Könner & Söhnen KS 48V-DC User manual

Owner’s Manual
KS 48V-DC
Direct current generator
EN
Please, read this manual
carefully before use!

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!
Failure to follow the recommendations marked with this
sign may lead to serious injury or death of the operator
or third parties.
Useful information while operating the machine.
ATTENTION – DANGER!
IMPORTANT!
ELECTRICAL SAFETY 1.1
The generator outputs a DC voltage below 60 V and re-
quires no contact protection.
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.
Using device for other purposes deprives the right for
free warranty.
ATTENTION – DANGER!
ATTENTION – DANGER!
IMPORTANT!
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 |1

SAFETY PRECAUTIONS FOR OPERATING
THE DIRECT CURRENT GENERATOR 1.2
The generator is only suitable for charging batteries whose voltage range (48-54 V) matches that of the
generator. The charging cables must be securely connected and have sucient cross-section to withstand
charging currents up to 70-75 A. Make sure the generator is o before refueling. Only use unleaded
automobile gasoline with an octane rating of 90 or higher!
Fuel contaminates the land and groundwater. Do not
allow the leaking gasoline from the tank!
ATTENTION – DANGER!
MAIN OVERVIEW 2
It is STRICTLY FORBIDDEN TO CONNECT to DRY contact
(CONTROL TERMINAL) WIRES UNDER VOLTAGE. It may
cause the generator to fail
IMPORTANT!
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!
1. Fuel tank cap
2. Fuel level indicator
3. Control panel
4. Carrying handles
5. Transport wheels
6. Oil-depth gage
1. Operating indicator
2. Overload indicator
3. Low oil level indicator
4. Voltmeter
5. Amperemeter
6. The terminal for connecting
the negative wire of the battery
7. The terminal for connecting
the positive wire of the battery
8. Terminals for connecting
the control device
9. Switch mode of the generator
10. Multifunctional engine switch
10 7 89
1 2 3 4 5
6
2
3
4
5
6
1
konner-sohnen.com |2

Model KS 48V-DC
Voltage, V 48-54
Nominal power, kW 3.6
Current, A 70
Start auto, manual/external
Fuel tank volume, l 12.5
Working time at 50% load (gasoline fuel)*, h 7
LED display voltage, amperage
Noise level Lpa (7m)/Lwa, dB 70/95
Engine model KS 240
Engine volume, cm3223
Engine type gasoline, 4 stroke cycle engine
Engine power, hp 7.5
Crankcase volume, l 0.6
Dimensions (LxWxH), mm 695x445x445
Net weight, kg 36.5
Protection class IP23M
*Fuel consumption depends on many factors, such as load, fuel quality, season, altitude, technical condi-
tion of the generator.
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.
Before starting the generator, connect the battery pack to be charged. The charging cable that connects the
generator to the battery pack must be secured with an 80-100 A fuse. The generator voltmeter shows the
voltage of the connected battery, and the green LED (power indicator) starts ashing. The generator has no
integrated battery and is activated by the battery pack to be charged. The generator can also be started with
the manual starter when the connected battery is low.
A multi-function rotary selector combines a fuel valve, a generator switch and a start button.
The generator is specially designed for charging batteries and acts as a battery charger with a charging
characteristic IU0. The battery is rst charged with a constant current of 70-75 A until the generator output
voltage reaches 53.5-54 V. After that, the generator runs with a DC output voltage. If the initial charging
current is below 70 A, the output voltage will be 53.5-54 V straight away.
GENERATOR OPERATION 4
Ensure that the control panel, protective grid, and under-
side of the generator are well ventilated and free from
solid debris, dirt, and water. Insucient air circulation
can cause excessive heat buildup and damage the gen-
erator.
IMPORTANT!
1. Fuel tank cap
2. Fuel level indicator
3. Control panel
4. Carrying handles
5. Transport wheels
6. Oil-depth gage
konner-sohnen.com |3
SPECIFICATIONS 3

The overload indicator may light up within several sec-
onds after start-up. However, this is not a malfunction.
IMPORTANT!
CHECKING THE FUEL LEVELCHECKING THE FUEL LEVEL
The fuel tank has a fuel level gauge featuring a oat, which shows only an approximate fuel level. You
can only determine the exact fuel level by removing the tank cap. Only use unleaded automobile
gasoline with an octane rating of 90 or higher!
Fuel tank capacity:Fuel tank capacity: approx. 12.5 l
BEFORE FIRST START 5
Wipe up spilled fuel immediately with a clean, dry, soft
cloth, as the fuel may harm painted surfaces or plastic
parts.
IMPORTANT!
CHECKING THE OIL LEVELCHECKING THE OIL LEVEL
The generator is shipped without engine oil. Always fill up the engine with engine oil before you start it.
1. Unscrew and remove the oil dipstick and wipe it with a clean, lint-free cloth.
2. Insert the dipstick without screwing it in.
3. Pull the dipstick out again and check the oil level by the marks on it.
4. If the oil level is low, refill the engine oil.
5. Finally, screw the dipstick back in.
Recommended engine oil:Recommended engine oil: SAE 10W-30, SAE 10W-40.
Engine oil capacity:Engine oil capacity: 0.6 l.
FILL TO HEREFILL TO HERE
Use only unleaded gasoline. Using leaded gasoline can
cause serious damage to the inside of the engine.
IMPORTANT!
GETTING STARTED 6
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!
POWER LED (GREEN)POWER LED (GREEN)
The LED flashes (current consumption below 20 A) or is continuously lit (current consumption above 20 A)
as long as the generator output voltage is applied to the DC output terminals.
OVERLOAD LED (RED)OVERLOAD LED (RED)
The overload LED lights up when the current consumption reaches the maximum or in case of a malfunction.
The red LED is continuously lit when the battery is charging at maximum amperage.
LOW OIL LEVEL LED (YELLOW)LOW OIL LEVEL LED (YELLOW)
When the oil level is below the lower acceptable limit, the low oil level LED lights up, and the engine stops.
Insufficient oil level causes the ignition to turn off.
konner-sohnen.com |4

Periodically check the connections at the connection po-
ints, tighten the terminals if necessary. It is forbidden to
use a cable without a fuse or if the fuse is blown
The generator can only be used to charge the battery. It
is forbidden to use the generator for direct connection to
voltage consumers.
IMPORTANT!
IMPORTANT!
All connecting the generator to the network must be
made by certied electrician in accordance with all elect-
rical rules and regulations.
WARNING!
COMMISSIONINGCOMMISSIONING
1. Fill the crankcase with engine oil. The recommended amount of oil for each model is indicated in the
specication 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 lter for correct installation
5.To connect the generator, use the original wires that come in a kit together with the generator.
6. The wires should rst be attached to the terminals on the generator panel and then to the battery.
7. When connecting the wires, tighten the terminals well - both on the generator panel and on the side
consumer.
8. Be sure to observe the polarity when connecting.
“+” - (red)
“-” - (black)
In AUTO mode, the generator monitors the battery voltage and is activated automatically when the battery
voltage drops to 47.5-48 V. The response time is approx. 5 seconds.
The generator charges the battery with a voltage up to 53.5-54 V and a current up to 70-75 A and shuts
down as soon as the battery voltage reaches 53.5-54 V and the charging current drops below 20 A. The
response time is approx. 30 seconds.
The generator can be started manually by pressing the START button at any time, regardless of the battery
voltage, but it will shut down within 30 seconds after the current consumption drops below 20 A.
The green LED (power indicator) is continuously lit when the current consumption exceeds 20 A and ashes
when the current consumption drops below 20 A.
Where the power consumption should never drop below 20 A (48 V busbar) for technical reasons, EXTER-
NAL CONTROL mode should be used so that the generator does not run continuously.
RUNNING THE GENERATOR IN AUTOMATIC MODE 7
If there is no fuel in the tank the generator will do 5 at-
tempts to start the generator, then go to error mode. To
unlock, you need to update the switch to the OFF posi-
tion, refuel, and follow the instructions to switch to the
desired mode.
NOTE
konner-sohnen.com |5

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
Spark plug Cleaning
Fuel tank
Level check
Cleaning
Fuel lter Check (clean out)
It is STRICTLY FORBIDDEN TO CONNECT to DRY contact
(CONTROL TERMINAL) WIRES UNDER VOLTAGE. It may
cause the generator to fail.
MANUAL / EXTERNAL CONTROL mode is recommended
for users with good experience with equipment.
IMPORTANT!
IMPORTANT!
SHUTTING DOWN THE GENERATOR 9
TO STOP THE ENGINE, PROCEED AS FOLLOWS:TO STOP THE ENGINE, PROCEED AS FOLLOWS:
1. To stop the generator in any mode move the switch wheel to the
OFF position.
MAINTENANCE 10
This manual compliance! You can find a list of service center addresses on the website of exclusive importer:
www.konner-sohnen.com
The EXTERNAL CONTROL mode is enabled by closing the CONTROL TERMINAL contacts and disabled
by opening them. This mode enables optimal generator integration into various power supply systems
through external control of devices using “dry” contacts, thus considerably expanding its range of applica-
tions. With a jumper tted between the CONTROL TERMINAL contacts, the generator will kick in as soon
as the multi-function rotary selector is set to “ON” and will shut down as soon as it is set to “OFF”. This
application is advisable where the generator needs to be turned on and o manually, regardless of the
connected battery voltage.
Multiple devices are equipped with potential-free “dry” contacts (inverters, uninterruptible power sup-
plies, BMS batteries, battery voltage monitors, time relays, etc.), enabling various generator applications.
EXTERNAL CONTROL MODE 8
konner-sohnen.com |6

- 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.
RECOMMENDED OILS 11
The manufacturer shall not be liable for any damage
caused by failure to perform maintenance work.
IMPORTANT!
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.
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.
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.
konner-sohnen.com |7

TROUBLESHOOTING 18
Typical failures Possible reason Solution
Engine will not start
Rotary selector switch is in the “OFF”
position Set the rotary selector to “ON”
No fuel in tank Fill the tank with unleaded automobile
gasoline with an octane rating of 90-95
Fuel is old and has lost its properties Change fuel
Soiled carburetor Clean the carburetor and drain the sludge
Insucient engine oil level Top up engine oil to required level
Spark plug defective Replace the spark plug
Decreased engine power/
troubled engine start
Soiled carburetor Clean the carburetor and drain the sludge
Soiled air lter Clean the air lter or replace it
Spark plug defective Replace the spark plug
Incorrect spark plug electrode spacing Set correct electrode spacing
Engine overheated Cooling ns are dirty Clean the cooling ns
Air lter is dirty Clean the air lter
Generator shuts o and
error indicator is on
Potential battery problem
(it must be charged)
Check battery parameters and remedy
problems
FUEL FILTER 15
1. Remove the fuel tank cap and fuel lter.
2. Clean the lter with gasoline.
3. Wipe the lter and replace it.
4. Replace the fuel tank cap.
Make sure that the fuel tank cap is tight.
Never use gasoline while smoking or in the immediate
vicinity of an open flame.
IMPORTANT!
To drain gasoline from the carburetor, turn off the fuel
valve and wait until the generator has cooled down
sufficiently. Place a drip pan under the carburetor
and loosen the drain screw on the carburetor (see
fig.). Make sure that no fuel leaks onto the generator.
Tighten up the screw again.
STORAGE 16
Storage room has to be dry and free from dust deposits. Storage room also has to be locked away from
children and animals. It is recommended to store and use the generator at temperature of -20°С to +40°С.
Avoid direct sunlight, rain on the generator. Information on long-term storage and transportation can be
found in the full version of the manual.
GENERATOR DISPOSAL 17
To prevent environment damage generator should be separated from ordinary waste. Please recycle them
in the safest way, passing it to special place for disposal.
Match the protrusion of the ame arrester to the hole in
the pipe damper.
IMPORTANT!
konner-sohnen.com |8

WARRANTY SERVICE TERMS 19
The international manufacturer warranty is 1 year. The warranty period starts from the date of purchase.
In cases when warranty period is longer than 1 year according to local legislation please contact your local
dealer. The Seller which sells the product is responsible for granting the warranty. Please contact the Seller
for warranty. Within the warranty period, if the product fails because of defects in the production process,
it will be exchanged on the same product or repaired.
All faults caused by the manufacturer during the warranty period will be eliminated free of charge. Warran-
ty repair is carried out only if you have a fully completed warranty card, the Buyer’s signature of acceptance
of the warranty terms, as well as a document supporting the purchase (cash receipt, sales slip or invoice). In
the absence thereof, as well as in the event of errors or corrections not authenticated by the seller’s seal or
illegible inscriptions in the warranty card or tear-o coupon, no warranty repair is carried out, no objections
to quality are accepted and the warranty card is withdrawn by the service center as invalid. The device is
accepted for repair clean and full.
konner-sohnen.com |9

CONTACTS
Deutschland:Deutschland:
DIMAX International GmbH
Flinger Broich 203 -FortunaPark-
40235 Düsseldorf, Deutschland
www.koenner-soehnen.com
Ihre BestellungenIhre Bestellungen
[email protected]
Kundendienst, technische FragenKundendienst, technische Fragen
und Unterstützungund Unterstützung
[email protected]
Garantie, Reparatur und ServiceGarantie, Reparatur und Service
[email protected]
SonstigesSonstiges
[email protected]
Polska:Polska:
DIMAX International
Poland Sp.z o.o.
Polska, Warczawska,
306B 05-082 Stare Babice,
[email protected]
Україна:Україна:
ТОВ «Техно Трейд КС»,
вул. Електротехнічна 47, 02222,
м. Київ, Україна
[email protected]