What to do if my WTC MedWeld 4000 Welding System timer assembly loses power?
- DDonald AliNov 1, 2025
If your WTC Welding System timer assembly loses power, there are several things to check: * First, check the bus feed to the control for 480/600 VAC and ensure any disconnect on the bus feed is closed. * Next, verify 480/600 VAC is present in incoming lines at the control transformer and that the operator handle is UP to turn ON the breaker. * Also, check the fuse on the control transformer’s secondary to see if it is blown and replace it if needed. * Verify that line power is connected to the power supply and to the timer assembly. If power is present but the timer assembly does not function, replace the timer assembly. * Check the fuse in the timer assembly to see if it is blown, replacing if necessary. * Finally, inspect all I/O points for correct and secure connections, co...


