57
ENG
Error description
WTS LARGE +0300131IT rel. 1.0 - 05.09.2022
List of possible faults and error codes (sequel)
Problem Possible cause Action
Reduction of the permeate rate.
Decrease of permeator inlet pressure
Check pump P, make sure it is running correct-
ly, replace it if necessary.
Readjust the pressure to the sizing values and
adjust the bypass inside pump P if necessary.
Increase the pressure loss at the membrane
due to blockages caused by hardness minerals
Check the process parameters and contact
the supplier to arrange for replacement of the
membrane(s) if necessary.
The pressure switches have lost calibration, are
worn or no longer function correctly.
Adjust or reset the ow rate and pressure to
match the process values.
Check the electrical connections.
Blocked piping. Correct the cause.
Reduction of the water ow rate.
If necessary, check the water supply or adjust
the shut-o valves in front of the system.
Filter cartridges blocked. Replace the lter
elements.
The parameters of the water entering the
system have changed.
Contact your supplier or the manufacturer.
Immediate stop (within one minute after
start-up).
The pressure switches installed on the PVC
distributor of the permeate are not working
correctly or are not calibrated.
Check the function of the pressure switches
and replace them if necessary.
Inlet pressure of the expansion vessel is too
low. Membrane of the expansion vessel is
damaged.
Check the inlet pressure of the expansion tank
and replace it if it is damaged.
The solenoid valves do not open
Control board or the solenoid valve coil is not
supplied with voltage.
Restore the power supply to the control
board and/or check the connections and the
solenoid valve supply.
Solenoid valve is defective. Replace the solenoid valve.
Incorrect pressure. Check the water inlet pressure.
Process parameters not correct. Check the parameter settings.
High permeate conductivity The membrane(s) is/are blocked or contami-
nated.
Replace the membrane(s). Contact your sup-
plier or the manufacturer.
Low water pressure
Low water pressure Inlet valves closed
Check the water inlet pressure.
Check the function of the solenoid valve.
Decreasing ow rate Blocked lter cartridges. Replace them.
The osmosis production does not start althou-
gh it is activated and no alarm has been given. The pressure switches doesn`t supply a signal.
Check the connections and the function of
the pressure switches and replace them if
necessary.
The fuse that protects the pump is blown. Replace the fuse and test pump operation.
The system does not carry out the set sequen-
ces.
Power supply failure. Check the power supply.
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