LAUNCH KWB-421 Wheel Balancer User’s Manual
9
For the equipment using single phase power supply, when starting the operation push the wheel by
hand one time to assist starting and prolonging service life.
Make sure all the inputted measurement data are correct. Press “R” key , the value of “A”,”L”,”D”
could be detected automatically.
Make sure the selected balance mode is suitable for the outline of wheel rim.
Make sure the lock nut is tightened.
Do not strike the spindle shaft when installing or removing the wheel.
When balancing the rim with a clip-on lead block, use a balancing weight to stick the lead block on the
rim edge. After the balancing ends, strike it close on the ground. Do not strike it on the spindle shaft in
order to avoid the damage of the sensor. To keep the adhered lead block being stuck firmly, before
adhering, you must clean the adhering surface and if it is needed should use the organic solvent or
detergent.
5. Maintenance and Repair
5.1 Self Calibration
The self-calibration operation is finished in the manufacturer’s plant. This operation could be re-do if the
machine services too many years or the spares are charged or there is a big imbalance value. Install a
middle-scale wheel (which has a rim diameter 13 or 14 inch) on the spindle shaft. Input the correct value of
“A”,”L” and “d”.
Note: The wheel chose for self-calibration should be in good condition and the value inputted
should be correct else measure error could be possible.
Use a balanced wheel for self-calibration
Ⅰ
. Press “R” key, half of a second later, meanwhile press “START”
key, ‘“CAL”
－
“CAL”’displays on the control window and all the
indicators light and blink. Withdraw the fingers when all the
indicators put out.
Ⅱ
. Press “START” key, the wheel revolves and brakes
automatically, ‘“100”
－
“ADD”’ displays on the control window.
Move the wheel until all six lights on left side are turned on. Attach
an 100g weight at the highest vertical position (12 o’clock position)
on the inner side of the rim.
III. Press “START” key, the wheel revolves and
brakes automatically, ‘ADD’-‘100’ displays on the control window.
Move the wheel until all six lights on the right side are turned on.
Remove the weight from the inner side of the rim and attach it to
the highest vertical position (12 o’clock position) on the outer side
of the rim.
