© 2015 Delta Ultraviolet Corporation All Rights Reserved Rev 01/16 P/N 94-35234 Page 14
Disconnect
Power:
Unplug the DELTA UV unit from its power receptacle
1. Stop Your Circulation Pump: You must shut off the circulation pump so that
no water is flowing into the DELTA UV unit. Once the pump is shut off if you feel that
there is no pressure present inside the DELTA UV unit, simply unscrew the top union
nut on the DELTA UV unit. This will relieve any pressure. When you are absolutely sure
that there remains no pressure inside the DELTA UV wet chamber, you can proceed to the
next step.
2. Allow the ultraviolet lamp to cool for at least 30 minutes before handling
3. Remove the plastic electrical enclosure bonnet by unscrewing the mounting screw.
4. 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/ gray ceramic prong
end).Check that bulb cushion and O-rings (between the lamp and the quartz tube) are still on bulb.
Carefully place the removed bulb in a safe location while cleaning the quartz TUBE
5. Remove The Acorn Nut: Unscrew acorn nut by hand, if needed use a crescent wrench or 1-11/16"
socket, remove the black plastic acorn nut (Part # 86-02417) holding the quartz tube into the black
plastic mounting gland. Note that there is a rubber sealing gasket (Part # 44-02018) around the quartz
tube (or inside the acorn nut) that seals the quartz tube to the mounting gland. Set the gasket aside to
reseal the quartz tube when you reinstall the quartz tube after cleaning.
6. Grasp the quartz tube and pull straight up. Inspect Quartz Tube: If cracks in the quartz tube are
found, the tube should be replaced. Broken quartz tubes will allow water to enter the dry electrical
chamber and attack the electrical components of the unit, which will cause them to fail and need to be
replaced. BROKEN QUARTZ TUBES, OR WATER DAMAGE CAUSED BY BROKEN QUARTZ
TUBES, ARE NOT COVERED UNDER YOUR LIMITED WARRANTY
7. The quartz tube exterior can normally be cleaned by using acid or spirit vinegar or Muriatic
Acid (liquid) with weak concentration. (ratio of 4 parts water to one part acid)
CAUTION: Follow the directions for use and handling of Muriatic Acid on the acid bottle label,
being careful to protect your eyes, wear rubber gloves, and avoid breathing fumes
Do not use abrasive cleaners. Change the quartz tube if necessary.
8. Seat the quartz tube DELICATELY into the receptor at the bottom of the wet chamber
(Without dropping it).
The quartz tube will not go all the way down into the wet chamber
,
approx.
1”
will be showing after the rounded end of the quartz tube is seated in the
receptor at the
bottom of the wet chamber. Take a new sealing gasket (angled seal). (Put a new sealing gasket
every lamp change) Place it on the end of quartz tube (angle downwards).
To Next Page
Loading...
