![Sita IT Series Manual Of Installation, Use And Servicing Download Page 36](http://html.mh-extra.com/html/sita/it-series/it-series_manual-of-installation-use-and-servicing_1285532036.webp)
35
✓
Lamp Burned
✓
Ballast Burned
✓
Change the lamp
✓
Change the ballast
✓
Deposit on quartz sleeves lamp protection
✓
Variation on UV transmittance of the water
✓
Decrease of the UV-C output in lamp(s) due
to the lamp ageing
✓
Deposit on quartz of the UV sensor
✓
Clean the quartz sleeve
✓
Filter the water
✓
Change the lamps
✓
Clean the sensor
✓
Deposit on quartz sleeves lamp protection
✓
Variation on UV transmittance of the water
✓
Decrease of the UV-C output in lamp(s) due
to the lamp ageing
✓
Deposit on quartz of the UV sensor
✓
Clean the quartz sleeve
✓
Filter the water
✓
Change the lamps
✓
Clean the sensor
8.9.
List of alarms and troubleshooting
Each alarm activates the main relay (dry contact and 24 Vdc output). The message ALARM! on the
Main Screen starts flashing. Press “ALARMS” on the screen to visualize the alarms. The screen lists all
the possible alarms and shows the status of lights:
LAMP FAULT
→ Each lamp of the UV system is identified with a number.
This message is visualized the lamp cable number is not working.
LAMP OFF
→ Each lamp of the UV system is identified with a number.
This message is visualized the lamp cable number is not working.
Possible Causes:
Solutions:
Replace and connect the lamps only in the context switched off, wait 20 seconds before you restore
power to allow the reset lighter. Otherwise, the igniter is not reset and the new lamp is not recognized.
LOW DOSE
→ It’s visualized in case the UV Irradiance (or Dose) is under the threshold level.
Possible Causes:
Solutions:
PREALARM LOW DOSE
→ It’s visualized in case the UV Dose is under the threshold level
Possible Causes:
Solutions:
Important
!
On
→
alarm active
Off
→
alarm disactive
Push to access to
Lamp Status Screen