Troubleshooting The External Ac Power Source; Possible External Ac Power Problems; Troubleshooting Checklist - Precor Energy Series Service Manual

Troubleshooting the External AC Power Source

The TRM 211 model treadmill must be connected to a dedicated individual branch circuit with a
minimum capacity of 15 amps at 120 VAC. A 15 amp dedicated individual branch circuit is defined
as: a single 15 amp circuit breaker that feeds a single load. A treadmill operating from a non-
dedicated individual circuit or a circuit breaker of less than 15 amps capacity will not have the
necessary power to operate multiple treadmills. The lack of available power can cause any
number of symptoms ranging from numerous intermittent (seemingly inexplicable) error code
events, poor speed control, and/or tripping the facility circuit breaker.
If any of the above symptoms exist the facility 120 VAC input power circuit wiring must be checked
and confirmed to be a 15 amp dedicated individual circuit before troubleshooting the treadmill.
In addition the 120 VAC voltage level must be verified. Nominal AC operating voltage on 120 VAC
circuits is 105 VAC to 120 VAC. Nominal AC operating voltage on 240 VAC circuits is 208 VAC to
240 VAC. For operator safety considerations and to minimize electrostatic discharge conditions
the AC frame ground continuity must also be verified to be a low resistance connection to the AC
distribution ground bar.
Caution : The treadmill 120 VAC 60 Hz input power must be supplied from a dedicated
individual branch circuit with a minimum capacity of 15 amps or the treadmill will not
operate correctly and/or be damaged.
Correct input power is required prior to treadmill troubleshooting.

Possible External AC Power Problems

Possible Input Power Problems
Temporary Current Overload
Condition:
Unstable/Intermittent AC Input
Power:
Shared AC Input Power:
Faulty AC Neutral Wiring:
Low AC Input Voltage:

Troubleshooting Checklist

Check for shared or incorrect Facility AC input wiring:
1. Verify that each AC power outlet is connected to a 20 amp individual branch circuit.
2. Verify that multiple treadmill are not using the same AC input power outlet (daisy-chaining).
Indicative of a tripped treadmill AC circuit breaker.
3. Verify that the multiple input outlet receptacles are not sharing a common neutral wire.
Indicative of a tripped facility AC circuit breaker.
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A temporary event such as, a heavy exerciser running at high speeds for
an extended period of time or intermittent/unstable AC input power can
cause a per incident error code 29 event and treadmill shut-down. This is
a normal preventative function to stop/limit damage due to a short term
nonrecurring current overload event.
Facilities using supplemental or ship board AC generator power can
cause error 29 events due to fluctuating AC input voltage and/or
excessive generator power switching.
Each treadmill must be connected to a 20 amp individual branch circuit;
a separate Hot and Neutral wire. Powering multiple treadmills in series
on the same circuit causes current overloading and can trip the facility
AC circuit breaker.
Each AC input power outlet circuit must use a separate neutral wire.
Shared neutral wires is not allowed.
A drop in AC input voltage, 108 Vrms for 120 VAC and 200 VAC for 240
VAC systems, can cause an error 29 event.
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