Wilo TOP-S Instrucciones De Instalación Y Funcionamiento página 48

English
Fault
Cause
Remedy
Display
Fault acknowl-
edgement
If the operating fault cannot be remedied, please consult an installer or the
nearest Wilo customer service point or representative.
44
With the power switched on, the pump does not run.
Motor protection has switched the pump off, because:
a) Switch off b) Switch off because of
because of obstruction within the
hydraulic over- pump.
loading of the
pump.
a) Throttle the b) If necessary remove
pump at the the venting screw (visi-
pressure side to ble from outside) from
a duty point on the pump and check the
the pump free running of the pump
curve. rotor by turning the
slotted shaft end, using
a screwdriver; unblock if
necessary.
Alternatively:
Dismantle the motor
head and check; if nec-
essary unblock by turn-
ing the impeller. If the
obstruction cannot be
cleared, contact cus-
tomer service.
Displays of the lights in the terminal box type
1
-
Terminal box type 1/2
Auto-reset; after the motor has cooled down, the pump restarts automatically.
Terminal box type 3/4/5/7:
It the thermal winding contact was connected to an external switchgear SK602/
SK622, this must be reset. With the switchgear SK602N/SK622N, acknowledge-
ment is made automatically after the motor has cooled down.
Terminal box type 6:
After the motor protection has tripped, switch off the mains voltage. Allow the
pump to cool down approx. 8 to 10 min, then switch the power supply on again.
c) Switch off
because of
excessive fluid
temperature.
c) Reduce the
temperature of
the fluid, see
rating plate
data.
2 3 4
- - -
d) Switch off
because of
excessive
ambient tem-
perature.
d) Reduce the
ambient tem-
perature , e.g.
by insulating
the piping and
fittings.
5 6 7
green green green
WILO SE 08/2020