Service Manual: E-TR and E-TRi
6
POWER (ELECTRICITY)
Objectives
If you are not qualified/comfortable working with electricity you should consult a certified electrician.
This section should provide you with the information necessary to properly service your Star Trac unit
by giving you:
•
A basic understanding of electrical safety
•
A basic understanding of electrical terminology
•
A basic understanding of electricity in general
•
A basic understanding of electrical tools
•
An overview of your Star Trac unit
Safety
See the “PRECAUTIONS – SAFETY” section of this manual.
Terminology
CURRENT
– The number of electrically charged particles that flow past a given point on a
circuit in a given time
AMPERE (AMP)
– A measure of current
VOLT
– Measures the current pressure of a circuit
•
Star Trac refers to the 2 most common global voltages as:
o
110V (or 110VAC)
o
220V (or 220VAC)
WATT
– The rate at which an electrical device consumes energy
OHM
– A measurement of resistance
o
Ohm’s
Law:
Current:
I = V / R
I
= current,
V
= voltage,
R
= resistance
V
I =
R
Depending on what you are trying to solve, other variations can be made:
Voltage:
Resistance:
V = I x R
R = V / I
All variations of Ohm’s Law are mathematically equal to one another.
RESISTANCE
– Used to dissipate passing current into heat to lower a voltage. Resistance
is measured in Ohm’s.
POTENTIOMETER (POT)
– An electronic component which has an adjustable resistance
HOT
wire – Delivers power to the unit. Typically has black, brown, or red insulation
NEUTRAL
wire – Once electricity has done its work, it goes back through the neutral wire
to complete the circuit. Typically has white or blue insulation
GROUND
wire – In addition to the neutral wire, the ground wire offers current another path
should an electrical short happen. Also help to dissipate static build-up from the running
belt and other components. Typically has green insulation (may be bare copper in some
cases)
Summary of Contents for Pro Tread AC 7600
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