salmson SCX-DCX Instalacion Y Puesta En Servicio página 47

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
overloading
of the pump.
Remedy a) Throttle
the pump at
the pressure
side to an
operating
point on the
performance
curve.
Display Displays of the lights in the terminal box type
4a
-
Fault acknowl- Terminal box type 4a and 4b:
edgement Auto-reset; after the motor has cooled down, the pump restarts auto-
matically.
Terminal box type 4c and 4d:
If the thermal protection was connected to external switchgear, this
must be reset.
If the operating fault cannot be remedied, please consult skilled craft firms
or the nearest Salmson after-sales service point or representative.
Installation and operating instructions Salmson SCX-DCX / SXM-DXM / SXS / NSB-S
b) Switch off because
of obstruction within
the pump.
b) If necessary
remove the vent
screw (visible 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:
Deinstallation of the
motor head check; if
necessary perform
deblocking by rotat-
ing the impeller. If the
obstruction cannot
be cleared, contact
after-sales.
4b 4c 4d
green green green
c) Switch off d) Switch off
because of because of
excessive excessive
fluid temper- ambient
ature. temperature.
c) Reduce the d) Reduce the
temperature ambient
of the fluid, temperature ,
see name e.g. by insu-
plate data. lating the
pipework and
fittings.
English
47