Davey Aquashield MAX Packaged Ultra Violet Water Treatment System - Manual (Page 17)

17
MAINTENANCE
Lamp changing (every year of operation) :
1. Shut valve(s) so that water cannot flow through steriliser.
2. switch off steriliser by unplugging mains.
3. undo end cover screws.
4. unplug lamp connector.
5. remove lamp.
reverse procedure when replacing lamp, ensuring that lamp is centrally
located in the chamber. handle only by the ends.
Quartz Sleeve Cleaning :
If dirt is allowed to build up on the quartz sleeve it will impair the UV output.
The quartz sleeve should be removed after one month and inspected for
deposits. clean with calcium lime and rust remover (clr). apply some
CLR to a soft cloth and wipe the quartz sleeve. Once clean, wipe any
residual clr off with a wet soft cloth. handle the sleeve with tissue to keep
it clean. the sleeve should be cleaned every three months or as required.
Sleeve removal (use care-fragile) :
1. remove lamp as described.
2. remove drain port cap and empty water from chamber.
3. undo nut at one end of the chamber and remove o-ring, repeat with nut
at other end and remove o-ring, withdraw sleeve carefully.
4. Inspect o-rings for damage, replace annually.
CAUTION: Handling lamp and quartz sleeve. Keep the quartz components
free of finger marks to avoid loss of output through dirt or grease shadows
- handle the lamps by their ends where possible. Wipe lamp and sleeve with
clean cloth or tissue if needed. The o-rings should be replaced annually or if
damaged – do not grease the o-rings.
NOTE: When withdrawing sleeve take care not to let the end drop into the
chamber as it could break - a clean dowel inserted right through the sleeve to
support it is useful.