OPTIMUM Maschinen OPTIgrind GU 30S User manual
Safety
Version 1.0.1 - 2020-08-102 Translation of original instruction
GU30S
EN
GU30S_GB.fm
Preface
Dear customer,
Thank you very much for purchasing a product made by OPTIMUM.
OPTIMUM metal working machines offer a maximum of quality, technically optimum solutions
and convince by an outstanding price performance ratio. Continuous enhancements and prod-
uct innovations guarantee state-of-the-art products and safety at any time.
Before commissioning the machine please thoroughly read these operating instructions and get
familiar with the machine. Please also make sure that all persons operating the machine have
read and understood the operating instructions beforehand.
Keep these operating instructions in a safe place nearby the machine.
The operating instructions include indications for safety-relevant and proper installation, opera-
tion and maintenance of the machine. The continuous observance of all notes included in this
manual guarantee the safety of persons and of the machine.
The manual determines the intended use of the machine and includes all necessary information
for its economic operation as well as its long service life.
In the paragraph "Maintenance" all maintenance works and functional tests are described which
the operator must perform in regular intervals.
The illustration and information included in the present manual can possibly deviate from the
current state of construction of your machine. Being the manufacturer we are continuously
seeking for improvements and renewal of the products. Therefore, changes might be performed
without prior notice. The illustrations of the grinding machine may be different from the illustra-
tions in these instructions with regard to a few details. However, this does not have any influ-
ence on the operability of the grinding machine.
Therefore, no claims may be derived from the indications and descriptions. Changes and errors
are reserved!
Your suggestion with regard to these operating instructions are an important contribution to
optimising our work which we offer to our customers. For any questions or suggestions for
improvement, please do not hesitate to contact our service department.
If you have any further questions after reading these operating instructions and you are not able
to solve your problem with a help of these operating instructions, please contact your special-
ised dealer or directly the company OPTIMUM.
Optimum Maschinen Germany GmbH
Dr.- Robert - Pfleger - Str. 26
D-96103 Hallstadt, Germany
Fax (+49)0951 / 96555 - 888
Email: in[email protected]
Internet: www.optimum-machines.com
1 Safety
Glossary of symbols
This part of the operating instructions
provides further instructions
calls on you to act
listings
Safety
Version 1.0.1 - 2020-08-10 3Translation of original instruction
GU30S EN
GU30S_GB.fm
explains the meaning and use of the warning notes included in these operating instructions,
defines the intended use of the grinding machine,
points out the dangers that might arise for you or others if these instructions are not
observed,
informs you about how to avoid dangers.
In addition to these operating instructions, please observe
the applicable laws and regulations,
the statutory provisions for accident prevention,
the prohibition, warning and mandatory signs as well as the warning notes on the grinding
machine.
Always keep this documentation close to the grinding machine.
1.1 Safety instructions (warning notes)
1.1.1 Classification of hazards
We classify the safety warnings into different categories. The table below gives an overview of
the classification of symbols (ideogram) and the warning signs for each specific danger and its
(possible) consequences.
Symbol Alarm expression Definition / consequence
DANGER! Impending danger that will cause serious injury or death to people.
WARNING! A danger that can cause serious injury or death.
CAUTION!
A danger or unsafe procedure that can cause personal injury or damage
to property.
ATTENTION!
Situation that could cause damage to the grinding machine and product,
as well as other types of damage.
No risk of injury to persons.
INFORMATION
Practical tips and other important or useful information and notes.
No dangerous or harmful consequences for people or objects.
In case of specific dangers, we replace the pictogram with
general danger with a warning of injury to hands, hazardous electrical
voltage, rotating parts.
Safety
Version 1.0.1 - 2020-08-104 Translation of original instruction
GU30S
EN
GU30S_GB.fm
1.1.2 Other pictograms
1.2 Intended use
WARNING!
In the event of improper use, the grinding machine
will endanger personnel,
the grinding machine and other material property of the operating company will be
endangered,
the functionality of the grinding machine may be compromised.
The grinding machine is designed and built for sanding a wide variety of materials. The grinding
machine must be used exclusively for this purpose.
If the grinding machine is used for grinding materials that are hazardous to health or generate
dust, a suitable extraction system must be connected.
If the grinding machine is used in any way other than described above, modified without author-
ization of Optimum Maschinen Germany GmbH, then the grinding machine is being used
improperly.
We will not be held liable for any damages resulting from any operation which is not in accord-
ance with the intended use.
We expressly point out that the guarantee will expire, if any constructive, technical or proce-
dural changes are not performed by the company Optimum Maschinen Germany GmbH. It is
also part of the intended use that you
the limits of performance of the grinding machine are observed,
the operating manual is observed,
Activation forbidden! Warning: flammable
substances! Warning: suspended loads! Warning: risk of stumbling!
Warning: tilting danger! Warning: automatic start-
up! Warning: biological hazard! Warning: injuries to hands!
Read the operating
instruction before
commissioning!
Pull out the mains plug! Wear protective glasses! Use face shield!
Wear safety shoes! Wear a protective suit! Use ear protection! Protect the environment!
Safety
Version 1.0.1 - 2020-08-10 5Translation of original instruction
GU30S EN
GU30S_GB.fm
the inspection and maintenance instructions are observed.
WARNING!
Severe injuries due to non-intended use.
It is forbidden to make any modifications or alternations to the operating parameters
values of the grinding machine. They could pose an accident hazard to persons and
cause damage to the grinding machine.
ATTENTION!
If the grinding machine is not used as intended or if the safety directives or the operating
instructions are ignored the liability of the manufacturer for any damages to personnel
or objects resulting hereof is excluded and the claim under guarantee is becoming null
and void!
1.3 Reasonably foreseeable misuse
Any other use other than that specified under "Intended use" or any use beyond the described
use shall be deemed as non-intended use and is not permissible.
Any other use has to be discussed with the manufacturer.
In order to avoid misuse, it is necessary to read and understand the operating instructions
before first commissioning.
Operators must be qualified.
1.3.1 Avoiding misuse
WARNING!
Risk of injury caused by flying workpieces.
Ensure the gap between the grinding wheel and bearing surface is as small as possible and
readjust the support surface immediately if the distance is too big. The distance from the sup-
porting surface to the grinding wheel may not be less than 2 mm. However, the distance may
be greater if the grinding process and the material used require this for security reasons.
If the support surface can no longer be adjusted, the grinding wheel must be replaced.
The direction of rotation of the grinding machine must be in the direction of the contact surface
or the stop on belt grinder device. If the phase sequence is not used correctly, it is possible to
operate the grinding machine in the wrong direction of rotation.
Pay attention to the current direction of rotation of the grinding machine to prevent the spin-up
of workpieces at the start of grinding.
We expressly point out that the guarantee will expire, if any constructive, technical or proce-
dural changes are not performed by the company Optimum Maschinen Germany GmbH.
WARNING!
Risk of injury caused by flying workpieces. Injuries caused by sharp-edged workpieces.
Injuries caused by hot workpieces. Wear protective gloves and goggles. For certain
materials it may be necessary to wear face protection instead of safety glasses.
Make sure that the support surface on the grinder and the belt sander for the workpiece are
firmly clamped.
1.4 Possible dangers caused by the grinding machine
The grinding machine was built using state-of-the-art technology. Nevertheless, there is a resid-
ual risk, as the grinding machine operates with
high speeds,
rotating parts,
Safety
Version 1.0.1 - 2020-08-106 Translation of original instruction
GU30S
EN
GU30S_GB.fm
grinding wheel (emission of sparks),
a sanding belt,
electrical voltage and currents.
We have used design and safety engineering to minimize the health risk to personnel resulting
from these hazards.
If the grinding machine is used and maintained by personnel who are not duly qualified, there
may be a risk resulting from its incorrect or unsuitable maintenance.
INFORMATION
Everyone involved in the assembly, commissioning, operation and maintenance must
be duly qualified,
and strictly follow these operating instructions.
Always disconnect the grinding machine from the electrical power supply before performing
cleaning or maintenance tasks.
CAUTION!
The grinding machine may only be operated with clamped support plate and clamped
rotation possibility of the belt grinding device. Operation with a dismantled counter
support for the workpiece or in the non-clamped state of setting options can lead to
dangerous conditions for the operator. Make sure that the gap between the support plate
of the workpiece on the belt grinder and the grinding wheel is as small as possible.
Disconnect the grinding machine immediately, whenever you detect a failure in the
safety devices or when they are not fitted!
All additional devices installed by the operator must be equipped with the stipulated
safety devices. This is your responsibility as the operator!
Safety devices on page 7
1.5 Personnel qualification
1.5.1 Target group
This manual is addressed to
the operating companies,
the operators,
the maintenance personnel.
Consequently, the warning notes refer both to the use of the grinding machine and to its main-
tenance.
Always disconnect the grinding machine from the electrical power supply. This will prevent it
from being used by unauthorized persons.
The qualifications of the personnel for the different tasks are mentioned below:
Operator
The operator has been instructed by the operating company regarding the assigned tasks and
possible risks in case of improper behaviour. Any tasks which need to be performed beyond the
operation in standard mode must only be performed by the operator, if so indicated in these
instructions and if the operator has been expressively commissioned by the operating com-
pany.
Qualified electrician
With professional training, knowledge and experience as well as knowledge of respective
standards and regulations, qualified electricians are able to perform work on the electrical sys-
tem and recognise and avoid any possible dangers.
Safety
Version 1.0.1 - 2020-08-10 7Translation of original instruction
GU30S EN
GU30S_GB.fm
Qualified electricians have been specially trained for the working environment, in which they are
working and know the relevant standards and regulations.
Qualified personnel
Due to their professional training, knowledge and experience as well as knowledge of relevant
regulations, qualified personnel are able to perform the assigned tasks and to independently
recognise and avoid any possible dangers.
Instructed person
Instructed persons were instructed by the operating company regarding the assigned tasks and
any possible risks of improper behaviour.
INFORMATION
Everyone involved in the assembly, commissioning, operation and maintenance must
be duly qualified,
and strictly follow these operating instructions.
In the event of improper use
there may be a risk to personnel,
the grinding machine and other property and
the functionality of the grinding machine may be compromised.
1.6 Safety measures during operation
CAUTION!
Danger due to inhaling dust and mist that are hazardous to health.
Depending on the materials to be machined and the agents used, dusts and mists can
arise that are detrimental to health.
Ensure that the harmful dust and mist generated are safely sucked off at the point of
origin and routed away from the working area or filtered.
1.7 Safety devices
The grinding machine must only be operated with fully functional safety devices.
Stop the grinding machine immediately if there is a failure on the safety device or becomes inef-
fective.
It is your responsibility!
If a safety device has been activated or has failed, the grinding machine must only be used if
the cause of the fault has been eliminated,
you have verified that there is no danger to personnel or objects.
WARNING!
If you bypass, remove or override a safety device in any other way, you are endangering
yourself and other persons working with the grinding machine. The possible
consequences are:
injuries due to components or workpieces flying off at high speed,
contact with rotating parts,
fatal electrocution.
The grinding machine features the following safety devices:
A spark protection on the grinding wheel.
A protective guard with shaft cover on the grinding wheel.
Safety
Version 1.0.1 - 2020-08-108 Translation of original instruction
GU30S
EN
GU30S_GB.fm
A contact surface on the grinding wheel and a counter support for the workpiece on the
grinding belt.
A restart protection that prevents the unit from restarting independently by connecting the
power supply.
WARNING!
Although the isolating safety devices provided and delivered with the machine are
designed to reduce the risks of workpieces being ejected or parts of tools or workpieces
breaking off, they cannot eliminate these risks completely. Always work carefully and
observe the limit values of the grinding process.
1.7.1 Spark-guard and support surface
Adjust the guard to the correct height before you start working. To do so, slacken the clamping
screw, set the required height and re-tighten the clamping screw. Observe the correct distance
to the grinding wheel.
1.8 Safety check
Check the grinding machine regularly.
Check all safety devices
before starting work,
once a week (with the machine in operation) and
after all maintenance and repair work.
1.9 Personal protective equipment
For certain work personal protective equipment is required.
Protect your face and your eyes: Wear a safety helmet with facial protection when perform-
ing work where your face and eyes are exposed to hazards.
Wear protective gloves when handling pieces with sharp edges.
Use safety shoes when you assemble, disassemble or transport heavy components, or
transport the grinding machine.
Use ear protection if the noise level (emission) in the workplace exceeds 80 dB (A).
Before starting work make sure that the required personal protective equipment is available
at the work place.
CAUTION!
Dirty or contaminated personnel protective equipment can cause illness. It must be
cleaned after each use and at least once a week.
1.10 For your own safety during operation
WARNING!
Before switching the grinding machine on, make sure that there is no risk of personal
injury or damage to property.
Avoid any unsafe work methods:
The instructions mentioned in these operating instructions have to be strictly observed dur-
ing assembly, operation, maintenance and repair.
Use protective glasses!
Do not work on the grinding machine, if your concentration is reduced, for example,
because you are taking medication.
Stay on the grinding machine until the working spindle has come to a complete standstill.
Use the specified personal protective equipment. Ensure you wear close-fitting clothing
and, if necessary, a hairnet.
Safety
Version 1.0.1 - 2020-08-10 9Translation of original instruction
GU30S EN
GU30S_GB.fm
Make sure that your operation does not create a safety hazard.
1.11 Disconnecting and securing the grinding machine
Disconnect the mains plug before starting maintenance and repairs.
1.12 Emissions
The generation of noise emitted by the grinding machine is 70 to 80 dB(A). If the grinding
machine is installed in an area where various machines are in operation, the noise exposure
(immission) on the operator of the grinding machine at the working place may exceed 80 dB(A).
INFORMATION
This numerical value was measured on a new machine under the operating conditions specified
by the manufacturer. The noise behaviour of the machine might change depending on the age
and wear of the machine.
Furthermore, the noise emission also depends on production engineering factors, e.g. the used
material.
INFORMATION
The specified numerical value represents the emission level and does not necessarily a safe
working level. Though there is a dependency between the degree of the noise emission and the
degree of the noise disturbance it is not possible to use it reliably to determine if further precau-
tion measures are required or not. The following factors influence the actual degree of the noise
exposure of the operator:
Characteristics of the working area, e.g. size or damping behaviour,
other noise sources, e.g. the number of machines,
other processes taking place in proximity and the period of time, during which the operator
is exposed to the noise.
Furthermore, it is possible that the admissible exposure level might be different from country to
country due to national regulations. This information about the noise emission should, how-
ever, allow the operator of the machine to more easily evaluate the hazards and risks.
CAUTION!
Depending on the overall noise exposure and the basic threshold values, machine
operators must wear appropriate hearing protectors. We generally recommend the use
of noise and ear protection.
1.13 Basic information on grinding wheels
Various shortcomings during installation and operation can lead to the bursting of grinding
wheels.
Ordinary grinding wheels are generally not designed to withstand a greater lateral load.
The tapping off cutting debris from the grinding wheel always leads to damage of the grind-
ing wheel.
Grinding wheels which have an imbalance can burst more easily.
An unbalance of a grinding wheel cannot be completely removed by trueing with a diamond
dresser.
Incorrectly stored grinding wheels can burst immediately after switching on, or individual
small fragments can fly away like a bullet.
Technical specification
Version 1.0.1 - 2020-08-1010 Translation of original instruction
GU30S
EN
GU30S_GB.fm
2 Technical specification
3 Delivery, interdepartmental transport and unpacking
CAUTION!
Injuries caused by parts falling over or off a forklift, pallet truck or transport vehicle. Only
use means of transport that can carry the total weight and are suitable for it.
3.1 Notes on transport, installation and unpacking
Improper transport of individual devices and minor machines, unsecured devices and minor
machines stacked on top of each other or next to each other in packed or already unpacked
condition is accident-prone and can cause damage or malfunctions for which we do not grant
any liability or guarantee.
Transport the scope of delivery secured against shifting or tilting with a sufficiently dimen-
sioned industrial truck to the installation site.
3.1.1 General risks during internal transport
CAUTION: DANGER OF TIPPING!
The device may be lifted unsecured by a maximum of 2cm.
Employees must be outside the danger zone, the reach of loads. Warn employees and, if
necessary, advise employees of the hazard.
Act responsibly during transport and always consider the consequences. Refrain from daring
and risky actions.
Gradients and descents (e.g. driveways, ramps and the like) are particularly dangerous. If such
passages are unavoidable, special caution is required.
Electrical connection 3x 400V ~50Hz ( 60 Hz )
Motor power 2.2 kW
Speed ( 50 Hz ) [ rpm] 1450
Speed ( 60 Hz ) [ rpm] 1740
Grinding wheel [mm] Ø 300 x 50
Grinding speed of grinding wheel ( 50 Hz ) [ m/s ] 22
Grinding speed of grinding wheel ( 60 Hz ) [ m/s ] 27
Grinding speed of belt sander ( 50 Hz ) [ m/s ] 10
Grinding speed of belt sander ( 60 Hz ) [ m/s ] 12
Length of sanding belt/ -width [mm] 1190 x 100
Suction connection on grinding wheel Ø 35 and Ø 50
Suction connection on belt sander Ø 30
Machine weight [kg] 61
Shaft diameter [mm] Ø25
Grinding wheel bore diameter [mm] Ø75
Work area Keep a work area of at least one metre around the machine
free for operation and maintenance.
Delivery, interdepartmental transport and unpacking
Version 1.0.1 - 2020-08-10 11Translation of original instruction
GU30S EN
GU30S_GB.fm
Before starting the transport check the transport route for possible danger points, unevenness
and disturbances as well as for sufficient strength and load capacity.
Danger points, unevenness and disturbance points must be inspected before transport. The
removal of danger spots, disturbances and unevenness at the time of transport by other
employees leads to considerable dangers.
Careful planning of internal transport is therefore essential.
3.2 Unpacking and connecting
The grinding machine is ready for operation. In order to obtain the correct direction of rotation,
the phase sequence must be changed if necessary. This is done at your three-phase connec-
tion or - if equipped with it - at the three-phase connector by changing the phase sequence.
3.3 Scope of delivery
Check the grinding machine immediately after delivery for transport damage, missing parts and
loose locking bolts. Compare the scope of delivery with the delivery note. Grinding wheels and
sanding belts are available in specialist shops or from our main catalogue.
3.4 Storage
ATTENTION!
Incorrect and improper storage might result in damage or destruction of electrical and
mechanical machine components.
Store packed and unpacked parts only under the intended environmental conditions.
Follow the instructions and information on the transport box.
Consult Optimum Maschinen Germany GmbH if the machine and accessories are stored for
more than three months or are stored under different environmental conditions than those spec-
ified here.
3.5 Set-up and assembly
3.5.1 Installation site requirements
Organise the working area around the grinding machine according to the local safety regula-
tions.
Delivery, interdepartmental transport and unpacking
Version 1.0.1 - 2020-08-1012 Translation of original instruction
GU30S
EN
GU30S_GB.fm
CAUTION!
The grinding machine must be firmly connected to the substructure. For this purpose
there are holes in the base to screw the grinding machine to your worktable.
INFORMATION
In order to achieve high levels of functionality and machining accuracy, as well as a long ser-
vice life of the machine, the set-up location should meet certain criteria.
The following points should be noted:
The device must only be installed and operated in a dry and well-ventilated place.
The work table must be suitable for the belt grinder. If necessary, this table must also be
firmly connected to the subfloor.
Provide enough space for set-up and operating personnel and material transport.
Ensure adequate lighting is available (minimum value: 500 Lux, measured at support sur-
face for workpiece). In the event of a lower level of lighting, additional illumination must be
provided, e.g. by means of a separate workplace light.
The power plug of the grinding machine must be readily accessible.
CAUTION!
Arrange the machine's connection cable in such a way that it will not cause a tripping
hazard.
3.5.2 Extraction socket
For certain operations, it may be appropriate to connect the grinding machine to an extraction
system or to an industrial vacuum cleaner. The suction connection on the belt sander is Ø 30
mm. The suction connection on the grinding wheel Ø 35 and Ø 50 mm.
Use both extraction ports simultaneously or only one of the two extraction ports that best suits
the purpose of extraction using the material.
3.6 First commissioning
For first commissioning, the grinding wheel must be trued with a dressing stone to ensure the
true running of the grinding wheel.
Grinding wheels made of bonded abrasive (usually aluminium oxide Al2O3or also referred to as
corundum) have a natural delivery imbalance due to the press curtain in the manufacturing pro-
cess. Compound grinding wheels have a higher or lower density in some areas. This natural
imbalance cannot be removed with a dressing stone. However, the imbalance of the machine
can be reduced by turning the grinding wheel, e.g. by 180° on the grinding wheel shaft.
Delivery, interdepartmental transport and unpacking
Version 1.0.1 - 2020-08-10 13Translation of original instruction
GU30S EN
GU30S_GB.fm
3.7 Dimensions
Img.3-1:
12345
GU30S-dimension
Status Änderungen Datum Name
Gezeichnet
Kontrolliert
Norm
Datum Name
13.08.2019 e.muecke
R461
669
679
740
360
300
172
90°
30P
100
740
276 360
30P
100
45
P
35
P
215
Delivery, interdepartmental transport and unpacking
Version 1.0.1 - 2020-08-1014 Translation of original instruction
GU30S
EN
GU30S_GB.fm
3.8 Overview of belt grinder on the GU30S
CAUTION!
If the protective cover is used as support surface (3), the workpiece can fly towards you
or the protective cover can be pressed onto the abrasive belt. Use extreme caution when
machining workpieces using this method.
DANGER!
Danger of clothing being drawn in.
To adjust the belt run (4) from the front operator side, it would be necessary to reach
over the grinding machine. Therefore, only adjust the belt run (4) of the belt grinder from
the rear of the grinder.
Img.3-2:
3.9 First commissioning
ATTENTION!
Before commissioning the machine, all bolts, fastenings and protections must be
checked and retightened as necessary!
CAUTION!
Danger from the use of unsuitable sanding belts. Only use abrasive belts with the correct
width and length.
WARNING!
First commissioned of the grinding machine by inexperienced personnel constitute a
risk to personnel and equipment.
(1) Workpiece stop surface
(2) Workpiece support surface
(3) Protective cover
(4) Knurled screw for belt run
14
3
2
Operation
Version 1.0.1 - 2020-08-10 15Translation of original instruction
GU30S EN
GU30S_GB.fm
We do not accept any liability for damages caused by incorrectly performed commissioning.
Personnel qualification on page 6
3.9.1 Power supply
Connect the electrical supply cable.
Check the fusing (fuse) of your electrical supply.
4 Operation
If the drive is overloaded, the motor-protective circuit-breaker may trip. To reset the motor pro-
tection switch, press the button on the rear of the unit.
Before you start grinding, check that the workpiece is free of oil, grease and paint residues
This prevents smearing or soiling of the grinding wheel and sanding belt.
Check the condition of the grinding wheel. If the grinding wheel is dirty or muddied, the
grinding wheel must be roughened or replaced.
The workpiece support can be adjusted for certain grinding operations. Loosen the clamp-
ing screw to adjust the workpiece support.
Note that this adjustment results in a reduced potential load absorption of the workpiece
support.
The distance between grinding wheel and workpiece support / workpiece stop must be as
small as possible.
The rotation possibility of the belt grinding device must be firmly clamped.
Only put slight pressure on the workpiece.
Check the state of the grinding wheel. If it is dirty, it must be scraped clean or replaced.
Dispose of grinding wheels and grinding belts in an environmentally friendly manner.
4.1 Adjusting the belt run correctly
ATTENTION!
Pull out the mains plug and first move the sanding belt by hand in order to estimate the
correct running of the sanding belt and to roughly adjust it. Only then switch on the belt
grinder and then readjust the run of the sanding belt with the knurled screw (4).
The belt run is adjusted by adjusting the knurled screw (4) at the belt. By screwing in the
knurled screw, the tape reel moves in direction A. By unscrewing the knurled screw, the reel
moves in direction B. The sanding belt changes direction in opposite directions.
Img.4-1:
AB
4
Operation
Version 1.0.1 - 2020-08-1016 Translation of original instruction
GU30S
EN
GU30S_GB.fm
4.2 Surface grinding
Place the workpiece on top of the sanding belt, place it against the counter stop and press it
down.
4.3 Replacing the sanding belt
ATTENTION!
Use a new sanding belt if it is worn out. Continued use of a worn sanding belt may
damage the rollers and other parts of the belt grinder.
INFORMATION
Abrasive grains of corundum are glued onto abrasive paper with the aid of binders. Corundum
is aluminium oxide with the chemical name Al2O3. The grain size indicates whether an abra-
sive paper is coarse, medium, fine or very fine. Grain 100-180, for example, is a fine grain. The
numbers (40, 60, 80, 120) indicate the number of meshes per 25.4 mm length of one sieve side
of a vibrating sieve. The grain mixture of the abrasives is separated by vibrating screens
according to grain size. The higher the grain number, the finer the abrasive paper.
Unscrew the fixing screws of the cover (6) at the bottom and top as well as the lateral screw
(5) in order to be able to open the cover (6).
Turn out the tension lever (7) to release the tension of the grinding belt and then lift the
grinding belt off the rollers and insert a new grinding belt.
9
6
5
Operation
Version 1.0.1 - 2020-08-10 17Translation of original instruction
GU30S EN
GU30S_GB.fm
Img.4-2:
4.4 Replacing a grinding wheel
Included in delivery is a hand extractor for honing new grinding wheels, or for honing used
grinding wheels.
WARNING!
Grinding wheels must be replaced, if there is an excessive distance between the external
diameter of the grinding wheel and the completely readjusted workpiece support.
Disassemble the protective cover of the grinding wheel.
Loosen the shaft nut.
Hold the grinding wheel tight to loosen the nut. Make sure you use the correct direction to
loosen the nut.
Pull off the grinding wheel and the retaining washer from the shaft by hand.
8
7
7
Maintenance
Version 1.0.1 - 2020-08-1018 Translation of original instruction
GU30S
EN
GU30S_GB.fm
Check the new grinding wheel for visible damage prior to assembly.
5 Maintenance
5.1 Inspection and maintenance
INFORMATION
The bearing is lifetime-lubricated. It is not necessary to lubricate it again.
5.2 Cleaning
Even if a suction device is used, it is necessary to clean the grinding machine regularly from
deposited grinding residues in the interior.
5.3 Repair
Optimum Maschinen Germany GmbH accepts no liability nor does it guarantee against damage
and operating malfunctions resulting from failure to observe these operating instructions.
Use only perfect and suitable tools, only original spare parts or serial parts expressly approved
by Optimum Maschinen Germany GmbH for repairs.
6 Appendix
6.1 Copyright
This document is protected by copyright. All derived rights are reserved, especially those of
translation, re-printing, use of figures, broadcast, reproduction by photo-mechanical or similar
means and recording in data processing systems, either partial or total.
Subject to technical changes without notice.
Shaft nut Retaining washer
Thrust washer
Drive shaft
Appendix
Version 1.0.1 - 2020-08-10 19Translation of original instruction
GU30S EN
GU30S_GB.fm
6.2 Liability claims/warranty
Besides the legal liability claims for defects of the customer towards the seller, the manufac-
turer of the product, OPTIMUM GmbH, Robert-Pfleger-Straße 26, D-96103 Hallstadt, does not
grant any further warranties unless they are listed below or were promised as part of a single
contractual provision.
Liability or warranty claims are processed at OPTIMUM GmbH's discretion either directly or
through one of its dealers.
Any defective products or components of such products will either be repaired or replaced
by components which are free from defects. Title to replaced products or components is
transferred to OPTIMUM Maschinen Germany GmbH.
The automatically generated original proof of purchase which shows the date of purchase,
the type of machine and the serial number, if applicable, is the precondition in order to
assert liability or warranty claims. If the original proof of purchase is not presented, we are
not able to perform any services.
Defects resulting from the following circumstances are excluded from liability and warranty
claims:
- Using the product beyond the technical options and proper use, in particular due to over-
straining of the machine.
- Any defects arising by one's own fault due to faulty operations or if the operating manual
is disregarded.
- Inattentive or incorrect handling and use of improper equipment
- Unauthorized modifications and repairs
- Insufficient installation and safeguarding of the machine
- Disregarding the installation requirements and conditions of use
- atmospheric discharges, overvoltage and lightning strokes as well as chemical influences
Neither are the following items covered by liability or warranty claims:
- Wearing parts and components which are subject to normal and intended wear, such as
V-belts, ball bearings, lighting, filters, seals, etc.
- Non reproducible software errors
Any services, which OPTIMUM GmbH or one of its agents performs in order to fulfil any
additional warranty are neither an acceptance of the defects nor an acceptance of its obli-
gation to compensate. These services neither delay nor interrupt the warranty period.
The court of jurisdiction for legal disputes between businessmen is Bamberg.
If any of the aforementioned agreements is totally or partially inoperative and/or invalid, a
provision which nearest approaches the intent of the guarantor and remains within the
framework of the limits of liability and warranty which are specified by this contract is
deemed agreed.
6.3 Advice for disposal / Options of reuse:
Please dispose of your equipment in an environmentally friendly manner, by not placing waste
in the environment but in a professional manner.
Please do not simply throw away the packaging and later the disused machine, but dispose of
both in accordance with the guidelines laid down by your city council/local authority or by an
authorised disposal company.
6.3.1 Decommissioning
CAUTION!
Immediately decommission used machines in order to avoid later misuse and
endangering of the environment or of persons.
Unplug the power cord.
Cut the connection cable.
Remove all operating materials from the used device which are harmful to the envi-
ronment.
Appendix
Version 1.0.1 - 2020-08-1020 Translation of original instruction
GU30S
EN
GU30S_GB.fm
If applicable remove batteries and accumulators.
Disassemble the machine if required into easy-to-handle and reusable assemblies
and component parts.
Dispose of machine components and operating fluids using the intended disposal
methods.
6.3.2 Disposal of new device packaging
All used packaging materials and packaging aids from the machine are recyclable and gener-
ally need to be supplied to the material reuse.
The packaging wood can be supplied to the disposal or the reuse.
Any packaging components made of cardboard box can be chopped up and supplied to the
waste paper collection.
The films are made of polyethylene (PE) and the cushion parts are made of polystyrene (PS).
These materials can be reused after reconditioning if they are passed to a collection station or
to the appropriate waste management enterprise.
Only forward the packaging materials correctly sorted to allow direct reuse.
INFORMATION
Please take care in your interest and in the interest of the environment that all component parts
of the machine are only disposed of in the intended and admitted way.
Please note that the electrical devices comprise a variety of reusable materials as well as envi-
ronmentally hazardous components. Please ensure that these components are disposed of
separately and professionally. In case of doubt, please contact your municipal waste manage-
ment. If appropriate, call on the help of a specialist waste disposal company for the treatment of
the material.
6.3.3 Disposal of electrical and electronic components
Please make sure that the electrical components are disposed of professionally and according
to the statutory provisions.
The device is composed of electrical and electronic components and must not be disposed of
as household waste. According to the European Directive regarding electrical and electronic
used devices and the implementation of national legislation, used power tools and electrical
machines need to be collected separately and supplied to an environmentally friendly recycling
centre.
As the machine operator, you should obtain information regarding the authorised collection or
disposal system which applies for your company.
Please make sure that the electrical components are disposed of professionally and according
to the legal regulations. Please only throw depleted batteries in the collection boxes in shops or
at municipal waste management companies.
6.4 Disposal through municipal collection facilities
Disposal of used electrical and electronic components
(Applicable in the countries of the European Union and other European countries with a sepa-
rate collecting system for those devices).
The sign on the product or on its packing indicates that the product must not be handled as
common household waste, but that is needs to be disposed of at a central collection point for
recycling. Your contribution to the correct disposal of this product will protect the environment
and the public health. Incorrect disposal constitutes a risk to the environment and public health.
Recycling of material will help reduce the consumption of raw materials. For further information
about the recycling of this product, please consult your District Office, municipal waste collec-
tion station or the shop where you have purchased the product.
This manual suits for next models
1
Table of contents
Other OPTIMUM Maschinen Grinder manuals
