Walchem’s online support is here to assist you with installation, troubleshooting tips, and training materials.

If you need additional support, please click here to locate your local master distributor. Walchem’s master distributors maintain a local inventory of pumps, controllers and spare parts, are fully trained to provide technical support and understand the needs of customers in their territories.

Here’s where you find quick programming guides for your W100 controller.
Print out or save to your phone for easy access!
W100W Menu Map
W100P Menu Map
Typical Cooling Tower Program
W100W Quick Programming Guide: Boiler
W100 Quick Programming Guide
W100 Interlocks
Here’s where you find general support documents for your W100 controller.
Print out or save to your phone for easy access!
ORP Sensor Calibration Procedure
Chlorine Sensor Guidelines
Disinfection Sensor Techincal Tips
Conductivity Sensor Cleaning
Controller AO to multiple pumps
Trying to troubleshoot your W100 controller?
Print out or save to your phone for easy access!
Boiler Controller Troubleshooting
ORP Sensor Troubleshooting
pH Sensor Troubleshooting


Visit Walchem’s YouTube channel
for more technical support videos!

WCTW100 Basic Programming
WPHW100 pH Calibration
Wiring a solenoid valve to the W100
Walchem YouTube Channel

WCTW100 Basic Programming

WPH W100 pH Calibration

Wiring a Solenoid Valve