Davey Aquashield MAX Packaged Ultra Violet Water Treatment System - Manual (Page 18)

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MAINTENANCE CONTINUED...
reverse procedure when replacing sleeve.
When replacing quartz sleeve after cleaning, the sleeve should stick out
about 1cm at each end. Place o-ring over closed nut end and fit closed nut,
fastening it hand tight. hold the other end of the sleeve in position during
the tightening with the other hand, then fit open end o-ring and cap.
a tiny amount of silicon spray or crc in the end of aluminium endcap
threads will aid easy tightening. Do not use excessive force when tightening
nuts. Do not re-use quartz sleeve or o-rings if damaged.
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 will disconnect power
from the pump preventing untreated water from being delivered. 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.
If alarm sounds when new lamp is inserted, turn power off for five minutes
to allow for internal reset of the power supply.