PRO-S Rev1104
17
RPM Mode Operation
In the RPM mode of operation the
RPM
LED will be on. The PRO-S will maintain
a constant engine RPM.
The pump discharge pressure can vary but, as a safety feature, the PRO-S limits
the increase in pressure to 30 PSI. As the discharge pressure approaches this limit the
PRO-S will automatically lower the RPM to prevent a high pressure surge. The
RPM
LED will blink as the PRO-S sets a lower RPM. This lower RPM will be the new
operating RPM setting. Pressing any button will stop the LED from blinking.
Note: When changing from pressure mode to RPM mode the RPM setting
will be the RPM that the pump was operating at in pressure mode.
1. Press and hold
RPM
mode button for 3 seconds.
Result:
RPM
LED goes on.
2. Press
PRESET
and/or
INCREASE/DECREASE
button to select the
operating RPM.
3. Press
IDLE
button to bring engine to idle RPM.
Result:
SETTING
display shows
IdLE.
Change Preset Setting (Pressure or RPM)
The preset button allows the operator to go to a pre-programmed pump pressure
or engine RPM during operations. The setting will be shown on the SETTING display.
This procedure is to change the setting in the program.
Note: The engine must be running and the pump engaged interlock circuit
must be closed.
1. Press
IDLE
button.
Result:
SETTING
display shows
IdLE
.
2. Press
PRESSURE
or
RPM
mode button to select the setting to be changed.
Result: LED indicator goes on for mode selected.
Note: The
RPM
display must show
IdLE
before changing the preset.
3. Press and hold
PRESET
button. (Continue to hold through step 4.)
Result:
SETTING
display flashes previous programmed preset.
4. Press
INCREASE
or
DECREASE
button to change preset setting.
5. Release
PRESET
button.
Result: The new preset is programmed.
SETTING
display shows
IdLE
.
