Wilo TOP-Z Instrucciones De Instalación Y Funcionamiento página 45

Fault With the power switched on, the pump does not run.
Cause Motor protection has switched the pump off, because:
a) Switch off
because of
hydraulic over-
loading of the
pump.
Remedies a) Throttle the
pump on the
pressure side to
an duty point
on the pump
curve.
Display
Display of the lights in the terminal box type
Fault Terminal box type 1/2:
acknowledge-
Auto-reset; after the motor has cooled down, the pump restarts automatically.
ment
Terminal box type 3/4/5/7:
It the thermal winding contact was connected to an external switchgear SK602/
SK622, this must be reset. For switchgear SK602N/SK622N the fault is auto-
matically acknowledged once the motor has cooled.
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 supply voltage on
again.
If the malfunction cannot be rectified, consult a specialist technician or the
nearest customer service centre or Wilo representative office.
Installation and operating instructions Wilo-TOP-Z
b) Switch off because of
obstruction within the
pump.
b) If necessary remove
the venting screw (visi-
ble from outside) from
the pump and check the
free running of the pump
rotor by turning the
slotted shaft end, using
a screwdriver; unblock if
necessary.
Alternative:
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.
1 2 3
- - -
c) Switch off d) Switch off
because of because of
excessive fluid excessive
temperature. ambient tem-
perature.
c) Reduce the d) Reduce the
temperature of ambient tem-
the fluid, see perature , e.g.
rating plate by insulating
data. the piping and
valves.
4 5 6
- green green
English
7
green
41