Slicer Knife Grinding Machine - knecht.usSlicer Knife Grinding Machine ... The grinding machine has been built to the latest technological standards and the acknowledged rules of technical

Slicer Knife Grinding Machine

Status 07.2016 ■ Version 1.2 | Translation

A 950

Operating Instructions

3

Slicer Knife Grinding Machine A 950

Manufacturer

Knecht Maschinenbau GmbHWitschwender Straße 2688368 BergatreuteGermany

Phone +49-7527-928-0Fax +49-7527-928-32

[email protected]

Documents for the machine operator


Date of issue of the operating instructions

26 July 2016

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 operators 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.


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1. Important notes 7

1.1 Foreword 71.2 Warnings and symbols in the operating instructions 71.3 Warning labels on the grinding machine and their meanings 81.4 Rating plate and machine serial number 91.5 Figure and item numbers in the operating instructions 9

2. Safety 10

2.1 Basic safety instructions 102.1.1 Observe notes in the operating instructions 102.1.2 Operator's duty 102.1.3 Obligations on the part of the personnel 102.1.4 Hazards associated with the handling of the machine 102.1.5 Malfunctions 112.2 Use as intended 112.3 Warranty and liability 112.4 Safety regulations 122.4.1 Organisational measures 122.4.2 Protective equipment 122.4.3 Informal safety measures 122.4.4 Selection and qualifications of the personnel 122.4.5 Machine control system 132.4.6 Safety measures in normal operation 132.4.7 Dangers due to electrical power 132.4.8 Particular hazard areas 132.4.9 Servicing (maintenance, repair) and fault rectification 142.4.10 Structural alterations to the grinding machine 142.4.11 Cleaning the grinding machine 142.4.12 Oils and greases 142.4.13 Relocation of the grinding machine 14

3. Description 16

3.1 Use as intended 163.2 Technical specifications 163.3 Functional description 173.4 Description of the assemblies 18

4. Transport 21

4.1 Transport aids 214.2 Transport damage 214.3 Transportation to another installation site 21

Table of Contents

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5. Installation 22

5.1 Selection of qualified personnel 225.2 Installation site 225.3 Supply connections 225.4 Settings 235.5 Initial commissioning of the grinding machine 23

6. Commissioning 24

7. Operation 26

7.1 Grinding of knives 267.1.1 Grinding the slicer knife without suspension attachment 297.1.2 Grinding the slicer knife with suspension attachment 317.1.3 Grinding of circular knives 337.1.4 Set the knife to the centre of the disk 357.2 Grinding multiple knives (optional) 367.3 Control Panel 387.3.1 Changing the number of cycles and (optionally) the grinding angle 387.3.2 Example of manual menu 397.3.3 Structure of language control 417.3.4 Structure of the manual menu 427.4 Parameters 437.4.1 Parameters in general 437.4.2 Parameters for cam disk 457.4.3 Parameters for drives 467.4.4 Parameters for adjustments / settings 477.5 Diagnostics 487.5.1 Status display inputs / outputs 487.5.2 Diagnostic status 497.6 Dressing the grinding wheel 507.7 Changing the grinding wheel 517.8 Setting the grinding angle 537.8.1 Manual angle setting 537.8.2 Angle setting via display (optional) 537.9 Angle adjustment of the sharpening wheel 54

8. Care and maintenance 55

8.1 Coolant 558.2 Lubricating the cross table 558.3 Cleaning the grinding machine 568.4 Other lubrication points 56

Table of Contents

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9. Malfunctions 57

9.1 Faults 57

10. Disassembly and disposal 58

10.1 Disassembly 5810.2 Disposal 58

11. Service, spare parts and accessories 59

11.1 Postal address 5911.2 Service 5911.3 Spare parts 5911.4 Accessories 6011.4.1 Grinding means used 60

12. Appendix 61

12.1 EC Declaration of Conformity 61

Table of Contents

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1.1 Foreword These operating instructions are meant to make it easier to get to know the slicer knife grinding machine, also referred to in this document as “grinding machine”, and to use it properly for the intended purpose. The term “knife” can also be used for the term “slicer knife”.

The operating instructions contain important information on how to operate the grinding machine safely, properly and cost-effectively. Observance of these instructions helps to avoid dangers, reduce repair costs and downtimes, and increase the reliability and service life of the grinding machine.

The operating instructions must always be accessible at the place of use of the grinding machine.

The operating instructions must be read and used by all persons entrusted with working on the grinding machine, e.g. those entrusted with

• transportation, installation and

• operation, including fault elimination in the process flow, as well as

• servicing (maintenance, repair).

In addition to the operating instructions and the binding accident prevention regulations applica-ble in the country and place of use of the machine, the generally acknowledged rules of techno-logy 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.

ATTENTIONThe signal word “ATTENTION” is used to call attention to hazards which could result in damage and / or destruction of the grinding 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

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1.3 Warning labels on the grinding machine and their meanings

The following warnings and safety alert signs have been affixed to the grinding machine and the dressing device:

CAUTION! DANGEROUS ELECTRICAL VOLTAGE (warning notice on the control panel)

On being connected to the voltage supply (3x 400 V), the grinding 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 grinding machine must be separated from the mains supply before carrying out servicing, maintenance and repair jobs on it.

CAUTION! RISK OF INJURY FROM KNIFE (warning notice on the supporting table)

Work on the grinding machine involves the sharpening of knives which could cause serious cut injuries due to their sharpness.

Wearing protective gloves is mandatory when carrying out such jobs.

Be careful when transporting blades! Use the protective devices provided by the knife manufacturer. Wear protective gloves and apron.

CAUTION! RISK OF INJURY FROM ABRASIVE PARTICLES DURING DRESSING (warning notice on the dressing device)

Dressing the sharpening wheel and the grinding wheel gives rise to abrasive particles which could enter the eyes.

Wearing safety glasses is mandatory when carrying out such jobs.

1. Important notes

TYPE A 950Slicermesser Schleifmaschine

Bauj. 2010Masch.-Nr . 0107555950V 3x 400 A Gew. kg400 1,5

KW 1,0 Hz 50 Sch. Y

Maschinenbau GmbHWitschwender Strasse 2688368 Bergatreute Germany07527-928-0 www.knecht.eu

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1.4 Rating plate and machine serial number

The rating plate is located on the right side of the machine behind the switch cabinet.

The machine number is located on the rating plate and on the front left of the machine.

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: (7-31/1) denotes figure number 7-31, item 1.

The grinding angle of the grinding wheel (3-3/3) is ad-justed manually. Release the clamping lever (7-31/3) and use the lever (7-31/2) to adjust the device to the desired grinding angle (7-31/1). Afterwards, the device is once again clamped with the clamping lever (7-31/3).

1. Important notes

Figure 7-31 Manually adjusting the grinding angle

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1

2

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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 grinding machine is knowledge of the basic safety instructions and regulations.

• These operating instructions contain important notes on how to operate the grinding machine safely.

• All persons carrying out work on the grinding 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 grinding machine, who

• are familiar with the basic occupational safety and accident prevention regulations and have been trained and instructed in the handling of the grinding 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 grinding 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 grinding machine has 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 machine or other property. The grinding machine may be used only:

• for the intended purpose, and

• in faultless condition with regard to safety-relevant aspects.

Faults that could impair safety must be eliminated immediately.

2. Safety

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2. Safety

2.1.5 Malfunctions

If safety-relevant malfunctions occur in the grinding machine, or if the processing behaviour indicates that such malfunctions may have occurred, the grinding 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 Use as intended

The grinding machine is only designed for grinding slicer knives. Before starting work on a slicer knife, it must be checked whether the slicer knife fits on the copying grinding plate. Only then may the knife be mounted on the copy grinding plate.

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 grinding machine is being used improperly, if, e.g.,

• Slicer knives are sharpened without copy grinding plate.

• devices are not fastened properly.

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 grinding machine,

• improper transportation, commissioning, operation and maintenance of the grinding machine,

• operating the grinding 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 grinding machine.

• unauthorised structural alterations to the grinding machine,

• unauthorised modification, e.g. of the drive conditions (power and speed), and

• insufficient monitoring of machine parts that are exposed to wear.

• use of unapproved replacement and wear parts

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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 grinding 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 equipment

Before commissioning the grinding 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.

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 grinding 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 grinding 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 grinding 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 grinding machine under the permanent supervision of an experienced person.

2. Safety

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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 activate the control unit.

2.4.6 Safety measures in normal operation

Refrain from any method of working which may pose a risk to safety. Only operate the grinding machine if all the safety devices are installed and fully functional.

Check the grinding 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 grinding machine immediately and secure against restarting.

Before switching on the grinding 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 control panel 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 a damaged cable, cable connections, etc., must be immediately rectified by an authorised electrician.

Cables marked in yellow are electrically live even when the main switch is in off position.

CAUTION

2.4.8 Particular hazard areas

In the area of the grinding wheel, there is a hazard of pinching and being drawn in (e.g. clothing, fingers and hair). Suitable personal protective equipment must be worn.

2. Safety

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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 grinding 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 grinding machine

Modifications, retrofitting or rebuilds of the grinding machine are not allowed without the permission 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 grinding machine.

2.4.11 Cleaning the grinding machine

Cleaning agents and materials used must be handled properly and disposed of in an environ-ment-friendly manner.

Ensure that wear and replacement parts are disposed of in a safe and environmentally friendly way.

2.4.12 Oils and greases

When handling lubricants / oils and greases, follow the safety regulations for the product. Observe special instructions for the foodstuffs sector.

2.4.13 Relocation of the grinding 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.

2. Safety

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No persons other than those entrusted with this work may be present in the loading and installation area.

Only lift the grinding machine correctly with hoisting gear in accordance with the operating instructions (attachment points for hoisting equipment, etc.). Only use suitable transport vehicles with sufficient load-bearing capacity. Attach the load securely. Use appropriate attachment points. When putting in operation again, proceed only as instructed in the operating instructions.

2. Safety

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3. Description

3.1 Use as intended

The A 950 slicer knife grinding machine grinds slicer knives (sickle or circular knives) with diameter up to 900 mm. It is not suitable for grinding hand knives, among others.

3.2 Technical specifications

Height �� 1782 mm

Width �� 1669 mm

Depth �� 1043 mm

Space requirement (WxD) �� 2500 x 2000 mm

Weight �� 400 kg

Voltage supply �� 3x 400 V

Mains frequency �� 50 Hz

Output �� 0.5 kW

Power consumption �� 1 kW

Energy consumption �� 2.5 A

Back-up fuse �� 16 A

Control voltage �� + 24 V DC

Compressed air �� 6 bar (50 l/min)

Measured A-evaluated emission sound pressure level �� 72 dB (A) at workstation LpA*

Speed of sharpening wheel / grinding wheel �� 255 1/min

Rec. Ark. sharpening wheel �� d.49xd.30x20

Grinding wheel A �� d.100xd.40x50

*) Dual number noise emission value information according to EN ISO 4871 Emission sound pressure level according to EN ISO 11201 Uncertainty KpA in decibels: 3

The grinding / sharpening operation was carried out on a slicer knife (type known to be manufactured by Knecht Maschinenbau GmbH)

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3. Description

3.3 Functional description

The grinding machine can be used to automatically sharpen slicer knives (sickle or circular knives) with a size of maximum 900 mm.

The slicer knife is clamped onto a copy grinding plate and is sharpened along the knife edge by the sharpening wheel precisely according to its shape.

In case of emergency, the grinding machine can immediately be stopped by pressing the “Emergency Stop” button.

1669 mm1043 mm

1782

mm

Figure 3-1 Dimensions in mm

CoGCoG

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3. Description

3.4 Description of the assemblies

1 Hand wheel for grinding depth2 Grinding unit3 Water tank4 Control unit with control panel5 Knife holder6 Water regulator7 Machine feet

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1

2

6

7

4

5

Figure 3-2 General view of the grinding machine

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3. Description

1 Grinding wheel (sharpening)2 Coolant hose3 Grinding wheel 4 Dressing device5 Angle setting scale6 Drive pinion of cam disk7 Limit switch, down

Figure 3-3

2

143 1 6 13 10

7

4

5

Figure 3-4

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11

9

8

8 Cylinder knife packet Up / Down 9 Z coupling10 Inductive switch11 Bracket of cam disk12 Cylinder for pressing on the cam disk13 Limit switch, up14 Gear motor of sharpening wheel

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1 Control terminal2 “Cam disk change position” button3 “Grinding wheel On / Off” button4 “Knife 3” button (optional)5 “Knife 2” button (optional)6 “Knife 1” button (optional)7 “Setting mode Off / On” key switch8 “Start / Stop” button9 “Program 1, 2, 3” selection switch10 “Control On” button11 Main switch12 “Emergency Stop” button

3. Description

Figure 3-5 Control panel

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6

12

10 9 8 7

11

5 4 3 2

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For transporting the machine, the locally applicable safety and accident prevention regulations must be observed.

Only transport the machine in upright position (with the machine feet facing downwards).CAUTION

4.1 Transport aids

For transporting and for setting up the grinding machine, only use adequately dimensioned means of transport, e.g. truck, forklift, hydraulic lift truck. Remove the water tank before trans-porting.

When using a forklift or a lift truck, move the fork under the grinding machine; bear in mind the centre of gravity of the machine.

Bear in mind the centre of gravity of the machine. The centre of gravity (CoG) is shown in figure 3-1.

4.2 Transport damage

If damage is detected on unloading after acceptance of the delivery, inform Knecht Maschinenbau GmbH and the freight forwarder about it immediately. If required, consult an independent expert immediately.

Remove the packaging and shipping straps. Remove the shipping straps on the grinding machine.

Dispose of the packaging in an environmentally friendly way.

4.3 Transportation to another installation site

For transportation to another installation site, ensure that the space requirements are fulfilled (see Chapter 3.2).

A reliable electrical connection must be provided at the new installation site.The grinding machine must be stable and firmly placed.

Installations on the electrical system may only be performed by an authorised specialist or our customer service staff. Observe the locally applicable safety and accident prevention regulations.

CAUTION

4. Transport

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5. Installation

5.1 Selection of qualified personnel

It is advisable to have trained Knecht personnel perform the installation work on the grinding machine.

We assume no liability for damage caused by improper installation.CAUTION

5.2 Installation site

When determining the installation site, bear in mind the space requirement for installation maintenance and repair work on the grinding machine (see Chapter 3.2). The machine may only be stored or operated in dry rooms.

5.3 Supply connections

The grinding machine is delivered ready for connection with the appropriate connection cable.

Have a qualified electrician on site install the current supply.

Have a qualified technician on site install the compressed air supply.

Connect compressed air only when the doors are closed.

Never cut off the compressed air while the knives are clamped.This can result in serious injuries.

CAUTION

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5.4 Settings

The various components and the electrics are adjusted by Knecht Maschinenbau GmbH before delivery.

ATTENTIONUnauthorised changes to set values are not permitted and may damage the grinding machine.

5.5 Initial commissioning of the grinding machine

Place the grinding machine at the installation site on a level base.

Level out any unevenness of the floor by adjusting the machine feet (see Chapter 3.4, figure 3-2) with a flat wrench (width across flat 17). Check the machine for correct horizontal and vertical position by laying an appropriate machine water level on the respective guide rails.

Dismantle all the handling devices on the machine. Ensure that all the axes can be moved freely.

Completely install and check the safety devices before commissioning.

Have all the safety devices checked for proper functioning by trained personnel before commissioning.

CAUTION

5. Installation

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All work on the machine may only be performed by trained personnel.

The locally applicable safety and accident prevention regulations must be observed.

Connect compressed air only when the doors are closed.

Never cut off the compressed air while the knives are clamped.This can result in serious injuries.

CAUTION

Fill the water tank with water up to 3 cm below the edge.

Connect the power plug (CEE plug) to the power socket provided on site (3x 400 V, 16 A).

Close the safety doors.

Connect the compressed air.

Switch on the main switch.

Press the “Control On” button; this switches on the control unit of the grinding machine.

Press the “Grinding Wheels On ” button; the grinding wheels start rotating.

ATTENTIONDo not press the “Start” or “Cam disk in change position” buttons under any circum-stances.

Check the direction of rotation of grinding wheel (6-1/2) and grinding wheel (6-1/1).

If the direction of rotation is incorrect, reverse the phase in the power plug.

6. Commissioning

Figure 6-1 Check the direction of rotation

1

2

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ATTENTIONConfirm that the machine is correctly connected to the current supply.

If the connection to the voltage supply is incorrect, the grinding belts and cam disk can rotate in opposite direction of the prescribed direction. Incorrect direction of rotation can result in serious damage to the machine.

6. Commissioning

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Figure 7-2 Mounting the Z coupling

For all work on / with the grinding machine, the locally applicable safety and accident prevention regulations as well as instructions in the “Safety” and “Important Notes” section of the operating instructions must be observed.

CAUTION

7.1 Grinding of knives

Open the safety doors.

Set the coolant hose (7-1/1) as illustrated in the figure. The distance from the grinding wheel (7-1/2) should be approx. 5 cm.

ATTENTIONObserve the minimum distance between the coolant hose and the grinding wheel, as the grinding wheel moves forward when grinding.

Mount the Z coupling on cam disk SP116 as described and tighten with combination spanner SW19. Remember to mark the Z coupling and the base plate accordingly.

7. Operation

Figure 7-1 Setting the coolant hose

1 2

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Insert the cam disk (7-3/1) SP 116 in the holder (3-4/11) and tighten with spanner SW19.

Hand tighten the cam disk in such a way that the boreholes (7-3/2) are oriented in the direction of the grinding wheels.

Spigot and centring pin must accordingly engage in the cam disk.

ATTENTIONIncorrect positioning of cam disk SP 116 can damage the limit switches and the drive pinion.

.

7. Operation

Figure 7-3 Mounting the SP 116 cam disk

1

2

Figure 7-4 Spigot and centring pin

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Close the machine and the doors. Press the “Cam disk in change position” button (7-5/1).

The cam disk moves to a position suitable for placing of knives.

ATTENTIONDepending upon the size and dimension of the knife, the knife can become cumbersome with blade guard Ergonomics. Do not step inside the machine room for placing the knife.

7. Operation

Figure 7-5 Moving the cam disk to change position

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7.1.1 Grinding the slicer knife without suspension attachment

Place the knife (7-6/1) with blade guard (7-6/2) on the spigot (7-6/3) and align with the relevant centring device (7-6/4).

The contour of the cam disk corresponds to the contour of the knife.

Never place the knife without blade guard.

This can result in serious injuries.

CAUTION

ATTENTIONOnly use knives suitable for the cam disk. (Compare the labeling of the plate and the knife.)

Using an incorrect cam disk can damage the knife and machine.

Secure the knife including the blade guard (7-7/3) with one hand against falling and attach the clamping flange (7-7/1) and mount the star knob (7-7/2) with the other hand.

Tighten the star knob (7-7/2). Finally, remove the blade guard (7-7/3).


7. Operation

Figure 7-6 Placing the knife

4321

Figure 7-7 Clamping the knife

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3

1

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7. Operation

Sharp knife edge, can result in serious injuries.

CAUTION

Set the “Setting Mode” key switch (7-8/1) to “Off” and press the “Start / Stop” button (7-8/2).

Open the coolant tap.

The machine starts the sharpening process.

When the knife is in working position, press the “Start / Stop” button (7-8/2) again and halt the machine.

NOTICE Briefly pressing the “Start / Stop” button interrupts the program flow and the button flashes. The grinding program continues when the button is pressed again.

Pressing the “Start / Stop” button for 3 sec-onds aborts the program. The button no longer flashes. Pressing the button again starts the program flow once again from the beginning.

Figure 7-8 Setting up the machine

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7.1.2 Grinding the slicer knife with suspension attachment

Place the knife (7-9/2) including blade guard (7-9/3) on the respective suspension attachment (7-9/1). Place the knife (7-9/2) with guard (7-9/3) on the spigot (7-10/1).

Align with the help of the centring device (7-10/2).


Secure the knife including the blade guard (7-11/3) with one hand against falling and attach the clamping flange (7-11/1) and mount the star knob (7-11/2) with the other hand. Tighten the star knob (7-11/2). Finally, remove the blade guard (7-11/3).


Using an incorrect cam disk can damage the knife and machine.

7. Operation

Figure 7-9 Suspension attachment

1

3

2

Figure 7-11 Suspension attachment

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1

2

Figure 7-10 Centring device

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2

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7. Operation



Open the coolant tap.The machine starts the sharpening process.




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7. Operation

7.1.3 Grinding of circular knives

Place the knife (concealed in a blade guard (7-13/1)) with guard (7-13/2) on the spigot (7-13/3).


Secure the knife including the blade guard (7-14/1) with one hand against falling and attach the clamping flange (7-14/2) and mount the star knob (7-14/3) with the other hand.

Tighten the star knob (7-14/3). Finally, remove the blade guard (7-14/1).



Using an incorrect cam disk can damage the knife and machine

Figure 7-14 Circular knife

2

1

3

Figure 7-13 Placing the circular knife

1

3

2

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Open the coolant tap.

The machine starts the sharpening process.




7. Operation

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7.1.4 Set the knife to the centre of the disk

Adjust the knife with the hand wheel (3-2/1) in such a way that the knife edge goes through the centre of the rear grinding wheel.

Check sharpness when the program ends (“Start / Stop” button no longer flashes).

If the knife is not yet sharp, mark the blade on both sides with a pencil and grind again.

The marked places indicate whether the knife has been completely ground or not. If not, adjust the grinding angle to make it steeper

.

7. Operation

Figure 7-16 Correct

Figure 7-17 Incorrect

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7.2 Grinding multiple knives (optional)

Sharp knife edge, can result in serious injuries.

CAUTION

The A 950 can grind up to three knives simultaneously. Only similarly shaped knives can be ground in one work cycle.

Instead of the standard clamping flange, the mul-tiway adapter is used for grinding multiple knives.

The knives are mounted one after the other.

7. Operation

Figure 7-18 Multiway adapter

Figure 7-19 Mounting the knives on top of each other

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The last knife is clamped with the standard flange (7-20/1).


Press the “Knife” button (7-21/1) to select the number of knives and start the program flow with the “Start / Stop” button (7-21/2).

The machine starts to process the knives one after the other.

NOTICE A “Knife” button must always be selected. If no button is pressed, all three “Knife” buttons flash.

7. Operation

Figure 7-20 Fastening the last knife

1

1 1 1

2

Figure 7-21 Selection switch for number of knives

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7.3 Control Panel

7.3.1 Changing the number of cycles and (optionally) the grinding angle

Press the button (7-22/1) to change the number of cycles.

Select “5” behind the number of cycles (7-23/1) with the cursor buttons (7-23/2). Enter the new value in the number block (7-23/3).

(Optionally) Select “230” behind “Angle front position” (7-23/1) with the cursor buttons (7-23/2). Enter the new value in the number block (7-23/3). Where: “230” stands for “23°”, etc.

To save the values, change to another program with the program switch (3-5/9).

NOTICE Changes become effective only for the currently selected program (program switch (3-5/9)).

7. Operation

Figure 7-22

1

A 950Grinding Machine

Language ManualParameters DIAG

1

2

Figure 7-23

3

Number of cycles 3 5Angle front position 230Setting Pos. 500

GeneralCam disk Drive Setting

39

7.3.2 Example of manual menu

Given below is an example of how the grinding wheel is moved forward or backward.

Switch on the machine and close the safety doors. Press the button (7-24/1) on the control panel.

Press the “Drive” button (7-25/2).

NOTICE The main screen appears again when you press the buttons ((7-25/1) or (7-25/3)) .

7. Operation

Figure 7-24 Start screen when the machine is switched on

1



Figure 7-25 Display screen on pressing the “Manual” button

1 2 3

A 950Manual functions

Cam disk Drive Setting General

40

Press the button (7-26/1). The grinding wheel moves forward.

Press the button (7-26/1) again.

The grinding wheel moves back again.

NOTICE The main screen appears again when you press the buttons ((7-26/2) or (7-26/3)) .

7. Operation

Figure 7-26 Display screen on pressing the “Drive” button

2 1 3


E/A v/z E/A v/z

Grinding, front Grinding, rear

41

7.3.3 Structure of language control

Available languages:

0 = German1 = English2 = Spanish3 = Russian4 = French5 = Swedish

7. Operation


Language setting 30 = German1 = English2 = Spanish


42

7.3.4 Structure of the manual menu

7. Operation

This function is only active when the knife packet is down and the cam disk is pressing against it.

This function is only active when the knife packet is down.




Cam disk




Angle adjustment Feed





Language

Cam disk

Start

E/A

Grinding, front Grinding, rear

BrakeE/A

front

Back

Pos1

Back

Pos1

Manual

Drive

End

v/z

MPDown

rear

Forward

Pos2

Forward

500

Pos3

Position

150

Position

Parameters

Setting

Press against

E/A

MPUp

DIAG

General

Back

v/z

Coolant

Adjustment 10000

Adjustment 10000 300

Angle adjustment, front 10000

Angle adjustment, front 10000

43

7.4 Parameters

7.4.1 Parameters in general

Parameters Factory Setting

Min. Max. Meaning

Grinding wheel, front, active

1 0 2 0 = front grinding wheel is not active1 = front grinding wheel is active2 = Section ***

Grinding wheel, rear, active 1 0 2 0 = rear grinding wheel is not active1 = rear grinding wheel is active2 = Section ***

Circular grinding, active 0 0 1 Circular grinding is active

Raise, grinding, front, start, active

1 0 1 Raising of front grinding wheel at start is active

Raise grinding, rear, start, active

1 0 1 Raising of rear grinding wheel at start is active

Raise grinding, front, end, active

1 0 1 Raising of front grinding wheel in the end is active

Raise grinding, rear, end, active

1 0 1 Raising of rear grinding wheel in the end is active

Grinding, front, last, rear, cycle, over

0 0 1 Last rear cycle of front grinding wheel is over

Grinding, rear, last, rear, cycle, over

0 0 1 Last rear cycle of rear grinding wheel is over

Knife packet on active 1 0 1 Knife packet moves upwards at cycle end

Angle adjustment, front, active

1 0 1 Angle adjustment in front is active

Adjustment, rear, active 1 0 1 Adjustment in the rear is active

7. Operation

Setting of positionadjustable up to min. 20;

max. 2600

Number of cycles adjustable up to min. 1; max. 200

Current number of cycles

Angle adjustable up to min. 150 (15°); max. 350 (35°)A 950

Grinding Machine

Language

General

Manual

Cam disk

Parameters

Drive

DIAG

Setting

Number of cycles (set point) 3 5Angle, front, position 230Setting Pos. 500

44

*** Section: Grinding wheel, front, active = 2, grinding wheel, rear, active = 2

Grinding wheels are active, but are not fed. Grinding wheel, front, active = 1, grinding wheel, rear, active = 2

Front grinding wheel is active until last cycle. In last cycle, rear grinding wheel is active. Grinding wheel, front, active = 2, grinding wheel, rear, active = 1

Rear grinding wheel is active until last cycle. In last cycle, front grinding wheel is active.

7. Operation

45

7.4.2 Parameters for cam disk


Min. Max. Meaning

Knife at start 10 0 80 Waiting time of the cam disk until the grinding wheel has moved forward

Knife at end 10 0 80 Waiting time of the cam disk until the grinding wheel has moved backwards

Raise grinding, front, start 10 0 90 Waiting time before raising the front grinding wheel at start

Raise grinding, rear, start 10 0 90 Waiting time before raising the rear grinding wheel at start

Raise grinding, front, end 10 0 90 Waiting time before raising the front grinding wheel in the end

Raise grinding, rear, end 10 0 90 Waiting time before raising the rear grinding wheel in the end

Knife packet, front 20 0 100 Waiting time before the knife packet moves forward after start

Knife packet, rear 20 0 100 Waiting time before the knife packet moves backward after the end

Knife packet, down 20 0 100 Waiting time before the knife packet is lowered after start

Knife packet, up 20 0 100 Waiting time before the knife packet is raised after start

Monitoring, cam disk 50 0 900 Monitoring of the maximum time for which a limit switch may be activated

7. Operation


Language GeneralManualCam

diskParameters DriveDIAG Setting


46

7.4.3 Parameters for drives


Min. Max. Meaning

Feed, grinding, front, front 10 5 80 Delay time before feeding the front grinding wheel

Feed, grinding, front, rear 20 5 80 Delay time before the front grinding wheel moves away

Feed, grinding, rear, front 10 5 80 Delay time before feeding the rear grind-ing wheel

Feed, grinding, rear, rear 20 5 80 Delay time before the rear grinding wheel moves away

7. Operation


Language GeneralManualCam disk

Parameters DriveDIAG Setting


47

7.4.4 Parameters for adjustments / settings


Min. Max. Meaning

Angle, front, position 210 150 350 Angle setting of the front grinding wheel

Angle, front, dressing position

320 0 350 Angle setting of the front grinding wheel for dressing and grinding wheel change

Angle, front, tolerance 1 0 50 Tolerance of the position measuring system (digital value)

Angle, front, offset 100 0 250 Angle correction for the front grinding wheel

Angle, front, limit < 150 0 200 Min. angle setting of software limit switch

Angle, front, limit > 350 200 351 Max. angle setting of software limit switch

Setting P.1 480 10 5000 Position 1 of the grinding wheels for the first knife

Setting P.2 1295 10 5000 Position 2 of the grinding wheels for the second knife

Setting P.3 2145 10 5000 Position 3 of the grinding wheels for the third knife

Setting, rear, tolerance 10 1 50 Tolerance of the position measuring system

Setting, rear, offset 0 0 300 Correction value of the y-axis

Setting, rear, limit < 350 0 1000 Min. y-axis setting of software limit switch

Setting, rear, limit > 2400 1000 4700 Max. y-axis setting of software limit switch

7. Operation


Language GeneralManualCam disk

Parameters DriveDIAG Setting


48

7.5 Diagnostics

7.5.1 Status display inputs / outputs

Possible faults:

No faultNo compressed airMotor protection, fuseControl unit switched onSafety doors openCam disk monitoring unitError in brake activationCircular grinding parameter

Cam disk

Start 0 1 if the cam disk is at start position of the limit switch

End 0 1 if the cam disk is at end position of the limit switch

Change / Pos. 0 1 if the cam disk is in change position of the limit switch

Safety door closed 1 if both safety doors are closed

7. Operation


DiagnosisNo fault

Cam diskEnd 0 Start 0 Change/Pos. 0

Safety door closed 1

Language

E/A

ManualParameters DIAG

Status

49

7.5.2 Diagnostic status

Change position requested 0 1 if the cam disk is at knife change position

Change position active 0 1 if the machine is currently approaching the change position

Automatic active 0 1 if the knife is being ground

7. Operation


DiagnosisNo fault

Change position requested 0Change position active 0Automatic active 0

Language

E/A

ManualParameters DIAG

Status

50

7.6 Dressing the grinding wheel

Grinding wheels that have become untrue are trued by moving the truing diamond (7-27/3) over the running grinding wheel (7-27/4) with the deburring lever (7-27/1). The truing diamond is fed by rotating the feed nut (7-27/2) in clockwise direction.

For dressing, the “Setting Mode” key switch must be set to “I” position.

There is a risk of clothing and hair getting entangled. There is a risk of hands being crushed. This can result in serious injuries.

To prevent dust formation, always open the coolant tap when dressing, and direct the coolant hose at the grinding wheel.

Never dress with clamped knives. This can result in serious cut injuries.

CAUTION

7. Operation

Figure 7-27 Dressing

31

2

4

51

7.7 Changing the grinding wheel

Switch off the main switch and set the grinding angle to 35°.

With an SW6 hex wrench, loosen and remove the screw in the centre of the grinding wheel in the direction of the arrow indicating the direction of rotation (see figure 6-1).

Remove the grinding wheel and assemble in reverse sequence.

If the grinding wheel is half-worn, mount the con-nection flange (7-29/1) with an M8x40 screw. To do that, dismantle the grinding wheel as described above. Place the connection flange on the topside of the grinding wheel. The connection flange has a groove and is retained in the locating hole of the grinding wheel. Mount the grinding wheel with an M8x40 screw.

7. Operation

1

Figure 7-28 Changing the grinding wheel

Figure 7-29 Grinding wheel including the connection flange

52

7. Operation

Loosen and remove the screw (7-30/1) in the cen-tre of the rear grinding wheel (7-30/2) by rotating it in counter-clockwise direction with an SW5 hex wrench and remove the grinding wheel.

Mount the new grinding wheel and tighten the screw with the flange back again.

ATTENTIONUse only original grinding wheels.

Using non-original grinding wheels can result in damage to the knife and the grinding machine.

1

2

Figure 7-30 Changing the rear grinding wheel

53

7.8 Setting the grinding angle

7.8.1 Manual angle setting

The grinding angle of the grinding wheel (3-3/3) is adjusted manually. Release the clamping lever (7-31/3) and use the lever (7-31/2) to adjust the device to the desired grinding angle (7-31/1). Afterwards, the device is once again clamped with the clamping lever (7-31/3).

7.8.2 Angle setting via display (optional)

The grinding angle of the grinding wheel (3-3/3) is set via the parameters on the control panel (3-5/1).

.

7. Operation

Figure 7-31 Manually adjusting the grinding angle

3

1

2

Figure 7-32 Adjusting the grinding angle via the display

54

7.9 Angle adjustment of the sharpening wheel

The sharpening angle can be set from 0 - 5°.

To set, move setting to Position 3 and loosen the screws SW19 (7-33/1).

(7-33/2) Angle scale of the sharpening wheel.

7. Operation

Figure 7-33 Angle adjustment of sharpening wheel

1 2

1

55

8. Care and maintenance

For all work on the grinding machine, the locally applicable safety and accident prevention regulations as well as instructions in the “Safety” and “Important Notes” section of the operating instructions must be observed.

CAUTION

8.1 Coolant

The coolant must be changed and the water tank must be cleaned every week.

The water tank must always be filled with water up to 3 cm below the rim. The water tank can be pulled out sideways for filling and cleaning.

The pump (8-1/2) including the guard can be re-moved by loosening and removing the star knobs (8-1/1).

8.2 Lubricating the cross table

Place grease gun on the lubrication points and lubricate the cross table.

We recommend “OEST Multi-Purpose Grease L2” or a similar customary make.

Press one round of grease into the lubrication point once a month.

Figure 8-2 Lubricating the cross table

Figure 8-1 Water tank

1

2

1

56

8.3 Cleaning the grinding machine

After grinding and / or dressing work, the grinding machine must be cleaned with a moist rag or a wet vacuum cleaner. Rub acid-free oil into the grinding machine. Clean the window with window cleaning agent.

ATTENTIONDo not spray-wash the grinding machine with water. This can damage the machine.

8.4 Other lubrication points

Press one round of grease into the lubrication point at the marked places with grease gun 1 once a month. Grease the spindle (8-3/1) once every month.

8. Care and maintenance

Figure 8-3 Adjustable axis when the side panel has been removed

57

9. Malfunctions

9.1 Faults

Malfunction Fault Remedy

Knife is not getting sharpened.

The knife edge is not reached during the grind-ing operation, i.e. the grinding angle is too flat.

Set a steeper angle.

Burr formation on the knife edge.

Use less aggressive, rear grinding wheel.

Number of cycles is set too low.

Increase the number of cycles.

Grinding wheel is worn. Mount connection flange or new grinding wheel.

The sharpening machine does not run after pressing the “Start” button.

Protection hood is open. Close the protection hood.

“Emergency Stop” button is activated.

Release the “Emergency Stop” button and press the “Control On” button.

Control unit is not switched on.

Press the “Control On” button.

Control unit cannot be switched on.

Motor protection switch has tripped.

Switch on the motor protection switch.

If a fault is not included in the faults table or if the fault is not eliminated, please contact our service staff (Chapter 11.2).

58

10. Disassembly and disposal

10.1 Disassembly

The operating materials must be disposed of correctly.

Secure moving parts against slipping.

The disassembly must be carried out by a qualified specialist company.

10.2 Disposal

At the end of service life, the machine must be disposed of by a qualified specialist company. In exceptional cases and in agreement with Knecht Maschinenbau GmbH, the machine can be returned.

Operating materials (e.g. whetstones, coolants etc.) must also be disposed of correctly.

59

11.1 Postal address

Knecht Maschinenbau GmbHWitschwender Straße 2688368 BergatreuteGermany

Phone +49-7527-928-0Fax +49-7527-928-32

[email protected]

11.2 Service

Service management:See postal address

[email protected]

11.3 Spare parts

If you need spare parts, please use the spare parts list provided with the machine. Please place your order as shown below.

Please always include the following information: (Example)

Machine type (A950)Machine serial number (050158950)Designation of component assembly (Slides X component assembly)Designation of individual part (Z axis cam disk bearing shaft)Item number (12)Drawing number (2000130-12428)Quantity (1)

Please feel free to contact us with any questions.

11. Service, spare parts and accessories

60

11. Service, spare parts and accessories

11.4 Accessories

11.4.1 Grinding means used

Name Max. operating speed

Standard Order number

Sharpening wheel d.100x60x40 Fine corundum, grain size 320

32 m/s EN 12413 412B-80-0798

Grinding wheel d.49x20xd.30 Record Arcansas

32 m/s EN 12413 412F-20-0534

ATTENTIONUse only original grinding wheels.

Using non-original grinding wheels can result in damage to the knife and the grinding machine.

If you require cup wheels or other accessories, please contact our sales staff, dealers, or Knecht Maschinenbau GmbH directly.

Thank you for buying our product!

61

12. Appendix

12.1 EC Declaration of Conformityin accordance with the EC Directive 2006 / 42 / EC

• Machinery Directive 2006 / 42 / EC• Electromagnetic Compatibility Directive 2004 / 108 / EC

We hereby declare that the machine mentioned below fulfils the basic health and safety requirements of the relevant EC Directive by virtue of the machine's construction and design and the version placed by us on the market.

This declaration becomes void if the machine is modified in any way without our consent.

Designation of the machine: Slicer knife grinding machineType designation: A 950

Applicable harmonised standards, DIN EN ISO 12100in particular: DIN EN ISO 13850 DIN EN ISO 13857 DIN EN 13218 DIN EN 60204-1 DIN EN 349

Responsible for the documentation: Peter Heine (Dipl. Ing. Mechanical Engineering BA) Phone +49-7527-928-40

Manufacturer: Knecht Maschinenbau GmbH Witschwender Straße 26 88368 Bergatreute Germany

Complete technical documentation is available. The operating instructions document for the machine is available in its original version and in the native language of the user.

Bergatreute, 21 July 2016 Managing Director–––––––––––––––––––––––––– –––––––––––––––––––––––––– ––––––––––––––––––––––Place, date Signature Signatory details

Knecht Maschinenbau GmbH

Witschwender Straße 26 ■ 88368 Bergatreute ■ Germany

Phone +49 -7527-928-0 ■ Fax +49 -7527-928-32

[email protected] ■ www.knecht.eu