Section 2
Symptom:Alarm 151 LOW THROUGH SPINDLE COOLANT.
Possible Cause: Incorrect power phasing - the pump motor is
running backwards.
Corrective Action:
The power supply PCB has a phase detect with neon indicators
on the top center portion of the board. Make sure that the
electrical power is phased correctly:
Green Light: The incoming power is phased correctly.
Orange Light: The incoming power is incorrectly phased.
Both Lights: A phase is missing (there is a loose cable in the
system).
If the electrical power is phased incorrectly:
Set the main circuit breaker on the machine to the OFF position.
Lock the main circuit breaker. Use an approved lock with an
approved safety tag.
Swap the #74 and #75 incoming power cables at the main
transformer.
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