Feed Rate Control (FRC)
How it works
NOTE
Additional information
Pin retracts when lifted.
The feed rate control adjusts the output by utilizing a
cam/lifter system to control the rotation of the roller
assembly according to the setting on the dial ring.
Inside the FRC is a brass spider and index pin assembly that
consists of a pin (with carbide tip) and a spring inside the
holder attached to a lifter.
When the pump is on, the index spider assembly rotates.
When the lifter drops into the FRC channel, the pin engages
an index plate hole. The roller assembly rotates, creating the
pumping action.
When the lifter rides on the cam, the pin is lifted inside the
holder. The roller assembly does not rotate, resulting in no
pumping action.
30
Section V
Maintenance Basics –
Feed Rate Control
