Davey UV40-20/UV75-25/UV130-40 Steriflo Ultra Violet Water Treatment Systems - Manual (Page 5)

8
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. Unplug lamp connector.
4. Remove lamp.
Reverse procedure when replacing lamp, ensuring that lamp is centrally located in
the chamber. Handle 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 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 oring, repeat with nut at other
end and remove oring, withdraw sleeve carefully.
4. Inspect orings 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.
5
Power Connection
Connect lead to power supply designated on control box label. Do not use long
extension leads as they cause substantial voltage drop and/or poor lamp
performance. Earth stainless steel chambers using bolt provided on the chamber
(see illustration below).
*Models SF800S, SF900S, SF940S, UV40-20 and UV75-25 use long endcap P/No. S168A,
SF1000S and UV130-40 use short endcap P/N S333A.
Electrical Power Surge Protection
An electrical power surge or spike can travel on the supply lines and cause serious
damage to your electrical equipment. The Steriflo
® control box has a 2 AMP fuse
to protect the circuit. The fuse is not a lightning arrestor and may not protect the
Steriflo
® if lightning or a very powerful surge hits the unit.
The Davey Steriflo ® control box has a red LED alarm indicator light
mounted on its front panel, adjacent to the amber “power on” LED.
This light will be illuminated whenever the Steriflo
® control box
senses lamp failure. There is also an audible alarm in the event of
lamp failure. The LED and/or alarm will only work when unit is
connected to the correct electrical supply.
Open Endcap and Lamp Details
M6 Nut
M6 Washer
Earth Lug
UV lamp "O" Ring S24x3N70
Endcap*
Quartz Sleeve
Earth Stud
B.S.P. Nipple
S114/2 Connector
M3 Screws
2 Off
S334A or S334C
End Washer
Cord Grip
Install the power supply enclosure above the treatment chamber
so that in the event of a leak, water cannot drip down the lamp
lead into the enclosure.
CAUTION: The supply cord is necessary for lamp changing. The
three pin supply plug must remain accessible after installation. If
installed to fixed wiring without the plug a two pole switch must be
fitted and its ON and OFF positions shall be marked.
WARNING: When servicing or attending your Steriflo ® , always
ensure power is switched off and lead unplugged. Electrical
connections should be serviced only by qualified persons. If the
electrical supply lead of this system is damaged, it must only be
replaced by authorised Davey service personnel as special tools
are required.