Davey Aquashield Centurion 50W & 70W - Manual (Page 10)

10
After Sales Service
For professional after sales service or repair, contact your Davey Dealer.
Recommendations for maintaining good health
UV sterilising systems are designed to deactivate bacteria by rearranging the
bacterial DNA and removing the ability of the bacteria to reproduce.
UV treatment is most effective on clear, particle free water. Therefore we include
20um and 1um pre-filtration prior to the UV chamber. The filters should be checked,
cleaned and replaced regularly.
As the bacteria in the chamber require contact time with the lamp, water flow through
the unit should not exceed the maximum flow ability. If this is a risk, a flow limiting
valve could be added to the system. Please consult your plumber.
The UV system is only effective when the lamp has power. In the case of a power
failure, water should not be used through the system.
Over time the UV lamp output will be reduced. We recommend replacing the UV
lamp every 12 months so that your water is treated by high intensity UV. (Please see
page 7).
The internal quartz sleeve needs to be cleaned regularly so that grime on the sleeve
does not block the UV lamp. This should be done at least 4 times per year and more
often if your water is prone to scaling. (Please see page 6).