5.17 Elliptical Fitness Crosstrainer
Page 7
Procedure 4.1 - Calibrating the Lift Motor
1.
In order to calibrate the lift motor, it is necessary to disconnect the lift motor from the ramp
assembly.
2.
Set the on/off switch in the “off” position. Remove the six screws that retain the front half of
the front cover to the rear half of the front cover and remove the front half cover.
3.
Remove the retaining clip from each lift nut mounting pin. Support the lift ramp assembly
and remove the lift mounting pins from the lift nut. Raise the ramp and support it from the
handlebars using a bungi cord (See Diagram 4.1).
Diagram 4.1 - Supporting the Ramp
4.
Connect a DC voltmeter between the blue and brown wires of the lift motor connector. Set
the on/off switch in the on position. Operate the ramp until the DC voltmeter reading is as
close to 1.1 VDC as possible. Set the on/off switch in the off position. Set the meter, while
still connected between the blue and brown wires, to read ohms. Grasp the lift motor drive
screw and rotate it until the ohmmeter reads 240
Ω
(See Diagram 4.2
)
5.
Rotate the lift nut on the lift motor drive screw until the distance between the top surface of
the lift nut and the top of the lift motor drive screw is three inches. If the lift motor drive screw
is allowed to rotate while lift nut is being positioned, the ohmmeter will no longer read 240
Ω
.
The lift calibration number must be 240
Ω
. The distance measurement must be correct and
the ohmmeter must read 240
Ω
for the lift calibration to be correct.