Davey UV70 Steriflo UV, Ultra Violet Water Treatment Systems - Manual (Page 6)

6
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 1 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.
If the installation is subject to electrical power surges or lightning we strongly
recommend the use of suitable additional surge protection devices on ALL
electrical equipment.
We recommend the use of an RCD or earth leakage circuit breaker on the
power supply to your unit.
Pipe Connections
Never use PVC pipe directly connected to unit. PVC pipe and fittings can be used
after 90 o metal elbows are connected to the inlet and outlet of the chamber eg.
brass fittings. Larger diameter pipe may be used to minimise resistance to flow,
but maximum flow rates should not be exceeded, as correct water treatment
cannot be assured at higher flows. If flows may exceed the design maximum,
install a flow restriction device.
Use unions at pipe connections to enable easy removal and servicing. Use
sufficient tape to ensure airtight seal and do not over tighten. To prevent strain on
unit threads always support heavy inlet and outlet pipes.
Pre-treatment (drinking water)
Prefiltration is usually required to ensure that particulate matter does not shield
micro-organisms from the UV light. Sand filtration or 20 micron cartridge filtration
is the usual minimum. To protect against cysts such as Giardia or
Cryptosporidium, secondary depth cartridge filtration is recommended - a least 5
micron, but preferably 1 micron. Whole supply of depth cartridge filtration is
recommended however is some cases installing on the drinking supply may only
be practical.
Do not use pipe thread sealing compounds (especially hemp) on
any part of this unit. ONLY use Teflon sealing tape.
NOTE: Prior to installation remove the transport plugs from the
inlet, outlet and lamp end cap.
DO NOT DISASSEMBLE ANY COMPONENTS UNTIL YOU HAVE
FULLY READ THESE INSTRUCTIONS!
Ultra violet radiation is harmful to skin & eyes.
DO NOT LOOK AT UV LAMP WHILE LAMP IS OPERATING.