Davey UV70 Steriflo UV, Ultra Violet Water Treatment Systems - Manual (Page 8)

8
Maintenance
Lamp changing (every year of operation) :
1. Shut valve(s) so that water cannot flow through steriliser.
2. Switch off steriliser and unplug from mains.
3. Undo lamp end cover plate screws.
4. Unplug lamp connector.
5. Remove old lamp and replace with new one.
6. Reconnect the lamp connector which is keyed for correct orientation.
7. Refasten the lamp cover plate with screws
8. Allow a one minute delay to reset the lamp ballast before reconnecting mains
power.
9. Reset the lamp timer by depressing the reset button until an audible “beep”
sounds indicating that the lamp timer has been reset for a further 12 months.
Handle lamp only by the ends.
Quartz Sleeve Cleaning (three monthly) :
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 methylated spirits (5% hydrochloric acid if heavily fouled) and carefully
dry. 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. Withdraw sleeve carefully. Take care to retain white pressure ring.
4. Inspect o-ring 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 replacing sleeve ensure domed end locates in
internal holder at the far end of the chamber.