23
No water flow
Error on the flow meter signal
Check valves and pumps
Check the flow meter and it’s cable
connection
Deposits on quartz sleeves lamp
protection
Significant
variation
on
UV
transmittance of the water
Decrease of the UV-C output in
lamp(s) due to the lamp ageing
Deposits on quartz of the UV
sensor
Clean the quartz sleeve
Filter the water
Change the lamps
Clean the sensor
Deposits on quartz sleeves lamp
protection
Significant
variation
on
UV
transmittance of the water
Decrease of the UV-C output in
lamp(s) due to the lamp ageing
Deposits on quartz of the UV
sensor
Clean the quartz sleeve
Filter the water
Change the lamps
Clean the sensor
Lamp lifespan finished
Change the lamp(s) and restart the
lamp hour meter count down.
It’s visible in case of DS Plus or SMP systems. It’s visualized in case the UV
Irradiance (or Dose) is under the threshold level.
Possible Causes:
Solutions:
It’s visible in case of DS Plus or SMP systems. It’s visualized in case the UV
Irradiance (or Dose) is under the threshold level.
Possible Causes:
Solutions:
IMPORTANT
:
This alarm doesn’t switch the main relays.
It’s visualized in case the hour meter count down has arrived to 0. This means
that the lamp has finished the suggested working time.
Possible Causes:
Solutions:
It’s visible in case the system is connected to a flow meter. It’s visualized in case
the flow meter signal is 0 m
3
/h.
Possible Causes:
Solutions:
IMPORTANT
:
If set the lamps may shut down for no flow (see Section “Menu Settings”).
No Flow
Low IRR
Warning low IRR
Change the lamp(s)
