CALPEDA IRR 25/4/B 230/400/50 Hz 70H00073000 Инструкция к Calpeda IRR 25/4/B 70H00073000 онлайн [11/28] 865548
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I-IR-IRR Rev9 - Operating Instructions Page 11 / 28
12. TROUBLESHOOTING
OFF
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.
Strictly follow the user instructions and if necessary contact an authorised service centre.
PROBLEM
PROBABLE CAUSES POSSIBLE REMEDIES
1)
The motor does
not start
1a) Unsuitable power supply
1b) Incorrect electrical connections
1c) Engine overload protective device cuts
in.
1d) Blown or defective fuses
1e) Shaft blocked
1f) Motor failed
1a) Check that the mains frequency and voltage are suitable.
1b) Connect the power supply cable correctly. Check the setting of the
thermal overload protection.
1c) Check the power supply and make sure that the pump shaft is turning
freely. Check the setting of the thermal overload protection.
1d) Replace the fuses, check points a) and c)
1e) See “Blocked pump” instruction booklet
1f) Repair or replace the engine.
2)
Pump blocked
2a) Prolonged periods of inactivity .
2b) Presence of solid bodies in the gears
2c) Bearings or bearing sleeve siezed
2a) Unblock the pump by using a screw driver to turn the relevant notch
on the back of the shaft.
2b) Remove any solid foreign bodies inside the gears
2c) Replace the bearings or bearing sleeve.
3)
The pump
functions
but no liquid
comes out
3a) Presence of air inside the pump or
suction pipe
3b) Possible inltration of air.
3c) Foot valve blocked or suction pipe not
fully immersed in liquid
3d) Suction lter blocked
3a) Release the air from the pump using the delivery control valve.
3b) Check which part is not tight and seal the connection.
3c) Clean or replace the bottom valve and use a suitable suction pipe .
3d) Clean the lter, if necessary, replace it . See point 2b) also.
4)
Insufcient ow
4a) Pipes and accessories with diameter
too small
4b) Presence of deposits or solid bodies
in the impeller
4c) Rotor deteriorated
4d) Worn rotor and pump case
4e) Gases dissolved in the water
4f) Excessive viscosity of the liquid
pumped
4g) Incorrect direction of rotation
4a) Use pipes and accessories suitable for the specic application
4b) Clean the impeller and install a suction lter
4c) Replace the impeller
4d) Replace the impeller and the pump casing
4e) Perform the opening and closing manoeuvres through the feeder gate
4f) The pump is unsuitable
4g) Invert the electrical connections in the terminal board
5)
Noise and
vibrations
from the pump
5a) Worn bearings or bearing sleeve
5b) Unbalanced power supply
5a) Replace the bearings or bearing sleeve
5b) Check that the mains voltage is right
6)
Leakage from
the mechanical
seal rings
6a) The pump has run dry
6b) Mechanical seal rings scratched by
the presence of abrasive parts in the
pumped liquid
In cases 6a), 6b), replace the mechanical seal rings
6a) Make sure that the pump casing are full of liquid and that all the air
has been expelled.
6b) Install a suction lter
.
I-IR-IRR Rev9.indd 11 19/09/17 08:12
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