AEC OFE Blender - Manual (Page 13)

Loss-In-Weight Color Feeders Chapter 2: Functional Description 12
Chapter 2: Functional Description
2-1 Models Covered in This Manual
This manual provides operation, installation, and maintenance instructions for 30, 90, 250,
400, 1,000, and 2,000 lbs./hr. Loss-In-Weight Color Feeders. 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 Loss-In-Weight Additive Feeder is designed to feed high cost additives into the extruder
throat. Loss-In-Weight Color Feeders are sized to meet the specific requirements stated by
the Customer at the time of purchase.
2-2 General Description
Modern plastics processing demands the addition of precisely metered components. Your
auto adjust colorant and additive feeder is a self adjusting, loss in weight calibrated feeder
designed to meter a precise preset rate of free flowing pelletized additive into the extruder
throat. The unit is equipped with an inductive proximity switch to sense the extruder screw
RPM to provide slaved in operation.
The unit is self-adjusting to compensate for varying bulk densities, different pellet cuts, etc. It
will save colorants that result from operator calibration errors, and varying bulk densities of
pellet additives.
2-3 Standard Features
Mechanical Features
• Precision 1/10% span accurate cantilever load cell weighing system
• Aluminum and mild steel contact surfaces
• Surge hopper with conical reload valve
• Square mounting flange
• 3” OD discharge opening
• Feeder housings with drain tube
• Supply hopper lids for manufacturer receivers and loaders
Electrical Features
• Extruder following circuit
• Field mount proximity switch
• 115/1/60 or 220/1/50 supply voltage
Controller Features
• Operator control panel with LCD display
• RS-485 communications port
• Parallel printer port connection