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• All electrical connections must be performed
after the electrical supply has been switched off
and secured against unauthorized switching.
• For safe installation and operation a proper
grounding of the pump to the power supply's
grounding terminals is required.
NOTE: Integral solid state short circuit protection
does not provide branch circuit protection. Branch
circuit protection must be provided in accordance
with the Manufacturer Instructions, National Elec-
trical Code and any additional local codes.
(Pos. a) The electrical connection must be estab-
lished via a fixed power cable which has a plug at-
tachment or an all-pole switch with a contact
opening width of at least 1/8" (3 mm). Use 140/167
°F (60/75°C) copper conductors only. The power
cable is to be fed through the NPT 3/4" threaded
cable connection. Cross-section of power cable to
be maintained (3 phases + Earth).
- (Pos. b) The sensor, external setpoint and [ext.off]
input cable must be necessarily screened and must
be inserted into the NPT 1/4" or NPT 1/2"
threaded cable connection.
NOTE: Observe the tightening torque.
Be sure to use a calibrated torque wrench, see
table below.
• The electric characteristics (frequency, voltage,
nominal current) of the motor-converter are men-
tioned on the pump identification sticker. Check
that the motor-converter complies with the mains
supply used.
Parts
Protective plate
Fan cover
Electronic module
Module cover
Control terminals
Power terminals
Union nut,
cable lead-throughs
12
a)
b)
Screw type
M5 Hexagon head 0.3 in (8 mm)
Hexagon socket 0.12 in (3 mm)
M5 Hexagon socket 0.16 in (4 mm)
Phillips recessed head PZ2
Slotted-head screw 0.14 x 0.02 in (3.5 x 0.6 mm) 0.4
Slotted-head screw
SFZ 1-0.02 x 0.14 in (SFZ 1-0,6 x 3,5 mm)
NPT 1/4"Hexagon head 0.7 in (17 mm)
NPT 1/2" Hexagon head 0.8 in (22 mm)
NPT 3/4" Hexagon head 1.1 in (27 mm)
• The electric protection of the motor is integrated
into the converter. The parameters take into ac-
count the characteristics of the pump ensure the
protection of the motor and pump.
• Install correct electrical overloads and breakers to
protect the installation mains voltage.
NOTE: If you have to install a differential circuit-
breaker for users protection, it must have a delay
effect. Adjust it according to the current men-
tioned on the pump identification sticker.
NOTE: This pump is equipped with a frequency
converter and may not be protected by a resid-
ual-current-operated protection switch. Fre-
quency converters can impair the function of
residual-current-operated protection circuits.
Exception: Residual-current-operated protection
switches which have a selective universal-cur-
rent-sensitive design are allowed.
• Labelling: RCD
• Trigger current: > 30 mA.
• Use power cables conforming to standards.
• Network protection: maximum acceptable 25 A
• Trigger characteristic of the fuses: B
• Suitable for use on a circuit capable of delivering
not more than 5000 rms symmetrical Amperes,
480 V maximum when protected by CC, J or RK5
Class Fuses, rated 20 A
• Internal overload protection operates prior to
reaching the 110% of the motor full load.
• As soon as the power supply of the converter has
been activated, a 2 second display test is carried
out, where all characters on the display are
shown (Fig. A5, ref. 6).
Tightening torque lbf.ft ± 10% / lb.in ± 10% (Nm ± 10%)
(if not otherwise specified) (1 ft = 12 in)
3/36 (3.5)
3
/ 36
(4+0.5)
+0.37
+4.44
1.5/18 (2)
0.6/7.2 (0.8)
/ 4.8
(0.5+0.1)
+0.07
+0.84
0.4/4.8 (0.5)
Plugging of the cable without tools.
Releasing of the cable with a screwdriver.
4/48 (6)
6/72 (8)
8/96 (11)
WILO SE 05/2014
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