South-Tek Systems N2Blast FPS-15000, Manual

Page: 15 / 35

O&M Manual v2
Page 16
The PLC is equipped with a pressure transducer to display the current pressure of the Nitrogen in the Storage
Tank. It’s tied into the PLC with a 4-20 mA signal and programmed to allow manual input of cut in / cut out
pressures.
** The cut in / cut out settings are factory set and should not be adjusted without contacting South-
Tek Systems. Adjusting these settings may alter the results of the N2 purity as well as the N2 flow
capabilities.
To see what the factory setpoints are, the user can hit the “Menu” button from the main screen, then “Pressure
Transducer Setup” (
Figure 3 ). A password prompt screen will appear. Touch the blue box and a numerical
keypad will pop up. Enter in the password provided by South-Tek Systems and hit enter. (See Figure 4 )
Exit back to
main screen
button
Goto
Calibrations
Menu
Goto Pressure
Setup Menu
Goto Timing
Menu
Goto Alarms
Menu
Goto
Maintenance
Menu
Figure 3: Menu Screen
Function Key Assignments
Ret. to
Main Menu
Password Screen
Press here to bring
up the password
entry keypad.
Press here to
return to the
main menu
Function Key Assignments
Ret. to
Main Menu
Keypad Screen
Enter password
by pressing
keys on keypad
Press here to
return to the
main menu
Press return
key after
entering
password
Keys pressed
will show up
here
Figure 4: Password and Numeric Keypad
With the correct password, the pressure transducer screen will pop up, Figure 5 .
Return to
Main Screen
Button
Press here to
change Cut-in
pressure
"Green"
indicates valve
is OPEN
Press here to
change Cut-out
pressure
Press here to
change
debounce time
Figure 5: Pressure Transducer Screen