TMC Pro Pond UV110



isolate power. isolate water. Remove rubber connectors, remove lamp connectors (fig1)Slide out bulb. Unscrew compression connectors (figs 2&3) Remove seals (fig 4&5) and drain water from unit mine held about 7 litres. GENTLY slide out quartz tube (fig 6). Clean tube (i used vinegar and lemon juice) rinse well! refit quartz tube carefully, make sure you dont knock the far end as you guiding it it.. Vaseline seal and compression fitting (fig8) Refit seals and screw up compression fitting gently, no gorilla force required. Turn on water, Test for leaks I pushed a wad of kitchen towel through with a piece of 3/4 pipe(fig9) Refit Bulbs,refit connectors. Job done.