Nilfisk-ALTO S12 - Manual (Page 10)

Page -10- CLARKE TECHNOLOGY Symphony Upright Vacuum Operator's Manual
MAINTENANCE
This section describes the procedures that must be
done by the operator.
WARNING: To prevent injury, always turn
off the switch and remove the electrical
plug from the electrical outlet before
changing the brush, belt, or filter bag and
before leaving the machine.
WARNING: To prevent electrical shock,
always turn off the switch and remove the
electrical plug from the electrical outlet
before doing any repairs or maintenance
to this machine.
WARNING: Belt pulleys can become hot
during normal use. To prevent burns, do
not touch the belt pulley when servicing
the drive belt.
WARNING: Maintenance and repairs must
be done by authorized personnel only.
The Belt to Drive the Brush
This machine uses a round rubber belt to drive the
brush. Check the belt frequently. Replace the belt if
the belt slips on the brush. Remove hair and threads
from the brush roll and the motor shaft pulley before
replacing the belt.
How to Replace the Belt
To replace the drive belt, follow this procedure:
1. Make sure the electrical plug is removed from the
outlet.
2. Put the machine upside down.
3. To remove the bottom plate, turn the two cam
latches on the sides of the plate.
4. Remove the worn belt from the pulley on the motor
shaft. See figure 4.
5. To remove the brush, pull the brush out of the slots
in the frame.
6. Clean the vacuum opening in the base of the
machine.
7. Check the bristles of the brush for wear. If the
bristles are worn, see the section "What to Do
about the Wear of the Brush."
8. Put a new belt around the pulley on the brush.
Align the brush roll pulley with the belt guide. See
figure 5.
Figure 4
Figure 5
Motor Pulley
Belt
Guide