Walchem W900 Series Instruction Manual

Also see for W900 Series: Troubleshooting guide Instruction manual Quick programming guide Instruction manual

Contents

Walchem W900 Series Instruction Manual Manual pdf 48 page image

43Outputs (see section 5.3)Program the settings for each outputThe R1 relay output will be displayed. Touch the relay field to get to the Details screen. Touch the Settings icon.If the name of the relay does not describe the control mode desired, touch the Scroll Down icon until Mode fieldis displayed. Touch the Mode field. Touch the Scroll Down icon until the correct control mode is displayed, thentouch the Confirm icon to accept the change. This will bring you back to the Settings screen. Finish the rest ofthe R1 settings.If you want the output to be interlocked by a flow switch or by another output being active, enter the InterlockChannels menu and select the input or output channel that will interlock this output.The default is for the output to be in Off mode, where the output does not react to the settings. Once all settingsfor that output are complete, enter the HOA Setting menu and change it to Auto.Repeat for each output.Normal StartupStartup is a simple process once your set points are in memory. Simply check your supply of chemicals, turn onthe controller, calibrate it if necessary and it will start controlling.4.5 Shut DownTo shut the controller down, simply turn off the power. Programming remains in memory. It is important that the pH/ORP electrode remains wet. If the shutdown is expected for any longer than a day, and it is possible for the electrodeto dry out, remove the electrode from the tee and store it in pH 4 buffer or cooling tower water. Take care to avoidfreezing temperatures when storing the pH/ORP electrodes to avoid breakage of the glass.5.0 OPERATION using the touchscreenThese units control continuously while power is applied. Programming is accomplished either via the touchscreen orthe optional Ethernet connection. See section 6.0 for Ethernet instructions.To view the readings of each sensor, or whatever user-defined list of parameters that has been set, touch the Homeicon if not already there. The menus for each of these parameters may be accessed directly by touching the parameter.Keep in mind that even while browsing through menus, the unit is still controlling.Touch the Main Menu icon from the home page to access all settings. The menu structure is grouped by alarms,inputs and outputs. Under the Configuration menu will be general settings such as the clock, the language, etc. that donot have an input or output associated with it. Each input has its own menu for calibration and unit selection as needed.Each output has its own setup menu including set points, timer values and operating modes as needed.5.1 Alarms MenuTouch the Alarms icon to view a list of active alarms. If there are more than six active alarms, the Page Down iconwill be shown; touch this icon to bring up the next page of alarms.Touch the Main Menu icon to go back to the previous screen.