KNECHT E 50 User manual

Status 04.2018 ■Version 2.3 | Translation
E 50
Fully Automatic Hand Knife Sharpening Machine
Operating Instructions

3
Fully Automatic Hand Knife Sharpening Machine E 50
Manufacturer
KNECHT Maschinenbau GmbH
Witschwender Straße 26
88368 Bergatreute
Germany
Phone [phone]
Fax [phone]
[email protected]
www.knecht.eu
Documents for the machine operator
Operating Instructions
Date of issue of the operating instructions
April 09, 2018
Copyright
The copyright for these operating instructions as well as other documents for the machine operator is held
by KNECHT Maschinenbau GmbH. These documents will be delivered only to our customers and to opera-
tors of our products and are a part of the machine.
These documents may neither be reproduced, nor made accessible to third parties, including rival firms.
Operating Instructions

4
1. Important notes 7
1.1 Foreword 7
1.2 Warnings and symbols in the operating instructions 7
1.3 Warning plates and their meaning 8
1.3.1 Warning and prohibition signs on/in the sharpening machine 8
1.3.2 General mandatory signs 8
1.4 Rating plate and machine serial number 9
1.5 Figure and item numbers in the operating instructions 10
2. Safety 11
2.1 Basic safety instructions 11
2.1.1 Observe notes in the operating instructions 11
2.1.2 Operator's duty 11
2.1.3 Obligations on the part of the personnel 11
2.1.4 Hazards associated with the handling of the machine 11
2.1.5 Malfunctions 12
2.2 Proper use 12
2.3 Warranty and liability 12
2.4 Safety regulations 13
2.4.1 Organisational measures 13
2.4.2 Protective devices 13
2.4.3 Informal safety measures 13
2.4.4 Selection and qualifications of the personnel 13
2.4.5 Machine control system 14
2.4.6 Safety measures in normal operation 14
2.4.7 Dangers due to electrical power 14
2.4.8 Particular hazard areas 14
2.4.9 Servicing (maintenance, repair) and fault rectification 15
2.4.10 Structural alterations to the sharpening machine 15
2.4.11 Cleaning the sharpening machine 15
2.4.12 Oils and greases 15
2.4.13 Relocation of the sharpening machine 15
3. Description 17
3.1 Use as intended 17
3.2 Technical specifications 17
3.3 Functional description 18
3.4 Description of the assemblies 19
3.4.1 Control panel 21
3.4.2 Switching the sharpening machine on/ off 21
3.4.3 Layout of the user interface (main screen) 22
Table of Contents

5
4. Transport 24
4.1 Transport aids 24
4.2 Transport damage 24
4.3 Transport to another installation site 24
5. Installation 26
5.1 Selection of qualified personnel 26
5.2 Installation site 26
5.3 Supply connections 26
5.4 Settings 26
5.5 Initial commissioning of the sharpening machine 27
6. Commissioning 28
7. Operation 30
7.1 Grinding of hand knives 30
7.2 Changing the wet-grinding belt 32
7.3 Changing the polishing / deburring brushes and polishing paste 33
7.4 Adjusting the polishing / deburring brushes 34
7.5 Changing the test medium for the sharpness testing device 35
7.6 Changing the coolant 37
8. Control system 38
8.1 Manual Functions 38
8.2 Changing the language 39
8.3 Loading product data 41
8.4 Modifying product data 42
8.5 Setting up an internet connection 43
9. Care and maintenance 44
9.1 Lubrication 44
9.1.1 Lubrication schedule and lubricant table (single shift operation) 45
9.2 Cleaning 46
9.3 Maintenance Plan 49
Table of Contents

6
10. Malfunctions 50
10.1 Faults 50
11. Disassembly and disposal 51
11.1 Disassembly 51
11.2 Disposal 51
12. Service, spare parts and accessories 52
12.1 Postal Address 52
12.2 Service 52
12.3 Spare parts 52
12.4 Accessories 53
12.4.1 Grinding abrasives used 53
13. Appendix 54
13.1 EC Declaration of Conformity 54
Table of Contents

7
1.1 Foreword
These operating instructions are designed to make it easier to get to know the Fully Automatic
Hand Knife Sharpening Machine, referred to in this document as sharpening machine, and to use
it properly for the intended purpose.
The operating instructions contain important information on how to operate the sharpening
machine safely, properly and cost-effectively. Observance of these instructions helps to avoid
dangers, repair costs and downtimes, and increases the reliability and service life of the sharpen-
ing machine.
The operating instructions must always be accessible at the place of use of the sharpening
machine.
The operating instructions must be read and used by all persons entrusted with working on the
sharpening machine, e.g. those entrusted with
• Transport, installation, commissioning
• Operation, including troubleshooting in the process flow, as well as
• Servicing (maintenance, repair).
In addition to the operating instructions and the binding accident prevention regulations
applicable in the country and place of use of the machine, the generally acknowledged rules of
technology with regard to safe and professional work practices are to be observed.
1.2 Warnings and symbols in the operating instructions
Heeding the following safety alert symbols/designations used in the operating instructions is
absolutely necessary:
The hazard triangle with the signal word “CAUTION” is used as a work
safety indication for all work which could result in death or physical injury.
Special care and caution must be taken when carrying out such jobs.
ATTENTION
The signal word “ATTENTION” is used to call attention to hazards which
could result in damage and/or destruction of the sharpening machine or its
environment if special attention is not paid while carrying out particular
jobs.
NOTICE The signal word “NOTE” calls attention to tips on use and useful
information.
1. Important notes
CAUTION

8
1.3 Warning plates and their meaning
1.3.1 Warning and prohibition signs on/ in the sharpening machine
The following warning and prohibition signs have been affixed to the sharpening machine:
CAUTION! DANGEROUS ELECTRICAL VOLTAGE (warning
notice on the switch cabinet)
On being connected to the voltage supply (3x 400 V), the sharp-
ening machine becomes electrically live and touching its live parts
directly could be life-threatening.
Live machine parts may be opened only by authorised, trained
personnel.
The sharpening machine must be separated from the mains supply
before carrying out servicing, maintenance and repair jobs on it.
1.3.2 General mandatory signs
The following general mandatory signs must be observed:
CAUTION! RISK OF INJURY FROM ABRASIVE PARTICLES
Safety glasses must be worn when carrying out general
maintenance and cleaning activities.
CAUTION! RISK OF INJURY ON THE BLADE
Work on the sharpening machine involves the sharpening of knives
which could cause serious cut injuries due to their sharpness.
Protective gloves must be worn when clamping and unclamping
the knives.
Be careful when transporting blades. Use the protective devices
provided by the knife manufacturer. Wear protective gloves and
apron.
1. Important notes

9
1.4 Rating plate and machine serial number
The rating plate is located on the right side of the
machine, namely on the switch cabinet
.
The machine serial number can be found on the
rating plate and on the Z axis of the knife gripper
arm.
1. Important notes
Figure 1-1 Rating plate
Figure 1-2 Machine serial number

10
1.5 Figure and item numbers in the operating instructions
If a component of the machine that is shown in a figure is described in the text, it is followed by
a figure or item number in brackets.
Example: (7-5/1) denotes figure number 7-5, item 1.
To replace the polishing pastes, loosen the four star knobs
(7-4/3) on the side and remove the cover (7-5/1).
The used-up paste can now be replaced with new paste.
Mount the cover again and tighten the four star knobs.
1. Important notes
Figure 7-5 Changing the polishing paste
1

11
2.1 Basic safety instructions
2.1.1 Observe notes in the operating instructions
The basic prerequisite for the safe handling and uninterrupted operation of this sharpening
machine is knowledge of the basic safety instructions and regulations.
• These operating instructions contain important notes on how to operate the sharpening
machine safely.
• All persons carrying out work on the sharpening machine must follow these operating
instructions, in particular the safety notices.
• In addition, the accident prevention rules and regulations applicable at the place of use of the
machine must also be observed.
2.1.2 Operator's duty
The operator is obliged to allow only those persons to work on the sharpening machine, who
• are familiar with the basic occupational safety and accident prevention regulations and have
been trained and instructed in the handling of the sharpening machine,
• have read the operating instructions, particularly the “Safety” section, and have read and
understood the warning notes. They have given a signed confirmation of this in writing.
It is also checked at regular intervals as to whether the worker is fulfilling his employee obligation
to observe safety at work.
2.1.3 Obligations on the part of the personnel
All the personnel working on the sharpening machine shall be obliged to
• observe the basic occupational safety and accident prevention regulations,
• read the operating instructions, particularly the “Safety” chapter, and the warning notes. They
shall give a signed confirmation of this in writing.
2.1.4 Hazards associated with the handling of the machine
The sharpening machine has been built to the latest technological standards and the acknowl-
edged 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 parties, or impairment of the sharpening machine
or other property.
The sharpening machine may be used only:
• for the intended purpose, and
• in faultless condition with regard to safety-relevant aspects.
2. Safety

12
2. Safety
Faults that could impair safety must be eliminated immediately.
2.1.5 Malfunctions
If safety-relevant malfunctions occur in the sharpening machine, or if the processing behaviour
indicates that such malfunctions may have occurred, the sharpening machine must be stopped
immediately and until such time as the malfunction has been found and eliminated.
Allow only authorised technical staff to eliminate the malfunctions.
2.2 Proper use
The sharpening machine is only meant for grinding, deburring and polishing of hand knives
(70-270 mm long). All the knives must be inserted in the designated knife magazine.
Any other use is considered improper use. KNECHT Maschinenbau GmbH does not assume any
liability for damages resulting from improper use. The user alone bears the risk in such cases.
Use as intended includes the observance of all the instructions in the operating instructions.
The sharpening machine is being used improperly, if, e.g.,
• devices are not fastened properly.
• knives are sharpened/polished in opposite direction of the cutting edge on the grinding belt or
the polishing brush.
• work pieces other than hand knives are ground.
2.3 Warranty and liability
Warranty and liability claims in case of personal injuries or property damage are excluded if such
damage is attributable to one or more of the following causes:
• improper use of the sharpening machine,
• improper transportation, commissioning, operation and maintenance of the sharpening
machine,
• operating the sharpening machine with defective safety devices, or improperly attached or
malfunctioning safety and protective equipment,
• ignoring the operating instructions with regard to transportation, commissioning, operation,
maintenance and repair of the sharpening machine,
• unauthorised structural alterations to the sharpening machine,
• unauthorised modification, e.g. of the drive conditions (power and speed), and

13
• insufficient monitoring of machine parts that are exposed to wear.
• use of unapproved replacement and wear parts.
Use only original replacement and wear parts. If parts are purchased from external suppliers, it
cannot be guaranteed that they will be constructed and manufactured to withstand the stresses
and provide the level of safety required for operating the sharpening machine.
2.4 Safety regulations
2.4.1 Organisational measures
All the existent safety devices must be checked regularly.
Observe prescribed intervals for recurring maintenance work or as specified in the operating
instructions.
2.4.2 Protective devices
Before commissioning the sharpening machine, it must be ensured that all protective equipment
is properly mounted and in functional condition.
Protective equipment may be removed only after the machine has stopped and has been secured
against accidental restarting of the sharpening machine.
If sub-components are supplied, the protective equipment must be correctly attached by the
operator according to the instructions.
2.4.3 Informal safety measures
The operating instructions must be permanently available at the place of use of the sharpening
machine. In addition to the operating instructions, the generally applicable as well as the locally
relevant accident prevention regulations must also be made available and observed.
All the safety alert symbols and danger warnings on the sharpening machine must be complete
and clearly legible.
2.4.4 Selection and qualifications of the personnel
Only trained and instructed personnel may work on the sharpening machine. The minimum legal
age for employment must be observed.
The responsibilities of the personnel must be clearly assigned, i.e. commissioning, operation,
maintenance and repair, etc.
Personnel still in the training or instruction phase may only be allowed to work on the sharpening
machine under the permanent supervision of an experienced person.
2. Safety

14
2.4.5 Machine control system
Do not make any changes to the software program under any circumstances. Parameters that the
operator can set himself are excluded from this prohibition (e.g. setting the number of cycles).
Only trained and instructed personnel is allowed to switch on the machine.
2.4.6 Safety measures in normal operation
Refrain from any method of working which may pose a risk to safety. Only operate the sharpen-
ing machine if all the safety devices are installed and fully functional.
Check the sharpening machine for external signs of damage and correct operation of the safety
devices at least once every shift.
Report any changes (including operating behaviour) immediately to the competent depart-
ment/person. Where required, shut down the sharpening machine immediately and secure
against restarting.
Before switching on the sharpening machine, ensure that no one is exposed to any risk from the
start-up of the machine.
If there are any functional faults, immediately stop the machine and secure against restarting.
Have the faults eliminated immediately.
2.4.7 Dangers due to electrical power
The switch cabinet must always remain secured against access. Only authorised personnel must
be allowed to access it.
Work on electrical units or operating materials may only be performed by a qualified electrician in
accordance with electrical rules.
Defects, such as a damaged cable, cable connections, etc., must be immediately rectified by an
authorised specialist.
Cables marked in yellow are not electrically live when the main switch is
in off position.
CAUTION
2.4.8 Particular hazard areas
In the area of the grinding wheels, polishing brushes and knife gripper arm, there is a hazard of
pinching and being drawn in (e.g. clothing, fingers and hair). Suitable personal protective equip-
ment must be worn.
2. Safety

15
2.4.9 Servicing (maintenance, repair) and fault rectification
Maintenance work is to be carried out on schedule by trained personnel. Inform operating
personnel before starting repair work. The responsible supervisor is to be named. For all service
work, the sharpening machine is to be disconnected from the power supply and secured against
accidental restarting. Pull out the mains plug. Cordon off the servicing area, as far as possible.
After completion of the maintenance work and fault rectification, install all the safety devices and
check whether they are fully functional.
2.4.10 Structural alterations to the sharpening machine
Modifications, retrofitting or rebuilds of the sharpening machine are not allowed without the per-
mission of the manufacturer. This also applies to the installation and adjustment of safety devices.
No alterations may be carried out without prior written permission from KNECHT Maschinenbau
GmbH.
Immediately replace machine parts which are not in perfect condition.
Use only original replacement and wear parts. If parts are purchased from external suppliers, it
cannot be guaranteed that they will be constructed and manufactured to withstand the stresses
and provide the level of safety required for operating the sharpening machine.
2.4.11 Cleaning the sharpening machine
Cleaning agents and materials used must be handled properly and disposed of in an environ-
mentally friendly way.
Ensure that wear and replacement parts are disposed of in a safe and environmentally friendly
way.
2.4.12 Oils and greases
When handling oils and greases, follow the safety instructions for the product. Observe special
instructions for the food industry.
2.4.13 Relocation of the sharpening machine
Even when moving the machine a short distance from its site, disconnect it from all external
power supply sources. Before restarting the machine, connect it properly to the current supply.
When loading or unloading, only use hoisting and load lifting equipment with sufficient
load-bearing capacity. Appoint a qualified banksman (signaller) for the lifting process.
No persons other than those entrusted with this work may be present in the loading and
installation area.
2. Safety

16
Only lift the sharpening machine correctly with a suspension device in accordance with the
operating instructions (attachment points for load suspension devices, etc.). Only use suitable
transport vehicles with sufficient load-bearing capacity. Attach the load securely. Use suitable
attachment points. When putting in operation again, proceed only as instructed in the operating
instructions.
2. Safety

17
3. Description
3.1 Use as intended
The hand knife sharpening machine E 50 grinds, deburrs and polishes hand knives with a length
of 70-270 mm in a fully automatic process.
3.2 Technical specifications
Height (fully extended) ����������������������������������������������� approx. 3000 mm
Width ������������������������������������������������������������� approx. 2389 mm
Depth ������������������������������������������������������������� approx. 1391 mm
Required space (WxDxH) ������������������������� approx. 3200 mm x 3000 mm x 3000 mm
Permissible ambient temperature ���������������������������������������������� 10-35°C
Permissible humidity ��������������������������������������������������������� 20 - 80%
Weight ���������������������������������������������������������������������� 800 kg
Current supply* ������������������������������������������������������������ 3x 400 V
Mains frequency* �������������������������������������������������������������� 50 Hz
Power* ���������������������������������������������������������������������� 8 kW
Energy consumption* ����������������������������������������������������������� 11 A
Back-up fuse ������������������������������������������������������������������� 25 A
Control voltage �������������������������������������������������������������� 24 V DC
Measured A-evaluated emission sound pressure level ����������������������������� 72 dB (A)
at work station LpA**
Air consumption �������������������������������������������������������� max. 50 l/min
Speed of polishing wheel ������������������������������������������������� 1500 1/min
Speed of grinding belt ���������������������������������������������������� 1500 1/min
Maximum knife length �������������������������������������������������������� 270 mm
Recommended extraction capacity if air purifier is included ex-factory ��������������� 700m³/h
*) This data may vary depending on the electrical power supply
**) Dual number noise emission information according to EN ISO 4871 (measurement uncertainty KpA. 3 dB(A)).
Emission sound pressure level according to EN ISO 11201.
The knife used for grinding was a hand knife (Egogrip) by Dick.

18
Figure 3-1 Dimensions in mm
3. Description
3.3 Functional description
The E 50 Hand Knife Sharpening Machine can be used to grind, deburr and polish hand knives in
a fully automatic process.
The hand knives are inserted in the knife magazine. On machine start, the knife gripper arm
fetches the first knife, measures and sharpens it at the grinding or polishing stations. At the end
of the grinding process, the knife is placed back in the magazine and the next one is machined.
In case of emergency, the Hand Knife Sharpening Machine can immediately be stopped by press-
ing the “Emergency Stop” button.
1391 mm
2389 mm
2191 mm
1391 mm
2389 mm
2191 mm
GoC GoC

19
3. Description
3.4 Description of the assemblies
1 Safety doors
2 Cross table
3 Knife gripper arm
4 Sharpness testing device ANAGO (optional)
5 Deburring unit
6 Suction unit
7 Dirt trap
8 Control unit and switch cabinet
9 Grinding unit
10 Polishing unit
11 Knife magazine
12 Magazine trolley
Figure 3-2 General view of the sharpening machine
2
1
3
5
4
6
7
13
14
11
12
8
9
10
13 Water basin
14 Adjustable machine feet

20
3. Description
1 Knife gripper arm
2 Sharpness testing device ANAGO (optional)
3 Polishing brushes
4 Deburring brushes
5 Suction
6 Measuring device
7 Flow gauge
8 Wet-grinding belt
9 Scrubber
10 Coolant tap
Figure 3-3 Interior
4
5
3
10
1
2
8
9
7
6

21
3.4.1 Control panel
1 Touch panel
2 “Emergency Stop” button
3 “Control On” button: Activates the con-
trols (button starts flashing)
4 “Start/Stop” button: Starts/stops the
grinding program
5 “Coolant On/Off” button: Switches the
coolant pump on or off (for cleaning)
6 “Setting mode” key switch: Position “1”
for setting mode, Position “0” for auto-
matic mode
7 Main switch ON/OFF
8 USB port
3.4.2 Switching the sharpening machine on /off
Turning the main switch from “0” to “I” switches
on the sharpening machine.
Turning the main switch from “I” to “0” switches
off the sharpening machine.
3. Description
Figure 3-4 Control panel
Figure 3-5 Main switch
1
2
7
8
3 4 5 6