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2.0 Front Panel: Data Entry & Display
The front panel consists of a user interface, which includes an alphanumeric display and a
membrane keypad to select operational modes and alarm settings. The display is a two line, 20
characters each, liquid crystal display (LCD). The display is backlit to allow easy viewing over a
wide range of lighting conditions.
The lower line on the LCD is used to signify the function of the “soft keys” marked “A”, “B” and
“C”. The “soft key” current labels are displayed in the lower line of the LCD. If you press these
keys, then the function displayed above it is performed.
The main keypad consists of eight “hard” keys whose function does not change. These keys are
used for basic control and programming of the FilterTec Plus. The basic key definitions are:
Executes the selected operational mode and starts pump. (Run Command)
Interrupts current operational mode and stops pump. (Stop Command)
Sets pump RATE in ml/min, or PRESSURE in psi, depending on Mode being
implemented. Allows “on the fly” changes in Rate or Pressure Modes.
Used for Time statement in Programmable R-P Mode.
Sets motor direction, counter-clockwise or clockwise.
Changes between alternate displays in all modes. (Access to TTL 1-4 in Programmable
R-P Edit Mode.)
Exits current operational mode or menu level, stops pump.
Used for flow rate re-calibration. (Valve Control in Programmable R-P Mode.)
Two LED’s are also on the front panel, just to the left of the main keypad. These indicate the
current pump status. A green light indicates the pump is in motion; the red light indicates that
the pump has stopped.
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