en – Original Instructions
32
SCUBA DRY – Additional Installation, Operation and Maintenance Instructions
7.8
The motor protector in the panel has tripped, three-phase version
Cause
Solution
It is calibrated at a value too low in relation to the rated current of
the motor
•
Repeat the motor protector calibration, and/or
•
Install a correctly sized motor protector
Missing power supply phase
Check the power supply and restore the phase
Loose and/or faulty motor protector connections
Tighten or replace the clamps and terminals
The unit does not turn freely due to a mechanical fault
Check and repair the unit
Power supply cord is damaged
Contact Xylem or the Authorised Distributor for the replacement
Wrong power supply voltage
Check the power supply voltage
Pumped liquid too thick
Check the pumped liquid
Panel installation room temperature too high
Lower the room temperature
Too many starts
See paragraph 7.4
Wrong duty point, flow rate below or above the permitted limits
Bring the flow rate back within the permitted limits
Unit faulty
Contact Xylem or the Authorised Distributor for the replacement
7.9
The unit produces excessive noise and/or vibrations
Cause
Solution
Resonance
Check the installation
Frequency converter wrongly calibrated (if present)
See the frequency converter manual
Foreign bodies in the unit
Remove the foreign bodies
The unit does not turn freely due to a mechanical fault
Send the unit to an authorised workshop for testing
Wrong duty point, flow rate below or above the permitted limits
Bring the flow rate back within the permitted limits
Presence of air in the unit
•
Bleed the unit and/or
•
Make a relief hole, see paragraph 4.3.2, and/or
•
Raise the liquid level, and/or
•
Increase the installation depth, and/or
•
Reduce the flow rate and/or
•
Replace the unit with another with lower performance levels
and/or
•
Increase the diameter of the suction pipe to reduce flow
resistance
Unit not secured or incorrectly secured to the foundation
Secure the unit to a concrete or metal foundation base sufficiently
strong to ensure permanent and sturdy support
7.10
The frequency converter is in error mode or turned off
The frequency converter (if present) is in error mode or turned off.
Cause
Solution
See the frequency converter manual
See the frequency converter manual
