Trouble Shooting - PYD Electrobombas VERTI Serie Manual De Instalación Y Mantenimiento

OPERATING AND MAINTENANCE MANUAL
SERIE VERTI

10. TROUBLE SHOOTING

Check the pump after power cut-off.
Problem
The motor can not be started
The motor is in operation, but
no water is discharged
Insufficient pressure
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Cause
Single-phase power supply
(three-phase electric motor):
a. poor connection of the power
switch.
b. fuse is burned out.
c.loose power lead.
d. phase failure of the cable
Capacitor is burned out
The rotating shaft and bearing are
jammed.
Impeller is jammed.
Stator winding is damaged
Incorrect direction of pump
rotation
The pump is not fullyfilled with
water
The impeller is damaged.
Leakage of the suction pipe.
Water level is too low.
Freeze caused by accumula-
ted water in the pipeline or the
chamber.
Incorrect pump type.
11
Solution
a. repair switch contact or replace
the switch.
b. replace the safety fuse.
c. Check and tighten the power
con- nector.
d. repair or replace cables.
Replace with a sarne type capaci-
tor (send to the maintenance point
for repair).
Replace the bearing (send to the
maintenance point for repair).
Turn rotating shaft of the fan
blade terminal with screw driver to
let it rotate flexibly or demount the
pump body to clear sundries.
Replace winding coils (send to the
maintenance point for repair)
Invert two-phase wirings of the
motor (three-phase motor).
Re-fill the pump with water.
Replace the impeller (send to the
maintenance point for repair).
Check sealing of various joints of
the inlet pipelines.
Adjust installation height of the
pump.
Start up the pump after ice is
melted
Select suitable pump.