KNECHT HV 203 User manual

Status 02.2022 Version 1.1 | Translation
Operating Instructions
Universal Grinding Arm | Universal Belt-Grinding Unit
HV 203 | HV 262

3
HV 203 Universal Grinding Arm
HV 262 Universal Belt-Grinding Unit
Manufacturer
KNECHT Maschinenbau GmbH
Witschwender Strasse 26
88368 Bergatreute
Germany
Phone [phone]
Fax [phone]
[email protected]
www.knecht.eu
Documents for machine operator
Operating Instructions
Date of issue of the operating instructions
February 2, 2022
Copyright
These operating instructions as well as the operating documents remain the copyright property of KNECHT
Maschinenbau GmbH. They are supplied only to customers and operators of our products and belong to
the machine.
Without our express permission, these documents may neither be duplicated nor made accessible to third
parties, in particular competitor companies.
Operating Instructions

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1. Important notes 7
1.1 Preface to the operating instructions 7
1.2 Warnings and symbols in the operating instructions 7
1.3 Figure and position numbers in the operating instructions 8
2. Safety 9
2.1 Basic safety instructions 9
2.1.1 Observe notes in the operating instructions 9
2.1.2 Obligation on the part of the operator 9
2.1.3 Obligation on the part of the personnel 9
2.1.4 Hazards involved in handling the grinding units 9
2.1.5 Malfunctions 10
2.2 Intended use 10
2.3 Warranty and liability 10
2.4 Safety regulations 11
2.4.1 Organizational measures 11
2.4.2 Protective equipment 11
2.4.3 Informal safety measures 11
2.4.4 Personnel selection, personnel qualification 11
2.4.5 Machine control system 12
2.4.6 Safety measures in normal operation 12
2.4.7 Hazards due to electrical power sources 12
2.4.8 Particular hazard areas 12
2.4.9 Maintenance (servicing, repair) and fault rectification 12
2.4.10 Structural modifications to the grinding units 13
2.4.11 Cleaning the grinding units 13
2.4.12 Lubricants/ oils and greases 13
2.4.13 Relocation of the grinding machine with grinding units 13
3. Description 14
3.1 Intended use of the HV 203 Universal Grinding Arm 14
3.2 HV 203 technical specifications 14
3.3 HV 203 functional description 15
3.4 HV 203 description of the assemblies 16
3.4.1 Mounting head for sickle-shaped knives 16
3.4.2 Spacer disc 17
3.5 Intended use of the HV 262 Universal Belt-Grinding Unit 18
3.6 HV 262 technical specifications 18
3.7 HV 262 functional description 19
3.8 HV 262 description of the assemblies 20
Table of Contents

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4. Transport 21
4.1 Transport aids 21
4.2 Transport damage 21
4.3 Transport to another installation site 21
5. Installation 22
5.1 Selection of qualified personnel 22
5.2 Installation site 22
5.3 Settings 22
5.4 Initial start-up of the grinding units 22
6. HV 203 commissioning 23
6.1 Mounting the HV 203 Universal Grinding Arm 23
7. Operating the HV 203 24
7.1 Grinding linear knives on the grinding wheel 24
7.1.1 Attaching the SP 107 grinding plate 24
7.1.2 Clamping the knife 27
7.1.3 Positioning the knife on the grinding wheel 29
7.1.4 Aligning the knife on the grinding wheel 30
7.1.5 Setting the grinding angle 31
7.1.6 Grinding linear knives (tapered cutting edge) 32
7.1.7 Grinding linear cutter knives (convex cutting edge) 34
7.2 Grinding sickle-shaped knives on the grinding wheel 36
7.2.1 Attaching the SP 107 grinding plate 36
7.2.2 Clamping the knife 41
7.2.3 Positioning the knife on the grinding wheel 42
7.2.4 Setting the grinding angle 43
7.2.5 Grinding sickle-shaped cutter knives (convex cutting edge) 44
8. HV 262 commissioning 46
8.1 Swiveling the HV 262 Universal Belt-Grinding Unit into working position 46
9. Operating the HV 262 48
9.1 Grinding linear cutter knives on the wet-grinding belt (convex cutting edge) 48
9.1.1 Release the carriage lock 48
9.1.2 Inserting the function disc 48
Table of Contents

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9.1.3 Setting the grinding angle 49
9.1.4 Mounting the grinding plate 50
9.1.5 Clamping cutter knives 51
9.1.6 Basic function of the HV 262 locking mechanism 52
9.1.7 Bringing the HV 262 Universal Belt-Grinding Unit into adjustment position 53
9.1.8 Aligning the cutter knife on the wet-grinding belt 54
9.1.9 Grinding cutter knives 55
9.1.10 Deburring and polishing cutter knives 57
9.2 Grinding sickle-shaped cutter knives on the wet-grinding belt
(convex cutting edge) 58
9.2.1 Locking the carriage 58
9.2.2 Inserting the function disc 58
9.2.3 Setting the grinding angle 58
9.2.4 Mounting the grinding plate 59
9.2.5 Adjusting the swivel range of the grinding plate 60
9.2.6 Enlarging the grinding radius 60
9.2.7 Clamping cutter knives 61
9.2.8 Basic function of the HV 262 locking mechanism 62
9.2.9 Bringing the HV 262 Universal Belt-Grinding Unit into adjustment position 63
9.2.10 Grinding cutter knives 64
9.2.11 Deburring and polishing cutter knives 66
10. Care and maintenance 67
10.1 Cleaning 67
10.1.1 Lubricant table 67
10.2 Maintenance plan (one-shift operation) 67
11. Disassembly and disposal 68
11.1 Disassembly 68
11.2 Disposal 68
12. Service, spare parts and accessories 69
12.1 Postal address 69
12.2 Service 69
12.3 Spare parts 69
13. Appendix 70
13.1 EU Declaration of Conformity 70
Table of Contents

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1.1 Preface to the operating instructions
These operating instructions are intended to make it easy to learn how to use the grinding units
and to properly utilize their features.
These operating instructions contain important notes on how to operate the grinding units safely,
properly, and efficiently. Your attention helps to avoid hazards, reduce repair costs and down-
times, and to increase the reliability and service life of the grinding units.
The operating instructions must always be stored in the location that the grinding units are used.
The operating instructions must be read and applied by every person who is assigned to work on
the grinding units, e. g.:
• transport, installation, commissioning
• operation, including troubleshooting in the work sequence, as well as
• maintenance (servicing, repair).
Recognized technical standards for safe and professional work must be observed in addition to
these operating instructions and the binding accident prevention regulations applicable in the
country of use and at the place of use.
1.2 Warnings and symbols in the operating instructions
The operating instructions use the following symbols/designations that must be followed:
The hazard triangle with the signal word “CAUTION” serves as a work
safety notice for all work for which there is a risk of personal injury or
death.
In these cases, work should be done with special attention and care.
ATTENTION
”ATTENTION” is located in areas that require special care to prevent
damage to and/or destruction of the grinding units or their surroundings.
NOTE ”NOTICE” refers to user tips and especially useful information.
1. Important notes
CAUTION

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1.3 Figure and position numbers in the operating instructions
If the text makes a reference to a machine component illustrated in a picture, the figure and
position number will be given in brackets.
Example: (7-9/1) means Figure number 7-9, position 1.
Clamp the knife (7-9/1) onto the grinding plate
(7-9/2).
1. Important notes
Figure 7-9 Clamping the knife onto the grind-
ing plate
1
2

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2.1 Basic safety instructions
2.1.1 Observe notes in the operating instructions
The basic prerequisite for safe use and trouble-free operation of these grinding units is knowledge
of the basic safety instructions and safety regulations.
• These operating instructions contain important notes on how to operate the grinding units
safely.
• All persons carrying out work on the grinding units must follow these operating instructions, in
particular the safety notices.
• In addition, the rules and regulations regarding accident prevention at the place of use are to be
observed.
2.1.2 Obligation on the part of the operator
The operator is obliged to allow only those persons to work on the grinding units, who
• are familiar with the basic regulations on work safety and accident prevention and have been
trained and instructed in the handling of the grinding units,
• have read and understood the operating instructions, in particular the section entitled “Safety”
and the warning notes, and have provided signed confirmation of this.
The safety-awareness of the personnel at work will be monitored at regular intervals.
2.1.3 Obligation on the part of the personnel
All personnel working on the grinding units shall be obliged, before starting work, to
• observe basic work safety and accident prevention regulations,
• read the operating instructions, particularly the section entitled “Safety” and the warning notes,
and provide signed confirmation that they have understood them.
2.1.4 Hazards involved in handling the grinding units
The grinding units have been built to the latest technological standards and the acknowledged
rules of technical safety. In spite of that, its use presents inherent risks which could result in bodily
harm or even death of the user or third persons, or impairment of the grinding units or other
property.
The grinding units are only to be used
• for its intended purpose
• in faultless condition with regard to safety-related aspects.
Malfunctions that may impair safety are to be eliminated immediately.
2. Safety

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2.1.5 Malfunctions
If safety-relevant malfunctions occur with the grinding units, or if the operating behavior indicates
that such malfunctions may have occurred, the grinding units must be stopped immediately until
the malfunction has been found and eliminated.
Malfunctions may only be eliminated by authorized qualified personnel.
2.2 Intended use
The HV 203 and HV 262 grinding units are exclusively intended for grinding linear and sickle-
shaped flat machine knives (e.g. cutter knives). They are suitable for mounting on the KNECHT
grinding machines of the S 200 model series.
All knives must be clamped onto the corresponding holding fixtures for grinding. First, check
whether the holding fixture matches the knife to be ground. The knife can only be ground if this
is the case.
Any other use is considered as not intended. KNECHT Maschinenbau GmbH is not liable for any
damage resulting from this. The user alone bears this risk.
Intended use also includes observing all instructions in the operating manual.
ATTENTION The grinding unit is being used improperly,
if, e.g.
• it is installed onto grinding machines other
than the KNECHT S 200 series,
• the knife has been clamped incorrectly,
• the knife is ground without being clamped,
• protective equipment is not properly
attached.
2.3 Warranty and liability
Warranty and liability claims in case of personal injury or property damage are excluded if such
damage is attributable to one or more of the following causes:
• improper use of the grinding units,
• improper transport, commissioning, operation, and maintenance of the grinding units,
• operating the grinding units with defective safety devices, or improperly installed safety and
protective devices,
2. Safety

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• ignoring the operating instructions with regard to transportation, commissioning, operation,
maintenance and repair of the grinding units,
• unauthorized structural modifications to the grinding units,
• inadequate monitoring of parts subject to wear and tear as well as
• use of non-approved spare and wear parts.
Only use original spare and wear parts. In the case of parts purchased from other manufacturers,
it cannot be guaranteed that they have been designed and manufactured in accordance with the
stress and safety requirements.
2.4 Safety regulations
2.4.1 Organizational measures
All existing safety devices must be checked regularly.
The intervals for recurring maintenance work prescribed or specified in the operating instructions
must be observed!
2.4.2 Protective equipment
Before commissioning the grinding units, ensure that all protective devices are properly mounted
and in functional condition.
Protective devices may be removed only after the grinding units have been stopped and secured
against accidental restart.
When delivering spare parts, the protective devices must be attached by the operator as stipulated.
2.4.3 Informal safety measures
The operating instructions must be permanently available in the place that the grinding units are
used. In addition to the operating instructions, the generally applicable as well as locally relevant
accident prevention regulations must also be made available and observed.
All safety alert symbols and danger warnings on the grinding units must be complete and clearly
legible.
2.4.4 Personnel selection, personnel qualification
Only trained and instructed personnel may work on the grinding units. Observe the legally
permitted minimum age!
The responsibilities of personnel with respect to commissioning, operation, maintenance, and
repair must be clearly specified.
2. Safety

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Personnel still in the training or instruction phase are only permitted to work on the grinding units
under the constant supervision of an experienced person!
2.4.5 Machine control system
Only trained and instructed personnel are permitted to switch on the machine.
2.4.6 Safety measures in normal operation
Do not operate the machine in any unsafe manner. Only operate the grinding units if all safety
devices are installed and fully functional.
At least once per shift (or per day), check the grinding units for externally visible damage and
proper functioning of the safety devices.
Immediately report any changes present (including those of the operating behavior) to the respon-
sible office or person. If necessary, immediately shut down the grinding units and secure them
against restart.
Before you switch on the grinding machine, ensure that no one can be injured by the start-up of
the machine.
In the event of a malfunction, immediately stop the grinding machine and secure it against
restart. Rectify malfunctions immediately.
2.4.7 Hazards due to electrical power sources
Work on electrical systems or operating materials may only be performed by a qualified
electrician, in accordance with electrical regulations.
Defects, such as damaged cables, cable connections, etc. must be immediately rectified by an
authorized specialist.
2.4.8 Particular hazard areas
In the area of the grinding wheel, wet-grinding belt and finned brush, there is a hazard of
pinching and being drawn in, e.g. clothing, fingers and hair. Wear suitable personal protective
equipment.
2.4.9 Maintenance (servicing, repair) and fault rectification
Maintenance work is to be carried out on schedule by trained personnel. Inform operating
personnel before beginning repair work. Designate a supervisor responsible for this.
For all service work, the grinding machine is to be disconnected from the current supply and
secured against accidental restart.
Remove power plug. Cordon off the repair area as far as it is required.
2. Safety

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After completing maintenance work and rectifying any faults, install all safety devices
and verify that they are fully functional.
2.4.10 Structural modifications to the grinding units
Modifications, retrofits or rebuilds of the grinding units are not allowed without the permission of
the manufacturer. This also applies for installation and configuration of the safety devices.
Any conversion work requires the written permission from KNECHT Maschinenbau GmbH.
Immediately replace any machine parts that are not in a serviceable state.
Use only original replacement and wear parts. When using external parts, it cannot be guaranteed
that they are constructed and manufactured to be suitable and safe.
2.4.11 Cleaning the grinding units
Properly handle any cleaning agents and materials used and dispose of them in an
environmentally-friendly manner.
Dispose of the wear parts and replacement parts in a safe and environmentally-friendly manner.
2.4.12 Lubricants/oils and greases
When using oils and greases, follow the safety regulations applicable to the product. Comply with
the special regulations for the foodstuffs sector.
2.4.13 Relocation of the grinding machine with grinding units
Disconnect the grinding machine from any external current supply, even if adjusting its position
slightly. Before restarting the grinding machine, properly connect it to the power supply.
When loading or unloading, only use suspension devices and load suspension devices with
sufficient load-bearing capacity. Designate a qualified instructor for the lifting operation.
Ensure that only persons authorized to carry out this work are located where the machine is
unloaded and installed.
Use only a suitable transport vehicle with sufficient carrying capacity. Secure loads safely. See also
the operating instructions for the S 200 Universal Wet-Sharpening Machine (chapter “4. Trans-
port”). When recommissioning, do so only in accordance with the operating instructions.
2. Safety

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3. Description
3.1 Intended use of the HV 203 Universal Grinding Arm
The HV 203 Universal Grinding Arm is used to grind sickle-shaped and linear cutter knives as well
as cutting tools with linear cutting edges (e.g. carcass splitting knives) on the cup grinding wheel.
It can be used to grind precise angles with simple operation and minimal effort.
The device is used on the KNECHT grinding machines of the S 200 model series.
3.2 HV 203 technical specifications
Height ��������������������������������������������������������������������� 200 mm
Width ���������������������������������������������������������������������� 725 mm
Depth ���������������������������������������������������������������������� 140 mm
Weight ����������������������������������������������������������������������� 17 kg
Traverse path (maximum cutting edge length) ������������������������������������ 380 mm
Maximum grinding radius ����������������������������������������������������� 460 mm
Minimum grinding radius ������������������������������������������������������ 80 mm
ATTENTION The grinding radius is not the blade radius.
The grinding radius of a knife can be found
on the grinding plate suitable for this knife,
e.g. SR 300.
Figure 3-1 HV 203 top view, dimensions in mm
140 mm
725 mm

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3. Description
ATTENTION The grinding plate with corresponding knife
must be mounted in the correct position on
the universal grinding arm. SR 80 – 335 front
and SR 200 – 460 rear.
The universal grinding arm is labeled
accordingly.
3.3 HV 203 functional description
The HV 203 Universal Grinding Arm can be used to grind knives with linear cutting edges up to
a cutting edge length of 380 mm. For this purpose, the clamping of the guideway housing is
opened and the fixed mounting head is fitted. For grinding, the cutting tool is moved linearly over
the grinding wheel.
Sickle-shaped knives up to a grinding radius of 460 mm can also be ground. For this purpose,
lock the guideway housing and mount the rotatable mounting head. To grind, the cutting tool is
moved concentrically over the grinding wheel.
Cutter knives are pre-sharpened on the Universal Grinding Arm and, if necessary, receive a repair
grinding.
Cutting tools with tapered cutting edges are finished ground here.

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3. Description
3.4 HV 203 description of the assemblies
1 Hand wheel to set grinding angle
2 Angle scale
3 Fixed mounting head with clamping lever (linear knives)
4 Cup grinding wheel with guard
3.4.1 Mounting head for sickle-shaped knives
The rotatable mounting head (3-3/1) is used to
grind sickle-shaped knives on the cup grinding
wheel.
Figure 3-2 HV 203 Universal Grinding Arm
4
3
1
2
Figure 3-3 Rotatable mounting head
1

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3.4.2 Spacer disc
The spacer disc (3-4/1) is used when grinding
sickle-shaped knives with a grinding radius bigger
than SR 200 mm on the HV 203.
The spacer disc is placed on the locating bolt (see
chapter 7.2.1, Figure 7-33). Then the grinding
plate is mounted.
Figure 3-4 Spacer disc
1
3. Description

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3. Description
3.5 Intended use of the HV 262 Universal Belt-Grinding Unit
The HV 262 Universal Belt-Grinding Unit is used to grind sickle-shaped and linear cutter knives on
the wet-grinding belt.
It can be used to grind precise angles with simple operation and minimal effort.
The device is used on the KNECHT grinding machines of the S 200 model series.
3.6 HV 262 technical specifications
Height �������������������������������������������������������������� approx. 650 mm
Width ��������������������������������������������������������������� approx. 550 mm
Depth ��������������������������������������������������������������� approx. 760 mm
Weight ����������������������������������������������������������������������� 18 kg
Traverse path (maximum cutting edge length) ������������������������������������ 260 mm
Maximum grinding radius ����������������������������������������������������� 440 mm
Minimum grinding radius ������������������������������������������������������ 55 mm
Poss. knife sizes* ��������������������������������������������������������� 45-500 ltr.
*) The grinding radius must be within the specified range.
Figure 3-5 HV 262 side and top view, dimensions in mm
760 mm
550 mm
650 mm
760 mm
760 mm
550 mm
650 mm
760 mm

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3.7 HV 262 functional description
The HV 262 Universal Belt-Grinding Unit can be used to grind knives with linear cutting edges
up to a cutting edge length of 260 mm.
For this purpose, swivel the locking fork backward – the carriage can be moved linearly. The
function disc is mounted in the non-rotatable position.
To grind, the cutting tool is moved linearly over the wet-grinding belt.
Sickle-shaped knives up to a grinding radius of 440 mm can also be ground. For this purpose,
swivel the locking fork forward – the carriage is blocked. The function disc is mounted in the
rotatable position.
To grind, the cutting tool is moved concentrically over the wet-grinding belt.
The HV 262 grinds cutter knives with normal wear.
3. Description

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3.8 HV 262 description of the assemblies
1 Grinding lever
2 Function disc
3 Spacer discs for adjusting grinding angle
4 Locking fork
5 Star handles for increasing grinding radius
6 Grinding plate
7 Cutter knife
8 Locking lever
9 Hand wheel
10 Locking disc star handle
11 Locking disc
Figure 3-6 HV 262 Universal Belt-Grinding Unit
9
7
6
10
1
2
3
4
5
11
8
3. Description

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4.1 Transport aids
To transport the grinding units, use only adequately dimensioned transport aids.
4.2 Transport damage
If damage is detected after unloading and/or when accepting delivery, notify KNECHT Maschinen-
bau GmbH and the forwarding agent immediately. Promptly refer to an independent specialist as
needed.
Remove the packaging and shipping straps. Dispose of packaging in an environment-friendly
manner.
4.3 Transport to another installation site
For transport to another installation site, make sure that the space requirement is observed
(see chapters 3.2 and 3.6).
Grinding units must be sufficiently secured during transport.
4. Transport
When transporting, observe the local applicable safety
and accident prevention regulations.
CAUTION