Launtop LDG12 User manual

1. Safety Instructions
2. Specifications
3. Components of enerator et
LDG12 omponents
LDG12S omponents
4. Preparation efore tart
LDG12 heck efore peration
LDG12S heck efore peration
5. Operation
6. Stopping enerator
7. Maintainance
LDG12 heck and aintenance
LDG12S heck and aintenance
8. Appendix and uggestion
9. Urgent roblem Solution
10. Electrical Wiring Diagram (Single phase)
11. Electrical Wiring Diagram (Three phase)
GS
C
C
BS
CB O
CB O
G
CM
CM
S
P
CONTENT
1
2
3
4
5
6
7
7
9
10
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13
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1. Safety Instructions
Notes: Please read this manual carefully and make sure well understanding to
avoid serious damage on users or products.
• Do careful inspection before starting each time.
• In order to prevent fire disaster and keep the generator set under well ventilation
condition, please keep the generator set at least 1 metre from other objects. And
make generator set far away from combustibles.
• Keep kids and pets far away from running generator set to prevent empyrosis
and other possible injuries.
• Make every operation step well known and forbid any person who are not
trained operating generator set.
• Make sure adding fuel under well ventilation condition while the generator set is
shutting down. Fuel is combustibles and can easily cause explosion.
• Do not overfill the fuel tank, there should be no fuel on the fuel cap.
• Make sure the fuel cap is screwed tightly.
• If any fuel spill, must clean and make complete volatilization before starting the
generator.
• Make sure there are no cigarretes, fires and sparks on where the generator is
refueled or fuel storage.
• Diesel engines produce toxic carbon monoxide exhaust fumes, do not breath
exhaust fumes. Never operate unit in enclosed areas or inadequate ventilated
areas.
• Operate the unit on stable ground, otherwise the fuel would spill out.
• The exhaust of muffler is very hot when operation, even after use, avoid
touching the engine or muffler while they are still hot. To avoid fire hazard or
burn, move and store the unit when completely cool down.
-1-

2. Specifications
Generator Engine
Model
Engine model
Type
Bore mm
Speed rpm
Max.output hp
Starting system
LDG12(Open frame) LDG12S(Silent)
LDG12 LDG12-3 LDG12S LDG12S-3
LA290F
Air cooled, 4-stroke, Twin-cylinder
90
3000/3600
20
Electric start
Fuel comsuption g/kw.h
≤350
Type
Frequency Hz
Voltage V
Rated output
Max.output
Power factor
Fuel tank capacity
Duration of full
KVA
KVA
L
h
Brush/Brushless,
AC single phase
Brush,
AC three phase
Brush/Brushless,
AC single phase
Brush,
AC three phase
50/60
110,115,120,
220,230,240,
110/220,115/230,
120/240
220/380
230/400
220/380
230/400
110,115,120,
220,230,240,
110/220,115/230,
120/240
10/10 12.5/12.5 10/10
11/11 13.75/13.75 11/11
1.0 0.8 1.0 0.8
25 25 60 60
≤5.5/5.0 ≤12/11.5
Size (LxWxH) mm
910×578×668
Net weight kg
170 295
1160×675×945
12.5/12.5
-2-
13.75/13.75
174 300

3. Generator Set Assembly Components
LDG12 omponentsC
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Quantity
1
1
1
1
1
1
1
6
2
1
2
1
1
1
1
1
Description
Top cover
Frame
Engine side cover
Front cover
Muffler assy
Air cleaner assy
Engine
Shock absorber
Lock wheel
Alternator
Wheel
Control panel
Battery
Motor side cover
Fuel tank
Back cover
-3-

LDG12S omponentsC
Description Quantity
Item
1
2
3
4
5
6
7
8
9
10
11
12
Control gate
Control panel
Battery boards
Front cover
Left door
Upper plate
Rubbe rcover
Alternator clapboard
Alternator
Muffler heat
insulation cover
Muffler assyⅠ
Engine
13
14
15
Item
Description Quantity
16
17
18
19
20
21
22
24
23
Muffler assyⅡ
Shock absorber
Battery
Inner cover
Air cover
Back cover
Bottom seat
Fuel tank
Wheel
Lock wheel
Door lock cover
Right door
1
1
1
1
1
1
1
1
1
1
1
1
1
6
1
1
1
1
1
1
2
2
2
1
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4. Inspection Before Operation
LDG12 Check Before Operation
1. Oil level
Notice: Checking oil level before operation
each time.
Opening lock button, and then raise upper
cover.
Loosen oil gauge, clean it with dishcloth,
and then insert into filter neck (do not
screw). Adding engine oil if it below the
lower limit (includes lower limit) when take
out, the ways of adding oil as below.(7.1. ), Finally,
install and plug oil gauge.
Notice: It will cause engine damaged seriously when the
generator is running in the shortage of lubricating
oil.
Check any damage of the battery, if damaged, please
replace battery.
①
②
①
③
UPPER LIMIT
LOWER LIMIT
2. Fuel level
Caution: Please refuel in a well ventilated place, make sure there is no smoking or
flames and sparks when refuel.
①Open the generator cover,
unscrew the fuel tank cap.
② Check fuel level, if it is very
low, add the fuel.
③Filling the fuel to the fuel
filter shoulder.
④Screw the fuel tank cap well,
fit the generator cover.
-5-

LDG12S Check Before Operation
1. Oil level
2. Fuel level
Notice: Checking oil level before operation each
time.
Open right door, You will see the oil gauge.
Loosen oil gauge, clean it with dishcloth, and then
insert into filter neck (do not screw ). Adding
engine oil if it below the lower limit (includes lower
limit) when take out, the ways of adding oil as
below.(7.1. ), Finally, install and plug oil gauge.
Notice: It will cause engine damaged seriously
when the generator is running in the
shortage of lubricating oil.
Caution: Please refuel in a well ventilated place,
make sure there is no smoking or flames
and sparks when refuel.
Open left door, check the fuel volume indicator.
f fuel level is low, unscrew the tank cap, fill the fuel though fuel filter. After filing
fuel, screw back the tank cap.
If generator won't operate for a period time, drain remaining fuel through the
discharge hole in the bottom of fuel tank (located in the bottom of generator
below panel).
Check any damage of the battery, if damaged, please replace battery.
①
②
①
①
②
③
I
UPPER LIMIT
LOWER LIMIT
OPEN
Fuel volume
indicator
Fuel tank
cap
Battery
boards
Battery
-6-

5. Operation
Single Phase ontrol anelCP
(1) Checking before operation
(2) tarting generator
3) AC application
Turn the AC circuit breaker switch to “OFF” position, To protect your personal
security, make sure the generator should be ground.
lectric starting
Turn the starting key at “start” position (no more than 8
seconds), remove your hand from the key as soon as the engine
starts and let the key return automatically to initial position. If the
starting motor doesn't start, please wait for about 30 seconds
before attempting to start again.
In accordance with the actual situation to connect the load
through the load terminals or wiring socket.
Connect AC circuit breaker, the genset begin to offer power.
Caution: Do not stop generator when it's with load. it will destroy the
generator.
S
E
(
①
②
6 topping enerator.SG
STARTER SW
ON
OFF
START
BREAKER
ON
OFF
OIL ALERT
0 100 200 300
V
POWER VOLTMETER BREAKER
STARTER SW.
START
OFF ON
Starter switch
AC output
AC circuit breaker Starter switch
Ground pole AC output AC output Ground pole AC output
AC circuit breaker
STARTER SW
ON
OFF
START
BREAKER
ON
OFF
①Turn off AC breaker
Turn the breaker switch to “OFF” position.
②urn off starter switch
Turn the key to “OFF” position.
T
-7-
BREAKER
ON
OFF
BREAKER
VOLTMETEROIL ALERT POWER
START
STARTER SW.
OFF ON
UVWN
0 150 300 450
V
Three Phase ontrol anelCP

7. Maintenance and Remedy of Generator Set
Notice: Proper maintenance is not only the basis of safe, economical and easy
way of generator operation, but also helpful to reduce the air pollution.
Warning: If the maintenance instructions are not followed properly, it may cause
serious personal injury.
Maintain period
Every
time use
The first
month or
20 hours
Every three
months or
100 hours
Every three
months or
100 hours
Item month
working hours
Oil
Air cleaner
element
The valve gap
The liquid of
the battery
Oil filter
Fuel filter
Fuel pipe
(Second time)
Check
Renew
Check
Clean
Check-
adjust
Check
Clean
Renew
Renew
Check Every two years or necessary to renew
(First time)
Maintenance Schedule
Recommend oil
4 stroke diesel engine oil, API CE, CF
the same as the CG (SAE10W-30) oil.
20w 40
10w 40
SAE
10w
20w
20
30
40
-30 -20 -10 010 20 30 40 (
020 100(F
40 60 80
C
Recommend number
Can use range
A.P.I diesel engine maintenance classification
Oil should be CE or over CE standard
-8-

LDG12 aintenanceM
1. hange the oil
2. Air cleaner
C
①
②①
②
①
Please prepare the oil container under the drain plug , use the fork to release
the drain plug, then begin to pull out the oil, when the oil pull over, if necessary,
use the diesel to clean the inside of the cylinder block. In the end lock the drain
plug back.
Open the lock, over the front cover (4.1. ), screw the cylinder head oil cap (2)
as the photo, pull the oil until reach the oil gauge max limited (4.1. ), in the
end screw back the cylinder head stud.
Remove the side plate of the engine, release the clip, unload the lower half part
of the air cleaner, and take out the filter element in the middle; wash the filter
element with diesel fuel and put it back in the air cleaner after it is dry.
Oil cap
Drain plug
Clip
-9-

LDG12S Maintenance
1. hange the oilC
①Open left door, use the fork to release the drain plug (don't take out screw), put
the oil guide groove under the drain plug, let its outlet connect with oil
container, then completely remove the drain plug. Then begin to pull out the oil,
when the oil pull over, if necessary, use the diesel to clean the inside of the
cylinder block. In the end lock the drain plug back.
Move the plastic rounded lid on the top of genset, unscrew the cylinder head oil
cap, fill the oil until reach the oil gauge max limited (4.1. ), in the end screw
back the cylinder head stud.
②
②
Drain plug
Clip
Oil cap
Plastic rounded lid
Oil guide
groove
Oil container
2. Air cleaner
①Move the upper plate and back cover of the generator, you will see the air
cleaner. release the clip, unload the lower half part of the air cleaner, and take
out the filter element in the middle; wash the filter element with diesel fuel and
put it back in the air cleaner after it is dry.
-10-

8. Appendix and uggestionsS
1. Storage
2. Storage instructions
3. Transport
It is necessary to store the generator in correct way to keep generator in good
condition. Following steps are to protect the generator from rust and corrosion
which would damage its performance and appearance. Besides, the generator will
start easier with these steps.
Cleaning
If the generator has just run over, clean it after cooling at least 2 hours. Then
clean the surface of generators, paint the damage part, and coat with a thin
layer of film.
Fuel
Diesel fuel deteriorates during storage, which will make the starting of
generator more difficult and produce glue materials that would clog the fuel
system. It is necessary to clean or replace the fuel system if diesel fuel
deteriorates during storage.
Storage room should be of good ventilation and far from fire place like stove,
water heater, dryer, etc, in order to avoid possible serious injury and damage to
equipment. Storage room should not be in the wet areas which would cause the
generator rust and corrosion.
①
②
①
②
③
①
②
Do not touch the muffler. Around the exhaust port of the muffler is very hot
while generator is running and the heat will remain for some time after
generator stops. To prevent burn or fire, do not move the generator into the
storage room until it is cooled.
Put the generator on a level surface as tilting may cause fuel or oil leaks.
If the generator has just run over, please do the shipment after cooling one hour
because the exhausting system is still hot which may burn you and fire other
things.
Put the generator on a level surface while shipping to prevent leaking the oil.
-11-

9. Methods of Unexpected Problem
Generator can't start
Check the power
control system
Check fuel and
machine oil
Check cylinder
compression
Check fuel supply
system
No voltage output
Check AC circuit
breaker
Check AVR
Send generator to
repair center
Cause
Bad connections of
current line
Battery power is low
Without fuel
Without oil
Fuel deterioration or
contain deteriorated fuel
Piston ring worn or rings
in wrong place
Valve clearance is not
correct
Bolts of cylinder head
are not tighten
Fuel oil or switch of fuel
oil plugs
Possible cause
AC circuit breaker is
not open
AC circuit breaker
is broken
AVR is broken
Motor failure, circuit
failure
Remedy
Check each connector
1. Charge the battery
2. Change the battery
Add fuel
Add oil
Drain the fuel tank and
add fresh fuel
Change and adjust
piston ring
Adjust the clearance as
per operational manual
Re-tight the bolt
Replace or repair
defective parts
Remedy
Turn the AC circuit
breaker to “ON” position
Replace the AC
circuit breaker
Replace AVR
Replace or repair
defective parts
-12-

10. Electrical Wiring Diagram (Single Phase Generator)
11. Electrical Wiring Diagram (Three Phase Generator)
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