2007-02-28-SD550-IMG_4451

Bench building the raw water compartment heater & pump cycle components. I made a big error in designing the rig in not considering freezing temps. These components are designed to provide heat and intermittant cycling of the raw water pump to keep the compartment, pump, filter, etc. from freezing up. From left, thermostat to control box heaters, trigger & cycle timer relays, box heaters.