Mas Grup
13
12. POSSIBLE FAILURES, CAUSES, SOLUTIONS
Possible failures and solution strategies are listed in the table below. Please apply to th
e Customers’ Service Department of our company when a
generic solution is not found to your problem.
While the failures are repaired the pump must always be dry and un-pressurized.
ERROR
POSSIBLE CAUSES
POSSIBLE SOLUTIONS
Motor
is not working
No electricity
Electrical components should be checked by licensed electricians.
Low voltage
Check the voltage
Fuses cut down
Fuses should be replaced by licensed electricians
Float gauges are broken
Check the gauges.
Energy and control cable is broken.
Change the energy and control cables.
Low capacity or there is no
discharge
Reverse direction of rotation.
Check the rotation and correct it if necessary.
Discharge piping blocked.
Discharge piping should be cleaned up by backwashing.
Manometric head is too high.
Recalculate the static pressure and system losses.
Impeller/casing is blocked.
Clean inside of the pump.
Impeller had worn out.or broken
Change the impeller.
Overheat
The level of the stop float switch is too
low. Motor runs dry.
Increase the level of the stop float switch.
Manometric head is too high.
Adjust the flow control valve according to the manometric head stated on
the name plate.
Pumped liquid is very dense or its specific
gravity is high.
Adjust the flow control valve according to the current stated on the name
plate.
Water
leakage
Energy and control cable has been
crushed or torn.
Change the power cable.
O-rings are damaged.
Do not open the connections of electricity, motor body and oil bath. Call
MASDAF Services immediately for technical support.
Mechanical seals are damaged.
Inside of the casing filled with solid
particles.
Connections of relays are wrong.
Relay is broken
Table 6 -
Possible Failures, Causes, Solutions
