Troubleshooting - Calpeda CT Serie Instrucciones De Uso

12. TROUBLESHOOTING

WARNING: Turn off the power supply before performing any operations.
Do not allow the pump or motor to run when dry even for a short period.
OFF
Strictly follow the user instructions and if necessary contact an authorised service centre.
PROBLEM PROBABLE CAUSES
1) 1a) Unsuitable power supply
The motor does 1b) Incorrect electrical connections
1c) Engine overload protective device cuts
not start
in.
1d) Blown or defective fuses
1e) Shaft blocked
1f) If the above causes have already
been
malfunctioning
2) 2a) Prolonged periods of inactivity with
Pump blocked formation of rust inside the pump
2b) Presence of solid bodies in the pump
rotor
2c) Bearings siezed
3Ε) PΤssόbΠά όΣзΠtΧΕtόΤΣ Τέ ΕόΧ έΧΤΡ suΗtόΤΣ
3)
tubά ΗΤΣΣάΗtόΤΣs, ΘΧΕόΣ ΥΠuήs ΤΧ зΠΠόΣή
The pump
functions of pump or from the gaskets of the
but no water suction pipe
comes out 3b) Foot valve blocked or suction pipe not
fully immersed in liquid
3Η) SuΗtόΤΣ зΠtάΧ bΠΤΗώάΘ
4) 4a) Pipes and accessories with diameter
IΣsuέзΗόάΣt иΤα
too small causing excessive loss of
head
4b) Presence of deposits or solid bodies in
the internal passages of the rotor
4c) Rotor deteriorated
4Θ) WΤΧΣ ΧΤtΤΧ ΕΣΘ ΥuΡΥ ΗΕsά
4e) Excessive viscosity of the liquid
pumped (if other than water)
4f) Incorrect direction of rotation
4g) Suction head excessive in relation to
the suction capacity of pump
4h) Suction pipe too long
5) 5a) Rotating part unbalanced
5b) WΤΧΣ bάΕΧόΣήs
Noise and
5Η) PuΡΥ ΕΣΘ ΥόΥάs ΣΤt зΧΡΠγ ΕttΕΗίάΘ
vibrations
from the pump 5d) Flow too strong for the diameter of the
delivery pipe
5e) Functioning in cavitation
5f) Unbalanced power supply
5g) Incorrect alignment of pump-motor unit
6) 6a) The mechanical seal has functioned
Leakage from when dry or has stuck
the mechanical 6b) Mechanical seal scored by presence
seal of abrasive parts in the liquid pumped
6c) Mechanical seal unsuitable
type of application
6Θ) SΠόήίt όΣόtόΕΠ ΘΧόΥ ΘuΧόΣή зΠΠόΣή ΤΧ ΤΣ зΧst
start-up
CT,T, TP, Rev24 - Operating Instructions
checked, the engine may be
for the
www.calpeda.su
POSSIBLE REMEDIES
1a) Check that the mains frequency
electrical characteristics shown on the indicator plate
1b) Connect the power supply cable to the terminal board correctly. Check
that the thermal overload protection is set correctly (see data on the
engine indicator plate) and make sure that the fuseboard upline of the
engine has been properly connected
1c) Check the power supply and make sure that the pump shaft is turning
freely. Check that the thermal overload protection has been set
correctly (see engine indicator plate)
1d) Replace the fuses, check the electric power supply and points a) and c)
1e) Remove the cause of blockage as indicated in the "Blocked pump"
instruction booklet
1f) Repair or replace the engine by applying to an authorised service
centre
2a) Rotation may be started directly from the pump shaft or from the
ύΤόΣt (ΧάΡάΡbάΧ tΤ tuΧΣ Τέέ tίά άΠάΗtΧόΗόtγ suΥΥΠγ зΧst ) ΤΧ ΗΤΣtΕΗt ΕΣ
authorised service centre
2b) If possible, dismantle the pump casing and remove any solid foreign
bodies inside the rotor, if necessary contact an authorised service
centre
2c) If the bearings are damaged replace them or if necessary contact an
authorised service centre
3a) Check which part is not tight and seal the connection adequately
3b) Clean or replace the bottom valve and use a suction pipe suitable for
the application
3Η) CΠάΕΣ tίά зΠtάΧ, όέ ΣάΗάssΕΧγ, ΧάΥΠΕΗά όt . Sάά ΥΤόΣt 2Ε) ΕΠsΤ.
4Ε) Usά ΥόΥάs ΕΣΘ ΕΗΗάssΤΧόάs suόtΕbΠά έΤΧ tίά sΥάΗόзΗ ΕΥΥΠόΗΕtόΤΣ
4b) CΠάΕΣ tίά ΧΤtΤΧ ΕΣΘ όΣstΕΠΠ Ε suΗtόΤΣ зΠtάΧ tΤ ΥΧάvάΣt ΤtίάΧ έΤΧάόήΣ
bodies from entering
4c) Replace the rotor, if necessary, contact an authorised service centre
4d) Replace the rotor and the pump casing
4e) The pump is unsuitable
4f) Invert the electrical connections on the terminal board or control panel
4g) Try to close the feeder gate partially and/or reduce the difference in
level of the pump and the liquid being aspirated
4h) Bring the pump closer to the suction tank so as to use a shorter pipe.
If necessary use a pipe of a wider diameter
5a) Check that no solid bodies are obstructing the rotor
5b) Replace the bearings
5c) Anchor the delivery and suction piping as needed
5Θ) Usά bόήήάΧ ΘόΕΡάtάΧs ΤΧ ΧάΘuΗά tίά ΥuΡΥ иΤα
5ά) RάΘuΗά tίά иΤα bγ ΕΘύustόΣή tίά έάάΘάΧ ήΕtά ΕΣΘ/ΤΧ usόΣή ΥόΥάs αόtί
a bigger internal diameter. See point 4g) too
5f) Check that the mains voltage is right
5g) If necessary, the unit must be re-aligned
In cases 6a), 6b) and 6c), replace the seal, if necessary contact an
authorised service centre
6a) Make sure that the pump casing (and the suction pipe if the pump is
not self-priming) are full of liquid and that all the air has been expelled.
See point 5 e) too.
6b) IΣstΕΠΠ Ε suΗtόΤΣ зΠtάΧ ΕΣΘ usά Ε sάΕΠ suόtάΘ tΤ tίά ΗίΕΧΕΗtάΧόstόΗs Τέ tίά
liquid being pumped.
6Η) CίΤΤsά Ε sάΕΠ αόtί ΗίΕΧΕΗtάΧόstόΗs suόtΕbΠά έΤΧ tίά sΥάΗόзΗ ΕΥΥΠόΗΕtόΤΣ
6d) WΕόt έΤΧ tίά sάΕΠ tΤ ΕΘύust tΤ tίά ΧΤtΕtόΤΣ Τέ tίά sίΕέt. Iέ tίά ΥΧΤbΠάΡ
persists, see points 6a), 6b) or 6c) or contact an authorised service centre.
and voltage correspond to the
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