Kegel FLEX 17-5801 Operator's Manual page 152

The above speed pots are sealed in place after being adjusted in factory using liquid tape.
Balancing the Two Walker Drive Motors
The two drive motors are "balanced" with a long 22 AWG yellow wire. This wire is used on
either the 7-pin or the 10-pin drive motor, depending on which motor needs more
resistance.
The wire only receives current while the machine is traveling on the approach and it is only
creating a small amount of resistance in the circuit to balance the two motors so they will
run at the same speed. A longer length of wire will make the motor run slower.
To balance the motors on the Walker, first determine which motor is using or needs the
resistance wire. The instructions below are written as if there is no resistance wire.
1. Go to the MOVE MACHINE screen and position the machine as if it were going to the
next lane.
2. Line the rear panel up with the approach boards so they are parallel with each other.
3. Press the DOUBLE UP ARROW and stop the machine where desired.
4. Check to see if the rear panel is still parallel with the approach boards. If one side
only advances ½ an inch this may not be a concern (unless you
want it absolutely perfect).
5. Press the DOWN ARROW and observe if the machine advances
back to where it started.
6. Do this exercise, several times, to see if the machine repeats its
movements forward and back.
7. If the machine repeats its error and is off by as much two boards,
then replace the proper jumper with a wire between 6 and 8 feet
(1.8 to 2.4 m) to start with. If the machine does not travel the
same in both directions then you will need to split the difference when adjusting the
resistance wire.
8. If the yellow resistance wire is used to control the 7-pin motor it will be connected to
the two terminals on the left hand side of the black box (red wires).
9. If the yellow resistance wire is used to control the 10-pin motor it will be connected
to the two terminals on the right hand side of the black box (white wires).
10. When stripping the wire, remove ½ inch of the insulation so you can fold the wire in
half when inserting into the terminal block.
11. Be certain to turn the power off when adjusting the wire length
12. After you have installed the length of wire (which we hope is a little long to start),
repeat steps 1 through 5 and observe the movement of the Walker.
13. Shorten the yellow wire if needed in 6 to 12 inch increments (~15 to 30 cm) and then
test the results. Continue until the motors are balanced and the machine travels
straight. Put the excess wire inside the black box along with the jumper when
finished.
TECHNICAL
The length of wire used will vary from machine to machine and it may be necessary to
move the resistance wire to the other motor after both motors break in.
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