INSTRUCTIONS FOR USE
SCANGRIND WET GRINDER
Thank you for choosing a
SCANTOOL
product. The
SCANGRIND
wet grinder is a Danish quality product
and for you to obtain the best results from using the grinder please read the following instructions carefully.
OPERATING THE GRINDER
Before starting the motor check that:
1. All adjustments and checks are made with the machine disconnected from the power supply.
2. Stone can be revolved freely by hand
3. The tool rest is in position, adjusted to within 3 mm. (1/8") of the periphery face of the stone, and
firmly secured.
WHEN STARTING AND USING THE MACHINE
1 Fill the watercontainer up to 1/2 capacity.
2
Plug into prescribed power supply.
3
Press switch for required direction of rotation.
4 Adjust the tool rest to obtain correct grinding angle.
5 Check that the stone, especially a new replacement stone is in sound condition by allowing the machine
to run up to maximum speed and remain there for at least 30 seconds before it is put into use.
6 Allow the machine to run up to full speed before applying the workpiece to be grinded.
7 Feed the workpiece smoothly onto the grinding stone and avoid harsh pressure and "bumping" into the
wheel.
8 Always apply light but firm pressure, and allow the stone to rotate at maximum possible speed.
9 Scangrind can be used max. 30 minutes/hour.
10 Do not arrest the stone by applying pressure to it at the conclusion of the grinding operation. Always
allow the machine to run down freely to stop.
11 Once a year, place a few drops of oil on the selflubricating wheel bearings (lubricating holes are located
in the middle of each bearing block).
12 Unplug before cleaning and empty water over the rear of the machine.
CHANGING THE STONE
(Look at the instruction at the bottom of the machine)
1) Check the stone to ensure that the outside diameter does not exceed the recommended size, and that the
bore is correct.
2) Unscrew the two outermost screws in each bearing block, so that these can be removed (the screws in
the middle is only for lubrication). Remove the shaft with fitted parts and place it resting on the toothed
wheel. Remove brass bearing, v-ring, two plastic nuts and a plastic flange. The stone can now be removed
and new fitted.
3) When mounting the stone take care to tighten the just enough to hold the wheel firmly. Avoid excessive
clamping pressure.
4) After having mounted the stone, start the machine and check that the stone runs smoothly. If not loosen
the two nuts lightly and turn the stone a little. Tighten the nuts again and check the running. This procedure
is repeated until the stone runs smoothly.
GENERAL
The machine is rated for maximum twenty minutes continuous operation. After thirty minutes of continuous
operation the machine must have a break for at least the same number of minutes. The specially developed
wet stone is designed to stay in water, but it is recommended to empty the water container as this helps
keeping the machine clean.
The machine has noise level below 70 Dba.
STONE CARE
Stone spare grinding stones flat on a firm surface with a layer of compressible material between the stones
and the storage surface. Similar material should be placed between stones when a number are being stored.
As the grinding stone is used it will wear. It is recommended that the stone is replaced when the diameter
has been reproduced approximately 25% below the original size (e.g. 200 mm to 150 mm).
Wear on the stone can cause eccentricity leading to machine vibration and "bouncing" of the workpiece. To
obtain balance and efficient grinding the stone must be redressed. A piece of hardened steel can be used to
redress the stone. The stone must be completely dry when redressing. The hardened piece of steel is held
on the tool rest and pushed slowly towards the stone while the stone is rotating. This procedure is continued
until full contact with the stone is obtained.
GRINDSTONES:
Different grindstones are avaible for different purposes:
- Standard grey NK 220 Special wet stone for every grinding job.
- Green carbide for very hard metals, glass, stone, etc.
