The jet pump provides water pressure for the hydrotherapy system by recirculating water from the spa, drawing it through the skimmer and filtration system, and forcing the water through the fixed jets, rotary jets and jetstream. These pumps are designed for the presence of water at all times.
The opening at the bottom of the door is a vent for the heat generated by the operation of the jet pump. The vent will eliminate the problem of overheating pump motors and protect the other components from excessive heat. It is important that the vent opening be kept clear at all times. If the vent opening becomes obstructed, overheating of the jet pump may occur.
72991 Jet Pump 1.5 HP 2 SPD is for the following models.