Precor Precision 400 Series Service Manual page 123

measure peak amp spikes as high as 20 amps, even on a new belt/deck. The higher
the AC input current is, the more worn the belt/deck condition is
a. If the average AC input current is less than 16 amps, the belt/deck is in good
condition, do not replace.
b. If the average AC current is between 16-18 amps on 120 VAC machines (8-9
amps on 240VAC machines), the belt and deck needs to be serviced. Be aware
that lighter weight exercisers may not be heavy enough to cause these higher
AC input current values.
i. If not already cleaned, clean the belt/deck surfaces and repeat the AC
input current draw measurement.
ii. If the current draw decreases below 16 A 120 VAC (8 A 240 VAC), do not
replace the belt and deck. Otherwise, replace the belt and deck. If the
other side of the deck is new condition, flip the deck and reuse.
iii. Also review the error log, if there are recurring motor current overload
related error codes, replace the deck and belt. .
c. If the average input current reaches 19-20 amps or greater on 120 VAC
machines (9.5-10 amps or greater on 240 VAC machines), the running belt and
deck needs to be replaced. If the other side of the deck is new condition, flip the
deck and reuse.
5. Repeat the AC input amp draw test after replacing the running belt and deck. Damage
to the Motor Controller
load/high current condition for prolonged periods of time. This type of damage would
not generate an error code, but would cause the input breaker to trip intermittently. An
amp draw test will confirm this condition. If the amp draw test is comfirmed, replace
the MC.
NOTE: Repeat the AC input amp draw test after replacing a running belt and deck.
Damage to the Motor Controller (MC) can occur if the unit has been operated in an
overload/high current condition for prolonged periods of time. This type of damage
would not generate an error code, but would cause the input breaker to trip inter-
mittently. An amp draw test will comfirm this condition.
See Also
"System Troubleshooting Procedures" on page 102
1
Motor controller, motor controller unit, or motor controller module: used on treadmills, con-
tains the LPCA and motor controller functionality.
Contact Precor Customer Support at support@precor.com or 800.786.8404 with
any questions.
1
(MC ) can occur if the machine has been operated in an over-
7 Troubleshooting
System Troubleshooting Procedures
Page 116