Commissioning; Personnel Qualifications; Operator Responsibilities - Wilo Padus UNI Einbau- Und Betriebsanleitung

electrical connection to be carried out by a qualified
electrician!
6.5.4 Three-phase current motor connection
PE L1
M 3~
Fig. 6: Connection diagram three-phase current motor
Wire number Designation
1 20
2 21
3 U
4 V
5 W
Green/yellow (gn-ye) Earth
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 es-
tablished by inserting the plug into a socket. The plug is
not overflow-proof. Install the socket so that it is over-
flow-proof! Observe the information on the protection
class (IP) of the plug.
▪ If there is a bare cable-end, the pump must be connec-
ted directly to the switchgear. DANGER! If the pump is
connected directly to the switchgear, arrange for the
electrical connection to be carried out by a qualified
electrician!
6.5.5 Monitoring device connection
All monitoring device must be connected!
6.5.5.1 Monitoring of motor winding
Single-phase current motor
Thermal motor monitoring is self-switching for single-
phase current motors. The monitoring function is always
active and does not need to be connected separately.
Installation and operating instructions Wilo-Padus UNI

Commissioning

L2 L3 20 21
Terminal
WSK
WSK
L1
L2
L3
PE
Three-phase current motor with bimetallic strip
Bimetallic strips are directly connected to the switchgear
or via an evaluation relay.
Connection values: max. 250 V (AC), 2.5 A, cos φ = 1
When the threshold is reached, deactivation must take
place.
In the version with an attached plug, the thermal motor
monitoring is pre-wired and set to the correct value in
the plug.
6.5.6 Motor protection adjustment
Motor protection must be set depending on the selected
activation type.
6.5.6.1 Direct activation
At full load, set the motor protection switch to the rated
current (see rating plate). At partial load, it is recommen-
ded to set the motor protection switch 5 % above the
current measured at the duty point.
6.5.7 Operation with frequency converter
Operation on the frequency converter is not permitted.
7 Commissioning
WARNING
Foot injuries due to a lack of protective equip-
ment!
Danger of (serious) injuries during work. Wear safety
shoes!
7.1

Personnel qualifications

▪ Electrical work: A qualified electrician must carry out the
electrical work.
▪ Operation/control: Operating personnel must be instruc-
ted in the functioning of the complete system.
7.2

Operator responsibilities

▪ Providing installation and operating instructions by the
pump or at a place specially reserved for it.
▪ Making the installation and operating instructions avail-
able in the language of the personnel.
▪ Making sure that the installation and operating instruc-
tions are read and understood by all personnel.
▪ All safety devices and emergency cut-outs on the sys-
tem-side must be active and checked to ensure that
they work properly.
▪ The pump is suitable for use under the specified operat-
ing conditions.
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