CTD CM325R, Instruction Bulletin & Maintenance Manual, Page: 14 / 34

200R and 300R Series Air/Pneumatic System:
The air pneumatic system on the 200R Models and the CM325R is simple to use and understand, and easy
to operate. The main components of the air system are shown below in the Air Circuit Piping Diagram.
The system operates using a Two-Hand Anti-Tie Down Control for safety. Included with the Air Pneumatic
System are the main drive Cylinder and Valves, an Air Filter/Regulator, and one Vertical Pneumatic Clamp. The Vertical
Clamp is actuated prior to the activation of the saw head via a Foot Valve, P/N B3P53E, (recommended for safety) which
in turn energizes the Two-Hand Control. Note: Pressure must be maintained on the Foot Valve until Two-Hand activation.
The system will not allow unclamped material to be cut. The two hand buttons must be depressed at the same time for the
saw head to travel downwards. The system operates first by depressing the Foot Valve, P/N B3P53E. This gives a signal
to the Shuttle Valve, P/N B3P86, to allow air to pass to the Two Hand Anti-Tie Down Control, P/N B3P110. By de-
pressing both palm buttons simultaneously (at the same time), a signal is given to the main 4-Way Control Valve, P/N
B3P73 to change direction—allowing air to pass to the main drive Cylinder, P/N 2B3P05. The Cylinder pushes the saw
head down. The speed of descent is controlled by the Speed Control Valve, P/N 2B3P61, located on the Cylinder. By
releasing the Two-Hand palm buttons, air is shut off to the main 4-Way Valve, it shifts direction and the main drive cylinder
reverses.
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Air Schematic
Air Circuit Piping Diagram