Product Manual

Owner’s Manual for Wet-Prime Trash Pumps 17
Operation
Start and Stop Events
The start and stop events are determined by the
combination of START and STOP mode and function.
Start and Stop Modes:
Single Switch
Switch one controls automatic operation.
Dual Switch
Both switch inputs control automatic operation.
Transducer
Transducer input controls automatic operation.
Transducer & Switch
The transducer input controls automatic operation with
dual switch mode as the backup. The switch inputs over-
ride the transducer if actuated when the transducer is not
calling for an automatic cycle.
Start and Stop Functions:
Empty
Uses the selected mode to reduce the level or pressure.
Fill
Uses the selected mode to increase the level or pres-
sure.
Maintain Out
Uses the transducer to maintain the level or pressure at
or below the target.
Maintain In
Uses the transducer to maintain the level or pressure at
or above the target.
.
NOTE: When the switch inputs are the source of the start
event in Transducer & Switch mode, only the switches will
stop the engine.
Maintain Functions
The Maintain In and Maintain Out functions adjust the
engine speed to keep the transducer level at the Target
Set Point. The Servo Gain adjusts how aggressively the
throttle is adjusted while the Servo Delay controls how often
the throttle is adjusted.
NOTE: Maintain functions are only available in the
Transducer or Transducer & Switch modes.
The direction of the throttle adjustment is dependent upon
the selected mode as shown in the table.
Table 1 - Start and Stop Events
Mode ▼ Function ► Empty Fill Maintain Out Maintain In
Single
Switch
Start SW1 Close SW1 Open SW1 Close SW1 Open
Stop SW1 Open SW1 Close SW1 Open SW1 Close
Dual Switch
Start SW1 and SW2 Close SW1 and SW2 Open SW1 and SW2 Close SW1 and SW2 Open
Stop SW1 and SW2 Open SW1 and SW2 Close SW1 and SW2 Open SW1 and SW2 Close
Transducer
Start Above High Set Point Below Low Set Point Above High Set Point Below Low Set Point
Stop Below Low Set Point Above High Set Point Below Low Set Point Above High Set Point
Transducer
& Switch
Start
Above High Set Point
or
SW1 and SW2 Close
Below Low Set Point
or
SW1 and SW2 Open
Above High Set Point
or
SW1 and SW2 Close
Below Low Set Point
or
SW1 and SW2 Open
Stop
Below Low Set Point
or
SW1 and SW2 Open
Above High Set Point
or
SW1 and SW2 Close
Above High Set Point
or
SW1 and SW2 Close
Below Low Set Point
or
SW1 and SW2 Open
Table 2 - Maintain Functions
Transducer State Maintain Out Maintain In
Above Target Increase Speed Decrease Speed
Below Target Decrease Speed Increase Speed