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4
EN-3P LIQUID LEVEL CONTROL RELAY
Testing the EN-3P
If the EN-3P is not operating correctly please follow the next
steps to verify if the installation is correct:
1.-
Connect the 120 VCA voltage supply to terminals T1 and
T2, the green LINE LED should turn ON. Use a wire to
connect terminal F/D with terminal PC.
120VCA
NO
C
NC
PL
PH
T1
F/D
T3
PC
T2
RELAY
LINE
L
H
SENSITIVITY
75K
100K
5K
50K
25K
NO
C
NC
PL
PH
T1
F/D
T3
PC
T2
RELAY
LINE
L
H
SENSITIVITY
75K
100K
5K
50K
25K
NO
C
NC
PL
PH
T1
F/D
T3
PC
T2
RELAY
LINE
L
H
SENSITIVITY
75K
100K
5K
50K
25K
If the EN-3P operated correctly when following this steps,
but continues experiencing problems with the operation it
indicates that the problem is not the EN-3P. The problem
comes from the installation or an issue with the wiring,
common issues with the installation or wiring include:
A.-
A bad connection with the cables.
B.-
A bad connection with the probes.
C.-
The liquid resistance is too high (above 100K ohms).
3.-
Connect terminals F/D, P/C and PL with terminal PH. The
H (High Probe) LED and the red RELAY LED should turn ON
and the output contact between NO and C should be closed.
Use a multimeter to measure the continuity between NO
and C to make sure the contact is closed.
2.-
Connect terminals F/D and P/C with terminal PL, the L
(Low Probe) LED should turn ON.
120VCA
120VCA
Dimensions
in (mm)
1.77(45)
3
(77)
4.44(113)
4.68 (119)
