FISCHBEIN PBC-6000, Operator'S Manual

Page: 19 / 82

FISCHBEIN
®
Co. MODEL PBC-6000™
OPERATOR’S MANUAL
REV. D 2005-03 19
After reaching the desired temperature setting, test a couple of bags and inspect them. The glue
must be making a strong bond to the bag. You can test this by gently pulling open the bag, after it
has cooled. If the glue is bonding correctly, fibers of bag material will be sticking in the entire
adhesive area. If the bag opens easily and you can tell that parts of the glue are not bonding to the
bag, the temperature setting will likely have to be increased, if the compression rollers are set
correctly. Be sure to only increase the temperature in small increments of 10 – 20 degrees at a
time, until the desired bond is achieved. After changing the temperature, allow the machine time
to fully adjust.
If the setting is too high, parts of the glue may be charred or burnt. If the glue appears to have
darkened, then the glue has begun to char. When the temperature is set too high, the glue may
begin to drip off the bag and land on the manifold. Glue build up on the manifold will clog the air
holes. Lower the temperature significantly and begin testing again. Always start at a lower
temperature and slowly increase the setting until the desired bond is achieved.
If the glue does not appear to be making a strong bond with the bag, although the temperature is
high enough to melt the adhesive, and the compression rollers are set correctly, then check the
surface of the bag. If the bag surface is too dusty or has a liquid contamination on it, the glue may
not properly bond with the bag fibers. The PBC is equipped with an air scrubber at the infeed end
of the machine. Make sure it is directed at the seal area and that it is effectively removing the
debris. The airflow can be adjusted through the scrubber by rotating the flow control valve in the
air line to the scrubber. (
Illustration 8.3, page 26
)
At the factory the machine is set to the specifications defined at the time the order was taken. If
sample bags were sent to Fischbein prior to shipment, the machine will be adjusted to the materials
sent.
6.8.2 USING THE TEMPERATURE CONTROLLER
The temperature controller is very easy to understand and use. The manual that comes with the
controller (located in the electrical enclosure) contains more detailed information and instructions
that are available. This PBC 6000 manual will only cover how to read, change and autotune the
controller.
STARTUP
When the system’s main power is ON, the heater switch turned ON and the green START button is
pushed, the controller’s display will light up. After a few seconds the display will alternate
between displaying the current temperature in the heater manifold and
–
AL
-
. The temperature will
begin to increase indicating that the heaters are heating to bring the manifold to the set point. Once
the temperature reaches the set point, the display will stop alternating displays and only show the
current temperature in the manifold.
SET POINT DISPLAY AND CHANGES
To display the set point, push and hold in the “*” button. The display (
Illustration 6.10
) will
alternate between the set point temperature and the temperature scale (
o
C for Celsius and
o
F for
Fahrenheit). To change the set point, push and hold in the “*” button and then press the “ ▲ ” or
“ ▼ ” keys to increase or decrease the setting. Release the buttons when done. Only make small