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10. FAULTS, CAUSES AND REMEDIES
DANGER! SWITCH OFF the booster before any maintenance
or repair work!
INCIDENTS
10.1 ONE OR TWO
a) Air leak at suction:
PUMPS FAIL TO
PRIME
b) Large losses of head at suction:
c) Suction piping obstructed or valve on
suction manifold closed:
10.2 ONE PUMP NOT
a) Thermal relay tripped:
RUNNING
b) Magnetic circuit breaker or fuses
defective or blown:
c) Pump shaft blocked:
d) Winding fault:
10.3 NO DELIVERY
a) Flow higher than booster capabilities:
PRESSURE
b) One or two pumps are no more
primed:
c) A pump is obstructed by particles:
d) Voltage of the motors too low:
10.4 RANDOM OPE-
a) Pressure transmitter defective:
RATING, STAR-
b) Discharger not well adjust or no more
TING FREQUENCY
watertight:
TOO HIGH
10.5 TRIPPING FRE-
a) Float switch not well positioned or not
QUENCY OF DRY
working:
RUNNING SAFETY
b) Flow higher than system possibility:
TOO HIGH
10.6 OPERATING AUTO-
a) Control box or cabinet defective:
MATISM DEVICE
b) Wires disconnected:
DEFECTIVE
c) Transmitter defective:
10.7 DELIVERY CHECK
a) Valve diaphragm or ring destroyed:
VALVE NOT TIGHT
10.8 THE SYSTEM
a) The shut off valve is closed:
DON'T STOP OR
START
10.9 WATER FALL ON
a) Float switch for filling defective:
TOP OF TANK
11. SPARE PARTS
All spare parts must be ordered through SALMSON Customer
Services.
In order to avoid returns and incorrect orders, please specify the
name plate data for all orders.
Subject to technical alterations!
CAUSES
a) Check tightness of tall suction pipe connections.
Check that the level of suction in tank is cover.
b) Calculate the losses of head and make sure they are compatible with
the pump NSPH.
c) Check valve opening and clean the piping if necessary.
a) The pump "fault" indicator on the control box must be lit.
Check the setting of the thermal relay and reset it.
Check the direction of rotation, the coupling or the current requirement
of the motor concerned.
b) Check that the motor phases are not in short-circuit between them.
Replace the motor if necessary.
Reset the circuit breaker or replace the fuses (check their ratings).
c) Switch off the electric supply of the control box and then check the shaft
turns freely, if it is blocked, dismantle the pump.
d) Disconnect the terminal board of the terminal block and check the sta-
tor insulation to earth. Replace the motor if necessary.
a) Plan to replace the booster by a more adequate one (do not forget to
contact us in any case).
b) Check that the suction strainer does not let air in or the tank filling point is
too close from the strainer.
c) Have the pump dismantled and cleaned.
d) Check the voltage on motor terminals.
a) Check the setting: transmitter not stable, replace it if necessary.
b) Check adjustment of discharger, check the state of device, change
pieces if necessary.
a) Check the position of float switch, change them if necessay.
b) It could be necessary to replace the system (Consult us for this).
a) See starting instruction of the control box or cabinet.
b) Check all connections to the terminal block of the control box.
c) Check the contacts, change the transmitter concerned if necessary.
a) Change the valves.
a) Open the shut off valve pos.16.
a) Check the float switch, change them if necessary.
This float switch give information for the electrovalve of tank filling
17
REMEDIES
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