Southworth APCU Series, Operating And Maintenance Manual

Page: 22 / 46

22 APCU Owner’s Manual
Operator Controls
T
he control panel on the unit includes several standard
controls. See Fig. 4.
“Main Disconnect” Switch -
This switch controls all electrical power to the unit.
“Tilt Up” Button -
When the operator presses this button, the unit tilts
the load enclosure 90°. See Part B of Fig. 2. Once
the button is pressed, the machine will complete this
part of the cycle - it is not necessary to hold the button.
“Dump Up” Button -
This button is used to unload the load enclosure. When
the operator presses and holds the “Dump Up” button,
the load enclosure begins to raise above the 90° tilt
position. See Part C of Fig. 2. The load enclosure only
moves when the operator is pressing the button. This
allows the operator to move the load enclosure by small
amounts to unload the load enclosure. (The “Dump
Up” button will not operate until the load enclosure has
reached the 90° tilt position.)
“Down” Button -
When the operator presses this button, the load enclo-
sure lowers completely, back to the floor level. If the
“Dump Down” button has been pressed, the unit begins
by returning the load enclosure to the 90° tilt position.
Next, the load enclosure lowers the rest of the way to
the floor. Once the button is pressed, the machine will
complete this part of the cycle - it is not necessary to
hold the button.
“Emergency Stop” Switch -
In an emergency, the operator can press this button
to stop the action of the load enclosure quickly. The
unit will not operate again until the control system has
been reset. If an E-stop is triggered, the E-stop reset
button on the APCU control panel must be held down
for 3 seconds to reset the system. If the system does
not reset contact maintenance before proceeding any
further.
Safety Photo-Eyes (supplied) -
This machine has three photo-eyes positioned near
the front of the frame. See Fig. 1. They are designed
to provide a signal to stop the unit if one of the beams
is broken. Before the machine will operate again, the
control system must be reset, indicating that both photo-
eyes are clear. Inspect the photo-eyes and verify their
operation regularly.
Operating Instructions
1. Before operating the unit, please read all of this
section. If your unit has any optional modifications or
accessories, information on these will be included at
the end of the manual.
DANGER!
The unit requires three-phase 460 Volts AC.
This voltage can kill you. Do not work with
the electrical parts unless you are a quali-
fied electrician.
2. Check the area around the APCU to be sure it is
clean and clear of obstructions. Be sure that the load
enclosure will be able to travel freely through its full
range.
3. Load the enclosure correctly:
• Be sure that the load weighs no more than the
maximum rated for the unit (3,000 lb.).
• Lower the load enclosure completely.
• Place the load as far back on the load enclo-
sure as possible. Center the load in the side-
to-side direction.
Fig. 4 Control Panel