How to replace the UV Lamp and clean Quartz Dome:
1. Unplug UV unit from electrical outlet and turn off supply valve before the unit. Open a faucet to depressurize
the UV system and turn off the valve at the UV outlet to isolate UV unit. CAUTION: The lamp end can be very
hot. Wait several minutes for the lamp to cool down.
2. Unscrew the ground nut and remove the ground wire (green wire with yellow stripes).
3. Loosen the black screw on the lamp connector cover and remove cover from the gland nut.
4. Carefully slide UV lamp slightly out of chamber and hold the lamp end with one hand. Gently pull off the
connector with your other hand to disconnect the lamp completely. Slowly remove lamp from the
disinfection chamber completely.
5. Remove the quartz dome by loosening the gland nut and carefully extracting from the unit. Remove dome
absolutely vertically from its position until the other end comes out. CAUTION: If you bend the dome mid-
way, it can break easily and pieces of quartz can fall into the UV chamber. Do not lose the spring.
6. Remove & discard used dome "O" ring. Clean dome gently with a vinegar solution or a household scale-
removal product. Do not use abrasive pads. A soft cloth or paper towel is recommended.
7. Using a small pointed tool carefully take the gland-nut "O" ring out of the gland nut. Take care not to scratch
the gland nut.
8. A dome "O" ring (thicker) and gland nut "O" ring (thinner) are
included with the replacement lamp. Slide gland nut "O" ring
into the internal groove of the gland nut.
9. Follow instructions 7 to 15 in previous section “Installing the
UV Unit”. Do not plug in ballast yet
10. Depress timer button while reconnecting ballast to electrical
outlet and keep the button depressed until the ballast emits a
solid three-second beep. This will re-set the lamp-change-timer to zero and the 3-second beep will confirm
that the re-set was successful
(H) TROUBLESHOOTING
General Ballast Alarm Conditions
Ballast has received power
which is outside the operating
limits
Unplug ballast from power source. Wait
for 15 seconds and plug back in. Normal
operation should begin
Lamp is nearing end of life and is
now in grace-period of 28 days
Press re-set button to silence alarm for 7
days. Replace lamp as soon as possible
Intermittent or
long beep
Caused by catastrophic failure of
ballast either due to power
surge or water leak
Unplug ballast from power source. Wait
for 15 seconds and plug back in. If normal
ballast function of ballast is not resumed,
replace ballast
Gland nut is loose or O-ring defective
Hand-tighten gland nut & replace O-ring(s)
Condensation outside
the UV chamber
High humidity in the environment
This is normal if humid conditions exist. Install dehumidifier to
protect ballast. Protect flooring below UV
Hot water coming out of
taps/faucets
Water inside UV unit becomes hot
after long periods of non-use. You may
have oversized the unit for the home
To prevent scalding, before using water after periods of non-
use such as overnight, flush water for about 2 minutes. Install
a temperature controlled purge valve on the UV outlet
UV lamp ends seem
burnt after some time
As long as the UV lamp lights, a little burn mark at the ends is
normal and there is no need to replace the UV lamp
Keep Timer Button pressed while connecting
ballast to AC power. Hold until 3 sec beep
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