en
Installation and electrical connection
24
WILO SE 2017-12
6.5.2.2
Test the resistor of the temperat-
ure sensor
Measure the resistor of the temperature sensors with an ohmmeter. The following
measured values must be complied with:
▪
Bimetallic strip
: Measured value = 0 Ohm (passage).
▪
PTC sensor
(PTC thermistor): Measured value depends on the number of sensors in-
stalled. At PTC sensor has a cold resistance of between 20 and 100 Ohm.
– With
three
sensors in series, the measured value is between 60 und 300 Ohm.
– With
four
sensors in series, the measured value is between 80 und 400 Ohm.
6.5.2.3
Testing the resistor of the ex-
ternal electrode for sealing cham-
ber control
Measure the resistor of the electrode with an ohmmeter. The measured value must ap-
proach “infinity”. For values ≤ 30 kOhm, if there is water in the oil – change the oil!
6.5.3
Connection of the single-phase
motor
The single-phase current version is equipped with bare cable ends. Connection to the
mains is established by connecting the power supply cable in the switchgear.
Electrical
connection must always be carried out by a qualified electrician!
NOTICE! The individual wires are designated according to the connection diagram.
Do not cut the wires! There is no additional assignment between the wiring diagram
and connection diagram.
U1/Z1
3
U2
4
C
r
Z2
5
C
S
M 1~
gn-y
e
L
N
PE
1
2
6
3
4
gn-y
e
1
2
6
21
20
DK
Fig. 8:
Connection diagram single-phase motor
Wire
Designa-
tion
Terminal
1, 2
20, 21
Monitoring of motor winding
3
U1/Z1
L
4
U2
N
5
Z2
Connection for start and operating capacitor
6
DK
Monitoring of motor compartment
Green/yellow (gn-
ye)
PE
Earth
6.5.4
Three-phase motor connection
For three-phase current motors, a clockwise rotating field must be available. The three-
phase current version is equipped with a CEE plug or with a bare cable end:
▪ If a CEE plug is supplied, connection to the mains is established by inserting the plug
into a socket. The plug is
not
overflow-proof.
Install the socket so that it is overflow-
proof!
Observe the information on the protection class (IP) of the plug.
▪ If there is a bare cable-end, the pump must be connected directly to the switchgear.
DANGER! If the pump is connected directly to the switchgear, arrange for the elec-
trical connection to be carried out by a qualified electrician!
5
1
2
4
3
M 3~
gn-y
e
W
V
21
20
U
PE
6
DK
Fig. 9:
Connection diagram: P13 three-phase
current motor, direct starting, bimetallic strip
Wire
Designa-
tion
Terminal
1, 2
20, 21
Monitoring of motor winding
3
U
L1
4
V
L2
5
W
L3
6
DK
Monitoring of motor compartment
Green/yellow (gn-
ye)
PE
Earth
