Castle TSM-20 Operator Manual Addendum - Manual (Page 4)

CAUTION: ALWAYS DISCONNECT POWER AND AIR BEFORE ATTEMPTING ANY
MAINTENANCE OR TESTING ON YOUR CASTLE MACHINE!
2.0 INTERNAL AIR PRESSURE REGULATOR
The internal air pressure determines the drill feed rate and the overall speed of the machine. The factory
setting is 75 PSI. It is important for the machine function to have at 75 PSI to the machine.
Locate the regulator in the control box (Fig 2). Unlock the yellow lock ring by pulling it slightly toward
the black knob. Turn the knob to the right (clockwise) to increase pressure. Turn the knob to the left
(counter-clockwise) to decrease pressure. Push the lock ring back in when done.
To completely reset the pressure, turn the knob all the way counter-clockwise and then turn it 5-6
full turns clockwise. This should bring your pressure to approximately 75 PSI.
NOTE: The speed of the cycle stroke is directly proportional to the pressure to the machine.
Cycling too slow may cause drill bits to heat up in the wood and may cause separation. Cycling
your machine too fast may cause undue pressure to the drill bits and may cause breakage and/or
over-sized holes.
PRESSURE
REGULATOR
FIG 2
TSM-20 Operator’s Manual - Addendum 2