Pramac Pmi3000 User manual

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Operator's manual
Portable Generator
Pmi3000
PLEASE READ THIS MANUAL
CAREFULLY BEFORE USING
Product ID(S/N): ___________________

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Introduction
Thank you for your purchasing PRAMAC generator.
This instruction includes the operation and maintenance of the Pmi3000 generator.
Contents in this book matches the up-to-date product when the book is printed.
PRAMAC reserves the right to modify the content, without further notice or responsibility.
Copyright is not allowed without written permission of PRAMAC.
As part of the generator, this book should be always attached if the product is resold.
Please pay attention to following words:
If the operation is not implemented as this instruction, it could cause severe
damage and personal injury, even casualty accident.
Please read all the labels and user’s guide before use.
Please use this product in well-ventilated area. Because the exclusion contains poisonous
carbon monoxide gas, which may lead to death.
Be sure to turn off the engine when refueling, then restart the engine after 5 minutes.
Check the fuel leaks or spillage, if so, please clean or repair before use.
Keep easy-to-fire materials(other oil and goods) away from the generator.
This label displays if the operation is not followed according to this instruction
book, it could cause personal injury or casualty accident.
This label displays if the operation is not followed according to this instruction
book, it could cause severe damage and personal injury.
Please contact PRAMAC if you have any doubt about the generator.
Just follow the instructions in this book, and PRAMAC generator is safe and
dependable. Be sure to read and understand the instructions before using, erroneous
operation will result in personal injury or damage to the equipment.

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Contents
1.Safety Precautions ................................................................................................ 4
2.Parts Identification................................................................................................. 5
3.Pre-operation Checking......................................................................................... 7
4.Start The Engine ................................................................................................. 10
5.Use Of Generator................................................................................................ 10
6.Switch Off The Engine......................................................................................... 16
7.Maintenance........................................................................................................ 16
8.Transportation And Warehousing........................................................................ 20
9.Troubleshooting .................................................................................................. 21
10.Basic Parameters.............................................................................................. 23
11.Electrical Schematics ........................................................................................ 24
12.Wheel kit Installation ......................................................................................... 25

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1 Safety Precautions
Be sure to operate carefully, ensure the safety of users and others
Don’t touch the muffler because it is hot when the generator is running or just
stopped. Put the generator indoor after it cools down.
The Exhaust system is hot when the generator is running or just stopped. Please
notice the warning labels to prevent burns.
If users operate the PRAMAC generator as the Operating Manual shows, it would
provide safe and reliable operation according to design requirements. Please read and
understand this book before operating the engine, otherwise it may cause injury to
personnel or damage to equipment.
Under certain conditions, gasoline is flammable. Be sure to refuel in ventilated
places and switch off the engine before refueling.
Do not refuel with engine still hot
Stay away from cigarettes and sparks when it is refueled. Please refuel in ventilated
places.
Wipe spilled gasoline immediately.
Restrict the use in high fire risk locations.
As the backup power of the building, connecting the generator to the power system
should be operated by a qualified electrician. It should follow relevant laws and electrical
codes. Otherwise, the electric current of the generator may feedback to the common
circuit, power company workers or other people may be electrocuted when they touch the
wire; because of the city power shock, the generator may explode, fire or cause fire of
other electrical equipment in the building.

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Make pre-operation inspection before starting the engine each time, in order to avoid
accidents or damage to the equipment.
Run the generator at least 1 meter away from the building and other equipment.
Be sure to run the generator in the horizontal plane ON GROUND level, fuel may
spill if the generator is slant.
Be sure to learn how to quickly turn off the generator, and known the operation of
relevant parts. Never allow anyone to operate the engine without proper instruction.

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2 Parts Identification
2.1 Overall shape, Figure 1.
Figure 1.
Real appearance can be different than pictures above
List of main parts of appearance:
Nr Part Name QTY Nr Part Name QTY
1 Front shell 1 8 Generator shock pad 2
2 Panel group 1 9 Tank 1
3 Inverter cover 1 10 Generator frame 1
4 Start handshandle 1 11 Muffler cover 1
5 Gasoline switch 1 12 Fuel tank cap 1
6 Oil level gauge 1 13 Air filter 1
7 Rubber handshandle 2 14 Wheel 2
1
2
3
5
4
6
7
8
9
10
11
12
13
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2.2 Control Panel, Figure 2.
European Style Panel(220-240V 50HZ):
American Style Panel(100-120V 60HZ):
Figure 2. Control Panels
SMART Fuel-economy Switch
When the generator is disconnected with the electrical equipment, generator is idling; when it
is connected with the electrical equipment, the engine will restore to the appropriate
speed.The default state of the switch is at ON position, the fuel consumption is automatically
adjusted according to the load size, to serve the purpose of saving fuel.
OFF: Represents that the SMART switch is turn off, and the engine is at its higher speed.
The SMART system can not run effectively when large instantaneous current is
required by the electrical equipment.
Please turn off the SMART switch to reduce the voltage change when the generator
and high electrical load are connected at the same time.
Please turn off the SMART switch when it is operated in DC status.

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3.Pre-operation Checking
Be sure that the generator is in the horizontal plane at ground level, and the engine is shut
down.
3.1Check the engine oil level
Please see SAE viscosity level in following picture:
Remove the dipstick on right rear , wipe the dipstick with a clean rag, insert the oil dipstick into
the filler opening, tighten and spin out to check the oil level. If the oil level is lower than the
bottom of the dipstick, fill recommended oil to the filler opening.
Oil capacity：520ml.
See Figure 3.
Conventional filled-up engine oil level (About 520 ml)
Figure 3. Oil Level Diagram
Use engine oil without detergent or 2-stroke engine oil may shorten engine life.
Please use strong-cleaning power, high-quality 4-stroke engine oil.
Choose engine oil with right viscosity, which is suitable for the average temperature
in your region.

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3.2 Check the fuel level
Please use motor gasoline type (better use lead-free or low-lead gasoline to reduce fuel
chamber coke). If the fuel level is low, please fill fuel to the shoulder of the fuel strainer. See
figure 4
Do not use mixture of oil and gasoline, or dirty gasoline.
Prevent dirt and water into the tank.
Tighten the fuel filler cap after filling up.
Fuel capacity：10L
Figure 4. Fuel level diagram
Start the engine without enough engine oil may cause serious damage to the
engine.
Engine oil alarm system will shut down the engine before the oil level falls under the
safety margin. We suggest you to check the engine oil level regularly to avoid any
inconvenience caus
ed by unplanned downtime.

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Alcoholic petrol
If you decide to use Alcoholic petrol, the Octane value should not be lower than recommended
by PRAMAC. There are two kind of Alcoholic petrol, one contains ethanol and the other
contains methanol. Do not use alcoholic petrol with over 10% ethanol. Do not use methanol
petrol without co-solvents and preservatives in the methanol. If there is co-solvents and
preservatives in the methanol, do not use the petrol with over 5% methanol.
3.3 Check the air filter
Check the air filter to ensure it is clean and in normal performance.
Open the service door on the left side, open the air filter cover and take out the foam filter from
the cover. If necessary, clean or replace the filter. See figure 5.
Under certain conditions, gasoline is flammable.
Please refuel in ventilated places, with the engine off. No smoke and fire in the
fueling region and gasoline storage area.
Fuel shall not overflow out of tank (on fuel on the fill opening). Tighten the fuel
filler cap after filling up.
Do not overflow the fuel because the fuel or mist may catch fire. Once the fuel is
overflowed, ensure the region is dried before running the engine.
Avoid long-time, repeated skin contact or gas inhalation, do not allow children to
contact the fuel.
Avoid in any case to fill the tank with engine still hot.
The fuel system or engine damage caused by using alcoholic petrol will not be
covered under warranty. PRAMAC does not guarantee the use of fuel with methanol
because the applicability has not been confirmed.
Please figure out whether the fuel contains alcohol before buying fuel in unfamiliar
gas station. When you use fuel with alcohol or you think that with alcohol, if the
generator is not running as expected, please change to use fuel without alcohol.

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Figure 5. Air filter structure
It is not allowed to start the engine without air filter, otherwise the dirt will enter the
engine through carburetor, which could result in rapid wear of the engine.

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4 Start the engine
4.1 Open the fuel valve, see figure 6.
Figure 6. Fuel valve knob in the state of open.
4.2 Pull the choke lever.
Do not use choke when the engine is hot or the temperature is high. See figure 7.
Figure 7. Choke activated for cold start
4.3 Turn the engine stop switch (on panel) ON. See figure 8.
Figure 8 The engine-stop switch position.
4.3 Gently pull the starter handle until feel force, then pull rapidly in
the direction of the arrow shown below. See figure 9.
If the engine is started after first time fuel-filling, or long time storage, or after the fuel
was run out, please open the fuel valve for 10 to 20 seconds before starting the engine.

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Figure 9 Pulling the starter handle.
4.4 Push back the choke lever when the engine is warm. See figure 10.
Figure 10 The choke lever in RUN mode.
Operating at high altitudes
At high altitudes, standard carburetor has strong mixture of air and fuel, engine running
performance reduces, and fuel consumption increases. In order to change engine running
performance, you can change the aperture of the main nozzle of carburetor, adjust the idle
screw. If the generator is always used at altitude over 1500m, please ask authorized agent
of PRAMAC to adjust these changes for you.
The horsepower will decrease each 3.5% with each 305m increase. The impact of altitude on
power is bigger without these adjustment.
If the nozzle is designed for high altitudes, while running in low altitudes, it could
cause low output power, overheat or even serious damage to the engine because of the
low fuel ratio.
Do not let the starter handle bounce back, take the handle back slowly by hand.
Do not let the handle rub the generator, otherwise the handle will have premature
wear.
■
Do not pull the starter handle when the machine is running.

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5. Use of generator
5.1 Use of AC
1. Ensure the ouput indicator (green) is on when starting the generator.
2. Make sure that the switches of connected equipment are turned off, then insert the
equipment plugs into the socket. See figure 11.
Figure 11 Equipment connects to generator
When using AC, DC socket can be used.
If you want to use AC and DC sockets together, the total capacity can not exceed
the sum of AC and DC capacity.
The electrical equipment (including wiring) should not have defect when connecting
to plug.
Continuous operation can not exceed the specified rated power in this manual. Max
power can be loaded for max 5 minutes.
Do not exceed the specified socket current limit.
Do not connect generator to household circuit, otherwise may cause damage to
generator or household appliances.
Do not use a generator for the purpose it can not be achieved, in addition, please
observe the following rules:
•Do not lengthen the exhaust pipe.
•If an extension cable is necessary, use a flexible cable with rubber sleeve
(meet the standard of IEC245 or relevant provision)
Extension cable length limit: 60 meters for 2.5mm² cable；100 meters for 4mm²
cable.

Keep the generator away from other cables such as distribution net
work.

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5.2 Output and overload indication, oil level indication
The output indicator light (green) is on under normal operation condition.
The output indicator light (green) will be off if the generator overloads or short circuit occurs in
the connected equipment, and the overload indicator light (red) will be on, the power of the
connected equipment will be cut off.
If the red light is on, you should turn off the engine to check the cause.
If the engine oil level light is on, you should check whether it should be refilled.
1 – Run
2 – Overload
3 - Low oil
Before connected to the generator, check the equipment status whether the
registration power exceeds the generator. Then connect the equipment cable, start the
engine.
Make sure the equipment is in good condition before connecting with the generator.
If the equipment is not running normally (low speed or sudden shutdown), you should
switch off the engine, then disconnect the equipment and repair according to detail fault.

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5.3 Use of DC
The output voltage is DC 17-30V when the DC socket is carrying idler. Only for the charging of
12V automatic battery.
The output current of DC socket will change according to the different position of the SMART
switch.
DC current:
SMART SWITCH
Model
OFF ON
(No AC output)
Pmi3000 8A about 6-7A
1. Connect the generator DC socket with the battery terminal for charging current.
Do not try to start the engine when the generator is still connected with the battery.
The generator may be damaged.
Do not confuse the positive and negative when connecting the charging cable
positive and battery positive. Otherwise the generator and battery may be seriously
damaged.
To avoid sparks besides the battery, please connect the charging cable to the
generator first, then connect the battery. The disconnection should start with the battery.
Please disconnect the battery ground wire before connecting the charging cable to
the auto battery. It will avoid the short circuit or spark if you touch the auto frame with
battery terminals accidentally.
The green and red lights may be on together when the generator is just started.
Normally the red light will be off after 4 seconds. If the red light is still on, please contact
PRAMAC service.

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2.Start the engine
When using AC, DC socket can be used.
DC overload may cause disconnection of DC protection reset switch. If it happens, remove
the load, then press the DC protection reset switch.
5.4 Low oil alarm system
The low oil alarm system is designed for preventing engine damage caused by low oil level in
engine. The system will turn off the engine automatically before the oil level is lower than the
safety line. (engine switch is still at the “ON” position) after the engine is turned off by the
system, if you restart the engine, the low oil level light will be on, and the engine will not run.
Please add engine oil in that case.
The battery may volatile explosive gases, keep it away from sparks and fire, charge
in ventilated place.
Battery electrolyte contains sulfuric acid, contact with skin and eyes may cause
burns, please wear protective clothing and mask.
A. If electrolyte is spilled on the skin, rinse with water immediately.
B. If the electrolyte is splashed in the eyes, flush with water IMMEDIATELY at least 15
minutes and call a doctor.
electrolyte is poisonous
If you accidentally swallow electrolyte, IMMEDIATELY call a doctor.
Keep it out from children.

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6.Switch off the engine
If you want to stop the engine in case of emergency, pull the cutoff switch to “OFF” position.
Regular usage steps：
1. Turn off the connected equipment, pull out the plug.
2. Pull the cutoff switch to “OFF” position.
3. Pull the fuel valve handle to the "OFF" position.
7. Maintenance
Maintenance and adjustment schedule are made to enable the generator in the best working
condition.
7.1 Maintenance instruction, see table below:
Periodic maintenance time (1).
Perform at every specified
month or operating hour
interval; wich ever occurs first.
item
First
use
Every
month or
20 hours
Every 3
months
or 50
hours
Every 6
months
or 100
hours
Every
year or
300 hours
Engine oil check ○○
change ○
Air filter check ○（2）
clean ○（2）
Spark plug clean-adjust ○
Spark arrestor clean ○
Sediment cup clean ○
Valve
clearance
clean-adjust ○（3）
Tank and filter clean ○（3）
Fuel tube check Every two years【if necessary, change（3）】
Notice:
（1） Normal maintenance running time.
（2） If used in a dusty environment, please check and clean it often.
（3） Maintenance should be done by PRAMAC’s authorized agent or agency, unless
Turn off the engine before any maintenance, if you must run the engine during
maintenance, it must be operated in a well ventilated place, because the exhaust
contains poisonous carbon monoxide.
Please use authentic PRAMAC parts, the usage of parts not approved by PRAMAC
may damage the generator.

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user has right tools or mechanical expert. If do the self inspection, user must
contact with local agent in advance.
7.2 Engine oil change
When the engine is warm, engine will be empty of oil easier and faster, see figure 12.
Figure 12 Change engine oil
1. Screw off and take out dipstick.
2. Disassemble oil drain bolt (or open oil drain valve, if there is ), exhaust scrap oil, then
tighten (or close oil drain valve, if there is).
3. Fuel recommended oil and check the oil level.
4. Tighten dipstick.
Oil capacity：0.52L
7.3 Air filter maintenance
Dirty air filter will block air into the carburetor. In order to prevent the carburetor breakdown,
please maintain the air filter regularly. If used in the dirty areas, need more frequent
maintenance.
1. Screw off the screw on the bottom of the air filter and disassemble the air filter cover.
2. Take out the filter element, use compressed air to blow or knock the dust out from filter
element inside, if seriously dirty, change it.
3. Install the filter element back to the Air filter cartridge, replace the air filter cover and
tighten the screws.
Never run the generator without air filter, otherwise engine will wear quickly.
Do not use gasoline or low flash point solvents to clean the generators, because
they are flammable and explosive under certain conditions
In order to meet environmental requirements, we suggest that you put the scrap oil
into a sealed container and send it to local service station or recycling center. Don’t pour
it on the ground or in the trash.

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Figure 13 Air filter cleaning
7.4 Spark plug maintenance
Spark plug recommendation：LG R6TC or WR7DC
To ensure the normal operation of the engine, the spark plug gap must be appropriate and
spark plug must have no coke.
1. Disassemble spark plug cap.
2. Remove the spark plug with a spark plug wrench.
Figure 14 Disassemble spark plug
3. Clean the coke on the bottom of spark plug.
4. Check spark plug visually, if it has gap, then scrap it. If you use the spark plug again, clean
the spark plug with brush.
5. Use feeler gauge to measure the spark plug gap, the gap should be 0.5-0.75mm
（0.02-0.03in）, if necessary, bend a electrode to adjust it.
6. Assemble the spark plug with hand and avoid screw dislocation.
7. After assembling a new spark plug with hand, tighten 1/2 circle and press the washer. If it is
an old spark plug, only need 1/8 or 1/4 circle.
8. Reinstall the spark plug cap.
7.5 Spark Arrestor repair, see Figure 15 .
The spark plug should be fixed, otherwise it becomes very hot and will damage the
generator.