Demco E96-230 Instruction Manual
Rev. 0907 A
Demco
Model E96-230
Manufactured by:
CMP Industries LLC • 413 N. Pearl St. • Albany, NY 12207 / USA
Bedienungsanleitung
Instruction manual • Mode d´emploi
Istruzioni d’uso • Instrucciones para el servicio
Инструкция по эксплуатации
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EN
Demco High-Speed Grinder
Model E96-230
ENGLISH
Introduction
The Demco E96 high-speed grinder is a compact precision grinder for use in dental laboratories.
It is used for grinding or cutting dental casts and materials.
The grinding body with mandrel is securely fastened
in a collet.
A lever system in the spindle is used to stop a
quick-stop coupling, open the collet and replace the
mandrel.
The work area is illuminated by two high-intensity
bulbs.
A tinted eye-protection shield in front of the work area
protects the operator from injury.
The belt and pulleys are protected by a cover to
protect the operator from contact with them during
operation.
Observe the information on dangers and
the warnings in the section „Owner‘s Manual“.
Instruct the user with this manual on the
area of operation, the possible dangers
during operation and the operation of the
machine.
This instruction manual must be accessible to the operator at all times.
For more information see the section „Owner‘s Manual“
Symbols
The following symbols are used in this manual and on
the machine:
Danger
Danger of injury
Electrical power
Danger of electric shock
Caution
If this instruction is not observed the machine may be damaged
Note
Gives useful information that makes operation of the machine easier.
Disconnect the machine from mains power
and remove the plug before opening it.
Wear safety glasses
Danger
Danger of injury to hand.
Other symbols are explained as they are used.
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Content
Introduction ...................................................................................................... 7
Symbols ............................................................................................................... 7
Instructions for operator
1. Installation and operation .....................................................8
2. Operation ................................................................................................. 8
2.1 Controls
.............................................................................................. 8
2.2 Replacing mandrels ............................................................... 8
2.3 Adjusting collet ............................................................................ 8
2.4 Setting spindle speed
........................................................... 8
3. Cleaning and maintenance ................................................ 8
3.1 Cleaning collet ............................................................................. 8
3.2 Drive belt replacement ........................................................ 9
3.3 Tensioning belt ............................................................................9
3.4 Replacing bulbs ......................................................................... 9
3.5 Replacing fuses ......................................................................... 9
4. Spare parts ............................................................................................ 9
5. Scope of delivery ............................................................................ 9
6. Troubleshooting ............................................................................ 10
Owner‘s Manual
A. Area of application ..................................................................... 11
A.1 Designated use ....................................................................... 11
A.2 Environmental conditions (in accordance with
DIN EN 61010-1) ................................................................... 11
B. Dangers and warnings ......................................................... 11
C. Approved persons ...................................................................... 11
D. Preparing for operation ........................................................ 11
E. Repair ........................................................................................................12
F. Specifications ...................................................................................12
G. Limitation of liability ..................................................................12
Original
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EN
1. Installation and operation
1. Install the machine on strong, level workbench.
2. Makes sure that the mains voltage conforms to the
voltage printed on the grinder name plate.
3. Adjust the safety shield for maximum eye protection.
4. Set both switches to the “OFF“ position.
5. Plug in power plug.
The Demco high-speed grinder is now ready for operation.
2. Operation
2.1 Controls
(See Figure 1 and Figure 2)
A Lever (coupling, brake, clamping lever)
B Motor switch
C Light switch
D Collet
E Safety shield
F1 Motor fuse (2 pieces)
F2 Light fuse
2.2 Replacing mandrels
Set motor switch to “OFF“.
Move lever slowly and smoothly from position “A“
(Figure 3) to position “B“ (Figure 4) to uncouple and
brake the spindle and to open the collet.
Remove mandrel, install new mandrel.
Move lever back to position “A“ to close the collet.
Do not close the collet without a mandrel in
place, otherwise the spindle will bind.
Do not actuate brake too fast, otherwise the
item being ground may come loose from
the mandrel and cause unnecessary wear.
The spindle only runs if a mandrel or other
tool is positioned in the collet.
2.3 Adjusting collet
If the mandrel is loose while the lever is in position “A“,
the collet must be readjusted.
Set motor switch to the “OFF“ position.
Move lever slowly and smoothly from position “A“
(Figure 3) to position “B“ (Figure 4) to uncouple and
brake the spindle and to open the collet.
Remove mandrel.
Remove collet key from the lever (Figure 5).
Rotate collet counterclockwise and remove it (Figure 6).
Insert the hex wrench through the spindle nose.
Change adjustment (Figure 7):
loosen: counterclockwise
tighten: clockwise
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Reinstall the collet and tighten it (the collet must be
screwed in completely while the lever is in position
“B”).
Replace collet key in lever.
Install mandrel and close collet again (lever in position “A“).
If the collet does not close in this step,
replacement of the collet may be necessary
(see spare parts list).
2.4 Setting spindle speed
The highest speed is always set on delivery.
To set the grinder to low the speed:
Set motor switch to the “OFF“ position.
Unplug power cord.
Remove belt cover (Figure 8).
Loosen hex wrench (Figure 9).
Release belt tension by rotating the spindle (Figure 10).
Remove drive belt.
Install attached shorter low speed belt onto the outer
motor and spindle pulleys.
Tension drive belt by rotating the spindle. For the
correct belt tension see Chap. 3.3.
Tighten hex wrench.
Replace belt cover.
NEVER operate machine without the belt
cover installed!
3. Cleaning and
maintenance
3.1 Cleaning collet
Daily:
remove collet, clean grit off and apply a light film of
oil.
Set motor switch to “OFF“ position.
Move lever to position “B“.
Remove the collet key from the lever (Figure 5).
Rotate collet counterclockwise and remove it
(Figure 6).
Clean and oil collet.
Replace collet and tighten it (the collet must be
screwed in completely while the lever is in position
“B”).
Apply a light film of oil to the collet only, do
not oil any other part of the spindle!
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Instructions for operator
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