Pro-S Pressure Governor

Pro-S Pressure Governor

The Pro-S is an improved version of our popular PRO pressure governor platform. The Pro-S has replaced the older Pro-Series governors. New control electronics make the Pro-S more reliable and dependable. New programming features include automatic compensation for both low and high pressures, and high pressure surge limiting while in RPM mode (an important safety addition). Larger color coded buttons are easier to see and operate. Now available for more engine types!

With these devices installed on your rig, operating the pump is as easy as pushing a button. In a sense, this unit acts like a 'cruise control' for the pump. Designed especially for firefighters, the PRO Pressure Governor has gained a reputation for being very USER FRIENDLY. When operating in pressure mode (the default setting), the PRO will maintain a selected pressure setting regardless of the number of discharges that are opened as long as the system is capable of supplying the amount of water required. As more lines are opened, the PRO will raise the engine RPM automatically to maintain the required pressure. The PRO will reduce the engine RPM to maintain the required pressure when one or more of the discharges are closed down.

Features

SIMPLE to operate! (The PRO's interface was designed to be easy to use.) The large, color coded, clearly marked buttons are easy to identify even in dim light.
Maintains constant pressure during pump operations even as more lines are added or taken away.
Corrects for pressure changes faster than humanly possible.
Automatic PRESET for swift pressure and RPM settings (field changeable)
Settings are displayed in large, bright digits
Proven reliability. The PRO has been in everyday use by departments across the nation since 1993. You can depend on the PRO.
Engine idle when out of water. This feature requires a bit of explanation: The current program initiates "prime RPM" ramping at an out of water condition. In other words, if you run out of water, the PRO will go to a safe "prime" speed to try to get the pressure back. Failing this, after 7 seconds, the PRO will bring the engine to IDLE.
Remote High Idle option
Easy to install
Compatible with all common engines used in the fire service. This standardization allows you to create a simpler pumper training program because the same interface can be used regardless of engine type.

Operation
The unit defaults to 'Pressure Mode' on power up. The operator simply sets the required pressure (either manually with the 'Increase' and 'Decrease' buttons, or by pressing the green 'Preset' to bring the pressure to the required level) and the PRO will quickly and accurately adjust the engine RPM to maintain that desired pressure. The engine can be brought down to idle quickly during any operation with the touch of the red 'Idle' button. When operating in RPM mode, the PRO can maintain a set RPM regardless of the load on the engine. It is important to note that this is not the same thing as maintaining a set pressure (a function of PRESSURE mode).

A complete PRO kit includes a display controller, pressure transducer, transducer harness (12'). Connection for RPM is from AC tap on the alternator as standard. An optional magnetic pickup RPM sensor kit is available for older mechanical engines that may not have this connection available (or functional!).

Operating/Installation Manual

Part #654512100 PRO1-iS pressure governor kit for Cummins iS series engines