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BP1620, BP1628 & BP1640 Granulators Page 22 BP1600
6 Sequence of Operation
6-1 Scope
This section contains the information required to carry out pre-
operational procedures, and the checklist of items, which
should always be reviewed prior to a production run.
DANGER!
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. Lock out all sources of
power including the main disconnect switch and follow all of your plant lockout
procedures.
6-2 Electrical Test
Before applying power to the machine, check the incoming
voltage from L1 to L2, L2 to L3, and L1 to L3 (see the 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 Sterling for voltage
modification instructions at 1 (800) 229-2919.
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
(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.