Cobra LS520H User manual

MODELS: LS520H- LS520D
COBRA LOG SPLITTER
OWNER’S MANUAL

Symbols machine / operating manual 1
Do not operate machine before having read
the operating instructions, understood all the
notes and assembly the machine as
described here.
Keep the instructions in a safe place for future use.
C
Co on nt te en nt ts s
Inspection of Delivery 1
Proper use 1
Residual risks 2
Safe working 2
Description of device 3
Positioning 3
Start-up 3
Working with the log splitter 4
Maintenance and care 6
Guarantee 7
Possible problems 8
Technical data 8
Inspection ooffddeelliivveerryy
After unpacking, check the contents of the box
!That it is complete
!Check for possible transport damage
Report any damage or missing items to your dealer, supplier
or the manufacturer immediately. Complaints made at a later
date will not be acknowledged.
!1 ready mounted machine unit
!1 operating manual
!1 operating lever
S
Sy ym mb bo ol ls s m ma ac ch hi in ne e
Read the operating and safety instructions
thoroughly before commissioning the
machine.
Wear safety shoes when working with the
machine to protect the feet from falling logs.
Wear safety gloves when working with the
machine to protect the hands from chips and
splinters.
Wear safety goggles when working with the
machine to protect the eyes from chips and
splinters.
Do not remove or modify any protection or
safety devices.
Nobody else should be in the working area of
the machine other than the operator. Keep
other persons or animals out of the danger
area (minimum distance 5 m).
Danger of being cut or trapped; never touch
any dangerous parts when the splitting
wedge is in motion.
Caution!
Always note when the log ram is in motion.
Caution!
Never remove a log jammed against the
wedge by hand.
Caution!
Before starting any repair, maintenance or
cleaning work, always switch off the motor
and remove the plug from the socket.
Stop!
Follow the operating instructions.
Open the bleed screw
ÎBleeding Page 13
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Sy ym mb bo ol ls s o op pe er ra at ti in ng g m ma an nu ua al l
Threatened hazard or hazardous situation. Not
observing this instruction can lead to injuries or
cause damage to property.
LImportant information on proper handling. Not
observing this instruction can lead to faults.
User information. This information helps you to use
all the functions optimally.
Assembly, operation and servicing. Here you are
explained exactly what to do.
S
Sy ym mb bo ol l m ma ac ch hi in ne e / / p pa ac ck ka ag gi in ng g
Electrical devices do not go into the domestic
rubbish. Give devices, accessories and packaging
to an ecofriendly recycling.
According to the European Directive 2002/96/EC on
electrical and electronic scrap, electrical devices that are no
longer serviceable must be separately collected and brought
to a facility for an environmentally compatible recycling.
P
Pr ro op pe er r u us se e
The log splitter must only be used for splitting logs.
The log splitter is only applicable for the private utilization
in the field of house and hobby.
1

Only straight-cut logs are suitable for use with the log
splitter.
Metal parts (nails, wire etc.) must be removed from logs
before splitting.
The intended usage also includes compliance with the
operating, servicing and repair conditions prescribed by the
manufacturer and following the safety instructions included
in the instructions.
Any other use is deemed not to be use as prescribed. The
manufacturer is not liable for any type of damage resulting
from this: the user bears the sole risk.
Unauthorised modifications on the log splitter exclude a
liability of the manufacturer for damages of any kind
resulting from it.
Only persons who are familiarised with the device and
informed about possible risks are allowed to prepare,
operate and service this device. Repair works may only be
carried out by us or by a customer service agent
nominated by us.
R
Re es si id du ua al l r ri is sk ks s
Even if used properly, residual risks can exist even if
the relevant safety regulations are complied with due to the
design determined by the intended purpose.
Residual risks can be minimised if the “Safety information” and
the “Intended usage” as well as the whole of the operating
instructions are observed.
Observing these instructions, and taking proper care, will
reduce the risk of personal injury or damage to the equipment.
Failure to observe the safety precautions can lead to injury
to the operator or damage to property.
Risk from electricity, by using non-standard electrical
connections.
Touching live parts of opened electrical components.
Risk of fire and slipping by leaking hydraulic fluid.
In addition, in spite of all the precautionary measures taken,
non-obvious residual risks can still exist.
S
Sa af fe e w wo or rk ki in ng g
Before commissioning this product, read and keep
to the following advice. Also observe the preventive
regulations of your professional association and the
safety provisions applicable in the respective country, in
order to protect yourself and others from possible injury.
LPass the safety instructions on to all persons who work
with the machine.
LKeep these safety instructions in a safe place.
Make yourself familiar with the equipment before using it,
by reading and understanding the operating instructions.
Do not use the machine for unsuitable purposes (see
“Normal intended use” and “Working with the log splitter”).
Ensure that you have stand in a secure standing position
and maintain your balance at all times.
Take a working position, which is behind the slide of the
area of the operating lever. Never stand in the splitting
wedge’s zone.
Never stand on top of the machine.
Pay attention at all times. Take care with what you are
doing, and approach the work sensibly. One moment of
carelessness when using the device can result in serious
injuries. Do not use the machine:
−when you are tired.
−under the influence of drugs, alcohol or medications
that may impair your powers of judgement.
When working with the machine, always wear
−protective goggles or face mask
−safety gloves
−ear protection, if necessary
−safety shoes with steel toe-caps
Wear suitable work clothing:
−do not wear any loose-fitting clothing or jewellery, since
these may be caught or trapped by moving parts
Within his area of work the operator is responsible for
third parties.
The machine may not be operated by children or young
people under the age of 18.
Keep children away form machine.
Never operate the machine if other persons are in the
immediate vicinity.
Never leave the saw unattended.
Keep your workplace in an orderly condition! Untidiness
can result in accidents.
Do not overload the machine! You work better and safer in
the given performance range.
Only operate the machine with complete and correctly
attached safety equipment and do not alter anything on
the machine that could impair the safety.
Faulty or damaged parts in the device must be replaced
immediately.
Do not spray machine with water
(this is hazardous due to live components).
Do not leave the machine standing in the rain or use
when raining.
Store the unused machine in a dry locked place away
from the reach of children.
Switch the machine off and remove the
mains plug from the socket when
−carrying out repair works
−carrying out servicing and repair works,
removal of faults
−transporting
−leaving unattended (even during short interruptions)
Check the machine for possible damage
−Before continuing to use the machine, the protective
devices must be inspected to ensure that they work
perfectly and with their intended function
−Check whether the movable parts function perfectly
and do not stick or whether the parts are damaged. All
parts must be correctly installed and fulfil all conditions
to ensure perfect operation of the saw
2

−Damaged guards and parts must be properly repaired
or exchanged by a recognized, specialist workshop;
insofar as nothing else is stated in the instructions for
use.
−Damaged or illegible safety warning labels should be
replaced immediately.
Electrical safety
Electrical connections must conform to IEC 60245 (H 07
RN-F) with a cable cross-section of at least
⇒2.5 mm² for a maximum cable length of up to 10 m
Never use the machine with a power supply cable of over
10 m in length. Longer power supply cables will cause a
drop in voltage. The motor will not be able to provide its
maximum performance and the operation of the machine
will be impaired.
When laying the connecting attachments, be sure that
they do get crushed or bent, and that the plug-and-socket
connection does not get wet.
Do not use the cable for purposes for which it is not meant.
Protect the cable against heat, oil and sharp edges. Do
not use the cable to pull the plug from the socket.
Regularly check the extension cables and replace them if
they are damaged.
Do not use any defective connection cables.
When working outdoors, only use extension cables
especially approved and appropriately labelled for outdoor
use.
Do not set up any provisional electrical connections.
Never bypass protective devices or deactivate them.
The electrical connection or repairs to electrical parts
of the machine must be carried out by a certified
electrician or one of our customer service points. Local
regulations – especially regarding protective measures –
must be observed.
Repairs to other parts of the machine must be carried
out by the manufacturer or one of his customer service
points.
Use only original spare parts, accessories and special
accessory parts. Accidents can arise for the user through
the use of other spare parts. The manufacturer is not
liable for any damage or injury resulting from such action.
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De es sc cr ri ip pt ti io on n o of f d de ev vi ic ce e
Fig. 1
P
Po os si it ti io on ni in ng g
Position the log splitter on a work surface at a height of about
60 – 75 cm, this will create an comfortable working position.
Place chocks under the wheels to prevent the machine rolling
during operation.
Ensure that the working area meets the following conditions:
−no danger of slipping
−level
−free of obstacles
−sufficiently well lit
Do not operate the machine in the direct vicinity of gas or
petrol pipes or containers, or any other easily inflammable
materials.
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St ta ar rt t- -u up p
Check that the machine is completely and correctly
assembled.
Before using the splitter, make sure each time that
−there are no faulty connections (tears, cuts, etc.)
−there are no damage at the machine
−all screws are tight
−check the hydraulic system for any possible leaks
3
1.hydraulic tank
3.frame tube
5.electric motor
7.push button
2.splitting wedge
4.log ram
6.switch
8.plug
9.wheel 10.operating lever
11.support leg 12.handle
13.extension leg

LMains connection
Compare the voltage given on the machine model plate
e.g. 230 V with the mains voltage and connect the machine
to the relevant and properly earthed plug.
Only use connection cables with sufficient diameters.
Connect the machine via a 30 mA fault current safety
switch.
LFuse protection: 13A
LOperating pushbutton
Fig. 2
Operating pushbutton
Switching on
Push the green button. The motor is running as long as the
green button remains pushed.
Switching off
Stop pushing the green button.
Do not use any device where the operating pushbutton
does not work properly. Repair or replace damaged
pushbuttons immediately.
LHydraulics
Never operate the machine in the event of any possible
danger from hydraulic fluid.
Ensure that the machine and working area are clean and
free of oil.
Danger of slippage or fire!
Check the hydraulic reservoir regularly to ensure that it
contains enough hydraulic oil (see “Care and
maintenance”)
Capacity: 3.2 litres
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Wo or rk ki in ng g w wi it th h t th he e l lo og g s sp pl li it tt te er r
additional SAFETY INSTRUCTIONS
The log splitter may only be operated by a single person.
The machine may only be operated by persons over the
age of 18 years, and who have read and understood these
operating instructions.
Wear protective equipment (safety goggles/mask, gloves,
safety shoes) to protect yourself from possible injury.
Never try to split logs containing nails, wire or other similar
objects.
Already split wood and wood chips create a dangerous
working area. The operator may stumble, slip or fall.
Always keep the working area neat and tidy.
Never place the hands on or near any moving parts of the
machine when it is switched on. Maintain a safe distance
from the log, the ram and the wedge in order to protect
your hands from injury.
Split only timber which corresponds to the maximal length
to be worked with.
What type of logs can I split?
Size of logs
Length: max. 520 mm
Diameter: 50 – 250 mm
The log diameter is a recommended guideline figure, because:
−thin logs can be difficult to split if they contain knots or if
the fibres are too strong.
−logs with a diameter of over 250 mm can be split if the
fibres are smooth and open.
Do not try to split green logs. Dry logs are much easier to split,
and do not cause jams as often as green (damp) wood.
Operation
Two-hand operation
1. Press the operating pushbutton on the electric motor. Wait
a few moments until the motor has reached its operating
revolutions and the required pressure has been built up in
the hydraulic pump – Fig. 3.
2. Press the operating lever down simultaneously – Fig. 3.
ÎThe log ram pushes the log against the splitting
wedge, and the log will be split.
3. Release the operating lever as well as the operating
pushbutton. The log ram will now return to its original
starting position – Fig. 4.
4

Fig. 3
Fig. 4
Special instructions for splitting logs:
Preparations:
The logs tobe split should be cut to the maximum dimensions
(520 mm long, ∅50 – 250 mm). Ensure also that the logs are
cut straight and square.
Place the log properly on the log splitter, so as not to cause
any risk of stumbling or falling to the operator.
Bleeding
Open the bleed screw 3 – 4 complete turns – Fig. 5.
Close the bleed screw again when you are finished splitting
logs.
Fig. 5
Bleed screw
tighten
open (bleeding)
Splitting logs:
¾Always place the logs lengthwise and flat on the main
frame of the log splitter. The log must be enclosed by the
log guide plates. Fig. 6
Fig. 6
¾Never place the log on the frame at an angle. Fig. 7
Fig. 7
¾Always ensure that the splitting wedge and the log ram
contact the ends of the log at right-angles.
¾Never try to split two logs at once.
¾Never try to remove or replace the log during the splitting
process.
5

LNever try to force the splitting of the log by maintaining
the pressure for several seconds. This can lead to damage to
the machine.
Reposition the log on the main frame and repeat the splitting
process, or put the log to one side.
How to release a jammed log?
1. Loose the operating lever as well as the operating
pushbutton that the log ram can go back.
1. Place a triangular wooden chock under the log, then move
the log ram forward so that it pushes the chock under the
jammed log.
2. If the log is not released, keep repeating this procedure,
using larger chocks, until the log is released.
Never use a hammer to release a jammed log, and keep
your hands away from the log.
Do not enlist the aid of a second person - this is a one-man
job.
Do not try to release the log by using a hammer, since this
may break the motor block.
Finishing work:
Wait for the log ram has go back to its initial
starting / basic position.
Then remove the plug from the power socket.
Close the bleed screw. Fig. 5
Follow the care and maintenance instructions.
C
Ca ar re e a an nd d m ma ai in nt te en na an nc ce e
Remove the plug from the power socket before
starting any maintenance or cleaning work.
Wear protective gloves in order to avoid injury to the
hands.
LObserve the following in order to keep the log splitter in
good working order:
Clean the machine thoroughly after you have finished
using it.
Remove any resin remains on the machine.
Oil the piston rod (Fig. 1) regularly with an
environmentally friendly spray oil.
Check the oil level and change the oil as necessary.
Sharpening the splitting wedge
After extended periods of use, or if the splitting performance is
reduced, sharpen the splitting wedge with a file (and remove
any burrs). Fig. 8
Fig. 8
How do I check the oil level?
1. The log ram must be in its starting position.
2. Stand the log splitter on end, with the filler opening at the
top. Fig 9
A second person will be required to up-end and
hold the log splitter.
3. Unscrew the dipstick – Fig. 10. Do not drop or lose the oil
seal when removing the dipstick.
4. Clean the dipstick and the oil seal.
5. Replace the dipstick fully into the oil reservoir.
6. Now remove the dipstick again, and read off the oil level.
If the oil level is between the two marking on the
dipstick, there is sufficient oil in the reservoir.
If the oil level is below the lower marking, more oil
should be added with the aid of a clean funnel.
lower marking upper marking
7. Check the oil seal and replace it if it is damaged in any
way.
8. Replace the dipstick and screw it firmly into place.
Caution! Do not tighten the screw too tightly, since this may
damage the oil seal or the thread in the cylinder cover.
Oil seal
Sharpen wedge
6

Fig. 9
Fig. 10
When should I change the oil?
The first oil change should be carried out after 50
operating hours, and then every 250 operating hours.
Changing the oil:
1. The log ram must be in its starting position.
2. Place a container under the log splitter to catch the old oil.
The container should have a capacity of at least 4 litres.
3. Unscrew the dipstick. Do not drop or lose the oil seal when
removing the dipstick.
4. Now tip the machine to empty the oil into the container.
5. Stand the log splitter on end, with the filler opening at the
top. Fig 9.
A second person will be required to up-end and
hold the log splitter.
6. Pour in the new hydraulic oil (3.2 litres) using a clean
funnel.
7. Clean the dipstick and the oil seal.
8. Check the oil seal and replace it if it is damaged in any
way.
9. Replace the dipstick and screw it firmly into place.
Caution! Do not tighten the screw too tightly, since this may
damage the oil seal or the thread in the cylinder cover.
Dispose of the old oil properly (local oil disposal
point). The old oil must not be poured into the
ground or drainage system, or mixed with other
waste.
LHydraulic oil
We recommend the following hydraulic oils for the hydraulic
cylinder:
¾Shell Tellus T 22
¾Aral Vitam Gf 22
¾BP Energol HLP 22
¾Mobil DTE 11
¾or equivalent
Do not use any other types of oil. The use of any other
type of oil will adversely affect the operation of the
hydraulic cylinder.
G
Gu ua ar ra an nt te ee e
This product is warranted in accordance with legal regulations for a
24 month period effective from the date of purchase by the first
user. This product will not be covered if used in a commercial
application. This warranty covers all material or production failures,
it does not include: defects from normal wear and tear, parts such
as, bearings, brushes, cables, brake pad, clutch disc, tyre, wheel,
belts, cutter blades, lubricant oils and grease or accessories.
Damage or defects resulting from abuse, accidents or alterations,
natural fading of painted or plated surfaces, sheet peeling and
other natural deterioration.
Any damage that occurs from the use of non-genuine Cobra parts
will not be covered. We reserve the right to reject any claim where
the purchase cannot be verified or when it is clear that the product
was not maintained properly. (Clean ventilation slots, carbon
brushes and serviced regularly) Expenses incidental to the
warranty claim that are not covered. Any damage resulting from
operating methods other than those indicated in the owner’s
manual will not be covered.
Dipstick
7

Electric motor performance P = 1500 W S3 (8 min/2 min)
50 – 250 mm
520
Problem possible cause remedy
Logs are not being split properly
(insufficient splitting performance)
⇒The log is not positioned correctly
⇒The log exceeds the maximum
dimensions or the wood is too hard for
the performance of the machine
⇒The splitting wedge is not working
properly
⇒Oil leak
⇒Hydraulic pressure too low
⇒Incorrect connecting lead (longer than
10 m or too small cable cross-section)
⇒Reposition the log correctly
⇒Cut the log to the required dimensions
⇒Sharpen the splitting wedge, and check
for any burrs or notches
⇒Place a sheet of cardboard under the
log splitter in order to locate the leak.
To correct the problem, refer to the
manufacturer.
⇒Check the oil level and add more oil if
necessary.
If the problem cannot be rectified, refer
to the manufacturer.
⇒Use the correct connecting lead
Log ram travels out jerkily or under heavy
vibration
⇒Air in the circuit⇒Open the bleed screw
⇒Check the oil level and add more oil if
necessary.
If the problem cannot be rectified, refer
to the manufacturer.
Log ram will not move out ⇒Hydraulic pump defective ⇒To correct the problem, refer to the
manufacturer.
Motor will not start ⇒No electrical power
⇒Connection cable defective
⇒Electric motor defective
⇒Check the fuse (13A).
⇒Replace the connection cable or have it
checked by an electrician.
⇒To correct the problem, refer to the
manufacturer.
Oil leak at the dipstick ⇒Oil seal at the dipstick not sealing⇒Replace the oil seal.
T
Te ec ch hn ni ic ca al l d da at ta a
Name
Model
Splitting force
Log length 520 mm
Log diameter
Stroke
Power supply 230 V ~ 50 Hz
Revolutions 2820 rpm
8
LS520H -LS520D
50kN(5T)
COBRA LS520H
TTrouble Shooting

14. EC-DECLARATION OF CONFORMITY
EC Declaration of Conformity
We herewith declare,
Cobra Garden Machinery
Henton & Chattell Ltd, London Road, Nottingham NG2 3HW UK
That the following machine complies with the appropriate basic safety and health requirements of the
EC Directive based on its design and type, as brought into circulation by us.
In case of alteration of the machine, not agreed upon by us, this declaration will lose its validity
Machine Description:
Log Splitter
Machine Type:
LS520H (LS520D)
Name of Notified Body
TÜV SÜD Industrie Service GmbH
Ridlerstraße 57, 80339 München, Deutschland
Applicable EC Directives
2006/42/EC
2006/95/EC
2004/108/EC
Applicable Harmonized
Standards
EN 60204-1:2006 + A1
EN 609-1:1999 +A2
ZEK 01.4-08/11.11
EN 55014-1:2006+A1
EN 55014-2:1997+A1+A2
EN 61000-3-2:2006+A1+A2
EN 61000-3-11:2000
Authorized
Signature/Date/Place
Peter J. Chaloner 27-06-2015
Title of Signatory
Managing Director
Name and address of the
person authorized to compile
the technical file
Cobra Garden Machinery
Henton & Chattell Ltd, London Road, Nottingham NG2 3HW
United Kingdom
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