O&M Manual v2
Page 19
7.
Reconnect the drain tubes. Make sure the bowl latches are securely locked in place. Be careful to avoid
cutting O-rings
8.
Slowly open the air inlet valve to pressurize the bowls. Examine for leaks and tighten if needed.
The Unitronics Touchscreen has a built in alarm screen that automatically flashes when a filter change is
required (see
). The screens cannot be cleared until it has been acknowledge by the operator by
hitting the “OK” button.
B
B
Filter Change Required !!!
C
C
Filter Change Required !!!
Figure 8: Filter Change Required Screen
5.4
PLC
Each of our three types of generators, (Tank Mount, Cabinet, and Skid Mounts) all come standard with a
Unitronics Programmable Logic Controller (PLC). The program is proprietary to South-Tek and is uniquely
programmed to meet the needs of individual customer engineered to ordered generators.
The PLC is used for the control sequence of the valves and controls the Nitrogen Generator’s functionality.
All programs are proprietary and shall be locked from the factory. Any changes require factory assistance and
must be done by STS. Unauthorized changes to the program can void all warranties and might cause damage
to the system or cause it to malfunction.
5.4.1
Alarm Settings
Press “Alarm Params” to move to the alarm parameters menu shown in
. Setting the oxygen percent
value (or ppm value if NTRON 7100 is being used), sets the oxygen output relay to ON until the O
2
percent
(or ppm value if NTRON 7100 is being used) falls below the value shown on the screen.
Exit back to
main screen
button
Enter O
2
%
Maximum
Enable /
Disable Alarm
Output
Enter O
2
PPM
Maximum
Press here to goto
Filter Change
Schedule Menu
Figure 9: Alarm Setting Screen
