Installation
When you receive your unit, there are several things you should do immediately:
1. Observe the condition of the shipping container and report any damage immediately to the commercial carrier that
delivered the product.
2. Verify that the part number you received is the same as the part number listed on your purchase order.
3. Place polishing lathe on solid bench. The polishing lathe must be installed on a rigid mounting surface.
4. Check polishing lathe nameplate to make certain the rating is correct for the power source, voltage and
frequency.
Operation
WARNING: Do not operate this polishing lathe until you are sure that you are completely familiar with the safe
operation of the polishing lathe, all accessories and safety equipment. Improper use can lead to
severe injury. This manual defines proper use of this equipment. Contact Ray Foster Dental
Equipment if you do not understand any procedure or operation concerning this polishing lathe or
this manual.
WARNING: When starting the polishing lathe for the first time, or after installing a replacement wheel, it is
most important that the operator stand aside for at least one minute of rotation at full speed. This
is the correct practice since wheels can disintegrate if they have received damage during shipping
or handling.
Check that the On/Off switch is in the “OFF” position, and the shaft moves freely. When starting the polishing lathe for the
first time or after replacing a wheel, it is important that the operator stand aside for at least one minute of operation at
speed. This will ensure that operation will be safe from debris. After connecting polishing lathe to power source, turn
switch on. polishing lathe should come up to speed smoothly and without vibration. If polishing lathe does not, shut
polishing lathe off immediately and determine reason. Always keep hands at least 2 inches from wheels. If the work piece
is small, use a holder to keep hands 2 inches or more from wheels. Use extreme care when polishing irregularly shaped
or small objects as they can be caught in the wheel and hurled outward with damaging force. Always polish from the front
of the machine. If the work piece is caught by the wheel, the wheel will normally spin the piece downward. Polish on face
(periphery)of the wheel only.
“Quick Chuck” on Laboratory Lathe model PR52 allows changing of chuck with motor running. On ejector type shaft,
allow polishing lathe to come to a complete stop with motor off when changing chuck.
Maintenance
WARNING: Never install a wheel that is damaged, such as a chip or crack on any surface. A damaged wheel
can disintegrate while rotating at a high RPM or when work is placed against the wheel. This can
severely harm the operator or others in the area.
Replace worn wheel as necessary. The wheel should be replaced after the diameter is reduced by 2 inches from original
size.
Motor and pulley bearings are lubricated for life and do not require additional lubrication.
For Ray Foster polishing lathes supplied with “Quick Chuck”, see separate user Manual for Quick Chuck.
