Metalfab Model APB Belt Feeder - Manual

INSTRUCTIONS FOR OPERATION & MAINTENANCE
MODEL APB BELT FEEDER
General Description
The Metalfab APB Belt Feeder is a precision volumetric Feeder for dry materials. It
consists of a slider belt assembly driven by a 20:1 ration D.C. drive as standard. It may
also be driven by a 10:1 variable speed A.C. transmission or a constant speed A.C. gear
motor. A doctor blade is provided for wiping the discharge end of the belt clean. The
unit may also be supplied with a flanged discharge nozzle which is bolted to the outlet
of a bin or vibrated bin discharger. The nozzle may have a manually adjustable gate or
may be supplied with a fixed outlet, depending on the application.
Installation
The Feeder is supplied with levelers for ease of installation. They should be adjusted to
maintain the belt level (both length and width) and also provide a 1/32" to 1/16"
clearance from the bottom of the nozzle to the top of the belt.
Nozzle location lengthwise is not critical, but the nozzle centerline should be forward of
the end pulley by a minimum of 2". Also, the front face of the nozzle should be back
from the centerline of the forward pulley by at least twice the maximum height of
material discharge.
Motor Connections
For motors provided with a D.C. drive, an S.C.R. controller is supplied. The controller
converts 115/1/60 or 230/1/60 line voltage to D.C. voltage. The controller has
stop/start switch, fuses, pilot light and digital setpoint to control motor speed. The
controller should be wired to a supply line and also wired to the drive motor. Wiring
diagrams and instruction sheets are shipped with the unit. The controller may be
mounted locally or remotely.
For units with mechanical variable speed drives, wiring diagrams are provided on the
inside of the conduit box. Also, instruction manuals are shipped with the unit. This
drive has a 10:1 speed range.
Caution
ADJUST SPEED ONLY WHEN THE MOTOR IS RUNNING. SINGLE SPEED MOTOR
DRIVES HAVE WIRING DIAGRAMS ON THEIR NAMEPLATES.