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Old 01-04-2005, 12:08 PM   #1
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Changing UV sterilizer bulbs

I have a 15w "Aqua" UV Sterilizer. Essentially it looks like a big PVC tube with some fittings. How do I go about replacing the bulb in this unit? Do I have to shut down the pump and disconnect the UV from the line or can I just pull the bulb out while water is being pumped through it normally?

How often do you change your UV bulbs?
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125 SW
80 lb LR
330w PC
Euphyllia, Alveopora, Pachyclauvularia (Metallic Green and Daisy), Frogspawn, Torch, Gold Nepthea, Kenya Tree, Galaxea, Pulsing Xenia, various leather (umbrella, toadstool, fingers, devil fingers, lettuce)
Maroon Clown/White tip LT anemone, Powder Blue Tang, Female Swallow Angel, SixLine Wrasse, Solar Fairy Wrasse, Firefish, Fathead Anthias, Blue Mandarin, 3 Chromis, 3 Green Gobies
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Old 01-04-2005, 12:14 PM   #2
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UV bulbs should be changed every 9-12 months. I have no experence with that exact unit so I cant give you specific info on how to change that units bulb but its good general practice to make sure the bulb is off before you take it out to change it.
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Old 01-04-2005, 12:27 PM   #3
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Generally, can you pull the bulb out with your system running normally or should I shut the pumps down?
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We'll be fighting in the streets with our children at our feet, and the morals that they worshipped will be gone.

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125 SW
80 lb LR
330w PC
Euphyllia, Alveopora, Pachyclauvularia (Metallic Green and Daisy), Frogspawn, Torch, Gold Nepthea, Kenya Tree, Galaxea, Pulsing Xenia, various leather (umbrella, toadstool, fingers, devil fingers, lettuce)
Maroon Clown/White tip LT anemone, Powder Blue Tang, Female Swallow Angel, SixLine Wrasse, Solar Fairy Wrasse, Firefish, Fathead Anthias, Blue Mandarin, 3 Chromis, 3 Green Gobies
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Old 01-04-2005, 12:30 PM   #4
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I would shut down the pump going to the UV unit at a minimum. Just incase the hoses spring a leak while your working on the bulb change. On a UV unit I had (totally different make/model) I had to disconnect the supply and return lines from the UV unit because they connected to the twist on top that had to be removed to take the bulb out.
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Old 01-04-2005, 12:33 PM   #5
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Hmmm, cool. Thanks for the info, ff.
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125 SW
80 lb LR
330w PC
Euphyllia, Alveopora, Pachyclauvularia (Metallic Green and Daisy), Frogspawn, Torch, Gold Nepthea, Kenya Tree, Galaxea, Pulsing Xenia, various leather (umbrella, toadstool, fingers, devil fingers, lettuce)
Maroon Clown/White tip LT anemone, Powder Blue Tang, Female Swallow Angel, SixLine Wrasse, Solar Fairy Wrasse, Firefish, Fathead Anthias, Blue Mandarin, 3 Chromis, 3 Green Gobies
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Old 01-04-2005, 03:38 PM   #6
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If I were to change my bulb, I would simply disconnect its power, lay the unit on its side (be careful with tubing, and you might as well keep your pumps on as there will still be water in them regardless.. what's a small or large mess is still a mess), unscrew all four screws (two on top, two on bottom), pull caps off, pop the rotating connector piece off the top end and pull the bulb out. Do not touch the new bulb with anything except the little black piece that is on your old bulb. Slide the new bulb in, pop the bottom electrical connector on, screw the bottom cap on, pop the top electrical connector. Leaving the top cap off, plug the power back on, turn all your lights off, and turn the unit on. If it glows slightly, screw your cap on with it still on so you can make sure your connections stay. Then I set the unit up vertically to run properly. (In-hose on bottom, out-hose on top).

Again, this is just how mine is setup. Your's may be completely different.
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Old 01-04-2005, 04:08 PM   #7
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Cool, thanks schoe.

I guess the easiest way to ask is:

Can I replace the bulb with water flowing through the unit normally, or will unscrewing the bulb cause water to spray or be pumped everywhere?

Is the bulb self-contained outside the flow of water?
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We'll be fighting in the streets with our children at our feet, and the morals that they worshipped will be gone.

And the men who spurred us on sit in judgment of all wrong, they decide and the shotgun sings the song.



125 SW
80 lb LR
330w PC
Euphyllia, Alveopora, Pachyclauvularia (Metallic Green and Daisy), Frogspawn, Torch, Gold Nepthea, Kenya Tree, Galaxea, Pulsing Xenia, various leather (umbrella, toadstool, fingers, devil fingers, lettuce)
Maroon Clown/White tip LT anemone, Powder Blue Tang, Female Swallow Angel, SixLine Wrasse, Solar Fairy Wrasse, Firefish, Fathead Anthias, Blue Mandarin, 3 Chromis, 3 Green Gobies
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Old 01-07-2005, 06:32 PM   #8
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The bulb is self-contained. As I mentioned above, I left my flow running. No water actually "touches" the bulb. The radiation produced from the bulb streams through the quartz tube that the water flows through, spiriling around the center collumn.
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Old 01-07-2005, 06:37 PM   #9
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Excellent (ala Mr. Burns). This will make chaning it considerably easier.
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We'll be fighting in the streets with our children at our feet, and the morals that they worshipped will be gone.

And the men who spurred us on sit in judgment of all wrong, they decide and the shotgun sings the song.



125 SW
80 lb LR
330w PC
Euphyllia, Alveopora, Pachyclauvularia (Metallic Green and Daisy), Frogspawn, Torch, Gold Nepthea, Kenya Tree, Galaxea, Pulsing Xenia, various leather (umbrella, toadstool, fingers, devil fingers, lettuce)
Maroon Clown/White tip LT anemone, Powder Blue Tang, Female Swallow Angel, SixLine Wrasse, Solar Fairy Wrasse, Firefish, Fathead Anthias, Blue Mandarin, 3 Chromis, 3 Green Gobies
Clown Monarch is offline   Reply With Quote
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