12
Water Quality
Where the water being pumped contains unusually high levels of dissolved solids
(hard water), iron, manganese or biological organisms, a deposit build up on the
quartz sleeve may occur over time. This will compromise the effectiveness of the
UV system and the sleeve should be cleaned as required to maintain it in a clean
condition. Discoloured water will reduce the effectiveness of the UV system and
filtration should be installed.
Lamp Alarm System
If the UV lamp is out due to a failure or bad connection the alarm buzzer will
sound and the red LED will light and the alarm contacts will changeover. These
are able to close a normally open solenoid valve. The alarm function can be
checked by switching the unit off, disconnecting the lamp and then switching the
unit back on.
The lamp should be replaced after a year’s running time. The alarm will beep
intermittently after the internal clock has measured this time as a reminder to
change the lamp. Pressing the recessed ‘reset’ button with a ballpoint pen will
silence it for 24 hours at a time to allow time for a new lamp to be obtained. Once
a new lamp is installed press the reset button for 5 seconds to start another year’s
timing. Do this whenever a new lamp is installed. The alarm light flashes slowly
during normal operation to show the timer circuit is running.
