Maintenance - KNOVA KN BD-46B Manual

ADJUSTMENTS
SQUARING THE WORKTABLE TO THE SANDING DISC
• Unplug the belt/disc sander.
• Using a combination square, check the angle of the
worktable with the sanding belt.
• If the work table is not 90° with the disc, loosen the table
lock knob and tilt the table.
• Adjust work table square to the sanding disc and retighten
the table lock knob.

MAINTENANCE

WARNING
When servicing, use only identical
replacement parts. Use of any other parts may create
a hazard or cause product damage.
WARNING
Always wear eye protection with side
shields marked to comply with ANSI Z87.1 during
product operation. If operation is dusty, also wear a
dust mask.
WARNING
Before performing any maintenance, make
sure the tool is unplugged from the power supply and
the switch is in the off ( O ) position. Failure to heed
this warning could result in serious personal injury.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
WARNING
Do not at any time let brake fluids,
gasoline, petroleumbased products, penetrating oils,
etc., come in contact with plastic parts. Chemicals can
damage, weaken or destroy plastic which may result
in serious personal injury.
LUBRICATION
All of the bearings in this tool are lubricated with a sufficient
amount of high grade lubricant for the life of the unit under
normal operating conditions. Therefore, no further lubrication
is required.
CHANGING DRIVE BELT
• Unplug the belt/disc sander.
• Using a phillips head screwdriver, remove the screw
in the center of the belt cover.
• Remove the cover.
Table
lock knob
• Loosen the three tension screws inside the pulley housing
then push the housing down
to loosen the belt
tension.
• Remove the old
drive belt.
• Fit the new drive
belt on the drive
pulley first then
on the motor
pulley.
Pulley
housing
• Test belt tension by
squeezing the belt
with your fingers.
• Push the pulley
housing up to
increase belt
tension until there
is about 1/4 inch
of give.
• Tighten the tension
screws securely.
• Using a phillips
head screwdriver,
reinstall the
pulley cover
and the screw.
Tighten
securely
Phillips
screw
11
Combination
square
Motor
pulley
Drive
belt
Belt
cover
Fig. 21
Drive
pulley
Tension
screw
Fig. 22