Precor GEN06 Series Service Manual page 127

CAUTION: The treadmill requires a 20-amp individual branch circuit grounded per
NEC (National Electric Code) guidelines or local region electric code.
Measure the AC input voltage with the treadmill unloaded (running belt moving, with no
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one walking on the running belt) and then again while loaded (someone walk-
ing/running on the belt). The difference between the two states should be no more than
about 6 volts RMS, and ideally less.
If the voltage variance is more than 6 volts RMS, the distance the branch circuit
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wire are runs maybe very long or may have used smaller diameter wire. Recom-
mend to the club that they should consult with an electrician if this is suspected.
If NO, continue troubleshooting.
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Weight overloading is the most frequent cause of treadmill shutting down. Overloading
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is most often caused by excess deck/belt friction, but can be made worse by line voltage
conditions. This condition happens more often with heavier runners, but never walkers.
In high exerciser clubs (10 hours or more of use per day), the decks/belts will wear out
much faster than at other locations, sometimes in months rather than years. It is often
accompanied by error codes 27, 28, or 29, see "Troubleshooting the 3 Phase AC Drive
Motor System."
If the Treadmill ON/OFF circuit breaker is tripped:
Verify the wall outlets do not share neutral wiring and that each wall outlet is on an indi-
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vidual branch circuit. An individual branch circuit will have its own load line, neutral line
and ground line. To verify that the treadmill is not on an individual branch circuit use an
AC voltmeter measure from the hot contact of one AC receptacle to the neutral contact
of another AC receptacle. If AC line voltage is present then the treadmills are sharing
neutral lines.
If YES, advise customer to have their facility wiring upgraded per Precor spe-
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cifications, and then continue with step 2.
If NO, continue troubleshooting.
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CAUTION: The treadmill requires a 20-amp individual branch circuit grounded per
NEC (National Electric Code) guidelines or local region electric code.
Verified that a long distance branch run has inadequate gauge wire.
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If YES, advise customer to have their facility wiring upgraded per Precor spe-
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cifications.
If NO, continue troubleshooting.
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Verify the input line voltage; Low line voltage for the U.S. is any voltage below 108 VAC,
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measured while the treadmill circuit breaker is switched "ON" and the running belt is
stopped. For international, low line voltage is anything below 200 VAC while the tread-
mill circuit breaker is switched "ON" and the running belt is stopped. Measure the line
voltage with the treadmill circuit breaker is switched "ON", and the running belt is
stopped. Record the voltage. Then measure the voltage again using the instantaneous
voltage drop using the min/max function on your volt meter while someone is running on
the treadmill at 7.0 MPH or higher.
Contact Precor Customer Support at support@precor.com or 800.786.8404 with
any questions.
7 Troubleshooting
System Troubleshooting Procedures
Page 120