37
INSTALLATION
June 1999
96-8000
ELECTRICAL C ONNECTIONS
NOTE: The machine must have air pressure at the air gauge, or a "Low Air Pressure"
alarm will be present on power up.
CAUTION! Working with the electrical services required for the VMC can be extremely
hazardous. The electrical power must be off and steps must be taken to
ensure that it will not be turned on while you are working with it. In most
cases this means turning off a circuit breaker in a panel and then locking the
panel door. However, if your connection is different or you are not sure how
to do this, check with the appropriate personnel in your organization or
otherwise obtain the necessary help BEFORE you continue.
WARNING!
THE ELECTRICAL PANEL SHOULD BE CLOSED AND THE THREE LATCHES
ON THE DOOR SHOULD BE SECURED AT ALL TIMES EXCEPT DURING IN-
STALLATION AND SERVICE. AT THOSE TIMES, ONLY QUALIFIED ELECTRI-
CIANS SHOULD HAVE ACCESS TO THE PANEL. WHEN THE MAIN CIRCUIT
BREAKER IS ON, THERE IS HIGH VOLTAGE THROUGHOUT THE ELECTRICAL
PANEL (INCLUDING THE CIRCUIT BOARDS AND LOGIC CIRCUITS) AND SOME
COMPONENTS OPERATE AT HIGH TEMPERATURES. THEREFORE, EXTREME
CAUTION IS REQUIRED.
1. Hook up the three power lines to the terminals on top of the main switch at upper right of electrical
panel and the separate ground line to the ground bus to the left of the terminals.
WARNING!
THROUGH THE SPINDLE COOLANT (TSC) PUMP IS A THREE PHASE PUMP
AND MUST BE PHASED CORRECTLY! IMPROPER PHASING WILL CAUSE
DAMAGE TO THE TSC PUMP AND VOID THE WARRANTY. REFER TO THE
TSC START UP SECTION.
THE 50 TAPER SIDE MOUNT TOOL CHANGER HAS A THREE PHASE MOTOR
WHICH MUST BE PHASED CORRECTLY. CHECK DIRECTION OF CAROUSEL
ROTATION TO VERIFY PROPER PHASING.
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