Pro-120 Fault Finding Tips
The Pro-120 does not have battery discharge protection: this can however be engaged, see the instruction manual. However if the battery voltage falls too low, the Pro-120 will turn power
Contact UsWhat does qd mean inside the relay protection cabinet
Home / What does qd mean inside the relay protection cabinet
That is, when the lid is removed, the control box components are automatically disconnected from the system. QD boxes include a start capacitor, a "blue" relay and 5 terminals (overload relay is included in the motor). Debuting in 1992, more than 5 million of these remarkable devices have been produced, and over the years, its quality has been nothing less than phenomenal. Without a properly functioning control box, a high-performance submersible motor is rendered useless, often leading to total system failure and expensive excavation or pump pulling. The reed switch consists of two tiny rectangular blade-type contacts, which bend under magnetic flux.
