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7/50D Plus or 7/50D Controller Chapter 2: Functional Description 10
Chapter 2: Functional Description
2-1 Models Covered in This Manual
This manual provides operation, installation, and maintenance instructions for 7-Pump, 50D
& D Plus-Station Conveying Controllers. Model numbers are listed on the serial tag. Make
sure you know the model and serial number of your equipment before contacting the
manufacturer for parts or service.
The 7-Pump, 50D & D Plus-Station Conveying Controller is a programmable logic
controller, with 24 VDC or 115 VAC control circuit, easy-to-use touchscreen operator
interface terminal and optional audible/visual alarm.
2-2 General Description
Our material conveying systems create vacuum for the automatic conveying of most free-
flowing, dry, pelletized, or granular materials. Material characteristics determine the type of
equipment needed to convey the material.
A typical use for our equipment is an in-plant distribution system for plastic processing
plants.
Our central vacuum systems are as varied as the applications they service. The tubing and
equipment furnished in our system is designed to convey the material(s) specified at the time
of purchase at specific rates and distances.
We can advise you on your system capabilities based on system makeup, distance, material,
and conveying rates you want.
System capacity is directly affected by the pressure drop in the overall system, such as
number of material line bends, pipe length, Y-tubes, T-tubes, etc.
Use the minimum effective amount of vinyl flex hose to maximize material line efficiency.
Keep material lines as straight as possible. Refer to the Mechanical Components Product
manual (Part No. A0536580) for installation recommendations.
Note: Vacuum leaks occurring anywhere in your system reduce capacity.