Davey Speedman Dual Pump Variable Speed Pump Control System - Manual (Page 33)

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Manual Zero (Primary Transducer)
Press ENTER (*) and then the DOWN key to decrease the dispalyed value to ZERO. If “Value Too
Low” appears, increase the value slowly by pressing the UP key until a zero value is obtained.
*NOTE* The value does not change with each press of the UP/DOWN key. Press and hold the
UP/DOWN key for rapid change and single press for small change.
When ZERO is displayed press ENTER (*) to finish the operation.
Reconnect pressure tube before re-enabling pumps.
Adjust Pressure (Primary Transducer)
The calibration of the analogue sensors is achieved by adjusting the pressure
reading on this screen to match a reading from a pressure gauge. This will only
need to be done if a new or non-standard Davey transducer is fitted.
Once the system pressure has stabilised, press the ENTER key and then either UP or DOWN keys to match
the reading on this screen to suit a pressure gauge reading. Once the readings are matched the system
pressure is calibrated. Press ENTER again and then exit the menu to store the data.
Transition to the new reading may take some time to settle, wait for 5 seconds before accepting the
adjustment.
Averaging
The displayed pressure responsiveness is dampened to reduce fluctuations in
the readout.
Decrease Responsiveness with a higher ”AVERAGING” value and increase
responsiveness with a lower number.
Flow Meter Zero OR Backup Pres Zero (Backup Transducer)
Flow
The Flow Meter Zero adjusts the zero in the Flow Meter input. With no flow
press ENTER and then the UP or DOWN keys to set the reading to “0”.
Be sure that the flow meter is connected to the relevant input. If the value input is too low then the message
“VALUE TOO LOW” will appear. If this has occurred press the UP key until a zero value appears. Press
ENTER again and then exit out of the menu to initiate a store of the “zero” value.
Backup
If Analogue input is configured to be a backup pressure transducer then this display
will be displayed instead of Flow. When the backup transducer is selected it will
automatically swap between transducers should one transducer become
out of range. Out of range is defined as a reading greater than 95% or less than 18%.
For it to work effectively it has to be zeroed exactly the same as the primary transducer.
Adjust Pressure
XXXX
Averaging
XX
Flow Meter Zero
XXXXX /Sec
Backup Pres Zero
XXXX