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Repair/Replacement and Calibration
7. Refer to the ECG monitor service manual to set the treadmill to
service mode.
8. Loosen the screw that holds the grade pot sprocket to the
grade pot. This may require removing then replacing the two
Phillips screws from the pot assembly bracket.
9. Place a flathead screwdriver through the handrail bracket and
turn the pot shaft until the ECG monitor displays zero grade.
10. Position the bracket so that the gear is meshed with the rack
gear teeth (illustrated below) and tighten the screws loosened
in Step 8.
Caution
To prevent damage when replacing the bracket, don't
mesh gears too tightly. Leave
1/16
inch clearance for each
gear.
11. Take the ECG monitor out of service mode.
12. Verify that the treadmill operates through its full grade range
(0
-
25%) and that the treadmill is nearly all the way to the top
of the the rack gear when the display reads 25%.
13. Turn off the power and disconnect the power cord from the
power outlet.
14. Reassemble the siderails and bumpers.
Speed and Grade The circuitry in the treadmill is self-calibrating for speed and
grade. No additional calibration is required.
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