FISCHBEIN
®
Co. MODEL PBC-6000™
OPERATOR’S MANUAL
REV. D 2005-03
27
SEDIMENT BOWLS AND AIR FILTERS
Check the pneumatic system for air leaks at the connections and control panel. Inspect the
sediment bowls and air filters for debris and oil. If oil is found in the filters, replace the filters and
correct the air supply problem immediately.
AIRFLOW VALVES AND GAGE
The flow valves are shipped from the factory adjusted to allow the swing channel to open slowly
and to maximize the cleaning effect of the air scrubber on the bag top. In most cases the swing
channel valve can be left in this position. The air scrubber should be adjusted based on your
application and need.
8.4 SENSORS
8.4.1 THERMOCOUPLES
The thermocouples of the PBC are located inside the heater cartridges. If you suspect that a
thermocouple has become defective, the cartridge must be replaced. It is recommended that both
cartridges be replaced at the same time. To replace the cartridges, follow the replacement
instructions in
Section 8.8, page 51
.
8.4.2 PROXIMITY SENSORS
The standard PBC 6000 uses a proximity switch above the swing channel to determine when the
swing channel has completely engaged. As the swing channel is “CLOSED” into position to run,
the proximity switch rises up until it reaches the underside of the top cover, near the electrical
control panel. For this reason, the “CLOSE” buttons are simultaneously pushed and held until the
swing channel has completely closed. If the buttons are released before the swing channel has
completely rotated into position, the channel will disengage and rotate open. If the buttons are
pushed and held, but the swing channel never stays in the closed position, the proximity switch
may have come loose or needs to be replaced. Carefully follow the electrical prints in the
electrical enclosure to replace the switch.
If your PBC 6000 has a motorized frame lift system (rather than the standard hand crank), then the
vertical members of the frame have proximity switches installed. They are used to determine the
locations of the highest and lowest positions of the frame. This option protects the motor and the
threaded rod assemblies used in the frame assembly.
8.4.3 AIRFLOW SENSOR
An airflow sensor has been installed with the pneumatic system to protect the machine’s heaters.
(
Illustration 8.3
) The heaters in the manifold can overheat and become defective if insufficient air
flows through the manifold. The airflow sensor continuously monitors the pneumatic system for a
minimum amount of airflow, necessary for safe operation. If the airflow drops below a safe level,
the heaters will automatically be turned “OFF” and the machine deactivated. If there is sufficient
airflow through the system, but the sensor will not allow the heaters to activate, then the sensor
may need to be replaced.
Be sure to always use clean, dry, non-lubricated compressed air for the PBC 6000. Regularly
check the air filters and sediment bowls for signs of contaminants.
Summary of Contents for PBC-6000
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