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4. Programming
4.1. Touchscreen Display
Use the touchscreen on the front of the 7500 control unit to program the system:
Purging time: % complete / Time left
0%
0:30
X.XX
inH O
2
2
10
3
6.00
P2
0.80
P1
3.00
0.30
Bar Graph
Enclosure Pressure
To enter Purge Setup or Contrast
press and hold finger on the display
in position for 5 seconds. To
enter Contrast push at location
SETUP
shown
CONTRAST
4.1.1
Contrast and Back Light
Adjusting the Contrast
To adjust the contrast, push on the display in the area marked "contrast". The up and
down arrows adjust the contrast level: UP increases and DOWN decreases.
LCD Backlight
The LCD backlight is always on. It cannot be turned off or adjusted.
Program settings are saved on non-volatile memory in the CPU. Settings are
unaffected by power down and reset function. Default values are stored and can be
restored.
Enclosure Pressure
0 to 10" w.c. range
P4
P3
Enclosure Pressure
0%
X.XX in H O
0.35
0.80
3.00
P2
P3
P1
To enter Purge Setup or Contrast
press and hold finger on the display
in position for 5 seconds. To
enter Contrast push at location
shown
7500 S
M
P
erieS
anual
Purging time: % complete / Time left
0:30
Purging Program
3
0 to 2" w.c. range
2
0 to 10" w.c. range
2
6.00
10
P4
Bar Graph
Enclosure Pressure
SETUP
rograMMing
43
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