7. Setting the "End of Curve Tolerance"
The "End of Curve Tolerance" for dry-running protection can be adjusted to eliminate nuisance trips where long fill times are expected, for
example, irrigation, drop pipe fill.
1. Press the [Main Menu] button twice to go to the beginning of the main menu.
2. Press the [Down] button until "22-** Appl. Functions" is highlighted, and press OK.
3. Press the [Down] button until "22-5* End of Curve" is highlighted, and press OK.
4. Press the [Down] button until "22-52 End of Curve Tolerance" is selected, and press OK.
5. Enter the applicable percentage value from the table below, and press OK.
Example:
Calculation for "End of Curve Tolerance":
Setpoint - (37.5% × Sensor range) = 15 psi
Setpoint = 60 psi
Sensor range = 120 psi
Contact the Grundfos Groundwater Contractor Technical Hotline for further assistance.
1(1)
22-52 End of Curve
37.5%
End of Curve
Tolerance
60.1 psi 0.00A
22-5
TM081125
Example for setting the "End of Curve Tolerance"
Setting in menu 22-52 Setpoint: 50 psi Setpoint: 60 psi Setpoint: 70 psi
20% [-24] 26 psi 36 psi 46 psi
25% [-30] 20 psi 30 psi 40 psi
30% [-36] 14 psi 24 psi 34 psi
35% [-42] 8 psi 18 psi 28 psi
40% [-48] 2 psi 12 psi 22 psi
45% [-54] - 6 psi 16 psi
50% [-60] - - 10 psi
13
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