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Page 48
If you hear a grinding or clicking noise, or experience excessive vibration during
exercise, or if the steps are not functioning properly, you probably have a
problem in the drive train. Attempt to isolate the problem area by performing the
following tests in precisely the order listed below. Refer to the “Parts Removal
and Replacement” Section of this Manual for all disassembly and assembly
instructions.
1. Unplug the power supply from the AC wall outlet and remove the side
covers.
2. Check the condition and the tension level of the Poly-V belt. Replace the
belt if it is excessively worn.
a. Adjust the tension level so that you can deflect either side of the
belt 1/10" (0.3 cm) at the center between the alternator and the
transmis sion pulleys (See Drawing Below). Noise can be generated
by a belt that is too tight or too loose.
b. If the noise is still present, remove the Poly-V belt and rotate the
staircase without standing on it. With the Poly-V belt removed, the
staircase will rotate very quickly.
c. If the noise no longer exists, replace the alternator.
TROUBLESHOOTING THE DRIVE TRAIN
WARNING
TO REDUCE THE RISK OF INJURY, DO NOT OPERATE THE MACHINE
WHILE THE SIDE COVERS ARE REMOVED. DO NOT ROTATE THE STAIRS
WHILE ANYONE'S HANDS ARE INSIDE THE MACHINE.
!