the Generators, increase the engine speed and load on a gradual basis to ensure a good run-in result. Engine oil shall be watery at the beginning of run-in and then increase the viscosity gradually.
During the course of run-in, try not to let the Generator operate at empty/low loads for long periods. Or it will cause the following results: decreased fuel efficiency, oil/diesel fuel spills from the exhaust pipe, carbon deposits on the piston and piston ring groove, incomplete combustion and fuel intrusion into the oil. Therefore the Generator is not allowed to run at low load for more than 10 min. Backup Generators must run at full load for at least 4 hours every year to burn off the carbon deposits in the engine and exhaust system so that the carbon deposit will not impair the life and quality of moving engine parts.
Steps of Running In
a)Run the Generator at no-load. Check the Generator thoroughly as per methods aforementioned. If there is no abnormity, start the Generator. Tune the engine speed to idling and let the engine run for 10 min. Check the oil pressure and listen to the running sound of the Generator. Stop the engine.
b)Open the side cover of the cylinder block and feel with hand the temperature of the main bearing and the connection rod bearing. The temperature shall be no higher than 800C or such as your hand would get burnt. Monitor the conditions of all working parts. If all the parts have appropriate temperature and are in good condition, then proceed with the following step.
c)Raise the engine speed from idling to rated gradually. First, rev up the engine by 200r/min, let the engine run for 2 min and then repeat the revving until the engine reaches the rated velocity. Nevertheless, the total amount of time for the engine running at no-load shall not exceed 5-10 min. During run-in, the coolant temperature shall always maintain at between 75-800C and the oil temperature no higher than 900C.
d)Connect the Generator to the load if everything is ok with the Generator and the load is in conformity with the technical requirements. Increase the load in a step-by-step way while the Generator runs at rated speed. First maintain the load at 25%, then raise it to 50% and then 80%. During run-in, check the oil level every 4 hours , replace lubricant, clean the oil pan and oil filter.
e)Check whether the main bearing screw cap, connection rod bearing screw cap, cylinder head screw cap, and fuel injection pump and injector screws are tightly fixed. Ensure that the valve clearance is right or adjust it when necessary.
Expected Performance after Run-in
a)The Generator can be started quickly without problems.
b)At rated load, the Generator works stably, steadily with no strange noises.
c)When the load changes greatly and abruptly, the diesel engine can return to a stable rev as quickly as possible. When running at high velocity, the engine doesn’t get overrevved neither does the speed fluctuate. When running at a low velocity, the engine doesn’t extinguish neither would any of the cylinder cease working. The transition from one load to another is smooth and the color of the engine exhaust smoke is normal.
d)The temperature of the coolant and all lubricated parts is normal and the oil pressure is within expected level.

Service Checklist Importance of Service
Proper Maintenance and service, particularly preventative services, are vital to prolonging the life of the Generator and lowering operation cost.
Guidelines for service
• Use the suggested service interval described in the instruction of Ettespower as a reference for daily maintenance.
• Service shall be done according to the technical requirements in the instruction manual for the engine and alternator specified for the Generator.
• Service interval shall correspond to the specific purpose of use and working environment of the Generator.
Service Cycle Checklist
a) Daily Service
1. Check the instrumentation panel
2. Check the coolant level of the cooling system
3. Check the maintenance indicator of the engine air filter. Clean if necessary.
4. Check the engine oil level
5. Drain away the water and deposits in the fuel tank and fuel pre-filter
6. Check the coolant heater. Ensure it works normally.
7. Check the engine
b) Service after the first 250 hours of operation
1. Check the engine valve clearance and adjust if necessary
2. Test the engine rotating clutch plate
3. Test and clean the magnet speed sensor
4. Replace lubricant oil and filter
5. Replace coolant filter
6. Clean and/or replace fuel filter
c) Service for every week or 50 hours of operation
1. Check air filter
2. Drain away the water in the fuel pre-filter
3. Check the level of the battery electrolyte
4. Check the engine oil level
5. Check the coolant level
6. Check the engine exhaust piping
• Check the fuel plumbing
• Check the electric wirin
• Check the sensors and warning signal indicators to ensure their reliability
d) Service for every month or 100 hours of operation
1. Check the air intake and exhaust systems to ensure they are not obstructed
2. Check the engine exhaust system to ensure there is no leakage
3. Check the tension of the drive belt
4. Check the voltage and electrolyte proportion of the battery.
5. Check the battery charger
6. Check the reliability of the ATS transfer switch
7. Check the output voltage and frequency of the alternator
8. Drain away the condensed water in the engine exhaust pipes
9. Drain away the water in the fuel pre-filter
10. Test the on-load capability of the Generator
e) Service for every 250 hours of operation
1. Add anti-corrosion agent into the cooling system
2. Lubricate the drive bearing of the fan
3. Check the hose and fixings of the cooling water tank
4. Clean the radiator
5. Replace lubricant oil and oil filter
6. Replace coolant filter
7. Clean and/or replace fuel filter
f) Service for every 6 months or 500 hours of operation
1. Replace air filter
2. Check the coolant
3. Check the tension of the drive belt
4. Check the insulation and fire proofing
5. Check the electric wiring
6. Check the firmness of bolts, screws and parts subject to vibration
7. Check and adjust engine valve clearance
8. Check and adjust fuel injection advance angle
9. Drain away the deposits in the main fuel tank
10. Clean the terminal of the battery
11. Clean the rotor and stator of the alternator with compressed air.
g) Service for every year or 1,000-2,000 hours of operation
1. Replace coolant
2. Replace fuel pre-filter
b.1. Replace engine oil and oil filter
2. Replace fuel filter
3. Clean the vent of the engine crank case
4. Adjust and tighten loose parts
5. Check and adjust valve clearance
6. Check and adjust fuel injection
7. Check the turbocharger
8. Check the oil pump and water pump
9. Check the transmission mechanism and corresponding phase
10. Check the Generator protections
11. Check and adjust the magnetoelectric rev sensor
12. Check the winding wiring and electric connections
13. Measure the electric insulation resistance
b) Service for every two years or 2,000-3,000 hours
1. Check the vibration damper for the crankshaft
2. Replace coolant and clean the coolant system
3. Load capability testing

6. What's the warranty policy of JIUAN Power Generators?
This Warranty Policy is for all series of JIUAN Power diesel generators, gas power generator and concerning equipments used in Chinese domestic and overseas markets.

1). As per international common standard, the warranty will end when any of following conditions occurs: A). 12 months after the date of delivery to end user. B). 1500 running hours (accumulated).

2). During the warranty period, if there is malfunction raised by poor manufacturing workmanship & quality or defective materials, Ettes Power will provide FREE accessories, spare parts for repairing and replacement. If necessary, Ettes Power will send engineers to the user’s location to do repairing FREE OF CHARGE.

3). If the malfunction is out of the scope of the warranty, the user should bear the charges of accessories, spare parts for repairing at the manufacture’s price. If necessary, Ettes Power will send engineers to the user’s location and the user should bear all cost including air tickets, room & boarding, extra charge USD 100 per man per day.

4). In order to judge whether the malfunction is caused by the user or by Ettes Power defective manufacturing quality, the user is prohibited from dissembling or attempting to repair the generator without prior consent from Ettes Power. Otherwise, the warranty will be NULL or VOID.

5). During the lifespan of genset after warranty period expires, Ettes Power is still supplying technical support, damageable spare parts at manufacture’s price.

Regarding to Global Associated Warranty
In addition to warranty from Ettes Power, the genset’s components of Engines, Alternators, Control systems and other parts are under global-wide warranty from the original manufactures. They are including but not limited to Stamford alternator, Leroy Somer alternators, Marathon Alternators, Siemens Alternator, Kaijieli Alternator, Cummins Engine, Perkins Engine, MTU Engine, Volvo Penta engine, Deutz Engine, SDEC 135 series engine, JDEC 190 series engine, Deep sea controller, Smartgen Controller, Czech ComAp controller, and Denmark DEIF controller etc.

The User’s Responsibility
Maintenance is the very key to reliability and durability. The user is requested to do proper-operation with the genset according to Ettes Power’s user manual. The user is requested to do periodic maintenance and to replace damageable spare parts according to Ettes Power’s maintenance book.

Warranty LimitationThis warranty does not cover damages caused by following reasons
1). Incorrect operation, incorrect connection, problems caused by re-assembling without prior permission and other man made malfunction which don’t comply with user manuals from Ettes Power

2). Malfunctions caused by lack of proper maintenance as suggested.

3). Malfunctions caused by Force Majeure, which will free both parties from liability and obligation when an extraordinary event or circumstance beyond the control of the parties, such as a war, strike, riot, crime, or an event described by the legal term "act of God" (e.g., flooding, earthquake, volcanic eruption), prevents one or both parties from fulfilling their obligations under the contract

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