Walchem WCT400 Series Instruction Manual

Walchem WCT400 Series Instruction Manual Manual pdf 16 page image

134.3 KeypadThe keypad consists of 4 directional arrow keys and 4 function keys. The arrows are used to move theadjustment cursor and change settings, while the function keys are used to enter values, and navigate thevarious menu screens. The function keys are ENTER, EXIT, NEXT, and PREV (previous). NEXT andPREV scroll through the various menu choices. ENTER is used to enter a submenu and to enter avalue. EXIT is used to back up one menu level. If you are at the main menu level, EXIT will return youto the Summary Display.To change a value in a submenu, the left/right arrow keys move the cursor left and right to each digit oroption that can be changed. The up/down arrows will change numeric values up or down, or scrollthrough option choices. Press ENTER only when you have finished making all of the changes for thatmenu screen.4.4 Access CodeThe WCT series controller is shipped with the access code disabled. If you wish to enable it, seeSection 5.11 for operation. With the access code enabled, any user can view parameter settings, but notchange them. Note that this provides protection only against casual tampering. Use a lock on the coverlatch if you need more protection.4.5 StartupInitial StartupAfter having mounted the enclosure and wired the unit, the controller is ready to be started.Plug in the controller and turn on the power switch to supply power to the unit. The display will brieflyshow the WCT model number and then revert to the normal summary display. Scroll through the menusand calibrate the conductivity reading, temperature, and set the control parameters detailed in Section 5,Operation.To return to the summary display, press the EXIT key until you return to this screen. The controller willautomatically return to this screen after 10 minutes.Normal StartupStartup is a simple process once your set points are in memory. Simply check your supply of chemicals,turn on the controller, calibrate it if necessary and it will start controlling.4.6 Shut DownTo shut the WCT controller down, simply turn off the power. Programming remains in memory.