Download Eagle Low Air Trouble Shooting

Eagle Low Air Trouble Shooting
I have this low air pressure warning showing on my touch screen.
What do I do now?
This document will help you understand how the low air pressure circuit on the Eagle
system works and how to diagnose problems with it.
System Overview:
The Eagle system requires a large volume of compressed air to operate properly.
For this reason the main air system on the eagle has a pressure sensor in it. This
sensor gives an input to the controller when there is air pressure available.
There is also an air pressure sensor on the 530 loader and the 560 sizer. One or both of
these machines may not be included in your system. When this document refers to a
machine that is not in your system you may simply disregard that section.
What to do first:
When the touch screen on the Eagle displays the Low air pressure warning it means
that one or more of the air pressure sensors is not completing the circuit. There are
three possible reasons that you are getting this warning.
• There is no air pressure available.
• The valve on the machine is turned off.
• The air pressure sensor is not giving the correct input to the controller,
When the touch screen on the Eagle displays the low air pressure warning there are
several thing that need to be done before you begin trouble shooting the electrical
system.
1. Make sure that you air compressor is on and that there is pressure in the lines.
2. Make sure that all of the shutoff valves on the Filter regulator units are in
the supply position.
3. Make sure that there is at least 90 PSI showing on all of the main air
pressure gauges.
4. Inspect the wires from the pressure sensor to the electrical box. Make sure
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that they are not damaged or broken.
If the touch screen on the Eagle still displays the low air pressure warning, after you
have checked all of the above items, then it will be necessary to make some voltage
tests to determine where the trouble is.
Trouble Shooting.
CAUTION: The tests described in the following section will be done in the main
electrical box of the machine with the power on. The components used in the Eagle
system are “finger safe” however extreme caution must be used when working in a live
electrical box. Norfield Ind. recommends that you have the following tests performed
by a qualified electrician only.
NOTE: The following instructions are in general terms and are intended for use with the
530 loader, the 560 sizer, and the Eagle machining center. For specific information
concerning terminal numbers, and item location, you may either refer to the system
schematics, and other documentation that you received with your machines, or you
may call Norfield Technical Support.
1. Open the main electrical box on the machine.
2. Turn on the main power to the machine.
3. Locate the input terminal on the controller that the low air pressure sensor
is connected to.
4. Check the voltage between the associated input common and one of the 24N
terminals. There should be approximately 24 VDC. If there is voltage continue
to the next step. If there is not voltage then the wire from the 24 volt power
supply to the common is either broken or disconnected.
5. Check the voltage between the controller input terminal and one of the
24N terminals. If there is 24 Volts at the input terminal then the low air
pressure sensor is bad or the wire going to the sensor is broken or
disconnected.
6. If there is not 24 Volts at the input terminal and there is still the warning on
the touch screen, replace the input module.
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