The mechanical pilot valve assembly is replaced by a solenoid-operated hydraulic valve, and the mechanical pump motor switch is replaced by a pressure switch and time-delay relay. Two flow control valves enable the adjustment of loading and unloading rates.
The solenoid operated system reduces maintenance costs by eliminating the need for mechanical overhauls. More reliable operation is also attained with the solenoid controlled system.
This system provides external indication when the pump has been running in the loaded state for an extended period of time (customer determined 0.10 to 10 minutes). This can be an indication of low oil levels, loading malfunctions, motor problems, or excessive oil usage in the governor system. An alarm relay contact closes when the system is in an alarm state.
The customer can use the dry contact for remote monitoring and alarm triggering (rated 10 amps at 120VAC, 3 amps at 24VDC, and 0.20 amps at 125VDC).