Replacing Mandrels; Adjusting Collet; Setting Spindle Speed; Cleaning Collet - CMP Demco E96-230 Instrucciones Para El Servicio

Instructions for operator
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 protec-
tion.
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 (Fi-
gure 6).
EN
• Insert the hex wrench through the spindle nose.
• Change adjustment (Figure 7):
- loosen: counterclockwise
- tighten: clockwise
• 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 posi-
tion "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 (Fi-
gure 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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