6-2
The piping is clogged with foreign matter.
Check and clean the piping.
User
[VKP-e] The suction port is exposed above
the liquid level. (3-3)
Adjust the liquid level, for example, by
refilling the tank with the liquid or by
lowering the installation position of the
pump.
User
There is a leak in the discharge pipe.
Check and repair the pipe.
Vendor
[VKN-e] Priming is insufficient. (4-1)
Sufficiently prime the pump. (4-1)
User
The bearing is worn or damaged. (5-1)
The grease is deteriorated. (5-1)
Replace the bearing. (5-1)
Contact the vendor because disassembly
and inspection are required.
Vendor
Overheat of
bearing
Incorrect installation of the pump and the
piping (3-2)
Check and correctly install them.
User
The bearing is worn or damaged. (5-1)
Replace the bearing. (5-1)
Contact the vendor because disassembly
and inspection are required.
Vendor
The motor is running in open-phase
condition.
Check the wiring.
User
The impeller is clogged with foreign matter,
thus leading to imbalanced load.
Disassemble and check.
Contact the vendor because disassembly
and inspection are required.
Vendor
Cavitation has occurred.
Contact the manufacturer and vendor.
User
Incorrect installation of the pump and the
piping (3-2)
Check and correctly install them.
User
Unusual noise
and unusual
vibration of the
pump
[VKN-e] Unusual noise from the shaft seal
(mechanical seal) (3-2)
Disassemble and check.
Contact the vendor because disassembly
and inspection are required.
Vendor
An abnormal
amount of liquid
is leaking from
the shaft seal.
[VKN-e] Damage to the mechanical seal
(5-1)
If the leakage becomes large, replace the
seal.
Contact the vendor because disassembly
and inspection are required.
Vendor
Water hammer
occurs.
Hammering has occurred when the valve is
rapidly opened and closed.
Provide a pressure damper (e.g.
accumulator).
User
* The persons who take the Action are specified here (Done by) only as a guide because the extent of
actions that can be taken is different depending on the user.
If you have anything unclear—even about the problems whose actions to be done by User, ask the
vendor or contact Teral.
