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 disinfection 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 page 8 for cleaning
instructions).
c) Intermittent voltage drop in the household power supply 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 (see page 9).
2. Lamp life remaining (days):
To obtain this reading, press the push-button SWITCH a single time and follow the
steps as outlined on page 10, regarding the operation of this feature.
3. Total days of operation:
To obtain this reading, press the push-button SWITCH two times in succession and
follow steps as outline on page 10, regarding the operation of this feature.
4. Lamp failure (blank screen):
Please refer to page 10 for explanation of this feature.
Note:
On the Cobalt “Plus” 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 Cobalt systems.
5. Solenoid Output:
Working in conjunction with the UV
intensity monitor, the Cobalt “plus”
controller provides a powered, male IEC,
solenoid (line voltage) connection (note:
this is NOT a dry contact). In addition, this
solenoid connection is protected with a
replaceable 2 amp isolated fuse. 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 temporarily defer the
operation of this solenoid output for up to 12 hours, please refer to the
instructions outlined on page 11 of this manual.
NOTE:
DURING ByPASS, THE “Do NoT CoNSUME THE WATER”
tag included with
this manual should be placed in a prominent location and the water should NOT be
consumed until the system has returned to a safe condition.
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