en – Original Instructions
30
e-IXP, e-IXPC, e-IXPF series – Additional Installation, Operation and Maintenance Instructions
7
Troubleshooting
7.1
Precautions
Before starting the work, make sure that the safety instructions shown in
on page 26 have been
fully read and understood.
WARNING:
Maintenance must be done by a technician possessing the technical-professional requirements
outlined in the current regulations.
WARNING:
If a fault cannot be corrected or is not mentioned, contact Xylem or the Authorised Distributor.
7.2
The unit does not start
Cause
Solution
Electric power supply cut off
Restore the electric power supply
The thermal overload protection of the motor has been triggered
Reset the thermal overload protection on the control panel or the
unit
The device for protection against the absence of liquid has tripped
•
Check the liquid level in the tank and/or
•
Adjust the device
If the problem continues, replace the device
Faulty capacitor (single-phase version)
Contact Xylem or the Authorised Distributor
Control panel faulty
Check and repair or replace the control panel
Unit faulty
Contact Xylem or the Authorised Distributor
7.3
The differential protection device (RCD) has tripped
Cause
Solution
Motor leaking
Check and repair or replace the motor
Differential of unsuitable type or faulty
Check the type of differential and/or replace it
7.4
The unit produces excessive noise and/or vibrations
Cause
Solution
Cavitation
Increase the NPSH
available in the system
Unsuitable anchoring to the ground
Check the anchoring to the ground
Plant resonance
Check the installation
Anti-vibration joint on the piping system not suitable or absent
Check and/or install the anti-vibration joint
Foreign bodies in the unit
Remove the foreign bodies
Motor bearings worn or faulty
Replace the motor bearings
Unit mechanically seized
Contact Xylem or the Authorised Distributor
2
Net Positive Suction Head
