Southwestern Industries TRAK 2OP M11, Safety, Installation, Maintenance, Service And Parts List

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87
Southwestern Industries, Inc.
TRAK

2
OP
M11 Installation, Maintenance, Service, & Part List Manual
Note - The “Range” is total pressure range that this switch can be adjusted or set to trip
at. The “Diff” setting is for setting the maximum pressure difference between the input
and output. If this difference is exceeded the switch will also trip.
6. Solenoids Valves – the 2 OP Mill has 2 solenoid valves as seen on the schematic drawing
27563-1. These valves are designed to control various functions of the pneumatic
system.
a) Valve labeled “ 1 ” (controls the flow of air to the clamp/unclamp air cylinder) –
this valve allows air to flow to the air cylinder found on top of the spindle which
allows tools to be clamped and unclamped from the spindle. It also provides air
to blow down the center of the spindle when changing tools. This helps blow
chips or debris off of the spindle taper and tool holder during a tool change.
b) Valve labeled “ 2 ” – this is a dual solenoid, 4 Way valve and designed to control
the direction of flow of air to the ATC carriage cylinder and the ATC door lift
cylinder. It moves the ATC front and back depending on which solenoid is
energized. This valve also supplies air to the door lift cylinder, which assists in
opening and closing the ATC door.
c) Valve Manual Override – each valve has a ¼” red button that protrudes 1/8” out
of the valve near each solenoid that can be pushed in to manually shift/operate
the valve. This feature should not be used to adjust the ATC cylinder, but it can
be used to adjust the tool unclamp cylinder operation and thru spindle air. The
electrical power does not have to be connected to use this feature.
Warning!
These override buttons should never be pressed during the normal machine operation, or even if
the machine’s electrical power is on and the computer still has control of the solenoids. The
locking feature should be only used if absolutely necessary, usually in a case when one person is
setting up or troubleshooting the machine. This feature should not be used to adjust the ATC
cylinder; the ATC valve is a three position valve, with center ports which are normally exhausting.
Using the override buttons on this valve will result in very violent movement of the ATC.
Pressing the manual override button basically shifts the valve in the same
direction as if it was operated via the adjacent solenoid during the normal
machine operation. These buttons are normally spring loaded OUT.
They have two basic functions:
1. Push button - when pushed in they shift the valve, and when released the
valve shifts back.
2. Push and Twist to Lock - when pushed down and twisted clockwise, the
button will stay down and stick out only about 1/16” in this state. The valve will
shift and will stay shifted until the button is twisted counterclockwise to unlock it.
Once unlocked, the button will return to its OUT position (
stick out 1/8”), and act
as a spring loaded push button.
The locked down button is often forgotten after the machine
troubleshooting/diagnostics are completed. It is often hard to notice that the
button is down, and if left in the locked position, the machine will not function
properly, which may lead to confusion and cause a more serious and complicated
machine problem or malfunction.
Warning!