salmson MULTI-HE Série Mode D'emploi page 20

ENGLISH
8 . DEFAULTS–CAUSES-REMEDIES
CAUTION !
Before any operation, SWITCH OFF the pump(s).
ALL INCIDENTS HEREAFTER MENTIONED GIVE RISE TO THE RESTING OF THE FAILURE DETECTION RELAY.
SIGNALISATION
Reaction
GREEN RED time
LED LED before variator
stop
OFF ON Immediate
OFF ON Immediate
OFF ON Immediate
OFF ON <10s
OFF ON <60s
If the pump is completely stopped and an intervention on this one is necessary, cut the supply ; await2 minutes the discharge of the capacitors ;
correct the failure, switch on the supply again. If the defect is major, the action of an after-sales technician is required.
Other defects, not detected by the speed converter, due to the pump.
Before any operation, switch off the pump(s).
If the liquid is toxic, corrosive or dangerous for human being,
SALMSON or the qualified person in charge of the repairing
must be informed. In this case, clean the pump to ensure a
complete safety to the repairing man.
INCIDENTS
8.1 THE PUMP a) The pump does not run quickly
IS RUNNING enough. :
BUT NO DELIVERY b) The internal parts are obstructed
by particles :
c) Suction pipes are obstructed :
d) Air in suction pipes :
e) Pump is no more primed :
f) Suction pressure is too low, it
causes generally cavitation noise :
8.2 THE PUMP a) Loose on its foundation :
IS VIBRATING b) Particles obstructing the pump :
c) Difficult rotation of the pump :
8.3 NO SUFFICIENT a) The motor speed is not
PRESSURE high enough :
FOR THE PUMP b) The motor is defective :
c) Bad filling of the pump :
d) The draining plug is not fully
tightened :
8.4 THE FLOW a) The suction head (Ha) is
IS IRREGULAR not respected :
b) The suction pipe has a
lower diameter than the one
of the pump :
c) The strainer and the suction
pipe are partially obstructed :
BEHAVIOUR OF THE VARIATOR
Waiting State of the
time relay
before
restart Contact
No restart Open
Open
No restart
No restart Open
Open
No restart
Open
No restart
CAUSES
INCIDENTS / POSSIBLES CAUSES
a) The variator supply is
in over-voltage.
b) Load of the pump is excessive.
c) The motor is in short-circuit.
d) La pompe est en surcharge.
e) The sensor cable (4-20mA) is cut
(MODE 2 only).
a) Check the adequate adjustment of the requirement (conformity to the required
points).
b) Dismantle the pump, replace the defective components or clean.
c) Clean all the pipes.
d) Check tightness of the whole pipe up to the pump and seal it.
e) Fill the pump to prime again. Check foot valve is tight.
f) Too high losses of load on suction or suction head is too high (check the
NPSH of the pump installed and of the installation).
a) Check and tighten completely the nuts of the stud bolts.
b) Have the pump dismantled and clean it.
c) Check the pump turns freely without abnormal sticking.
a) Check the reference is correctly adjusted (conformity of the reference points).
b) Replace it motor/converter.
c) Open the venting device and vent until there are no more air bubbles at all.
d) Check it and screw it again.
a) Study again the installation conditions and the recommendations
described in this instruction.
b) The suction pipe must have at least the same diameter as the suction
pump port.
c) Remove and clean.
20
REPAIRING
- Check voltage at the variator terminals.
- Check voltage at the variator terminals.
- Dismantle the motor-variator of the pump,
check it or replace it.
- Density and/or viscosity of the conveyed fluid
are too big.
- Check the correct supply and the cable
connection of the sensor.
REMEDIES