PYD Electrobombas VERTI, Руководство оператора, Страница: 11 / 36

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OPERATING AND MAINTENANCE MANUAL
SERIE VERTI
11
10. TROUBLE SHOOTING
Check the pump after power cut-off.
Problem Cause Solution
The motor can not be started
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
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.
Capacitor is burned out Replace with a sarne type capaci-
tor (send to the maintenance point
for repair).
The rotating shaft and bearing are
jammed.
Replace the bearing (send to the
maintenance point for repair).
Impeller is jammed. Turn rotating shaft of the fan
blade terminal with screw driver to
let it rotate flexibly or demount the
pump body to clear sundries.
Stator winding is damaged Replace winding coils (send to the
maintenance point for repair)
The motor is in operation, but
no water is discharged
Incorrect direction of pump
rotation
Invert two-phase wirings of the
motor (three-phase motor).
The pump is not fullyfilled with
water
Re-fill the pump with water.
The impeller is damaged. Replace the impeller (send to the
maintenance point for repair).
Leakage of the suction pipe. Check sealing of various joints of
the inlet pipelines.
Water level is too low. Adjust installation height of the
pump.
Freeze caused by accumula-
ted water in the pipeline or the
chamber.
Start up the pump after ice is
melted
Insufficient pressure
Incorrect pump type. Select suitable pump.