Pentax EN6A Instrucciones De Uso página 34

7
PROBLEMS,PROBABLE CAUSES AND
POSSIBLE SOLUTIONS
• TABLE FOR SEEKING FAILURES
The search for the failures and for the possible repair interventions must comply with ALL THE SAFETY PRECAUTIONS reported in chapt.
6 "MAINTENANCE" and in chapter 3 "SAFETY" .
PROBLEMS
1 - The electropump does not start. ........
2 - The overload protection cuts in:
2. ) - Accidentally. ...........................
1
) - Sistematically. .........................
2.
2
3 - The electropump delivers no water. ...
4 - The pump delivers a poor capacity. ...
5 - The electropump vibrates and is noisy.
6 - The electropump rotates in reverse when
it is stopped.
PROBABLE CAUSES
A) - No mains voltage. .........................
B ) - Fuses blown. .................................
1
- Inadequate fuses.
B ) - Motor or power supply cable are
2
damaged.
C) - Overload protection previously cut in .
A) - Foreign bodies between fixed and
rotating parts.
B) - Lack of a phase on the mains. ........
C) - Incorrect setting. ............................
D) - Rotor locked. .................................
E) - Low input voltage. .........................
A) - The dynamic level descends below the
strainer (water coming out can be
intermittent).
B) - Impellers and bowls occluded by sand
or other solids.
C) - Jammed chack-valve. .....................
D) - Breaking of the shaft. .....................
A) - The strainer is partially occluded.
B) - The motor turns in the contrary direction.
C) - Line-voltage too low. ......................
D) - Worn out electropump. ..................
E) - Volumetric losses of water in the
pipeline
A) - The dynamic level descends below the
strainer (water coming out can be
intermittent).
B) - Water with a high gas content.
C) - Bronze bushings and bearings worn out.
D) - Dynamic water level of the well lower
than suction outlet of the pump.
E) - Foreign bodies between fixed and
rotating parts.
A) - Faulty check valve. .........................
15
17
POSSIBLE SOLUTIONS
A) - Provide electric input.
) - Replace the fuses with suitable ones.
B
1
B ) - Repair the motor or replace the cable
2
(please call in the electrician) .
C) - Reset the protection.
(If it cuts in again, see point 2) .
A) - Clean inside the pump body.
B) - Reset the correct electric connection
(please call in the electrician) .
C) - Check the setting amperes.
D) - Check the input; if too high, contact
the manufacturer.
E) - Ask for technical-electric service.
A) - Reduce the capacity by closing the
gate-valve (install the level switch).
B) - Send the set to the Factory and have it
overhauled.
C) - Disassemble the valve housing and unlock.
D) - Send the set to the Factory and have it
overhauled.
A) - Remove the set and clean the well.
B) - Reverse the phase.
C) - Ask for a technical-electric intervention.
D) - Send the set to the Factory and have it
overhauled.
E) - Remove the set and check.
A) - Reduce the capacity by closing the
gate-valve (install the level probes).
B) - Increase the water level on the pump.
C) - Send the set to the manufacturer for
the overhaul.
D) - Verify the water level and low the pump.
E) - Clean.
A) - Replace or repair foot valve.