HYDROO 20HQX-1, Руководство по эксплуатации, Страница: 8 / 9

14 15
XI. faUlt fINDING aND SOlUtION cHaRt
Fault Cause Solution
Motor does not rotate
1. Motor is broken
2. Impeller is blocked.
3. There is grain in the volute
1. Repair motor
2. Reassemble or send
to HYDROO for repair
3. Disassemble, remove grain
Not enough flow
1. Pipes are blocked.
2. There is no leading water in the pump
3. The valve is closed or open half
4. The suction height is too high
for the pump.
5. Pump rotates reversely.
6. Low rotating speed.
7. Liquid temperature is too high,
or there is volatile liquid
8. Too much energy is cost at the pipe
9. Rotating part wears out.
1. Clean pump or pipe
2. Fill leading water fully.
3. Open valve
4. Recheck installation height.
5. Check rotating sign, re-con-
nect cables.
6. Check rotating speed, check
if voltage is too low.
7. Consult HYDROO.
8. Re-design pipes
9. Replace wearing parts
At first, pumps water, but
no water comes out soon.
1. Not enough leading water
2. Too much suction head.
3. Air is sucked
1. Fill leading water fully.
2. Lower the pump installation
place.
3. Check the suction pipe or
check the seal to see if there
is gas leakage.
Water leaks from pump.
1. The mechanical seal is not fit well.
2. The mechanical seal is broken
or wears out.
1. Refit the mechanical seal.
2. Replace mechanical seal
Too much noise
1. The motor bearing wears out.
2. The impeller is blocked
1. Replace bearing or motor
2. Refit the impeller or send
pump to HYDROO.
The motor
temperature is too
high, smokes out
and smells bad
1. It is overloaded.
2. The voltage is not correct.
3. The cables connection is not correct.
4. The cables are not contacted well.
5. There is grain in the motor which block
the fan.
1. Adjust outlet valve, run
the pump at the specified
pressure.
2. Check the voltage
3. Re-connect the cables
according to the motor cables
connecting drawing.
4. Reconnect the cables and
tight them.
5. Get rid of grain.
XII. ImpORtaNt NOtIcE
1.- The content of this manual is subject to change at all times without further notice;
2.- Under the situation of adequate selection of the type and normal operation, the
guarantee of repair for the pump is 2 yearas. Normal abras¬ion of wearing parts is
not within this limit;
3.- During the guarantee period, the consumer shall hold all liabilities for the quality
problems due to disassembly by himself.