Vestil SWA-48 - Manual (Page 6)

6
O
PERATION
I
NSTRUCTIONS
– SWA-48, POW-CAR
*** Ensure that all employees involved in the operation and care of this machine understand and follow these instructions!
The standard model SWA-48 is suitable for moderate-duty, intermittent cycling with a 4,000 pound load. It is intended
to be used indoors in industrial and commercial locations to apply stretch-wrap material at between three and twelve revolu-
tions per minute (RPM) in a clockwise rotation around palletized, stable, non-hazardous loads. The maximum diameter (or
diagonal, measured corner-to-corner) load size for the SWA-48 is 76”, the maximum load height is 78”. Always ensure that
the load is centered on the turntable.
The material mast can utilize stretch-wrap material rolls in lengths from 10” to 20” — spacer tubes stored on the material
rod allow for the use of several material roll lengths below 20”. The SWA will generally be capable of achieving stretch-wrap
material stretch rates of 150-200%.
Loading:
The load rating, in pounds, is shown on the machine dataplate located on the frame near the gear reducer mounting bracket. It
indicates the net capacity of the turntable with a load that is centered and evenly distributed.
Note: The addition of any ancillary equipment to the turntable, such as a conveyor, must be taken into account when determining the
maximum working load to be placed on the turntable.
Warning: Verify that no part of the load is overhanging below the turntable. A damaged skid with a dragging board or an overhanging
load that sags below the turntable can cause the entire load to shift suddenly if it catches on the frame.
Caution: Do not exceed the machine’s load ratings. Damage or premature failure to the drive system or its components could result
from exceeding the listed capacity.
Place loads onto the turntable slowly and gently with a pallet truck or walk-behind fork lift (using an optional approach ramp), or with
a fork truck.
Caution: Do not drop loads onto the turntable. Even a two-inch drop onto the turntable creates a shock load on the load bearings that will
result in their premature failure.
See the installation page in this manual for instructions on how to install a roll of stretch-wrap material onto the mast carriage.
Operation:
Warning: Keep all personnel clear of the machine when it is in operation. Be certain no part of any person, fork truck, or
other object is in the path of the rotating load before rotating the turntable.
Warning: Do not stand or sit on the turntable or its load at any time.
Warning: Keep all body parts and clothing away from the machine’s drive system(s).
Caution: Do not use the stretch-wrap machine if any damage or unusual noise is observed, if it is in need of repairs, or if it
seems to be malfunctioning. Notify your supervisor or maintenance personnel if you notice anything out of the ordinary.
The standard stretch-wrap machine is furnished with a constant-pressure (dead-man style) foot switch control. Pressing
the foot switch will turn on the motor to rotate the turntable. The turntable will rotate only while the control is pressed. Upon
releasing the control, the turntable will coast to a stop.
The turntable speed can be adjusted with the speed control knob on the front of the motor speed control. The display
on the front of the motor controller shows the approximate RPM of the turntable. Turn the speed control knob clockwise to
increase the turntable speed, and counterclockwise to decrease the speed.
Pull the handle upward to move the stretch-wrap material roll upward. Push the handle down to move the material
downward. Control of the tension/stretch of the stretch-wrap material is achieved by turning the handle on top of the mate-
rial. Screw the handle clockwise (downward) to increase the material tension and stretch, and turn it counterclockwise
(upward) to decrease the material stretch.
Caution: Always carefully watch the palletized load when the turntable is rotating.
Set the material tensioner so the material will pull off the roll easily. Pull stretch-wrap material off the roll and either hold
or tie it to the load to be wrapped. Press the foot switch to rotate the load.
After one or two overlaps, tension the material to the desired stretch rate. Raise and lower the material carriage until the
load is covered 100%, with two or three overlaps. While the turntable is still rotating, the material can either be cut with a
knife or torn with the hands. Press and smooth the cut end of the material up against the side of the load.
Note: The best wrapping results for palletized loads is generally achieved by having the wrap overlap the sides of the pallet
at the bottom and extending slightly above the load at the top.
Ensure that all safety and warning labels stay in place and are legible. Refer to the labels page in this manual.