Mestra R-080500 Manual De Instrucciones página 7

The R-080500 is a complete polisher equipped with an exhauster and other safety devices to European
EC standards. It is especially designed to polish and grind small workpieces for the dental prothesis sector. It is
supplied from the factory with the following accessories:
- 1 left-hand thread brush-holder (F)
- 1 right-hand thread brush-holder (H)
- 1 right-hand thread stone holder (not shown in figure)
- 2 rubber screens
As an option the unit can be fitted with a mill holder (Mestra catalogue ref. R-080190) for 2.35 mm shank
milling cutters. Left-hand brush-holders and right-hand wheel holders are also available.
INSTALLATION
•
Carefully unpack the R-080500 polisher.
•
Set up the unit on a flat surface away from any sources of heat or vibration. A well ventilated area should be
chose.
• Connect the unit to a 230 V, 50/60 Hz earthed power outlet.
• Mount the brush and/or grinding wheel on the motor shafts.
MOUNTING THE BRUSH IN THE BRUSH-HOLDER
To attach the brush correctly to the brush-holder (F) proceed as follows:
1. Choose a suitable brush-holder. For mounting on the right-hand end of the motor shaft as seen from the
front of the unit, choose a right-hand (clockwise) thread brush-holder so that the friction torque tightens it
during operation. Likewise, for mounting on the left-hand end of the unit choose a left-hand (anti-
clockwise) thread brush-holder.
2. Attach the unthread part of the brush-holder to a bench vice.
3. Insert the brush into the brush holder, ensuring that the axis of the brush-holder is perpendicular to the plane
of the brush.
4. Thread the brush onto the brush-holder as tightly as possible by hand.
5. Take the holder and brush assembly out of the bench vice.
6. Visually check the perpendicularity of the brush-holder axis to the plane of the brush by spinning the
assembly in your hands.
MOUNTING GRINDING WHEELS ON THE WHEEL-HOLDER
1. Select the wheel-holder and remove the wheel attachment screw from the end.
2. Secure the other end of the wheel-holder to a bench vice.
3. Mount the wheel in the wheel-holder.
4. Secure the wheel in the wheel-holder by tightening the wheel attachment screw with a cross-head
screwdriver.
5. Remove the wheel-holder/wheel assembly from the bench vice.
6. Visually check the perpendicularity of the wheel-holder axis to the plane of the wheel by spinning the
assembly in your hands.
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