Commissioning en
Installation and operating instructions Wilo-Padus UNI 17
In the version with an attached plug, the thermal motor monitor-
ing 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 activa-
tion 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 recommended 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
ƒ Electrical work: A qualified electrician must carry out the elec-
trical work.
ƒ Operation/control: Operating personnel must be instructed in
the functioning of the complete system.
7.2 Operator responsibilities
ƒ Providing installation and operating instructions by the pump
or at a place specially reserved for it.
ƒ Making the installation and operating instructions available in
the language of the personnel.
ƒ Making sure that the installation and operating instructions are
read and understood by all personnel.
ƒ All safety devices and emergency cut-outs on the system-side
must be active and checked to ensure that they work properly.
ƒ The pump is suitable for use under the specified operating
conditions.
7.3 Direction of rotation check (for three-phase current
motors only)
The pump is factory-checked and adjusted to the correct direc-
tion of rotation for a clockwise rotating field. Connection is made
in accordance with the specifications in chapter “Electrical con-
nection”.
Direction of rotation check
A qualified electrician checks the rotating field at the mains con-
nection with a rotating field-test device. For the correct direction
of rotation, a clockwise rotating field must be available at the
mains connection. The pump is not approved for operation with a
counter-clockwise rotating field! CAUTION!If the direction of
rotation is checked with a test run, comply with the ambient
and operating conditions!
Incorrect direction of rotation
If the direction of rotation is incorrect, exchange the two phases
at the mains connection.
7.4 Before switching on
Check the following prior to activation:
ƒ Check whether the device has been installed properly and in
accordance with the locally applicable regulations:
– Has the pump been earthed?
– Layout of power supply cable tested?
– Electrical connection made properly?
– Mechanical components attached correctly?
ƒ Check level control:
– Float switches can move freely?
– Switching level tested (pump on, pump off, minimum water
level)?
– Additional dry-running protection installed?
ƒ Test operating conditions:
– Min./max. temperature of the fluid tested?
– Max. immersion depth tested?
– Operating mode defined depending on the minimum water
level?
– Maximum switching frequency adhered to?
ƒ Check installation location/operating space:
– Pipe system on the pressure side free of deposits?
– Inlet or pump sump cleaned or free of deposits?
– All gate valves open?
– Minimum water level defined and monitored?
The hydraulics housing must be filled completely with the
fluid and there must be no air cushions in the hydraulics.
NOTICE!Provide suitable venting devices if there is a risk
of air cushions being formed in the system!
7.5 Switching on and off
During the start process, the rated current is temporarily ex-
ceeded. During operation, the rated current may no longer be ex-
ceeded. CAUTION!If the pump does not start, switch off the
pump immediately. Remove the fault before reactivating the
pump!
Place pumps which are installed as portable pumps on a firm sur-
face so they are level. If pumps have fallen over, place them up-
right again before activating them. Securely attach the pump with
screws in case of difficult surfaces.
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