Eagle Microsystems VF100 - Manual (Page 7)

SERIES VF-100 SCREW FEEDER
6
base and have mounting holes drilled to match the bolt pattern of the feeder. If a
weigh plate is provided, its platform must be located in the correct location and at the
correct height and be level. Other accessories such as a solution tank must be
properly located in reference to the feeder, while accessories such as an extension
hopper only have to be bolted into position atop the feeder. On some convenient
structure close to the feeder locate and drill holes for mounting the motor drive
controller. This location should be within a 20’ cable run of the feeder. If the
controller must be located at longer distance from the feeder a junction box and cable
extension box will have to be provided (by others). Wire the drive controller in
accordance with the National Electric, Code, State and Local regulations. See wiring
diagram provided with the feeder for basic feeder to controller connections.
III. STARTUP:
A. CHECK SCREW ROTATION:
Once the wiring is complete and before material is added to the feeder hopper, check
the rotation of the drive screw to make sure the screw is rotating in the correct
direction. Start the feeder and look into the feeder hopper to observe the screw
flight. If the flight appears to be advancing toward the discharge spout, the screw is
rotating in the correct direction. If you are not sure, drop a small amount of material
(enough to cover the flight) in the center of the feeder hopper and observe which
way the flight draws the material. If the material moves toward the discharge spout,
all is well. If the material moves toward the drive end of the screw, the flight is
rotating backward. Rotating backward will unscrew the flight assembly from the
drive shaft. Stop the motor, remove AC power from the SCR controller and reverse
the two armature wires connected to the SCR terminals. If the wiring reversal is
required, check that the screw is fully threaded into the drive shaft, re-apply power to