Testing The Full-Tank Float Switch (Or Pressure Switch) Circuit; Table 10: Testing The Full-Tank Float Switch (Or Pressure Switch) Circuit - Lorentz PS200 Installation Operation & Maintenance

9.4

Testing the full-tank float switch (or pressure switch) circuit

Table 10: Testing the full-tank float switch (or pressure switch) circuit
Test Test Description Notes
IF SWITCH IS NORMALLY OPEN (N.O.), cf. figure 26
10 POWER ON
voltage at terminals
3 and 4
chose one of
these two tests
10 resistance between
switch wires,
disconnected from
controller
IF SWITCH IS NORMALLY CLOSED (N.C.), cf. figure 26
11 POWER ON
voltage at terminals
4 and 5
chose one of
these two tests
11 resistance between
switch wires,
disconnected from
controller
page 36 | v100820
Meter Setting + Probe Input
V DC V ...
Ω Ω ...
V DC V ...
Ω Ω ...
Errors excepted and possible alterations without prior notice.
See schemes on previous page for illustration of testing
Normal Result Interpretation
a) 0 – 2 V if a) switch closed (or circuit shorted)
b) 5 V
if b) switch open (or circuit broken)
a) < 100 Ω if a) switch closed (or circuit shorted)
b) > 10 kΩ
if b) switch open (or circuit broken)
a) 0 – 2 V if a) switch closed (or circuit shorted)
b) 5 V
if b) switch open (or circuit broken)
a) < 100 Ω if a) switch closed (or circuit shorted)
b) > 10 kΩ
if b) switch open (or circuit broken)
- pump off
- pump on
- pump off
- pump on
- pump on
- pump off
- pump on
- pump off
Manual | LORENTZ PS Pump Systems