F. UV LAMP REPLACEMENT & QUARTZ TUBE MAINTENANCE
The High Output UV bulb in your DELTA UV unit is a useful life of approximately 13 000 hours of operation (except in the case of
repeated lightings where its lifespan could be lower).
The replacement of lamp after 13 000 hours is obligatory.
The quartz tube should be removed, inspected and cleaned from the sanitizer every year and at each replacement of lamp.
Reminder: Do not touch the UV bulb glass with your bare hands.
That can shorten its life. Grasp the bulb on the white ceramic prong end or use a soft clean cotton cloth or clean
cotton gloves to handle the UV bulb. (If you have touched the bulb with your bare hands, you must wipe the bulb
glass off with spirit vinegar using a clean soft cotton cloth)
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Remove the plastic electrical enclosure bonnet by unscrewing the four mounting screws.
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Remove and throw the transport joints (between the lamp and the quartz tube) if they are still present
Carefully place the removed bulb in a safe location while cleaning the quartz tube.
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The quartz tube exterior can normally be cleaned by using acid or spirit vinegar or
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Reinstall the plastic electrical enclosure bonnet by screwing the 4 mounting screws
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Verify that the bulb is lit by viewing the glow of the bulb through the clear plastic union.
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Allow the ultraviolet lamp to cool for at least 30 minutes before handling.
Unplug the UV lamp by grasping the 4-pin connector
(attached to the ballast wires).
SLOWLY pull the UV lamp out of the quartz tube
(by grasping the bulb on the white ceramic prong end).
Unscrew the black plastic mounting gland.
Grasp the quartz tube and pull straight up.
Remove the sealing gasket (lip seal).
Carefully inspect the cleaned quartz tube for cracks.
pH minus (liquid) with weak concentration. (ratio of 4 parts water to one part acid)
Do not use abrasive cleaners.
Change the quartz tube if necessary.
Seat the quartz tube DELICATELY into the receptor up to backstop
(Put a new sealing gasket at each change of lamp)
Place it on the end of quartz tube (lip downwards).
Install and tighten the black plastic mounting gland. Do not overtighten.
SLOWLY lower the bulb down into the quartz tube.
Without forcing, plug the UV lamp to 4 pin connector (attached to the ballast wires).
Power up the filtration.
STOP THE FILTRATION.
BLEED the DELTA UV unit.
(without dropping it).
Take a new sealing gasket (lip seal).
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