Class1 107490 - UNI-Governor 107396 107269 software v 6 00 - Manual (Page 5)

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Version Display
While the governor is at idle and [MODE] is being displayed, if the IDLE switch is depressed for 7
seconds, the message center will scroll through the version number, governor settings and I/O voltage.
When the sequence is complete, the display will return to [MODE] and normal operation is available.
PSI Enable
The pressure governor will not control pressure until a discharge pressure of 70 PSI is attained. It will
act as a throttle until this pressure point is achieved.
Setting PRESET
If the PRESET switch is the held down for 10 seconds after a Power On Cycle (before pressing any
other switch), the governor will enter the PRESET programming mode.
Selecting Engine Type
Only the INC and PRESET switches are active in the engine selection menu.
Selecting the engine type is only necessary at first power on of a new governor.
RPM Preset Disable
If there is pressure on the pump transducer or the Pump Engaged Interlock is active, RPM Preset is
disabled and a DISABLED message will be displayed in the Message Center.
Pressure Preset
While the governor is attempting to reach the preset PSI, the increase is tested at intervals and if the
pressure is not increasing, the governor will maintain the engine speed at the point the pressure stops
increasing and uses that as the pressure setpoint.
High Idle
The High Idle feature is disabled if there is > 10 PSI at the pump transducer.
Switch Session Pressure
If the INC switch is held and the operating pressure is above 90 PSI, the governor will not allow a change
greater than 80 PSI without releasing the INC switch and pressing it again. This is to prevent high
pressures from being introduced by a distracted operator.
New Messages
OPERATOR will be flash anytime the governor can’t achieve a desired pressure.
This indicates that the governor will not increase engine speed until the pump operator intervenes.
-INTAKE- will be displayed anytime the governor is operating in pressure mode and the discharge
pressure drops below 30 PSI. If pressure remains below 30 PSI, the display will change to LoSupply
and engine speed will be reduced to idle. When LoSupply is displayed the governor is no longer
active and the operator must ensure an adequate water supply and reinstate governing using the MODE
Switch and either INC or PRESET.
OPERATOR will be flashed anytime the governor can’t achieve a function or pressure.
This indicates that the governor will not increase engine speed until the pump operator intervenes.
CTRL INC will be flash in the display if the governor cannot regain the set pressure. It will change
to OPERATOR flashing if pressure cannot be regained within 4 seconds.
During these periods, the governor will not command an increase in engine speed and will return
to the last known engine speed command where the setpoint was achieved.
v6.0 Features