Normal Startup; Shutdown; Operation; Main Menu - Walchem WDIS Series Instruction Manual

Normal Startup

Startup is a simple process once your set points are in memory. Simply check your supply of
chemicals, turn on the controller, calibrate the sensor if necessary and it will start controlling.
4.6

Shutdown

To shut the WDIS controller down, simply turn off the power switch. Programming remains in
memory.
The sensor must be stored with the measuring surfaces wet. If an extended shutdown will result in
the sensor dehydrating, it must be removed from its position in the process and stored in a clean, dry
place, without electrolyte in the cap. To reinstall, follow the directions in section 3.3.
5.0

Operation

These units control continuously while power is applied. Programming is accomplished via the local
keypad and display.
To view the top level menu, press any key. The menu structure is grouped by inputs and outputs. Each
input has its own setup menu for calibration and unit of measure selection as needed. Each output has
its own setup menu including set points, timer values, direction of control, etc. as needed. After 10
minutes of inactivity in the menu, the display will return to the summary screen. Keep in mind that
even while browsing through the menus, the unit is still controlling.
5.1

Main Menu

The exact configuration of your WDIS controller determines which menus are available as you scroll
through the settings. Certain menus are only available if you select certain options. All settings are
grouped under the following main menu items:
Sensor
Control 1
Control 2
Auxiliary 1
Auxiliary 2
4-20 mA
Time
Access Code
The key travels forward through this list while the
NEXT
list. Pressing
ENTER
(Only if 4-20 mA option circuit board is installed)
will enter the lower level menu that is currently displayed.
key travels backwards through the
PREV
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