Stenner Pumps ECON FP E20PHF - Seconds Mode (dry contact signal) Program Pump Settings; Calculate Available Dose Time; Calculate Pump Operating Time; Calculate Pump Operating Time Percentage

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USA and Canada 800.683.2378, International 904.641.1666 Econ FP
1. Calculate the Available Dose Time in Seconds.
The available dose time is the minimum time interval between the water meter
contact closures.
a.
60 Seconds
= Maximum System Flow Rate (spg)
Maximum System Flow Rate (gpm)
b.
Maximum System Flow Rate (spg)
Water Meter’s contacts per gallon (cpg)
*
= Available Dose Time (sec.)
*
Refer to the water meter model to confirm the contact rate (cpg).
2. Calculate the Pump Operating Time in Seconds.
Pump Output Requirement (gpd) x Available Dose Time (sec.)
=
Pump Operating
Pump’s Maximum Output (gpd)
Time (sec.)
PUMP OPERATING TIME EXCEEDING AVAILABLE DOSE
TIME MAY LEAD TO DOSING ERRORS. To reduce operating time, select a pump with
a higher output or use a stronger solution strength.
3. Calculate the Pump Operating Time Percentage.
Reference the chart to find the pump’s maximum operating time for the formula below.
Pump Operating Time (sec.)
x 100 =
Pump Operating Time Percentage
Maximum Pump Operating Time (sec.)
**
**
Value can only be 1, 5, 10, 20, or 60.
Seconds Mode
MAXIMUM Pump Operating
Time in Seconds
1 SECOND 1.0
5 SECONDS 5.0
10 SECONDS 10.0
20 SECONDS 20.0
60 SECONDS 60.0
PROGRAM PUMP SETTINGS
SECONDS MODE (dry contact signal)