Operation
15
Over Temperature
- When the water temperature inside the UV reactor chamber exceeds the maximum rating for the UV
system (40 °C) the Controller will show “Ot” on the display. This is usually caused by extended periods of no water flow.
To clear this condition simply open a faucet and allow water to flow through the system.
Possible causes for low UV alarm conditions:
a.
The UV lamp has perhaps reached a level whereby it can no longer adequately provide a sufficient level of
performance due to age (> 9000 hours). The lamp should be replaced with a new lamp from the manufacturer of the
same size and type.
b.
The quartz sleeve and/or the sensor window have become stained or dirty. Mineral deposits or sediment in the water
that was not detected during the original water analysis may be the cause for this. Refer to
Section 4.2
.
c.
Intermittent voltage drop in the household controller reducing the lamp output. The lamp will return to normal when
the power is restored to full voltage.
Note:
The monitoring system will not operate during power failures.
d.
The quality of the influent water has changed and is no longer within the acceptable operational range of the UV
system. Perform a water analysis to determine the exact constituents and concentration levels.
e.
The UV sensor is not installed correctly.
5.2.2 Lamp Life Remaining (Days)
To obtain this reading, press the timer reset button a single time and follow the steps as outlined in
Section 5.1.3
,
regarding the operation of this feature.
5.2.3 Total Days of Operation
To obtain this reading, press the timer reset button two times in succession and follow steps as outline in
Section 5.1.3
, regarding the operation of this feature.
5.2.4 Lamp Failure (Blank Screen)
Refer to
Section 5.1.5
for explanation of this feature.
Note:
On the VIQUA systems, the audible tone provided for lamp failure is a continuous alarm, rather than the intermittent
(1 second on, 1 second off) condition on the basic VIQUA systems.
5.2.5 Solenoid Output
Working in conjunction with the UV intensity monitor, the VIQUA controller provides a powered (line voltage) IEC solenoid
output connector. (Note: this is not a dry contact) This solenoid output is protected with a replaceable 2 amp isolated fuse.
Connection from this output to the solenoid can be done using the IEC solenoid power cable PN 260135. When the UV
intensity monitor senses that the water is not adequately being treated and drops to 49% UV intensity or below, the internal
relay is opened thereby stopping AC power flowing to the normally closed solenoid valve. The valve will remain closed (no
power) until the UV level rises above 49%, at which time the solenoid will open, allowing for water to pass through. (To
