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How do I set up a Walchem W600 Controller?
How do I set up a Walchem W600 Controller?

Learn how to program the WCT600 controller for a cooling tower application, including conductivity sensor and relay settings.

Updated over a week ago

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Introduction


This guide will help you program the WCT600 for a cooling tower application. You will learn how to set up the conductivity sensor and configure the bleed relay and inhibitor feed pump relay.


Follow along with the video tutorial or click the timestamp next to any step to jump to that point in the video.

Tip: Tap the ▶ Step # to expand or collapse more detailed instructions


Programming the WCT600


Step 1: Program the Conductivity Sensor

Press Inputs, then Sensor 1. Press the Settings key, select Type, choose Contacting Conductivity, and hit the checkmark to accept. Return to the main menu.


Step 2: Program the Bleed Relay

Press Outputs and select Relay 1. Press Settings, scroll down to Mode, ensure it is set to On/Off Set Point, and hit the checkmark. Press Settings again to confirm that the input is set to the conductivity sensor you programmed in Step 1. Return to the main menu.


Step 3: Program the Inhibitor Feed Pump Relay

Press Outputs and select Relay 2. Press Settings, scroll down to Mode, and choose your desired inhibitor feed mode: Bleed and Feed, Bleed then Feed, Feed after Bleed, or Flow Timer. Hit the checkmark. Press Settings again to confirm that the bleed relay is set to the one programmed in Step 2. Return to the main menu.


Step 4: Ensure Relays are Set to Auto

After making changes in the modes for any relays, double-check that they are set to Auto and not Off. Press HOA, ensure Relay 1 is set to Auto, and then do the same for Relay 2. Return to the main menu.


✅ Your WCT600 is now programmed for a cooling tower application.


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