8
6D. Quartz Tube Removal and Cleaning
CAUTION
Wear proper eye and skin protection for servicing
glass components.
NOTICE
Damage caused by broken quartz tubes is not covered
under the DEL UV Spa Limited Warranty.
CAUTION
If broken glass is trapped in the spa system, do not
operate the spa. Contact a service professional to have the glass
removed.
i. Make sure the spa is shut down and the system has cooled
before performing maintenance on the quartz tube. If you
have installed isolation valves, close them before servicing.
If you do not have isolation valves, the spa must be drained
below where the DEL UV Spa is mounted.
ii. Remove the enclosure cover and UV lamp as described in
Section 6A and set aside.
iii. Remove the two retainer screws and retainer washer from the
top of the lamp retainer and pull the lamp retainer out of the
UV chamber cap.
NOTICE
Any water remaining in the system above the level of the
DEL UV Spa will flow out of the UV housing once the lamp retainer is
removed.
iv. Grasp the inside of the quartz tube and pull it out of the
housing. Make sure the sealing ring does not get lost during
quartz tube removal.
v. Inspect the quartz tube for cracks and replace if cracks are
found. Inspect the sealing ring for nicks or hardness and
replace if necessary.
vi. Clean the quartz tube exterior with a mild solution of muriatic
acid and water in a ratio of four parts water to one part acid
(4:1). DO NOT USE ABRASIVE CLEANERS.
CAUTION
Follow the directions for safe use and handling of
muriatic acid on the acid bottle label. When mixing, always add acid
to container first, then add water.
SECTION 2 Maintenance Instructions
