Kval Commander, Instruction Manual

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BASIC ELECTRICAL TROUBLE SHOOTING
The electrical component systems are designed to expedite the troubleshooting process and
minimize “down time”. In general, component systems have the input or feed functions at the
top. Output or load functions are positioned at the bottom. Most two voltage electrical panels
are designed with the LOW VOLTAGES on the LEFT, and the HIGH VOLTAGES on the
RIGHT. The majority of the system components are labeled with numbers that correspond
with the electrical prints included in the electrical box door.
Computer controlled machines have signals on the computer that light when the input or output
functions are energized, respectively. Computer controlled as well as non-computer controlled
machines have white lighted, 120V control power terminal strips. This will indicate power
supply from the respective circuits.
Idec controllers also have lights on them for the input and output functions. You can easily
find out which circuits are failing by watching the lights turn on or off. Compare the lights on
the IDEC controller to the electrical diagram to determine what systems are being affected.
IF THE POWER STOPS DURING NORMAL OPERATIONS: DE-ENERGIZED:
1. Check that the input disconnect switch is not turned off.
2. Check that all of the emergency stop buttons are in the normal position.
3. Lock Out and Tag Out the main power source.
4. Turn the panel disconnect switch in the off position, open the electrical panel door.
5. Observe the disconnect switches. Look for loose or broken wires at the disconnect then at
all of the components.
6. Check for continuity of all fuses with an OHM meter.
7. Check motor overloads by pressing each white button (usually at the bottom of the panel in
SEQUENCE, if one is tripped there will be a slight resistance to touch and a click as it is
reset.