Precor c944, Руководство по обслуживанию, Страница: 26 / 46

C944 Treadmill
Page 26
Procedure 6.1 - Replacing the Lift Motor, Rotation Sensor or
Magnet Hub
Note:
If you need to replace a lift motor that utilizes a hall effect rotation sensor, remove the magnet
hub and rotation sensor bracket from the defective lift motor and mount them on the new lift
motor. Unless the magnet and rotation sensor are defective, do not remove them from their
mounting positions on the magnet hub and sensor bracket. Replacement lift motors are not
furnished with the hall effect rotation sensor.
WARNING
Always turn off the circuit breaker and unplug the treadmill before you remove the treadmill hood.
Removing the Lift Motor
1. Remove the hood.
2. Remove the red lift motor lead from the lift motor capacitor, but leave the remaining red wire
connected to the capacitor terminal.
3. Remove the black lift motor lead from the lift motor capacitor, but leave the remaining black
wire connected to the capacitor terminal.
4. Disconnect the connector on the white lift motor lead.
5. Remove the revolution sensor plug from the J2 connector jack on the lower PCA.
Note:
When the revolution sensor wire assembly is disconnected from the lower PCA, the zero sense
switch must be disconnected as well.
6. Disconnect the two blue wires on the rotation sensor wire assembly from the zero sense
switch terminals.
7. Place the treadmill on its left side.
8. Remove the two shoulder screws and nuts that secure the lift motor to the treadmill frame
and lift platform. Remove the lift motor and set it aside.
9. Remove the set screw that secures the magnet hub to the lift motor. Set aside the magnet
hub.