3.2 Drive belt replacement
• Set motor switch to the "OFF" position.
• Pull out power plug.
• Remove belt cover (Figure 8).
• Loosen hex wrench (Figure 9).
• Release tension by rotating the spindle (Figure 10).
• Replace drive belt.
• Tension drive belt by rotating the spindle. For the
correct belt tension see Chap. 3.3.
• Tighten hex wrench again.
• Replace belt cover.
NEVER operate machine without the belt
cover installed!
Use only original drive belts!
3.3 Tensioning belt
Incorrect belt tension will cause premature
wear of the drive belt, the pulleys and the
bearings.
• Loosen hex wrench (Figure 9).
• Tension belt by rotating the spindle (Figure 10).
• Adjust belt tension so the belt can be moved ap-
prox. 8 mm up and down.
Check the belt tension after operating a
new belt for a short time, because new
drive belts tend to stretch after operation.
3.4 Replacing bulbs
Before replacing bulbs set the light switch
to the "OFF" position.
Use only original bulbs, see spare parts list.
Installation of incorrect bulbs may destroy
the 24V transformer!
3.5 Replacing fuses
• Set motor switch to the "OFF" position.
• Pull out power plug.
• Place grinder on one side.
• Loosen screws and remove bottom plate (Fi-
gure 11).
• Replace faulty fuse (Figure 12):
- F1: motor fuses (2 pieces)
- F2: light fuse
When replacing fuses, only use fuses with the same
rating as the original.
Refer to the "Technical Specifications" section.
NEVER use fuses with a higher rating!
• Reinstall the bottom plate.
4. Spare parts
See the attached spare parts list for the spare parts
numbers.
5. Scope of delivery
1
Demco high-speed grinder
1
drive belt (short, for low speed)
1
instruction manual
1
spare parts list
- 3 -
EN