BGU ZWK 790-2 User manual
USER‘S MANUAL
LOG CUTTING SAW
ZWK 790 - 2
Südharzer Maschinenbau GmbH
Helmestraße 94 ∙ 99734 Nordhausen/Harz
Receptionist: 03631/6297-0 ∙ -111
Internet: www.bgu-maschinen.de
e-mail: [email protected]
Made in
Germany
Set-up & instal-
lation
Use
Maintenance
Accessories
Carefully read these instructions
before starting and using your saw!
2
CONTENT
1. GENERAL INFORMATION 3
1.1 About this manual 3
1.2 Delivery and transport claims 3
2. PRODUCT OVERVIEW 5
2.1 Circular log cutting saw with PTO drive 5
3. SAFETY PICTOGRAMS AND WARNING 6
LABELS 6
4. SAFETY 8
4.1 Safety rules about saw blade 9
4.2 Mandatory application field 9
5. OPERATING INSTRUCTIONS 10
6. CONNECTION AND DISCIONNECTION 11
TO PTO DRIVE 11
6.1 Safety rules 11
7. REPAIRS AND MAINTENANCE 12
7.1 Regular maintenance 12
7.2 Cleaning after use 12
7.3 Replacing the saw blade 12
7.5 Tensioning and replacing the V-belt 13
7.6 Consumables 13
8. HANDLING AND TRANSPORTATION 14
9. DISMOUNTING AND DISCARDING 14
AN OBSOLETE MACHINE 14
10. TECHNICAL DATA 15
10.1 Noise emissions 15
11. TROUBLESHOOTING CHART 17
12. OTHER AREAS OF POSSIBLE HAZARD 17
12.1 Mechanical dangers 17
12.2 Environmental dangers 17
13. WARRANTY 18
14. EC STATEMENT OF COMPLIANCE 19
3
Dear customer,thank you very much for your trust and preference in
choosing our equipment and joining the number of our best customers
in the world. We are confident that our equipment will be up to all your
expectations and assure you a long lasting quality and performance.
1.1 About this manual
Please take time to read this manual and learn to how operate and
maintain the saw safely.
For your easier reading this manual is laid out in several sections.
The sections are progressively numbered 1 through 13 and listed on
the “content” page.
The information, pictures and technical data in this document reflect
current or planned product features, functions, and characteristics as
of the publication date. Because of on-going product improvements
and feature additions, information in this document is subject to
change without notice.
If you are experiencing a problem or functional trouble on your ma-
chine, please read the “trouble-shooting” section to identify possible
causes and remedies.
When you have checked all the possible causes listed and you are
still experiencing the problem, ask your Authorized Service Centre for
help.
When you order parts maintenance or repair services, your Authorized
Service Centre, your dealer or eventually the manufacturer need your
machine serial number and engine serial number. These are the num-
bers that you have recorded on the product identification label of the
manufacturer on the machine.
1.2 Delivery and transport claims
Upon delivery of the machine please check for visual machine dama-
ges such as damaged packing or scratched buckled parts. If so, make
a remark on all copies of the delivery bill before signing for accep-
tance.
Should your shipper or the truck driver refuse to accept your claim,
fully reject delivery and make sure to inform us (the manufac-
turer) immediately. No claims shall be taken into account by the ship-
per or by the insurance company, if a reservation note is not made on
the delivery bill. All transport damages must be notified within latest 2
days from delivery.
1. GENERAL INFORMATION
4
Therefore delivery must be collected and inspected within this term.
Later claims shall be disregarded.
In case of assumed but not visually clear transport damages make
sure to mark the following sentence on the delivery bill : „Reserved
delivery due to assumed transportation damages“. Insurance
and shipping companies act with extreme caution in case of transport
damages and sometimes refuse to accept responsibility. Please make
sure to provide clear and exhaustive evidence (photos) of the claimed
damages.
Thank you in advance for your help and understanding in this matter.
5
Upper hood
Wheels
Log carriage
Saw blade
2. PRODUCT OVERVIEW
PTO with
gear
2.1 Circular log cutting saw with PTO drive
Blade shaft
Steel stand
Grip handle
Lower hitch
pins
Top hitch point
6
LABELS
1. Warning label
„Do not operate the machine in-doors!“
Never run the machine inside a closed area.
Exhaust fumes are toxic!.
2. Safety pictogram „Wear ear plugs and goggles!“
Loud noise can cause impairment or loss of hearing, wear a suitable
protective device such as ear plugs and safety goggles.
3. Safety pictogram „Direction arrow“
Motor, PTO shaft and driveline must be turning in the same direction
as shown by this arrow.
4. Warning label
max. 540 Rev./min. This label shows the
max admissible number of PTO shaft revolutions.
5. Identifi cation label „Product identifi cation“
This label shows the company details of the manufacturer and the-
main machine technical data.
6. „BGU-Maschinen Blue Line“
Manufacturer‘s Logo
7. Personal protection sign
Mind these instructions for safe operation!
3. SAFETY PICTOGRAMS AND WARNING
Fabriknummer
Typ ZWK 790 / 2
2132 12 Bj.12
Gewicht 198 kg
Sägeblattdurchmesser
max. Zapfwellendrehzahl
750/30 mm
540 1/min
Südharzer Maschinenbau GmbH
Helmestr. 94 99734 Nordhausen
179
Bezeichnung Wippkreissäge
7
8. Machine safety label
„Before operating the machine read this manual
and mind all safety instructions“
To avoid personal injury or death, carefully read and understand all
instructions pertaining to the saw including the engine manufacturer’s
operating and maintenace instruction manual.
9. Personal protection sign
“Wear suitable protective boots!”
This label shows that you must wear safety boots when working with
the saw.
10. Personal protecion sign
“Wear suitable protective gloves!”
This label shows that you must wear safety gloves when working with
the saw.
11. Machine safety label
Before setting-up, servicing, maintaining and cleaning the machi-
ne, disengage power and stop the engine. Lock the tool and secure
against accidental start.“
Keep your hands away from all moving parts!
Pinched hands danger!!
12. Machine safety label
„Read, understand, and follow all instructions in this manual and on
the splitter before starting“Keep at safety distance from the dange-
rous zone!
13. Safety-alert symbolmax. 540 Rev./min.
Read and recognize safety information. Be alert to the potential for
personal injury when you see this safety-alert symbol.
8
Strictly perform installation, set-up, maintenance, cleaning
and transportation with the motor switched off and the blade
firmly secured against accidental operation.
Immediately disconnect power off the machine in case of any
eventual fault or trouble.
The user shall strictly comply with these operation, set-up, mainte-
nance, repair and trouble-shooting instructions in order to assure safe
operation and no damages to the equipment. Moreover we recom-
mend to let the machine be run only and strictly by trained and skilled
staff who must be familiar with the applicable occupational safety and
health administration rules as well as applicable transportation rules.
Incorrect use of the saw can cause serious injury or death.
No person under school leaving age should operate a circular saw.
Those who have reached school leaving age but are below the age of
18 may operate a circular saw if supervised by a competent person of
18 years or over. The machine shall be installed and kept in a suitable
location selected by the customer for safest operation.
The working area around the machine must be kept as clear as pos-
sible from surrounding obstacles and slippery foundation floors should
be duly treated (do not use saw dust or wood ash for this purpose).
Make sure that the equipment stands on a safe stable foundation.
Do not allow within the hazardous zone any unauthorized third or per-
sons who are not familiar with the dangers related to use and opera-
tion of the machine. Allow no bystanders, especially children and pets
in the working area.
Also make sure to comply with the following provisions:
● Due and proper illumination of the working site must be provided at
all times.
● The saw blade must be duly sharpened for maximum performance
and no recoil danger. Flash and chips must be removed off the
crown wheel.
● Damaged or buckled blades (very likely to break during operation)
should not be used.
● Strictly ask a skilled licensed electrician for any repair of the electric
system.
● Always wear suitable hearing (ear plugs or muffs) and eye protec-
tion (goggles or safety glasses) while operating the machine.
● Ensure that a wide but confined area is available around the machi-
ne and assure maximum working freedom.
4. SAFETY
9
● Operators must wear steel toe safety shoes and snug-fitting tear-re-
sistant work cloths.
● No additional customised protections or tools should be provided on
board of the machine, other than the ones designed and supplied by
the manufacturer.
● Do not apply pressure (for instance by means of the wood stock)
against the blade to make it come to a quicker stop.
● The machine is not designed for indoor use (dust release).
● Never leave the machine unattended with the running motor.
● Before leaving the operator‘s station for any reason, stop the machi-
ne motor, disconnect power and secure the machine against acci-
dental operation.
4.1 Safety rules about saw blade
The unit is strictly designed for use with a 750mm (outer diameter)
blade.
Strictly use blades as per EN Standard 847-1.
Do not ever use worn out blades in need of sharpening.
Make sure that the blade shows good conditions, no damages, no
cracks, no buckling and no missing/broken teeth/bits.
Hard metal blades require special care and handling. Make sure that
the blade bits do not ever hit against hard surfaces (for example con-
crete floors), which might cause invisible bits damage.
Hard metal blades must be suitable to operate at 1800 revolutions per
minute.
4.2 Mandatory application field
These log-cutting saws are strictly designed for preparation of fire-
wood. Sawing to be strictly performed with wood stock on the log car-
riage. All other applications are forbidden and considered as “misuse”.
The manufacturer is not liable for any damage or injury resulting from
misuse!
The machine is capable to handle wood stocks in diameter of 8-30
cm. Shrubs and tiny branches bundles must be loaded on the carraige
and securely hold on both sides of the blade.
The machine is strictly conceived for ONE-MAN OPERATION ONLY.
Misuse will completely void your warranty. The manufacturer
accepts no liability for personal injuries and damages to other
equipment caused by misusing the machine.
10
This PTO-powered version „ZWK 790-2“ is an excellent machine with
inbuilt hydraulic system and PTO drive suitable both for firewood pre-
paration directly in the forest/wood (by simply powering it off your
tractor via a cardan shaft) and for stationary use in your yard.
A rugged all-steel construction assures longest machine life at any
operative condition.
This machine is specially designed to work with a 750 mm blade
approved and manufactured to EN 847-1.
When you switch the machine on make sure to check that the blade is
mounted to rotate in the proper direction before cutting any material.
The tool must rotate against the operator that is upward toward the
operator. If not, immediately switch the polarity in the plug of main
power cord using a phase changer. If you don’t feel familiar with
phase changing ask a licensed electrician to reset the saw cord.
Load the log in the carriage and smoothly push it to the blade.
If you working with twisted or crooked logs make sure to load
the log on the carriage, so that the bolged side of the log is
turned to the blade in order to avoid the log from tipping over
or jamming during cutting and consequent possible even ma-
jor damages to the blade.
Now fasten the grip on the log carriage and push to smoothly tilt it
over towards and through the blade.
NOTE: avoid excessive pressure on the carriage through the blade
with cutting. Excessive hold-down pressure may slow the blade down
and cause dangerous jamming!
When doing so avoid all jerky, bumpy movements that could lead to
risky and dangerous situations. Timber in maximum length of 1.1 m
must lay on the trough by the entire length with no projecting end. After
the first log is cut off the timber, let the carriage swing down to start-po-
sition (wide opened) before advancing the remaining timber to the blade
and starting a new sawing cycle. If you try to feed the stock forward and
cut before the carriage reaches back to start position, you may run the
risk of hitting the stock against the blade guard consequently causing se-
vere personal injuries and machine damages for which the manufacturer
carries no liability.
The ZWK790-2 model is provided with a PTO power arrangement. A PTO
shaft is an efficient means of transferring mechanical power between farm
tractors and implements. This makes the ZWK 790-2 model an ideal pi-
ece of equipment for those who want to process their timber in the forest
producing clean logs directly on the felling site with great savings in terms
of later cleaning and disposal of wood chips, bark and sawdust.
5. OPERATING INSTRUCTIONS
Table of contents
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