Könner & Söhnen KS 4100iE User manual

Owner’s Manual
KS 4100iE
KS 4100iEG
KS 8100iE
KS 8100iEG
KS 8100iE ATSR
KS 8100iEG ATSR
Inverter Generator
Inverter Generator
in Soundproof Housing
EN
Please, read this manual
carefully before use!
KS 2000i S
KS 2000iG S
KS 4000iE S
KS 4000iEG S
KS 4000iE S ATS
KS 6000iE S
KS 6000iE S ATS

INTRODUCTION
SAFETY INFORMATION 1
Thank you for your purchase of Könner & Söhnen®products. This manual contains a brief description of
safety, use and debugging. More information can be found on the ocial manufacturer’s website in the
support section: konner-sohnen.com/manuals
You can also go to the support section and download the full version of the manual by scanning the QR code,
or on the website of the ocial importer of Könner & Söhnen products: www.konner-sohnen.com
Manufacturer reserves the right to make alterations into the generators, which may not be reected in this
manual. Pictures and photos of the product may vary from its actual appearance. At the end of this manual,
You may nd contact information which you are free to use in case of any issues occurrence.
All data, specied in this operation manual is the most up to date for the moment of its publishing. The cur-
rent list of service centers you can nd at the website of ocial importer: www.konner-sohnen.com
Do not use the generator in rooms with poor ventilation or in conditions of excessive humidity. Do not
place the generator in water or on moist soil. Do not expose the generator to rain, snow, as well as to direct
sunlight for a long time. Place the generator on a at, hard surface, away from ammable liquids/gases (at
a minimum distance of 1 m). Install the generator at a distance of not less than 1 m from the front control
panel and not less than 50 cm on each side, including the upper part of the generator. Keep unauthorized
persons, children, and animals away from work area. Wear safety shoes and gloves.
We care about the environment, therefore, we consider it expedient to saveWe care about the environment, therefore, we consider it expedient to save
paper and leave in print a short description of the most important sections.paper and leave in print a short description of the most important sections.
Be sure to read the full version of the manual before
getting started!
Useful information while operating the machine.
Failure to follow the recommendations marked with this
sign may lead to serious injury or death of the operator
or third parties.
ATTENTION – DANGER!
IMPORTANT!
Pay attention to the number of phases of the genera-
tor and the electrical system. A three-phase generator is
only suitable for three-phase power consumers. Never
connect a three-phase generator to a three-phase home
network if there are no three-phase power consumers
When installing the generator, pay attention to the ca-
pacity of electrical appliances and their starting current,
which may be several times higher than the rated cur-
rent. The generator cannot run in overload conditions
when starting consumers with an inrush current higher
than the generator’s maximum output.
As exhaust gases contain poisonous carbon dioxide (CO2)
and carbon monoxide (CO) gases which are dangerous
for life, it is strictly forbidden to install the generator in
residential buildings, premises connected to residential
buildings by a common ventilation system, other rooms
from which exhaust gases may enter living premises.
ATTENTION – DANGER!
ATTENTION – DANGER!
ATTENTION – DANGER!
konner-sohnen.com |1

ELECTRICAL SAFETY 1.1
The generator produces electricity that may lead to an electric shock while neglecting compliance regu-
lations. Könner & Söhnen generators were initially designed as an IT system with basic protection by in-
sulation of hazardous live parts according to DIN VDE 0100-410. The generator housing is insulated from
the current-carrying L and N conductors. The generator must be grounded in all cases, except for an IT
system with an insulated neutral wire and bonding. A grounded IT system requires the use of an insulation
monitoring device. Further details regarding the use of the generator in IT and TN systems can be found on
our website or requested from our technical support. Wires with damaged or spoiled insulation should be
replaced. You should also replace worn, damaged or rusty contacts.
The generator and power consumers form a closed system, with elements aecting each other. This system
is physically dierent from the public network since it is signicantly aected by factors such as unbalanced
phase load and non-linear current consumption by power consumers that can cause damage to the gener-
ator and power consumers connected to it.
The device generates electricity. Follow safety precautions
to avoid electric shock.
ATTENTION – DANGER!
The generator must not be paralleled with other pow-
er sources. The generator must not be used in parallel
with on-grid inverters, even if allowed in the operating
instructions for the inverter.
ATTENTION – DANGER!
Using device for other purposes deprives the right for
free warranty.
IMPORTANT!
It is forbidden to connect to the generator devices which
can generate current pulses and direct energy towards
the generator (voltage stabilizers, devices with electronic
brakes, on-grid and hybrid inverters, etc.).
IMPORTANT!
The generator should be used as an IT or TN system
based on the application. Earthing and additional pro-
tective measures such as insulation monitoring or pro-
tection against accidental contact (residual current de-
vice) must be provided based on the application and the
system used.
IMPORTANT!
PRECAUTIONS WHEN WORKING WITH
GASOLINE GENERATOR 1.2
Do not start the generator operation upon presence of electric load! Disconnect the load before you stop
the engine. Only unleaded gasoline is recommended for the generator. It is forbidden to use
kerosene or other fuel types. Before running the generator, it is necessary to dene the place and means of
its emergency stop. Do not refuel the running generator.
Fuel contaminates the land and groundwater. Do not
allow the leaking gasoline from the tank!
ATTENTION – DANGER!
Be careful. Do not operate the generator, if you are tired,
under the inuence of drugs or alcohol. Inattention may
cause a serious injury.
ATTENTION – DANGER!
konner-sohnen.com |2

PRECAUTIONS WHEN WORKING WITH HYBRID GENERATOR 1.3
Do not start the generator operation upon presence of electric load! Before usage make sure, that all the
hoses are connected properly. In case of gas leakage, stop the gas ow from the source to generator and
ventilate the room as soon as possible. For stopping gas powered engine: disconnect all the connected de-
vices rst, then close the gas valve, then turn o the engine. After that set the starter switch to OFF position
and turn o the gas supply valve.
Do not allow sparks near gas powered generetor during
its work
ATTENTION - DANGER!
For dual fuel models, only propane-butane mixture for
cars (LPG) can be used as gas! It is forbidden to use any
other gas!
IMPORTANT!
The gas cylinder valve must not be closed when the gen-
erator is not running. The generator must not be operat-
ed on gas in basements.
ATTENTION - DANGER!
Pay attention! Usage of gasoline together with liqueed
gas is forbidden! When you operate using gasoline, you
must stop LPG supply. When you operate generator
using LPG - you must stop gasoline supply.
ATTENTION - DANGER!
MAIN OVERVIEW 2
MODELS KS 4100MODELS KS 4100iiE, KS 8100E, KS 8100iiE, KS 4100E, KS 4100iiEG, KS 8100EG, KS 8100iiEG ATSR, KS 8100EG ATSR, KS 8100iiE ATSR, KS 8100E ATSR, KS 8100iiEGEG
1. Fuel tank cap
2. Fuel level indicator
3. Control panel
4. Carrying handles
5. Manual starter (only for models KS 4100iE, KS 4100iEG)
6. Transport wheels
7. Oil-depth gage
2
3
4
1
6
7
5
2
1
9
10
11
121314
3 4 5 6 78
1. Multifunctional engine switch
2. Oil level indicator
3. Overload indicator
4. Voltage indicator
5. Fuel indicator (for dual-fuel models, except for model KS 2000iG S)
6. Reset button
7. 12V DC fuse
8. Economy mode switch (ЕCОN)
9. LED display
10. Generator parallel socket (except for
KS 8100 model modifications)
11. Earthing bolt
12. 2x16А AC outlets (for KS 8100 model
modifications, sockets 1*16A, 1*32A)
13. 12V/8.3A DC outlet
14. 2 USB-Outputs
15. Models KS 8100iEG ATSR and KS 8100iE ATSR use a control panel with an ATS (Automatic Transfer
Switch) output. konner-sohnen.com |3

Manufacturer reserves the right to make changes and/or
improvements in design, components set and technical
attributes without notice and without incurring obliga-
tion. The pictures in this manual are schematical and may
not match the parameters of original product.
IMPORTANT!
MODELS MODELS KS 2000KS 2000iiS, KS 2000S, KS 2000iiG SG S 1. Fuel tank cap air vent
2. Carrying handles
3. Control panel
4. Manual starter
5. Air choke (for model KS 2000i S)
Fuel switch for model KS 2000iG S
Model KS 2000iG S has an air choke
located on its control panel.
6. Maintenance cover (on the other side of the
generator)
3
4
5
6
12
1. 2 USB-Outputs
2. Economy mode switch (ЕCОN)
3. LED display
4. 12V DC fuse
5. 2x16А AC outlets
6. Earthing bolt
7. Generator parallel socket
8. Reset button
9. 12V/8A DC outlet
3
78 691
542
1. 2 USB-Outputs
2. Economy mode switch (ЕCОN)
3. LED display
4. 1x16А AC outlet
5. Earthing bolt
6. Reset button
7. Generator parallel socket
8. For KS 2000iG S, the control panel has an
air choke and a fuel switch. Use the start button
instead of the multifunction engine switch.
MODELS KS 4000MODELS KS 4000iiE S, KS KS 4000E S, KS KS 4000iiEG SEG S
1. Fuel tank cap
2. Carrying handles
3. Control panel
4. Manual starter
5. Transport wheels
6. Maintenance cover
7. Multifunction engine switch
761
2 3 4
5
konner-sohnen.com |4
54
6
7
3
21

Connect the LPG hose to the LPG input
for models KS 4100iEG, KS 8100iEG ATSR, KS 8100iEG
for model KS 4000iEG Sfor model KS 2000iG S
konner-sohnen.com |5
In addition to the components shown in the gure of a gasoline generator, a
generator with a hybrid system (LPG/ gasoline) is equipped with a hose for
supplying LPG to the generator.
1. Built-in reducer.1. Built-in reducer.
2. Gas cylinder connection hose (1.5 m).2. Gas cylinder connection hose (1.5 m).

konner-sohnen.com |6
SPECIFICATIONS 3
To ensure reliability and increase the engine service life, peak powers may be slightly limited by circuit
breakers.
The optimal operating conditions are ambient temperature of 17-25°C, barometric pressure of 0.1 MPa
(760 mm Hg), and relative humidity of 50-60%. Under these environmental conditions, the generator can
provide maximum performance in terms of the declared specications.
In the event of deviations from these environmental indicators, the generator performance may vary.
Please note that continuous loads exceeding 80% of the generator’s rated power are not recommended in
order to extend its service life.
*LPG operation reduces generator power by 10%.
**Fuel consumption depends on many factors, such as load, fuel quality, season, altitude, technical con-
dition of the generator.
Model KS 2000i S KS 2000iG S
Voltage, V 230
Maximum power, kW 2.0 2.0*
Nominal power, kW 1.8 1.8*
Frequency, Hz 50
Current, A (max.) 8.7 8.7
Outlets 1*16A 1*16A
Engine start manual manual
Fuel tank volume, l 5 5
Working time at 50% load
(gasoline fuel)**, h 6.25 6.25
LED display voltage, frequency, working hours
Noise level Lpa (7m)/Lwa, dB 62/87 62/87
Output 12V, A - -
USB-Outputs 5V/1A, 5V/2.1A -
Engine model KS 100i KS 100i
Engine volume, cm379.7 79.7
Engine type gasoline, 4 stroke cycle engine LPG/gasoline 4 stroke cycle engine
Engine power, hp 2.5 2.5
Generator parallel socket + +
Crankcase volume, l 0,4 0,4
Power factor, cos φ 1 1
ATS input - -
Dimensions (LxWxH), mm 555х335х540 700х335х540
Lithium battery, Ah - -
Net weight, kg 19 19
Protection class IP23M
Nominal voltage tolerance – max. 5%

konner-sohnen.com |7
To ensure reliability and increase the engine service life, peak powers may be slightly limited by circuit
breakers.
The optimal operating conditions are ambient temperature of 17-25°C, barometric pressure of 0.1 MPa
(760 mm Hg), and relative humidity of 50-60%. Under these environmental conditions, the generator can
provide maximum performance in terms of the declared specications.
In the event of deviations from these environmental indicators, the generator performance may vary.
Please note that continuous loads exceeding 80% of the generator’s rated power are not recommended in
order to extend its service life.
*LPG operation reduces generator power by 10%.
**Fuel consumption depends on many factors, such as load, fuel quality, season, altitude, technical con-
dition of the generator.
***Multifunctional LED-display: load, fuel level, voltage, frequency, working hours; overload indicator,
voltage indicator, oil level indicator.
Model KS 4000iE S KS 4000iEG S KS 4000iE S ATS
Voltage, V 230
Maximum power, kW 4.0 4.0* 4.0
Nominal power, kW 3.5 3.5* 3.5
Frequency, Hz 50
Current, A (max.) 17.4 17.4 17.4
Outlets 2*16A 2*16A 2*16A
Engine start manual/electro manual/electro manual/electro
Fuel tank volume, l 12 12 12
Working time at 50% load
(gasoline fuel)**, h 7.8 7.8 7.8
LED display multifunctional*** voltage, frequency, working hours
Noise level Lpa (7m)/Lwa, dB 66/91 66/91 66/91
Output 12V, A 12V/8.3A 12V/8.3A -
USB-Outputs -5V/1A, 5V/2.1A -
Engine model KS 240i KS 240i KS 240i
Engine volume, cm3223 223 223
Engine type gasoline, 4 stroke
cycle engine
LPG/gasoline 4 stroke
cycle engine
gasoline, 4 stroke
cycle engine
Engine power, hp 7.5 7.5 7.5
Generator parallel socket + + -
Crankcase volume, l 0.6 0.6 0.6
Power factor, cos φ 1 1 1
ATS input + - Built-in ATS
Dimensions (LxWxH), mm 630х475х570 775х475х570 630х475х570
Lithium battery, Ah 1.6 1.6 1.6
Net weight, kg 40 40 40
Protection class IP23M
Nominal voltage tolerance – max. 5%

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Model KS 6000iE S KS 6000iE S ATS
Voltage, V 230
Maximum power, kW 5.5 5.5
Nominal power, kW 5.0 5.0
Frequency, Hz 50
Current, A (max.) 23.9 23.9
Outlets 1*16A, 1*32A 1*32A
Engine start manual/electro manual/electro
Fuel tank volume, l 11 11
Working time at 50% load
(gasoline fuel)**, h 7 7
LED display multifunctional*** voltage, frequency, working hours
Noise level Lpa (7m)/Lwa, dB 70/95 70/95
Output 12V, A 12V/8.3A -
USB-Outputs 5V/1A, 5V/2.1A -
Engine model KS 240i KS 240i
Engine volume, cm3223 223
Engine type gasoline, 4 stroke cycle engine gasoline, 4 stroke cycle engine
Engine power, hp 7.5 7.5
Generator parallel socket + -
Crankcase volume, l 0,7 0,7
Power factor, cos φ 1 1
ATS input + вбудована АВР
Dimensions (LxWxH), mm 640х425х600
Lithium battery, Ah 1.6 1.6
Net weight, kg 39.5 40
Protection class IP23M
Nominal voltage tolerance – max. 5%
To ensure reliability and increase the engine service life, peak powers may be slightly limited by circuit
breakers.
The optimal operating conditions are ambient temperature of 17-25°C, barometric pressure of 0.1 MPa
(760 mm Hg), and relative humidity of 50-60%. Under these environmental conditions, the generator can
provide maximum performance in terms of the declared specications.
In the event of deviations from these environmental indicators, the generator performance may vary.
Please note that continuous loads exceeding 80% of the generator’s rated power are not recommended in
order to extend its service life.
*LPG operation reduces generator power by 10%.
**Fuel consumption depends on many factors, such as load, fuel quality, season, altitude, technical con-
dition of the generator.
***Multifunctional LED-display: load, fuel level, voltage, frequency, working hours; overload indicator,
voltage indicator, oil level indicator.

konner-sohnen.com |9
Model KS 4100iE KS 4100iEG
Voltage, V 230
Maximum power, kW 4.0 4.0*
Nominal power, kW 3.6 3.6*
Frequency, Hz 50
Current, A (max.) 17.4 17.4
Outlets 2*16A 2*16A
Engine start manual/electro manual/electro
Fuel tank volume, l 12.5 12.5
Working time at 50% load
(gasoline fuel)**, h 8.1 8.1
LED display voltage, frequency, working hours
Noise level Lpa (7m)/Lwa, dB 70/95 70/95
Output 12V, A - -
USB-Outputs 5V/1A, 5V/2.1A 5V/1A, 5V/2.1A
Engine model KS 240i KS 240i
Engine volume, cm3223 223
Engine type gasoline, 4 stroke cycle engine LPG/gasoline 4 stroke cycle engine
Engine power, hp 7.5 7.5
Generator parallel socket - +
Crankcase volume, l 0,6 0,6
Power factor, cos φ 1 1
ATS input + -
Dimensions (LxWxH), mm 605х420х425 685х420х430
Lithium battery, Ah 1.6 1.6
Net weight, kg 36.7 38
Protection class IP23M
Nominal voltage tolerance – max. 5%
To ensure reliability and increase the engine service life, peak powers may be slightly limited by circuit
breakers.
The optimal operating conditions are ambient temperature of 17-25°C, barometric pressure of 0.1 MPa
(760 mm Hg), and relative humidity of 50-60%. Under these environmental conditions, the generator can
provide maximum performance in terms of the declared specications.
In the event of deviations from these environmental indicators, the generator performance may vary.
Please note that continuous loads exceeding 80% of the generator’s rated power are not recommended in
order to extend its service life.
*LPG operation reduces generator power by 10%.
**Fuel consumption depends on many factors, such as load, fuel quality, season, altitude, technical con-
dition of the generator.

Model KS 8100iE KS 8100iEG KS 8100iE ATSR KS 8100iEG ATSR
Voltage, V 230
Maximum power, kW 8.0 8.0* 8.0* 8.0*
Nominal power, kW 7.2 7.2* 7.2* 7.2*
Frequency, Hz 50
Current, A (max.) 34.8 34.8 34.8 34.8
Outlets 1*16A, 1*32A 1*16A, 1*32A 1*16A, 1*32A 1*16A, 1*32A
Engine start electro electro electro electro
Fuel tank volume, l 20 20 20 20
Working time at 50% load
(gasoline fuel)**, h 7.1 7.1 7.1 7.1
LED display voltage, frequency, working hours
Noise level Lpa (7m)/Lwa, dB 70/95 70/95 70/95 70/95
Output 12V, A 12V/8.3A 12V/8.3A 12V/8.3A -
USB-Outputs 5V/1A
5V/2.1A 5V/1A 5V/2.1A 5V/1A 5V/2.1A 5V/1A 5V/2.1A
Engine model KS 480i KS 480i KS 480i KS 480i
Engine volume, cm3458 458 458 458
Engine type
gasoline, 4
stroke cycle
engine
LPG/gasoline
4 stroke cycle
engine
gasoline, 4 stroke
cycle engine
LPG/gasoline
4 stroke cycle
engine
Engine power, hp 16 16 16 16
Generator parallel socket - - - -
Crankcase volume, l 1,1 1,1 1,1 1,1
Power factor, cos φ 1 1 1 1
ATS input - - + +
Dimensions (LxWxH), mm 725х505х555 765х505х555 725х505х555 765х505х555
Lithium battery, Ah 1.6 1.6 1.6 1.6
Net weight, kg 65.8 68 68 68
Protection class IP23M
Nominal voltage tolerance – max. 5%
konner-sohnen.com |10
To ensure reliability and increase the engine service life, peak powers may be slightly limited by circuit
breakers.
The optimal operating conditions are ambient temperature of 17-25°C, barometric pressure of 0.1 MPa
(760 mm Hg), and relative humidity of 50-60%. Under these environmental conditions, the generator can
provide maximum performance in terms of the declared specications.
In the event of deviations from these environmental indicators, the generator performance may vary.
Please note that continuous loads exceeding 80% of the generator’s rated power are not recommended in
order to extend its service life.
*LPG operation reduces generator power by 10%.
**Fuel consumption depends on many factors, such as load, fuel quality, season, altitude, technical con-
dition of the generator.

The overload indicator may light up within several sec-
onds after start-up or when connecting electrical devices
requiring a high starting current, such as a compressor
or voltage indicator. However, this is not a malfunction.
IMPORTANT!
konner-sohnen.com |11
It is recommended to ground the generator before operating it for the first time. Before starting the device,
remember that the total power of the connected power consumers should not exceed the nominal power
of the generator.
TERMS OF USE OF INVERTER GENERATOR 4
Könner & Söhnen generators were initially designed
as an IT system with basic protection by insulation of
hazardous live parts according to DIN VDE 0100-410. The
generator housing is insulated from the current-carrying
L and N conductors. The generator must be grounded
in all cases, except for an IT system with an insulated
neutral wire and bonding. A grounded IT system requires
the use of an insulation monitoring device.
IMPORTANT!
Make sure that the control panel, the blinds and the
underside of the inverter are well cooled and protected
against the ingress of small solids, dirt, and water. Im-
proper operation of the cooler can cause damage to the
motor, inverter or alternator.
IMPORTANT!
GENERATOR OPERATION 5
DC FUSEDC FUSE
The DC protector automatically switches to “OFF” when the current of the operating electrical device is
higher than the rated current. To use this equipment again, turn on the DC fuse again by pressing the “ON”
button.
OIL LEVEL INDICATOROIL LEVEL INDICATOR
When the oil level falls below the level required for operation, the oil level indicator lights up, and then the
engine stops automatically. The engine will not start until oil is added.
AC INDICATORAC INDICATOR
When the generator is running and producing electricity, the AC indicator light is on.
If the DC fuse turns off, reduce the load of the connected
electrical device. If the DC protector turns off again, stop
operation and contact your nearest Könner & Söhnen
service center.
IMPORTANT!
OVERLOAD INDICATOROVERLOAD INDICATOR
The overload indicator lights up when the connected generator is overloaded, the inverter control unit
overheats or the AC output voltage rises.
If the overload indicator goes on, the engine will continue to operate, but the generator will no longer
produce electricity. In this case, you must perform the following steps:
1. Turn off all connected electrical appliances and stop the engine.
2. Reduce the total power of the connected devices until the nominal power of the generator is reached.
3. Check if the vent grid is clogged. Remove excess dirt or debris, if any.
4. After checking, start the engine.

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FUEL TANK CAP AIR VENT (FOR MODEL KS 2000FUEL TANK CAP AIR VENT (FOR MODEL KS 2000iiS)S)
The fuel cap is equipped with a vent for air supply to the fuel tank. When the engine is running, the vent
must be in the “ON” position (OPEN). This will allow fuel to enter the carburetor for engine operation. After
the generator stops, allow it to cool down and close the air vent on the fuel cap. When the generator is not
in use, close the vent to the “OFF” position.
EARTHING BOLTEARTHING BOLT
In all cases, except for an IT system with an insulated neutral wire and bonding, the generator earthing bolt
must be connected to the grounding circuit with a flexible copper conductor with a cross-sectional area of
at least 6 mm2.
CHECKING THE FUEL LEVELCHECKING THE FUEL LEVEL
1. Unscrew the fuel cap and check the fuel level in the tank.
2. Fill the fuel tank to the fuel filter level.
3. Tighten the fuel cap securely.
4. For silent models of inverter generator, open the air intake vent on the fuel cap.
Recommended fuel:Recommended fuel: unleaded fuel.
Fuel tank volume:Fuel tank volume: see specifications table.
CHECK BEFORE GETTING STARTED 6
Wipe up spilled fuel immediately with a clean, dry, soft
cloth, as the fuel may harm painted surfaces or plastic
parts.
IMPORTANT!
Use only unleaded gasoline. Using leaded gasoline can
cause serious damage to the inside of the engine.
IMPORTANT!
CHECKING THE OIL LEVELCHECKING THE OIL LEVEL
The generator is transported free of motor oil. Do not start the engine until it is filled with sufficient amount
of motor oil.
1. Unscrew the oil dipstick and wipe it out with a clean cloth.
2. Insert the dipstick without screwing it in.
3. Check the oil level by a mark on the oil dipstick.
4. Add oil if its level is below the mark on the oil dipstick.
5. Screw on the dipstick.
Recommended motor oil:Recommended motor oil: SAE 10W30, SAE 10W40.
Recommended motor oil grade:Recommended motor oil grade: API Service SG type or higher.
Motor oil quantity: Motor oil quantity: see specifications table.
FILL TO HEREFILL TO HERE
Before starting the engine,Before starting the engine, make sure that the rated power of power consumers matches with the power
of generator. Do not exceed the nominal power of the generator. Do not connect any devices before youDo not connect any devices before you
start the engine!start the engine!
GETTING STARTED 7
Do not change the controller settings in terms of the
amount of fuel or speed governor (this adjustment
was made at the factory). Otherwise, this may result in
changes in the engine operation or its failure.
IMPORTANT!

COMMISSIONINGCOMMISSIONING
1. Fill the crankcase with engine oil. The recommended amount of oil for each model is indicated in the
specification chart.
2. Check oil level with an oil dipstick. It should be between the MIN and MAX marks on the oil dipstick.
3. Check fuel level.
4. Check the air filter for correct installation.
IN THE FIRST 20 OPERATING HOURS OF THE GENERATOR, THE FOLLOWING REQUIREMENTS SHOULD IN THE FIRST 20 OPERATING HOURS OF THE GENERATOR, THE FOLLOWING REQUIREMENTS SHOULD
BE MET:BE MET:
1. During commissioning, do not connect power consumers, the power of which exceeds 50% of the
nominal (operating) power of the device.
2. After the first 20 operating hours, be sure to change the oil. It is better to drain oil while the engine is still
hot after operation to ensure quick and complete oil draining.
3. Check and clean the air filter, fuel filter and spark plug.
This material is for informational purposes only and does not constitute a manual for
installing the equipment or connecting it to the mains, but we strongly recommend
that you read the instructions below. Equipment connection must always be carried out
by a certied electrician responsible for the installation and electrical connection of the
equipment according to local laws and regulations. The manufacturer assumes no lia-
bility for improper connection of the equipment or for any material or physical damage
that may result from improper installation, connection or operation of the equipment.
Before starting the generator, connect the ground wire to
the ground terminal.
IMPORTANT!
The generator is shipped with terminals disconnected to prevent battery self-discharge during storage. To
connect the battery terminals of the KS 4000iE S generator, proceed as follows:
1. Open the service cover. 2. Connect the terminals ensuring the correct
polarity (“+” to “+”, “-” to “-”).
1122
ENGINE STARTENGINE START
Useful tip: If the engine stalls or does not start, turn
the engine switch to the “ON” position, and then pull
the manual starter. If the oil level indicator flickers for
several seconds, add oil and restart the engine.
IMPORTANT!
konner-sohnen.com |13
In the power supply mode, the generator should operate
no longer than 1 minute in the range from nominal to
maximum power.
Standby generators should not run continuously (e.g. by
adding fuel to the tank or connecting a large fuel tank) or
longer than recommended: 4-6 hours for LPG/gasoline or
gasoline generators (depending on load).
ATTENTION – DANGER!
ATTENTION – DANGER!

Fig. 3
1. Check oil level.
2. The inverter generators KS 4100iEG, KS 8100iEG ATSR,
KS 8100iEG, KS 4000iEG Suse smart fuel switching system.
In order to use LPG as fuel you need to connect a hose to
the corresponding connector and open the valve on the
gas cylinder. The solenoid valve will automatically shut o
the gasoline supply from the gasoline tank.
3. Connect the LPG hose to the LPG input (connect hose end Ato the LPG input, as shown in Fig. 4.).
RUNNING GENERATOR ON LPG (KS 4100iEG, KS 8100iEG ATSR, RUNNING GENERATOR ON LPG (KS 4100iEG, KS 8100iEG ATSR, KS 8100iEG,KS 8100iEG, KS 2000iG S,KS 2000iG S,
KS 4000iEG S)KS 4000iEG S)
A B
Fig. 4
1. Check oil level.
2. Check fuel level.
3. Turn the Multifunctional engine switch to the “START” position.
4. Open the vent on the fuel cap to the “ON” position (for model
KS 6000iE S, KS 6000iE S ATS, KS 4000iE S).
5.1 For manual start (models KS 4100iE, KS 4000iE S, KS 6000iE S,
KS 6000iE S ATS), pull the manual starter until a slight resistance
is felt, then pull it toward you relatively sharply. Slowly turn the
manual starter by hand, do not release it abruptly.
5.2 For electric start, press the red button on the multifunctional
engine switch (fig. 1)
6. After starting the engine, turn the Multifunctional engine switch
to the “RUN” position (fig. 1).
FOR MODELS KS 4100FOR MODELS KS 4100iiE, KS 8100E, KS 8100iiE, KS 4000E, KS 4000iiE S, KS 6000E S, KS 6000iiE S, KS 8100E S, KS 8100iiE ATSR, KS 6000E ATSR, KS 6000iiE S,E S,
KS 6000KS 6000iiE S ATSE S ATS
Fig. 1
Fig. 2
Each time you start the generator, be sure to check oil and
fuel level
IMPORTANT!
FOR MODEL KS 2000FOR MODEL KS 2000iiSS
1. Check oil level.
2. Check fuel level.
3. Open the vent on the fuel cap to the “ON” position (fig. 2).
4. Turn the air choke control knob to the “START” position (fig. 3).
5. Pull the manual starter until a slight resistance is felt, then pull
it toward you relatively sharply. Slowly turn the manual starter by
hand, do not release it abruptly.
6. Turn the air choke control knob to the “RUN” position.
Useful tip: to ensure long-term operation of the generator
engine, it is important to observe the following tips:
- Before connecting the load, allow the engine to run for
1-2 minutes to warm it up.
- When disconnecting the load after lengthy operation, do
not turn off the generator. Allow the generator to run
idle for 1-2 minutes so that it cools down.
IMPORTANT!
Do not connect two or more devices at a time. The start-up
of many devices requires high power. Devices should be
connected one at a time according to their power rating.
Do not connect any power consumers within the first
2 minutes after the generator has been started.
ATTENTION – DANGER!
konner-sohnen.com |14

Fig. 5
TO START LPG/GASOLINE GENERATOR IN GASOLINE MODETO START LPG/GASOLINE GENERATOR IN GASOLINE MODE
(KS 4100(KS 4100iiEG, KS 8100EG, KS 8100iiEG ATSR, KS 2000EG ATSR, KS 2000iiG S, KS 4000G S, KS 4000iiEG S, KS 8100EG S, KS 8100iiEG)EG)
1. Close the gas valve on the cylinder.
2. Open the vent on the fuel cap to the “ON”
3. Set the fuel switch to “ON” and close the air choke on the control panel (for model KS 2000iG S).
4. Start the engine by hand or electric start.
5. Open the air choke (for model KS 2000iG S).
For all modifications of models KS 2000i, loosen the 4
screws on the side panel. Loosen drain screw Con the
carburetor and let the remaining fuel drain through pipe
Dinto the dedicated drip pan. Avoid gasoline leaks.
Tighten up the screw. Install back the generator housing
cover. Start the generator on LPG.
To drain gasoline from the carburetor, turn off the fuel valve and wait until the generator has cooled down
sufficiently. For open frame models, place a drip pan under the carburetor and loosen the drain screw on
the carburetor (Fig. 5). Make sure that no fuel leaks onto the generator. Tighten up the screw again. Start
the generator on LPG according to the instructions mentioned above
Disconnect the load from the generator before changing
fuel. The ECONOMY MODE switch must be in the “OFF”
position.
IMPORTANT!
For model KS 2000iG S: It is recommended to stop the generator before switching from
gasoline to LPG! Gasoline remains in the carburetor make it difficult to start the engine
on LPG. Let the generator run out of gasoline until it stops. To do this, close the fuel valve
with the generator running and wait until the generator stops completely. Then start the
generator on LPG. You can also drain the remaining gasoline from the carburetor before
starting the generator on LPG.
RUNNING GENERATOR ON LPG (KS 4100iEG, KS 8100iEG ATSR, RUNNING GENERATOR ON LPG (KS 4100iEG, KS 8100iEG ATSR, KS 8100iEG,KS 8100iEG, KS 2000iG S,KS 2000iG S,
KS 4000iEG S)KS 4000iEG S)
С
KS 2000iG S
D
4. Connect the hose end with the reducer to the gas cylinder (connect hose end Bto the gas cylinder, as
shown in Fig. 4).
5. Open the gas valve on the cylinder, making sure that no gas is leaking.
6. Press the pressure relief valve on the reducer 2-3 times (see Fig. 4).
7. Turn the Multifunctional engine switch to the “START” position.
8. For manual start, pull the manual starter until a slight resistance is felt, then pull it toward you relatively
sharply. Slowly turn the manual starter by hand, do not release it abruptly. For electric start, press the red
button on the multifunctional engine switch (fig. 1)
9. After starting the engine, turn the Multifunctional engine switch to the “RUN” position (fig. 1).
10. When using for the rst time, ll the gas line with gas by turning the key (pressing start button) to the
“OFF” position and slowly pull the starter handle to the full cord length 2 to 3 times (except for models
KS 8100, which do not have a manual start).
For model KS 2000iG S: Close the air choke (pull the air choke handle) if the generator is not warmed
up. Set the GASOLINE FUEL SWITCH to the “OFF” position, set the engine start to the “ON” position, grasp
the starter handle and slowly pull it until resistance is felt. Pull the starter cord to the full length with a sharp
movement. The generator will start. If this is not the case, repeat this action. Slowly turn the manual starter
by hand, do not release it abruptly. Open the air choke by pushing the air choke handle.
Place the container with gas only vertically, according to
the instruction manual for gas cylinders. The horizontal
placement of gas cylinders leads to hybrid generator
gearbox failure.
IMPORTANT!
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ECON FUNCTIONECON FUNCTION
1. Start the engine.
2. Set the ECON switch to “ON”.
3. Plug the device into an AC outlet.
4. Make sure the AC indicator light is on.
5. Turn on the electrical device.
FUNCTIONAL DESCRIPTION
OF INVERTER GENERATORS 9
For models with electric start, check if the battery is charged. If necessary, recharge the battery with a
dedicated charger for lithium-ion batteries or start the generator with a manual start and allow it to run
idle while it is recharging.
If during usage of gasoline, need to switch to LPG supply, directly connect the LPG pipe,
turn on the LPG supply, and press the LPG RESET on the control panel to switch to LPG.
If during usage of LPG, need to switch to gasoline, you only need to disconnect the
LPG supply, generator will automatically switch to gasoline оperation, without other
operations
CONNECTION OF GENERATOR WITH BUILT-IN ATS 8
Connection diagrams for generators with built-in ATS can be found in the full electronic version of theConnection diagrams for generators with built-in ATS can be found in the full electronic version of the
manual.manual.
Risk of electric shock! Network connection should only be
carried out by a qualied technician.
ATTENTION - DANGER!
It is forbidden to start the generator with the ECONOMY MODE ON. Economy mode
should be turned on only after starting the generator and only with a low load. Failure
to comply with this requirement may result in generator failure and void warranty
repair.
Fuel can be changed without stopping the generator. When switching from gasoline to LPG operation, the
generator may be unstable during the rst 2-3 minutes and the low voltage protection may trip. If the red
indicator (overload indicator) lights up in 2-3 minutes after running the generator on LPG when it is running
stable, press the AC Reset BUTTON on a panel of generator to restore voltage supply
The ECON switch must be set to “OFF” to increase engine
speed to nominal. When connecting multiple power
consumers to the generator, be sure to first connect the
one with the highest starting current, and the device
with the lowest starting current should be connected
last.
IMPORTANT!
“ON” MODE“ON” MODE
When the ECON switch is in the “ON” position, the control unit monitors the engine speed, reducing it
commensurate with the connected load. If the engine speed is not enough to generate electricity to provide
the load, the control unit will automatically increase the engine speed.
As a result, fuel consumption is optimized and noise levels are reduced.
“OFF” MODE“OFF” MODE
The ECON switch must be set back to “OFF” when using electrical devices requiring a high starting current,
such as a compressor or submersible pump.
The ECON switch must be set back to “OFF” when using
electrical devices requiring a high starting current, such
as a compressor or submersible pump.
IMPORTANT!
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PARALLEL FUNCTIONPARALLEL FUNCTION
The total output power of the generators can be increased by connecting two inverter generators together
using the Parallel Unit KS PU1 from Könner & Söhnen. Parallel connection of two generators ensures total
rated output power of these generators. When the generators are connected in parallel, the power loss is
0.2 kW of the total rated power that can be obtained (suitable for all models of inverter generators from
Könner & Söhnen, except for KS 8100iE, KS 8100iEG, KS 8100iE ATSR, KS 8100iEG ATSR).
TO STOP THE ENGINE, PROCEED AS FOLLOWS (EXCEPT MODELS KS 2000I S, KS 2000IG S):TO STOP THE ENGINE, PROCEED AS FOLLOWS (EXCEPT MODELS KS 2000I S, KS 2000IG S):
1. Turn off all devices.
2. Allow the generator to run idle for approx. 1-2 minutes.
3. Turn the Multifunctional engine switch to the “OFF” position (Fig. 7).
4. Close the gas valve
5. Unplug the devices.
6. After the generator stops, allow it to cool down and close the air vent on the fuel cap (set to OFF, as
shown in Fig. 6, when switching off gasoline operation).
DISCONNECT ALL DEVICES BEFORE STOPPING THE GENERATOR!DISCONNECT ALL DEVICES BEFORE STOPPING THE GENERATOR!
Do not stop the generator with the devices turned on. This may disable the generator or devices connected
to it!
Fig. 8
Fig. 7
Fig. 6
CHARGING AN EXTERNAL 12 V BATTERYCHARGING AN EXTERNAL 12 V BATTERY
1. Start the engine.
2. Connect the red wire to the positive (+) terminal of the battery.
3. Connect the black wire to the negative (-) terminal of the battery.
4. Connect the wire to a 12V/8A DC socket on the control panel of the
generator.
5. To start charging the battery, set ECON to “OFF”.
6. Turn the 12 V DC fuse to the “ON” position.
MODELS KS 2000MODELS KS 2000iiS, KS 2000S, KS 2000iiG SG S
1. Turn off all devices.
2. Allow the generator to run idle for approx. 1-2 minutes.
3. Set the engine switch to the “OFF” position.
4. Turn the air choke control knob to the “OFF” position (Fig. 8), for
dual fuel models - move the fuel switch to the OFF position/ close LPG
supply valve.
5. Allow the generator to cool down.
6. Unplug the devices.
7. After the generator stops, allow it to cool down and close the air vent
on the fuel cap (set to OFF, as shown in Fig. 6, for models KS 2000i S,
KS 2000iG S - when switching off gasoline operation).
Inverter generators from Könner & Söhnen are equipped
with lithium batteries with an operating voltage similar
to conventional lead-acid batteries. When the generator
is running, the battery is charged automatically. If it is
necessary to charge the battery with an external device,
we recommend using the KS B1A charger or the charger
for charging lead-acid motorcycle batteries with a nomi-
nal voltage of 12V with a charge current of not more than
2A.
IMPORTANT!
konner-sohnen.com |17

MAINTENANCE 10
This manual compliance! You can find a list of service center addresses on the website of exclusive importer:
www.konner-sohnen.com
IMPORTANT!
- Make sure the ECON mode is off while the battery is being charged.
- Be sure to connect the charger’s red wire to the plus (+) terminal of the battery and the
black wire to the minus (-) terminal of the battery. Do not swap the terminals.
- Connect the charger to the battery terminals securely so that they are not disconnected due
to motor vibrations or other actions.
- The 12 V socket can only be used as a backup source for recharging batteries and shall not
be deemed as a full-featured battery charger.
- The DC protector turns off automatically if the current is higher than the rated current
while the battery is being charged. To restore battery charging, turn on the DC fuse by
pressing the “ON” button.
Never smoke or interrupt battery connections to the
generator while the battery is being charged.
ATTENTION – DANGER!
- If the generator often operates at high temperature or high load, the oil should be replaced every
25 operating hours.
- If the engine often runs in dusty or other harsh conditions, clean the air filter every 10 operating hours.
- If you missed the maintenance time, perform it as soon as possible to save the generator engine.
TECHNICAL MAINTENANCE WORKS
Unit
Action
At each start
First month
or 20 operating
hours
Every 3 months or
50 operating hours
Every 6 months or
100 operating hours
Every year
or 300 operating
hours
Motor oil
Level check
Replacement
Air lter
Check /Cleaning
Replacement
Spark plug
Cleaning
Replacement
Fuel tank
Level check
Cleaning
Fuel lter Check (clean out)
The manufacturer shall not be liable for any damage
caused by failure to perform maintenance work.
IMPORTANT!
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Unit
Action
At each start
First month
or 20 operating
hours
Every 3 months or
50 operating hours
Every 6 months or
100 operating hours
Every year
or 300 operating
hours
Motor oil
Level check
Replacement
Air lter
Check /Cleaning
Replacement
Spark plug
Cleaning
Replacement
Fuel tank
Level check
Cleaning
Fuel lter Check (clean out)
RECOMMENDED OILS 11
Upon oil level decrease it is necessary to add the required quantity in order to provide the correct generator
operation. It is necessary to check the oil levels according to technical maintanance schedule. Further details
can be found in the full version of the manual on our website.
Use oils designed for four-stroke cycle vehicle engines
SAE10W-30, SAE10W-40. Motor oils with other viscosity
levels, may be used only if the average air temperature
in your region does not exceed the limits of the
temperature range, specified in the table.
000CC
10W-30, 10W-40
4040303020201010-10-10-20-20
AIR FILTER TECHNICAL MAINTENANCE 12
Air filter cleaning is to be performed each 50 hours of the generator operation (every 10 hours in unusually
dusty conditions).
CLEANING THE FILTER:CLEANING THE FILTER:
1. Open the clips on the upper cap of the air lter.
2. Remove the sponge ltering element.
3. Remove all dirt deposits inside the hollow case of the air lter.
4. Thoroughly wash the ltering element in warmsoapy water.
5. Dry the sponge lter.
6. Dry ltering element is to be moistened by motor oil and excess oil is to be squeezed out.
SPARK PLUGS TECHNICAL MAINTENANCE 13
Spark plug has to be intact, without soot deposits and to have a correct gap.
SPARK PLUG VERIFICATION:SPARK PLUG VERIFICATION:
1. Remove the cap from the spark plug.
2. Remove the spark plug by means of a corresponding spanner.
3. Examine the spark plug. If is is shattered – it is necessary to replace it.
Recommended replacement spark plugs – F7TC.
4. Measure the gap. It has to be within range 0.7-0.8 mm.
5. In case of repeated use, the spark plug has to be cleaned by means of a metal brush.
After that – set the correct gap.
DAMPER AND FLAME ARRESTER
MAINTENANCE 14
The engine and damper will get very hot after the generator has been started. Do not touch the engine or
damper with any part of your body or clothing during inspection or repair until they have cooled down.
Remove the screws and then pull the protective cover towards you. Loosen the bolts and remove the cover,
screen and ame arrester of the damper. Descale the screen and ame arrester of the damper with a wire
brush.Inspect the screen and ame arrester of the damper. Replace them if they are damaged. Replace
the ame arrester. Replace the screen and cover of the damper. Replace the cover and tighten the screws.
Match the protrusion of the flame arrester to the hole
in the pipe damper.
IMPORTANT!
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