1.FIRST STEPS

Congratulations on the purchase of the ELITE model MVB 850 grinding and back-off grinding machine.

Read this guide before you start.

The MVB 850 is a grinding and back-off grinding machine for the top and front of circular saws with tungsten carbide teeth from ø100 to ø850 mm.
It comes equipped with 5 CNC axes for complete machining of all common tooth geometries in one cycle.

This manual introduces you to the main functions of the grinding machine in order to avoid risks to your health or that may cause breakdown or premature wear of the machine.

If you have any questions, please contact us directly or one of our authorized distributors.

Informative Note: the user manual of the circular saw grinder described therein may present some variations in use as our machine is subject to possible construction modifications, depending on the incorporation of technological advances in our sharpening equipment.

2.SAFETY

2.1.Safety regulations

Carefully observe and apply the following safety rules, not respecting these rules may cause personal injury or damage to the machine itself.

The installation and maintenance of the machine described in this manual must be carried out only by operators who are familiar with its operation and have sufficient technical knowledge.

The ELITE sharpening machines of the GBT 850 model range have been designed for the grinding of the sides of circular saws with carbide teeth, excluding any other type of operation.

These warnings do not include all possible risks that improper use of the machine could cause. For this reason, the operator must proceed with prudence and observing the rules.

2.2.Use and storage of the instruction manual

This instruction manual must be read and understood by all personnel who come into contact with the machine.

This manual is for:

• Indicate the correct use of the machine according to the type of work to be carried out.
• Provide the necessary instructions for the transport, adjustment and maintenance of the machine.
• Facilitate the ordering of spare parts and information of risks.

Limits of use of the manual:
The machine is intended for professional use and therefore the experience of the operator is required and of vital importance.

Importance and conservation of the manual:
This manual must be considered part of the machine and must therefore be attached to it until the end of its use.

Additional information and clarifications:
The user, owner or maintenance person can contact the manufacturer to request any additional information on the use of the machine and possible modalities for maintenance and repair intervention.

Expiration of responsibility:
The manufacturer is considered exempt from any liability in the event of:

• Improper use of the machine
• Use of the machine by untrained persons
• Serious failures in scheduled maintenance
• Unauthorized interventions or modifications
• Use of non-original spare parts.

2.3.Declaration of conformity

The company hereby:
Elite Sharpening Machines, SLU
Joan Oró, 27
ES-08635 Sant Esteve Sesrovires

Declares that the product indicated below, based on its conception and construction, as well as the version put on the market by our company, complies with the mandatory basic health and safety requirements of the CE directive.

This declaration loses its validity in the event of unauthorized modifications to the product.

Product name: ELITE model MVB 850
Product type: Grinding and back-off grinding machine
Serial No.: __

EC Directive Competences:

• EC Machinery Directive (2006/42/EC)
• European directive on electromagnetic compatibility (2014/30/EU)
• The protection purposes of the CE low voltage directive (2006/95/CE) were fulfilled according to annex I, nr. 1.5.1 of the machinery directive 2006/42/EC

The technical documentation was compiled by legal representative of the documentation:

Sergi Valls Gramunt
Joan Oró, 27
ES-08635 Sant Esteve Sesrovires

Date / manufacturer - Signature: __
Signatory data: Sergi Valls Gramunt, manager

3.TECHNICAL DATA

In the following information table, find the list of technical specifications of the sharpener described in this manual.

3.1 TECHNICAL REQUIREMENTS

6 bar air connection required.
Connection voltage: 220/400V 2Ph 50/60Hz
Required connection power: 1.5 kW

3.2 ELITE MVB 850. EQUIPMENT INCLUDED

• Saw holder for incisors with a diameter of 100 to 210 mm.
• Saw holder for discs with a diameter of 210 to 850 mm.
• Centering ring: ø30 mm.
• Grinding wheel holder for face and back sharpening wheels
• Small mist extractor
• 3 mm. feed pawl
• Lighting of the work area using LED lamp
• Device for sharpening saws of equal diameters
• Machine closed by enclosure.
• Prepared for connection to a machine filtration system or a centralized filtration system.

4.TRANSPORT

The ELITE MVB 850 is delivered packed in a wooden crate.

During all transport and transfer, the machine must be kept in its original vertical position, any variation in this position may lead to the loss of the guarantee.

4.1.Instructions for unpacking and setting up

To lift or move the load, use a forklift with blades long enough to support the machine, taking into account the width and depth of the machine for the calculation of the weights to lift.

Once the packaging has been opened, remove the fixing stops from the feet of the machine

Before connecting the machine, remove any protection that the machine may have to protect the components during transport.

5.INSTALLATION

5.1.Machine placement

Before any work make sure that the machine is well aligned and does not oscillate at any of its ends, in which case it must be wedged to avoid movements. For its correct level it is necessary to use a leveling tool. This check must be carried out both longitudinally and transversally.

Poorly leveling the machine can cause unwanted vibrations and premature wear of the linear guides.

Remember: before connecting the machine, remove any protection that the machine may have to protect the components during transport.

5.2.Electrical connection

The electrical connection of the machine must be carried out by qualified technical personnel only at the voltage indicated in the machine order / machine identification plate.
For any doubt about the voltage, consult the manufacturer before the connection.

Any claim for an incorrect connection will be out of warranty.

5.3.Main components of the machine

1. Enclosure sliding door.
2. Machine enclosure.
3. Machine control panel.

5.4.Control panel

1. Menu screen
2. Raising of the grinding wheel/stone.
3. Movement of the grinding wheel/stone to the left.
4. Movement of the grinding wheel/stone to the right.
5. Navigation menu.
6. Lowering the grinding wheel/stone.
7. Drive of the feed claw.
8. Opening and closing of the jaw.
9. Turning on the LED light.
10. Refrigeration drive.
11. Machine power on
12. Machine shutdown.
13. Emergency stop.

6.STARTING UP

In this section we show you how the buttons on the ELITE MVB 850 control panel work.

NOTE: The data that appears in the different images is an example, each type of tool has its recommended data and the sharpening professional must know them.

Emergency stop

It is the red button located at the bottom right, in the penultimate row of buttons. In the event that there is a failure in use or a dangerous situation is being created, it allows the automatic disconnection of the machine.

Not to be used unless strictly necessary.

Once used to use the machine again, it must be pulled to return to the initial position.

ATTENTION: Under no circumstances should this control be modified or manipulated, this automatically puts the operator and people around him at risk of serious injury.

Sharpening operation

To start the sharpening process, you must first make sure that the emergency stop button is not activated.
The two types of modes in which it can operate are STOP MODE and START MODE.

DANGER: never manipulate the control panel buttons while changing the grinding wheel: risk of very serious injuries.

ATTENTION: before starting the wheel we must make sure that it is well attached to the axis where it is located and that NO ONE is manipulating the area where it rotates. UNDER NO CIRCUMSTANCES CAN THE WHEEL BE STARTED WHILE SOMEONE IS MANIPULATING IT.

6.1.Power on and referencing

Turn on the machine with the ignition selector in the ON position, deactivate the emergency stop if it is active.

The machine's screen turns on and so does the green light of the traffic light.

Check that no shaft will collide with the referencing grinding wheel.

Then close the cabin and press the START button and follow the instructions on the screen.

IMPORTANT: Do not open the cabin while the machine is referencing. If you accidentally open it, turn the machine off again and repeat the process.

Once the machine has finished referencing it is ready to work.

6.2.Changing the grinding wheel

Necessary tools: Open wrench No. 17.

With the machine off, remove the hex screw from the bottom of the grinding wheel. Hold the wheel and the wheel holder ring throughout the process so that it does not fall.

Now insert the new wheel.

Replace the centering ring in the correct position so that the centering bolt passes through the centering ring.

Replace the hex screw and tighten.

Changing the grinding wheel

6.3. Changing the saw holder

The Elite MVB 850 sharpener comes equipped with two (2) saw stands. One up to ø850 mm and another support for incisions.

To change the support, we remove the two (2) screws and keep them. Now we have the support out. It is important to make sure that when the support comes out, the bolt remains in its position. The 10 mm bolt will wear out over time and use due to the rubbing of the centering rings, so when the time comes it will have to be exchanged for a new bolt.

Next, we place the second support that equips the machine, which is for incisors that covers from ø100 to ø200 mm and we make sure to fix it well and we have it. Now, the bolt itself limits the diameter that we can put on the saw blade.

The operation is the same, we put a centering ring and we can now place the disc to be sharpened. In this way, we have it ready to work.

Change of saw holder

6.4.Adjustment of the feed curve according to the diameter of the circular saw

Depending on the diameter of the disc, the feed curve will need to be adjusted so that the feed pawl can advance the saw.

NOTE: To adjust the feed curve the feed pawl must be in its lower position. Otherwise the force of the spring will move the nail to the initial position and we will lose the current position.

7.GRINDING OPERATION

7.1.Back-off grinding

To bring the grinding wheel closer to the top of the tooth, once we have verified that we have placed the appropriate wheel for sharpening the top or external part of the tooth, we go to the final part of the program and press the START button located in the lower left corner. The information message will appear on the screen as the sharpener will proceed to rotate the stone. We press the START button again and then the machine prepares itself.

Next, we close the clamp by pressing the third button on the second line of the control panel, the one in which two converging arrows are shown. Using the button in the second position of the second line of the tooth advance panel, we verify that we are on the correct tooth, as requested by the machine, and we move the advance nail away. At this point, the instruction appears on the menu screen to rub the stone in the degrees indicated by the selected tooth shape.

From here, we can move the axes using the three buttons on the first row of the control panel, to zoom at fast speed or, if we press the menu selector once, at slow speed.

To begin the approach, we leave the fast speed selected and then look for half of the stone to rub against the flat part of the trapezoid tooth. Once we have the stone close enough, we press the white menu selector again to select the slow speed. At this lower speed, we finish making the approach, always with visual support and using the axis movement buttons.

Once the stone is already rubbing against the tooth, we must raise the stone to the point where the sharpening will begin. At this point, we will make the stone enter rubbing and without touching either the top tooth or the bottom tooth so that it makes the complete sharpening path. This is going to be the starting point.

After determining the starting point, we press the START button again and the machine prepares itself towards the second point it needs on the trapezoid tooth. This will depend on the type of saw to be sharpened: there are saws that, due to their tooth geometry, only need one point and there are others that require two. In the case at hand, that of the trapezoid, it needs two points.

We will see that the machine is placed on the inside of the trapezoid tooth and, without advancing the tooth, we quickly move the stone. Once we are very close, press the menu selector again.

Back-off grinding

7.2.Top grinding

Only available with machines with the optional saw sharpening accessory.

To bring the stone closer to the top of the tooth, once we have verified that we have placed the appropriate stone for sharpening the top or external part of the tooth, we go to the final part of the program and press the START button located in the lower left corner. The information message will appear on the screen as the sharpener will proceed to rotate the stone. We press the START button again and then the machine prepares itself.

Next, we close the clamp by pressing the third button on the second line of the control panel, the one in which two converging arrows are shown. Using the button in the second position of the second line of the tooth advance panel, we verify that we are on the correct tooth, as requested by the machine, and we move the advance nail away. At this point, the instruction appears on the menu screen to rub the stone in the degrees indicated by the selected tooth shape.

From here, we can move the axes using the three buttons on the first row of the control panel, to zoom at fast speed or, if we press the menu selector once, at slow speed.

To begin the approach, we leave the fast speed selected and then look for half of the stone to rub against the flat part of the trapezoid tooth. Once we have the stone close enough, we press the white menu selector again to select the slow speed. At this lower speed, we finish making the approach, always with visual support and using the axis movement buttons.

Once the stone is already rubbing against the tooth, we must raise the stone to the point where the sharpening will begin. At this point, we will make the stone enter rubbing and without touching either the top tooth or the bottom tooth so that it makes the complete sharpening path. This is going to be the starting point.

After determining the starting point, we press the START button again and the machine prepares itself towards the second point it needs on the trapezoid tooth. This will depend on the type of saw to be sharpened: there are saws that, due to their tooth geometry, only need one point and there are others that require two. In the case at hand, that of the trapezoid, it needs two points.

We will see that the machine is placed on the internal part of the trapezoid tooth and, without advancing the tooth, We quickly move the stone. Once we are very close, press the menu selector again.

Sharpening the top of the tooth

7.3.Sharpening of the tooth face

Only available with machines with the optional saw sharpening accessory.

To proceed to bring the tooth closer to the face or internal part of the saw blade, we will make sure to select the appropriate program; the one in which within the Tooth parameter it shows us the Flat Face option on the control panel screen. To do this, we will use the white selector located in the upper right part of the control panel and we will turn it until the screen shows us the program we want to select.

Next, we press the START button located at the bottom left of the control panel. So that the following warning message appears on the menu screen: ATTENTION. The wheel/stone is rotated (this is an informative message that warns us of the danger of being near the abrasive stone). After this, we press the START button again. We will see how the machine prepares for the sharpening process.

At this point, using the direction arrows that will allow us to move the axes, we will be able to move the stone at a fast speed. If, on the other hand, we want to select the slow speed, we will press the white selector once and select the axes that we require to move.

This allows us to make the initial approach with fast speed.

Important note: at this point, it is important to make sure you have the jaw closed and the tooth to be sharpened correct.

Once we are very close to the tooth, we will change the speed to slow on the menu screen using the white selector.

At this moment, we must introduce the abrasive stone to the point of the internal part where we want the sharpening to reach, contacting it, and to the part where we want to enter. It is at this point where the sharpening will end and where we must approximate it.

Once we have the approximate saw, we press the START button again and the sharpening cycle will begin to run.

Sharpening of tooth face

8.MAINTENANCE

8.1.Preventive maintenance

Maintenance of the ELITE MVB 850 sharpeners is very simple but at the same time important.

It consists of the following:

• Cleaning of the carriage guides - Daily
• Cleaning and greasing the polished parts, in case the machine is not used for several days, to prevent oxidation.
• Check the level of coolant in the coolant tank. You can use to refill the coolant the ELITE SintoCut PRO MIX. The coolant should be mixed with water between 2 and 8%. Being below it can lead to oxidation of mechanical parts and if the level is higher it can be toxic. - Monthly.
• The sludge and dirty that is deposited both in the work area and in the coolant tank must be emptied - Weekly.
• Keeping the machine clean and in good condition will allow for optimal long-term use.

Use the equipment only in dry environments. The temperature must be between 5 and 40ºC. A relative humidity greater than 90%, as well as a saline environment, would cause premature corrosion of the machine.

To lubricate the pneumatic circuit we recommend using Esso Spinesso oil

9.ACCESSORIES AND CONSUMABLES

9.1.Abrasive wheels

9.1.1.Back-off grinding

For back-off grinding we recommend the following reference: 2410-A. 1A1 ø180x4xø32 mm.

9.1.2. Top grinding

For grinding the top of the teeth we recommend the following reference: 2031-A. 14B1 D107/46 ø150x8x5x10xø32 mm.

9.1.3.Face grinding

For face grinding face we recommend the following reference: 2132-A. 12V9 20º D76 C125 ø175x2.9x13x13xø32 mm.

9.2.Coolant agents

We recommend using ELITE SintoCut PRO MIX or equivalent.

9.3.Equipment

Additional equipment of the machine.

9.3.1.Filtering systems

Machine could be equipped with one of the following ELITE filtering systems. If your machine already has one of this systems and you need information or help, please refer to the manual of the filtering system.

9.3.1.1.FILTRAmaq UNO

Filtering system integrated in the machine to save space.

9.3.1.2.FILTRAmaq SOLO

Independent filtering system for one machine.

9.3.1.3.FILTRAmaq PRO

Centralized filtering system for up to 5 machines.

10.WARRANTY

All our machines are tested before being shipped. However, there can always be defects that are not observable at first sight.

Our machines are guaranteed against manufacturing or material defects under normal use and maintenance conditions.
The period of this guarantee is 12 months from the date of purchase and consists of the replacement of defective material.

The guarantee will be automatically canceled in the event of a modification outside our company. Or in manifest cases of misuse of the machine.

The guarantee does not include parts subject to normal wear due to use such as skids, lubrication cartridge, abrasives, etc.

11.DOWNLOAD MANUAL

12.FAQ