Direction Of Rotation Check (For Three-Phase Current Motors Only); Before Switching On; Switching On And Off - Wilo Padus UNI Einbau- Und Betriebsanleitung

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7.3 Direction of rotation check (for three-phase current
motors only)
The pump is factory-checked and adjusted to the correct
direction of rotation for a clockwise rotating field. Con-
nection is made in accordance with the specifications in
chapter "Electrical connection".
Direction of rotation check
A qualified electrician checks the rotating field at the
mains connection 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:
▪ 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?
▪ Check level control:
– Float switches can move freely?
– Switching level tested (pump on, pump off, minimum
water level)?
– Additional dry-running protection installed?
▪ 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?
▪ 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 hy-
draulics. NOTICE! Provide suitable venting devices if
there is a risk of air cushions being formed in the
system!
44
Commissioning
7.5

Switching on and off

During the start process, the rated current is temporarily
exceeded. During operation, the rated current may no
longer be exceeded. 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 surface so they are level. If pumps have fallen over,
place them upright again before activating them. Se-
curely attach the pump with screws in case of difficult
surfaces.
Pump with attached float switch and plug
▪ Single-phase current version: After inserting the plug
into the socket, the pump is ready for operation. The
pump is switched on and off automatically depending on
the fill level.
▪ Three-phase current version: After inserting the plug
into the socket, the pump is ready for operation. The
pump is controlled via two switches on the plug:
– MANUAL/AUTO: Determines if the pump is switched
on and off directly (MANUAL) or depending on the fill
level (AUTO).
– ON/OFF: Switch pump on and off.
Pump with vertical float switch
After inserting the plug into the socket, the pump is
ready for operation. The pump is switched on/off de-
pending on the selected operating mode of the float
switch:
▪ "AUTO" operating mode: The pump switches on and off
depending on the fill level.
▪ "MANUEL" operating mode: The pump switches on im-
mediately after the plug has been inserted into the
socket.
NOTICE! Set the operating mode at the switch. The
switch is located above the upper float switch.
Pump with attached plug
▪ Single-phase current version: After inserting the plug in
the socket, the pump is switched on.
▪ Three-phase current version: After inserting the plug
into the socket, the pump is ready for operation. The
pump is switched on and off with the ON/OFF switch.
Pumps with bare cable end
The pump must be switched on and off using a separate
operating point (on/off switch, switchgear) provided by
the customer.
WILO SE 2019-02