Airtec RO Plus l - Page 91

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11. Troubleshooting
Pump not starting
Fault
code: Cause Solution
701
Pressure in vessel is still above start pressure. • System is ok.
702
System is in alarm. • See alarm description.
703
Pump fuse F1 is switch o. • Turn the fuse back on.
- If fuse switch back off immediately, check pump contactor and
pump motor.
- Measure Amp output to the motor.
704
Contactor K1 is defect. • See code 401.1.
705
Pump motor is defect. • See code 303.
706
PLC output defect. • See code 403.
Pump not stopping
Fault
code: Cause Solution
801
Pressure in vessel is below stop pressure, and a normal production
is on.
• System is ok.
802
Pressure transmitter is defect or has a loose wire. • Check display for feedback signal from transmitter.
• If the signal is 0 bar. Check wiring.
• Close output valve. If pressure is not climbing and you have flow, the
pressure transmitter is defect.
803
Pump kontactor K1 is defect. • See code 401.2.
804
Wiring done wrong after replacing control parts. • Go through wiring diagram and check that the wiring is following
the diagram.
805
PLC output is welded. • Turn off fuse F2. When display in PLC is out, and the pump is still
running, then the output on PLC is welded.
- Replace PLC, contact Airtec with system serial no and customer
name to ensure we supply you with the right PLC/software.
Noisy motor/pump
Fault
code: Cause Solution
901
Inlet water pressure to low. • See code 101.
902
Inlet solenoid valve not opening. • See code 102.
903
Pump worn out. • See code 302.
904
Motor defect. • Check the rubber part in the coupling, replace if damaged.
• See code 303 .
F1 F2
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