Hydrotech DLR-AP Ultraviolet Water Disinfection Unit - Manual (Page 16)

Maintenance,
Continued
Replacing the
O-Ring General maintenance for the O-Ring requires that you replace it every 365 days. If,
however, during routine cleaning of the quartz sleeve, you find the O-Ring cut,
damaged, or extremely dirty, then it should be replaced at this time. To replace the
O-Ring, follow the directions for cleaning.
Sanitizing the
system Before initial use of your UV unit and after routine maintenance procedures, you
should sanitize your water system to ensure that no organisms are present.
Step Action
1 Pour household bleach into your water system. If you have a filter container, fill it
with bleach. If you have no filters then introduce chlorine directly into your well.
The amount of chlorine depends upon the diameter and depth of your well.
(Generally, use ½ gallon to treat an 8” diameter/80’ deep well and one gallon for
anything larger.) You may contact your State Extension Service or a water
treatment specialist for additional information.
2 Open hot and cold water taps throughout the house and let the water run until you
detect a chlorine odor. To ensure that the hot water heater is also purged, allow
the hot water to run until the water becomes cold.
3 Turn off the taps and allow the water to stay in the pipeline for about six hours or
overnight but not more than 36 hours to avoid corrosion.
4 Open hot and cold water taps throughout the house and let the water run until the
chlorine odor disappears.
16