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US Water UV Light Installation Instructions
Installation, Operation and Maintenance Manual
385-GWU-1000, 385-GWU-1500, 385-GWU-2000
Figure 5. UV Sensor Installation
Figure 6. IEP Connection
Step 12:
The reactor i s now read y for w ater flow . When all plumbing connections hav e been
completed you should check for any possible leaks. Slowly turn on the water supply and check for leaks.
Make sure the by-pass valves are functioning properly and that the water is flowing through the reactor.
The most common leak is from the o-ring not making a proper seal on the reactor. If this is the case turn
the water off, drain the reactor, remove the o-ring, dry it and reapply silicon grease. Replace o-ring en-
suring that it is properly sealed against the reactor and check again for leaks.
Step 13:
The controller can now be mounted on the wall. The controller should always be above
or beside the reactor to ensure that no moisture can deposit on any of the connections (see Figure 2.). Al-
ways mount the controller vertically. For safety purposes the controller should be connected to a ground
fault circuit interrupter (GFCI) (also known as a ground fault interrupter (GFI)).
Step 14:
You can now remove the UV lamp from its packaging being careful not to touch the lamp
quartz with your hands. Again, the use of cotton gloves is recommended to avoid deposited oils on the
lamp glass. Always hold the lamp by the ceramic ends. With the lamp outside of the reactor, affix the UV
lamp to the lamp connector as shown in Figure 7.
