INST
ALLA
TIO
N
OVERVIE
W
WARRANT
Y
MAINTENANC
E
OPERA
TIO
N
In some cases, short-term flows of low ultraviolet transmittance (UVT) water can be created following
and during the regeneration cycle of a water softener, resulting in a sensor alarm. Flushing the UV system
alleviates this condition until the softener goes through another regeneration cycle. In the longer term, the
softener's settings must be modified. To flush the UV system, first turn the solenoid valve bypass switch (if
equipped) counter-clockwise to override the shut-off, then open a tap downstream and let water run for
two (2) minutes. Disinfect the water lines following the procedures outlined under "
Disinfecting The Water
Lines
" in the Installation section.
Pro and Plus Series are equipped with a unique, patented sensor that is capable of self-diagnosis. Simply
press the button located at the top of the sensor and hold until the audible alarm stops (usually about 5
seconds). If the audible alarm is still present after 30 seconds, release the button and replace the sensor.
Refer to
Sleeve Cleaning And Lamp Replacement
section of the Owner's Manual.
Contact Trojan or your water treatment dealer for a test of the UVT of the water.
1�
2�
3�
4�
LOW UV ALARMS (Pro & Plus Series Only)
Sensor test
2
Low UV Alarm
Clean sleeve & sensor
3
Audible alarm
Audible alarm
Problem is
corrected
No audible alarm
No audible alarm
Check UVT
4
Contact Trojan
UVT above 75%
UVT below
recommended
level
Replace sensor
Increase UVT using
pretreatment
Sensor is
operating
normally
Flush system
1
Audible alarm
Problem is
corrected
No audible alarm
16
