Castle TSM-21 Serial 61064 and lower (Mead) Operator Manual - Manual (Page 21)

ƒ This small exhaust port can slip behind the metal plate of the control box and/or get
debris stuck in the hole.
ƒ Make sure that this port is clear and open and that the port is not stuck behind the sheet
metal.
If the solenoid fails or becomes blocked it will cause either a slow release of
the stock or a lack of clamping pressure.
Solution Steps:
The clamp solenoid is the pneumatic switch that signals the pilot valve to send full pressure
to the clamp cylinder, which provides the clamping action.
Figure 16
ƒ The solenoids are the three stacked black boxes located behind the pilot valve near the
control box. The clamp solenoid will be the top box in the stack. (Figure 16)
ƒ Turn off air and remove both air lines from the clamp solenoid valve. The air lines are
removed by pressing on the push-in fitting rings where the hoses go into the solenoid.
The space is tight for large fingers so you may need to use a pair of needle-nosed pliers to
get in there to press the rings and slide hose out. To re-install, slide hose in until it meets
resistance and then push in hose another 1/2”.
ƒ The “air in” line is located towards the case of the machine and the “air out” is closer to
the center of the machine. (Figure 16)
ƒ Turn the air back on and use the “air in” line (which will be flowing with about 85 PSI)
to clean out both open ports on the valve.
ƒ Turn off the air and insert the “air in” line back into the “air in” side of the valve.
ƒ Un-plug or turn off both router motors.
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