Castle TSM-21 Serial 64234 and above (Bosch) Operator Manual - Manual (Page 19)

CASTLE, INC TSM-21 OWNERS MANUAL V2.0 Page 19 of 41
4.4 Drill Feed Rate Adjustment
The stroke speed with which the machine drills the pilot hole (and clamps the work piece) is
solely a function of the air pressure set at the internal Pressure Regulator. There is no separate
adjustment knob.
Note: If the Drill Feed Rate is so fast that the machine shakes violently during the
Pocket Cycle or if the Drill Feed Rate is so slow that the Pocket Cycle is significantly
longer than two seconds, then it may be necessary to adjust the Pressure Regulator.
Do not adjust the internal Pressure Regulator unless absolutely necessary.
The internal Pressure Regulator knob is located on the Control Box (Fig 12), just below the
duplex power outlet for the Router and Drill motors. If in doubt whether the internal Pressure
Regulator is set correctly, follow the steps described below:
Fig 12
• Unlock the knob by pulling it slightly away from the Control Box.
• Turn the knob counter-clockwise until it reaches a mechanical stop.
• Turn the knob clockwise five full revolutions (it’s helpful to make an index mark on the knob.)
• Lock the knob by pushing it slightly toward the Control Box.