Wilo TOP-Z Serie Instrucciones De Instalación Y Funcionamiento página 49

Fault The pump does not run when the power is switched on.
Cause Motor protection has switched the pump off, because:
a) Switch off
because of
hydraulic over-
loading of the
pump.
Remedy a) Throttle the
pump on the
pressure side to
a duty point on
the pump
curve.
Display Display of the lights in terminal box type
Fault acknowl- Terminal box type 1/2:
edgement Auto-reset; after the motor has cooled down, the pump restarts automatically.
Terminal box type 5/7:
After the motor has cooled down, press the reset button for a manual reset of
the fault. The pump will restart.
Terminal box type 3/4:
If the thermal winding contact has been connected to an external switchgear
SK602/SK622, it must be reset. The acknowledgement for switchgear SK602N /
SK622N occurs 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 for approx. 8 to 10 minutes, then switch the power supply
on again.
If the operating fault cannot be remedied, please consult a specialist techni-
cian or the nearest Wilo customer service point or representative.
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.
Alternatively:
Dismantle the motor
head and inspect;
unblock if necessary by
turning the impeller. If
the obstruction cannot
be cleared, contact the
customer service
department.
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
- red green
English
7
red
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