Thd-Lift

Hand holding the THD Darkroom CP Lift's removed control module, wires and connectors visible, next to the open bath enclosure

THD Lift: Bath Stability, Bottle Lag, and the Opened Machine

The corrected bath-corner readings were locally steady, but the bottle was still warming. The teardown also exposed wet-area wiring problems and identified the installed controller as WH1435A. Small temperature variation does not establish accuracy or electrical safety.

THD Darkroom CP Lift processor on a workbench, showing the control box, water bath, and three processing bottles inside the tank

A Broken THD Lift as a Real-World Test Subject for PanterLA

The pump, heater, and Willhi WH1435A controller operated, but the exposed gear drive failed. Follow-up logging put numbers on the thermal lag: the three-corner mean reached 38°C at 24.3 minutes; the bottle was still below it at 39.3 minutes.