Calibrating The Lift Motor - Precor TRM 885.v2 Service Manual

12. Increase the speed to 9 mph (14 kph) and then 12 mph (19 KPH), making any small
adjustments as needed.
13. Verify that the treadmill is level, adjust as necessary.
14. Verify the running belt/deck surfaces are clean
15. Replace all covers.
16. Verify the treadmill operation and return to service.

Calibrating the Lift Motor

1. Switch the treadmill circuit breaker from OFF to ON. The treadmill will auto-calibrate the running
deck incline to the 0% incline level (This is the lift motor calibration reference position).
Warning
Be aware that switching power ON will cause the lift motor actuator to begin the
: note
auto-calibrate process moving the running deck incline to the 0% incline level.
2. Set the treadmill circuit breaker to OFF and disconnect the power cord.
3. Access the lift motor actuator tube. You can either access from the bottom by carefully laying
the treadmill on its side or access from the front by raising the treadmill and resting the frame
base onto blocks securely placed under the front corners of the frame (this procedure removes
weight from the lift platform and lift motor actuator tube).
4. Disconnect the lift actuator tube from the lift platform mounting bracket, remove the hitch pin
and clevis pin.
5. Set the lift actuator 0% incline reference gap to 1.2 inches. Firmly hold the jack screw and rotate
the lift actuator tube nut to adjust the reference gap.
The reference gap is measured between the top of the lift actuator tube nut to the bottom of the
lift motor actuator housing.
6. Install the actuator tube into the lift platform mounting bracket. It may be necessary to slightly
rotate the actuator tube to align the clevis pin mounting holes. Choose an adjustment direction
that will minimize the change to the actuator tube reference gap distance. Firmly hold the jack
screw from turning while adjusting (turning) the lift actuator tube nut.
10. Return the treadmill to the upright position or remove support blocks.
11. Install the hood.
12. Connect the power cord and set the treadmill circuit breaker to ON.
13. Verify the treadmill incline function and return to service, see Checking Treadmill Operation.
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