CTD DMC70A, Instruction Bulletin & Maintenance Manual

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DMC70 DMC70 DMC70 DMC70 DMC70 Air/Pneumatic System Air/Pneumatic System Air/Pneumatic System Air/Pneumatic System Air/Pneumatic System
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The air pneumatic system on the DMC70 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 by
depressing the foot switch to actuate clamps. Pushing the foot switch again releases clamps. Once the clamps are clamped,
the operator depresses the two-hand control buttons simultaneously, P/N 70B5P79. This gives a signal to the main 4-Way
Control Valves for the left saw to change direction—allowing air to pass to the main drive Cylinder on the left, P/N
70B3P75. This pushes the saw forward to a limit switch. The speed of the stroke is controlled by the Speed Control
Valve, P/N70B3P60. The left saw reverses and returns to the rest position, then the right saw moves forward to the limit
switch and then reverses and returns to the rest position. The vertical clamps then release. If the two-hand control buttons
are released anytime during the cycle, then the cycle is terminated and the saws will return to the rear or rest position. The
cycle will have to be restarted by clamping and then pushing the two-hand buttons simultaneously.
Diagram “I“ Air Circuit Piping for Model DMC70A
Air Supply Air Supply
Air Supply Air Supply
Air Supply—The air supply must be turned off and all electrics disconnected before making adjustment on the
power feed. A working pressure of 75 PSI (5.4kg/cm2) is required. An industrial-type compressor of at least
3 CFM (.085 cubic meters) is recommended. An additional 3 CFM (.085 cubic meters is required for Sawblade
Lubrication System. A conveniently located valve is supplied by the user to shut off the air line. Saws should be
Saws should be
Saws should be Saws should be Saws should be
moved moved moved moved moved by hand by hand
by hand by hand
by hand when setting up machine. when setting up machine. when setting up machine. when setting up machine. when setting up machine.
FR FR
FR FR FR—An Air Filter/Regulator is installed ahead of the air inlet to the machine. This system helps prevent foreign matter
from entering the system. The FR is comprised of two different components.
1. The Air Filter Bowl is located on the left side and is provided with an automatic drain. This collects and
then releases foreign matter and condensation collected by the air filter.
2. The Pressure Regulator, which is located on top of the air filter, controls the amount of air pressure allowed
into the system. An operating pressure of 75 PSI is required. (This is set at the factory.)