MEEC TOOLS 024232 Grinding Machine for Saw Blades Instruction Manual

GRINDING MACHINE FOR SAW BLADES
OPERATING INSTRUCTIONS
Original instructions

024232
GRINDING MACHINE FOR SAW BLADES

024232 Grinding Machine for Saw Blades

Jula AB reserves the right to make changes to the product. Jula AB claims copyright on this documentation. It is not allowed to modify or alter this documentation in any way and the manual shall be printed and used as it is in relation to the product. For the latest version of operating instructions, refer to the Jula website.

EU DECLARATION OF CONFORMITY
Jula Item numbe
024232
Model no.: 2003

Jula AB, Box 363, SE-532 24 SKARA, SWEDEN
This declaration of conformity is issued under the sole responsibility of the manufacturer.
GRINDING MACHINE FOR SAW BLADES
230V, 110W, 45W(S1), S3: 50% (900s ON, 900s OFF)
Conforms to the following directives, regulations and standards:

61000-3-3:2013+A1
RoHS 2011/65/EU + 2015/863| EN 50581:2012

This product was CE marked in year:
Skara 2022-08-16

Mattias Liv
BUSINESS AREA MANAGER (Signatory for Jula and authorised to compile the technical documentation.

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SAFETY INSTRUCTIONS

GENERAL SAFETY INSTRUCTIONS FOR POWER TOOLS
WARNING!
Read all the safety instructions and other instructions. Failure to follow all the instructions and safety instructions can result in the risk of electric shock, fire and/ or serious personal injury. Save all warnings and instructions for future reference. The term “power tool” in all the warnings below refers to mains-powered (corded) or battery powered (cordless) power
tools.

WORK AREA

• Keep the work area clean and well lit. Dark and cluttered work areas increase the risk of accidents and injuries.
• Do not use power tools in explosive environments, such as in the vicinity of flammable liquids, gas or dust. Power tools produce sparks that can ignite dust and fumes.
• Keep onlookers, especially children, at a safe distance when using power tools. You can easily lose control of the power tool if you are distracted.

ELECTRICAL SAFETY

• The plug on the power tool must match the power point. Never modify the plug in any way. Never use an adapter with earthed power tools. Unmodified plugs and matching power points reduce the risk of electric shock.
• Avoid body contact with earthed surfaces such as pipes, radiators, cookers and refrigerators. There is an increased risk of electric shock if your body is earthed.
• Do not expose power tools to rain or moisture. There is a greater risk of electric shock if water gets into a power tool.
• Be careful with the power cord. Never use the power cord to carry or pull the tool, or to pull out the plug from the mains socket. Keep the power cord away from heat, oil, sharp edges and moving parts. Damaged or tangled power cords increase the risk of electric shock.
• If the power tool is used outdoors, only use an extension cord approved for outdoor use. Cords intended for outdoor use reduce the risk of electric shock.
• If it is absolutely necessary to use power tools in damp conditions, use a mains connection protected by a residual current device (RDC). Using an RCD reduces the risk of electric shock.

PERSONAL SAFETY

• Stay alert. Pay attention to what you are doing, and use your common sense when working with power tools. Never use power tools if you are tired or under the influence of drugs, alcohol or medication. A moment of inattention or carelessness can result in serious personal injury.
• Use personal safety equipment. Wear safety glasses or a visor. Depending on the type of tool and how it is used, safety equipment such as dust masks, non-slip safety shoes, safety helmets and ear protection reduce the risk of personal injury.
•  Avoid accidental starting. Check that the power switch is in the OFF position before plugging in the plug or battery, or lifting/ carrying the tool. Carrying a power tool with your finger on the switch or connecting a tool to the mains supply when the switch is in the ON position increases the risk of accidents and injuries.
• Remove adjuster keys/spanners before switching on the power tool. Spanners or the like that are left in a rotating part of the power tool can cause personal injury.
• Do not overreach. Always maintain a firm footing and good balance. This ensures better control over the power tool in unexpected situations.
• Wear suitable clothing. Do not wear loose-fitting clothing or jewellery. Keep your hair, clothing and gloves away from moving parts. Loose-fitting clothing, jewellery and long hair can get caught in moving parts.
• If dust extraction and dust collection equipment is available, this should be connected and used correctly. The use of such devices can reduce the risk of dust-related problems.
• Do not allow familiarity with similar tools to lead to exaggerated self-confidence and to neglect the safety instructions for the tool. A moment of inattention or carelessness can result in serious personal injury.

USING AND LOOKING AFTER POWER TOOLS

• Do not force the power tool. Use the correct power tool for the planned work. The tool does the job better and more safely when used at the rate for which it was designed.
• Do not use the power tool if it cannot be switched on and off with the power switch. Power tools that cannot be controlled with the power switch are dangerous and must be repaired.
• Pull out the plug and/or remove the battery before making any adjustments, changing accessories or putting the power tool away. These safety precautions reduce the risk of accidentally starting the power tool.
• Store power tools out of the reach of children when not in use. Never allow children, or anyone who is unfamiliar with the power tool and these instructions, to use the tool. Power tools are dangerous if used by inexperienced persons.
• Maintain power tools and accessories. Check that moving parts are properly adjusted and do not jam, and that no parts are incorrectly fitted or damaged. Check for other factors that could affect functionality. If a power tool is damaged it must be repaired before it is used again. Many accidents are caused by poorly maintained power tools.
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to jam and are easier to control.
• Use the power tool, accessories and bits etc., in accordance with these instructions, taking into account the actual working conditions and the work that is to be done. It can be dangerous to use power tools for purposes other than those for which they are intended to be used.
• Keep handles and grips clean, dry and free from oil and grease. Greasy handles and grips make it difficult to hold and control the tool in unexpected situations.

SERVICE

• Power tools must only be serviced by qualified personnel using identical spare parts. This will ensure that the power tool remains safe to use.

SAFETY INSTRUCTIONS FOR
BENCH GRINDER

• Do not use damaged accessories. Always check before use that grinding wheels and other accessories are not cracked or otherwise damaged, and that steel brushes do not have loose or broken wires. When the accessory has been checked and fitted, hold the product at a safe angle and run it at maximum speed for 1 minute. If the accessory is damaged it will probably break during this test.
  – Disregard “and that steel brushes do not have loose or broken wires” for products not intended to be used with steel brushes.

• Only use accessories with at least the same rated speed as the product. Accessories that rotate faster than their rated speed can shatter and cause personal injury.

• Note that wires can come loose from steel brushes, even during normal use. Do not overload the wires by pressing the steel brush too hard against the surface. Wires from steel brushes can easily penetrate through thin clothes and/or skin.
  – The above safety instructions only apply to products intended to be used with steel brushes.

• Never grind with the edge of a grinding wheel. Grinding with the edge can cause the wheel to shatter.

MINIMISATION OF NOISE AND VIBRATION

• Plan the work so that exposure to heavy vibrations is spread over a longer period.
• To reduce noise and vibrations when in use, limit the time the tool is in use, and use low-power/vibration mode and suitable safety equipment.
• Take the following precautions to minimise the risks of exposure to vibrations and/or noise:
  – Only use the tool in accordance with these instructions.
  – Check that the tool is in good condition.
  – Use accessories in good condition, and which are suitable for the purpose.
  – Keep a firm grip on the handles/ grips.
  – Maintain and lubricate the tool in accordance with these instructions.

SYMBOLS

| Read the instructions.
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| Wear ear protection.
| Wear safety glasses.
| Safety class II
| Approved in accordance with the relevant directives.
| Recycle discarded product in accordance with local regulations.

TECHNICAL DATA

Always wear ear protection!
The declared values for vibration and noise, which have been measured according to a standardised test method, can be used to compare different tools with each other and for a preliminary assessment of exposure. The measurement values have been determined in accordance with EN 62841-3-4:2016.

WARNING!
The actual vibration and noise level when using tools may differ from the specified maximum value, depending on how the tool is used and the material being processed.
It is therefore necessary to determine which safety precautions are required to protect the user, based on an estimate of exposure in actual operating conditions (taking into account all stages of the work cycle, e.g. the time when the tool is switched off and when
it is idling, in addition to the start-up time).

DESCRIPTION

The product is intended to be used for sharpening circular saw blades with a diameter of up to 400 mm.

Parts

1. Motor
2. Blade holder
3. Support for saw blade
4. Handle
5. Power switch
6. Base plate
   FIG. 1

ASSEMBLY

Remove the lock nut, washers, spring and centring piece from the blade holder.
FIG. 2
Put the blade to be sharpened on the screw and replace the parts as shown in the drawing.

1. Lock nut
2. Washer
3. Spring
4. Washer
5. Centring piece
6. Saw blade
   FIG. 3

The saw blade must be centred, but not locked. Do not tighten the lock nut so hard that the saw blade cannot rotate. Check that the centring piece is not at an angle.

USE

IMPORTANT:
Check that the power switch is switched off before plugging in the plug. Switch off the product, pull out the plug and wait until all moving parts have completely stopped before cleaning, adjusting, maintenance and/or replacing accessories.

ADJUSTING THE SAW BLADE
Adjust the position of the saw blade in relation to the grindstone as shown in the figures below to sharpen the front and back of the tooth. The surface to be sharpened must be parallel with the corresponding side of the grindstone.

1. Back of tooth
2. Front of tooth
3. Bottom of tooth
   FIG. 4

Positioning of grindstone when sharpening front of tooth.
FIG. 5
Positioning of grindstone when sharpening back of tooth.
FIG. 6

1. Adjust the arm of the blade holder and if necessary the position of the motor, depending on the diameter of the saw blade.
2. Undo the lock nut and pull out (2) and turn (1) the arm. The arm can also be moved in the slot in the base plate (3). With these adjustments the product can be used for saw blades with a diameter of 90 to 400 mm. The motor can be moved on the base plate (4), which is necessary when sharpening saw blades with a large diameter.
3. Adjust the saw blade to the correct position in relation to the grindstone.
   The grindstone is moved forward and back with the handle when sharpening. Lift up the handle to adjust and align the grindstone to the bottom of the tooth.

Examples of adjustments for different diameters of saw blades

1. Saw blade 90 mm: Motor moved back.
2. Saw blade 230 mm: Motor moved forward to avoid collision with the arm.
3. Saw blade 400 mm: Motor moved forward, arm turned away so that the lock nut does not collide with the saw blade.
   FIG. 7

Depth stop
The depth stop should be set when the arm, motor and saw blade have been correctly adjusted.
To set the depth stop, place the grindstone a few millimetres from the bottom of the tooth so that the front of the tooth can be sharpened. Tighten the lock screw to lock the depth stop in place.
FIG. 8

Support for saw blade
For better stability and alignment the support for the blade should be placed as close to the grindstone as possible so that the blade is resting against it.
FIG. 9

Sharpening of set saw blade
The motor can be angled to sharpen the teeth on the blade to the required angle. Undo the lock nuts on each side of the motor and adjust to the required angle. The motor can be angled up to about 25° both ways.
FIG. 10
The motor can go against the base plate when adjusting larger angles. In which case undo the clamping screw on the motor bracket, turn the motor 180° and tighten the screw.

Sharpening circular saw blade
When all the adjustments have been made place the lock pin so that the blade support is pressed lightly against the saw blade as shown in the figure.
FIG. 11
Start the product and use the handle to move the grindstone against the tooth until it reaches the set depth.
Pull back the grindstone with the handle, turn the saw blade and sharpen the next tooth. Repeat until all the teeth are sharpened.
If the blade is set sharpen every other tooth, then change the angle and sharpen the rest of the teeth.
To sharpen the back of the teeth, adjust the grindstone according to the instructions.

MAINTENANCE

IMPORTANT:
Switch off the product, pull out the plug and wait until all moving parts have completely stopped before cleaning, adjusting, maintenance and/or replacing accessories.
Keep the product clean and dry. Clean the product with a dry or damp cloth. Lubricate moving parts at regular intervals. Do not use strong or flammable detergents.
The motor is maintenance-free. Keep the ventilation openings on the product clean to avoid overheating.

2022-10-06
WWW.JULA.COM
© JULA AB
JULA AB
BOX 363, 532 24 SKARA, SWEDEN

References

• Jula – products for home and garden

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