Automatic oil pump-out systems are mainly used in instances where a large percentage of oil is anticipated in the influent, large oil spills are possible, and/or the facility is remote with limited personnel capable of checking the oil-water separator. This system typically consists of a pump, control panel, oil interface level sensor and requires the use of a separate oil storage tank. The oil tank should be sized larger than the internal oil storage capabilities of the separator and come equipped with a high oil alarm to indicate when the tank is full.

The McTighe automatic oil pump-out system is designed to prevent water from being removed during the pumping cycle under static conditions AND when oily influent is entering the separator. An optional back-up high oil alarm is available in the event of a pump or motor failure. McTighe engineers make sure pump type and performance characteristics are suited for the anticipated contaminants in the influent.

Customer must verify that the suction lift capabilities of the pump are not exceeded during installation. Pump must be heat traced if subject to freezing conditions. The detail below depicts a typical automatic oil pump-out installation in a buried cylindrical oil-water separator.