AEC Colortronic MTF 3000 Series Granulator - Manual (Page 11)

3.0 Pre-Operational Procedures
3.1 Scope
This section contains the information required to carry out pre-operational procedures, and a
checklist of items which should always be reviewed prior to a production run.
ΗΗΗΗΗΗΗ DANGER ΗΗΗΗΗΗΗ
Before undertaking any machine repairs or maintenance, always
make certain that the machine disconnect switch is turned to the
OFF position or that the control enclosure is disconnected from
the main power source. When extensive work is anticipated, either
place a sign indicating that the main disconnect switch is to remain
off onto the switch or lock the switch to prevent accidental
activation by someone unaware of work in progress.
3.2 Electrical Test
Before applying power to the machine, check the incoming voltage from L1 to L2, L2 to L3,
and L1 to L3 (see wiring diagram packed with the machine). The voltage should be the same
as indicated on the silver tag in the control enclosure. If the voltage is not the same, contact
the Colortronic Service Department for voltage modification.
Once it has been determined the voltages are proper, it is necessary to start the motors and
check for the proper direction of rotation.
Turn the main disconnect switch to the ON position.
Press the Granulator START pushbutton to power the granulator motor. Visually compare
the direction of the motor shaft rotation to the rotation arrow label (counter-clockwise when
viewed from the shaft end). If the motor turns in the opposite direction, reverse any two
incoming power leads.
Once the rotation direction is correct, the remaining electrical controls need to be tested as
follows:
Press the Granulator STOP pushbutton and allow the machine to stop.
For granulators equipped with conveyors, fans, or etc., test their operation also by
pressing the appropriate pushbutton. Check fan outlets for proper airflow.
For granulators with Emergency Stop pushbuttons, test the buttons to insure all motion
stops.
Open the front doors to verify the safety interlock switch shuts the machine off.
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