Castle LB-23 Operator Manual - Manual (Page 8)

Machine Adjustments
The Castle model LB-23 is designed for use in a wide
variety of materials. You will find that the machine
performs well in hardwoods, softwoods, melamine,
particleboard and MDF. The machine will work on
materials of thickness from ½” to 1 ¾”.
Collet Adjustment
ƒ There are two collets per spindle, making 46 collets per head. The collet
on the bottom of the spindle is used to lock the drill bit into the spindle
assembly.
ƒ The upper collet is used to hold the entire assembly to the head.
ƒ To get the best results the upper shaft collar should be pushed as close to
the snap ring as possible, and then tightened.
Cycle Time Adjustment
Two adjustments control the amount of time that the cutting cycle takes to
complete:
ƒ The air pressure to the head is set at the primary regulator closest to the
rear of the machine.
ƒ The first valve activated in the foot switch is supplied with air from the
secondary regulator, which is the one closest to the front of the machine.
This, in turn, supplies air to the index pins.
6
ƒ The primary regulator should be set at 80 to 85 PSI.