Troubleshooting - Saci pumps VG Serie Instrucciones De Instalación Y Manejo

SD/SV Series Submersible Pumps

Troubleshooting

Trouble
Pump does not
(1) Power failure
start. Starts, but (2) Large discrepancy between power source and
immediately stops.
(3) Significant drop in voltage
(4) Motor phase malfunction
(5) Electric circuit connection faulty
(6) Faulty connection of control circuit
(7) Fuse blown
(8) Faulty magnetic switch
(9) Water is not at level indicated by Float
(10) Float is not in appropriate level
(11) Float effective
(12) Short circuit breaker is functioning
(13) Foreign matter clogging pump
(14) Motor burned out
(15) Motor bearing broken
Operates, but
(1) Prolonged dry operation has activated motor
stops after a while.
(2) High liquid temperature has activated motor
(3) Reverse rotation
Does not pump.
(1) Reverse rotation
(2) Significant drop in voltage
Inadequate
volume.
(3) Operating a 60Hz pump on 50Hz
(4) Discharge head is high
(5) Large piping loss
(6) Low operating water level causes air suction
(7) Leaking from discharge piping
(8) Clogging of discharge piping
(9) Foreign matter in suction inlet
(10) Foreign matter clogging pump
(11) Worn impeller
Over current
(1) Unbalanced current and voltage
(2) Significant voltage drop
(3) Motor phase malfunction
(4) Operating 50Hz pump on 60Hz
(5) Reverse rotation
(6) Low head. Excessive volume of water
(7) Foreign matter clogging pump
(8) Motor bearing is worn or damaged
Pump vibrates;
(1) Reverse rotation
excessive (2) Pump clogged with foreign matter
operating noise.
(3) Piping resonates
(4) Gate valve is closed too far
Cause
voltage
protector and caused pump to stop
protector and caused pump to stop
! WARNING :
! WARNING :
(1)~(3) Contact electric power
company and devise
counter-measures
(4) Inspect electric circuit
(5) Correct wiring
(6) Inspect connections and magnetic
switch
(7) Replace with correct type of fuse
(8) Replace with correct one
(9) Raise water level
(10) Adjust the position of float
(11) Repair or replace
(12) Repair location of short circuit
(13) Remove foreign matter
(14) Repair or replace
(15) Repair or replace
(1) Raise stop water level
(2) Lower liquid temperature
(3) Correct rotation
(1) Correct rotation(see Operation)
(2) Contact electric power company
and devise counter-measures
(3) Check nameplate
(4) Recalculate and adjust
(5) Recalculate and adjust
(6) Raise water level or lower pump
(7) Inspect, repair
(8) Remove foreign matter
(9) Remove foreign matter
(10) Remove foreign matter
(11) Replace impeller
(1) Contact electric power company
and devise counter-measure
(2) Contact electric power company
and devise counter-measure
(3) Inspect connections and magnetic
switch
(4) Check nameplate
(5) Correct rotation (see Operation2)
(6) Replace pump with low head pump
(7) Remove foreign matter
(8) Replace bearing
(1) Correct rotation
(2) Disassemble and remove foreign
matter
(3) Improve piping
(4) Open gate valve
6
Remedy