Burks BPLHS Series, Инструкция по установке и эксплуатации

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14
SECTION: J - Failures:
J-1) Failure table:
WARNING
Observe the general safety precautions before install, maintenance and repair.
Problem Possible Cause Possible Solution Checkpoints
Leakage along the shaft Running surfaces of the
mechanical seal worn or damaged Replace the mechanical seal Check the pump for dirt-abrasive
parts
New pump: seal stuck due to
assembly Open and close the outlet shut-off
valve quickly during operation
Mechanical seal mounted
incorrectly Install the mechanical seal
correctly. Use water and soap as
a lubricant
Elastomers affected by medium Use the right rubber compound for
the mechanical seal
Pressure too high Use the right type of mechanical
seal
Shaft worn Replace shaft and mechanical seal
Pump has been operating without
water Replace the mechanical seal
Leakage along the
shroud at the top bracket
or at the pump foot O-ring worn Replace the O-ring
O-ring not resistant to the medium
to be pumped Replace O-ring by an O-ring with
better resistance
Too much tension on the pump
foot; it becomes oval Decrease tension on piping
Mount the pump foot tensionless
Support the connections
Pump is vibrating or noisy Coupling mounted incorrectly Install the coupling in parallel
Faulty settling of the hydraulic
assembly Adjust the assembly according to
the manual
There is no water in the pump Fill and vent the pump
No supply Make sure there is suf fi cient
supply. Check for blockages in the
supply line
Bearings of pump and/or motor
worn Have the bearings replaced by a
certi
fi ed company
Available NPSH too low
(cavitation) Improve suction condition
Pump does not operate in its
working range Select another pump or adjust the
system to work within its working
range
Pump is standing on an uneven
surface Level the surface
Malfunction Internal blockage in the pump Have the pump inspected by a
certi
fi ed company
Pump does not start No voltage on the terminal clamps Check the power supply • Circuit
• Main
Switch
• Fuses
Check the motor safety relay • Earth leakage switch
• Protective
relay
Thermal motor safety switch
triggered Reset the thermal motor-safety.
Contact the supplier, if this
problem occurs more often.
The motor is running, but
the pump does not work The motor shaft has been broken Contact the supplier
The pump shaft has been broken Contact the supplier
The coupling between pump and
motor shaft is loose Tighten the connecting screws to
the recommended torque