15
10. Replace the head clamp around the flared end of the head and chamber. Install the 1/4” nut and tighten, using a 7/16” wrench,
until approximately 3/4” to 7/8” of the bolt protrudes past the nut.
11. Center the quartz sleeve in the chamber, making sure the quartz sleeve protrudes an equal distance past each threaded gland
fitting, of the chamber.
12. Re-install O-Rings, Teflon
®
washers, and static gland nuts. Be sure O-Rings are placed on quartz sleeve before Teflon
®
washer. Tighten static gland nuts firmly by hand only,
DO NOT USE HAND TOOLS
. Tightening with hand tools is likely to
cause quartz sleeve to break.
13. Re-assemble ballast housing to purifier chamber, using hardware removed in Step 1.
NOTE:
When re-assembling ballast
housing to purifier chamber, electrical power cord should exit ballast housing from the end mounted opposite the drain plug.
14. When all connections are complete, allow water to enter the water purifier at a low flow rate until the purifier is pressurized.
With the purifier pressurized, it should be checked for leaks.
15. See “
Lamp Installation or Replacement
” section on
page 11
to properly re-install the lamp into the water purifie
r.
o
Ptional
g
uarDian
tm
u
ltraviolet
m
onitor
s
ensor
P
roBe
C
leaning
Figure 9 - Ultraviolet Monitor and Sensor Probe
Figure 10 - Sensor Probe
If after cleaning the quartz sleeve, there is no significant improvement in the ultraviolet intensity, as shown on the intensity meter,
it may be necessary to clean the Ultraviolet Monitor’s sensor probe. The sensor probe body mounts in a fitting, located in the
center of the disinfection chamber, and protrudes into the chamber.
1.
Disconnect power to water purifier.
2. Shut off water supply to the water purifier via the inlet and outlet shut off valves. Remove drain plug and drain the chamber.
Once the chamber is drained, remove any old sealing tape from the threads of the drain plug, rewrap with 1/2” wide Teflon
®
thread sealing tape, reinstall and tighten the drain plug.
3. Disconnect power to the Ultraviolet Monitor; remove from chamber by loosening the two set screws on the aluminum collar
and lifting it free from probe body.
4. Unscrew the sensor probe and remove from the chamber.
5. Remove the quartz rod sensor probe cap, from the probe body. Take care not to damage the quartz rod, O-Ring or the threads
of the probe body.
NOTE:
It is recommended, when servicing the sensor probe, to work in a clean, dry area.
6. Once the quartz rod is removed, clean with alcohol or a mild detergent, and rinse with clean water. Stubborn stains usually
can be removed with a dilute hydrochloric acid.
NOTE:
Follow all manufacturer’s instructions and precautions when
handling chemicals. Once the quartz rod has been cleaned, handle the rod by the sides, to avoid getting fingerprints on the
quartz rod faces.
7. Clean the probe body, by removing any dirt or deposits on all surfaces. O-Rings should be inspected and can be replaced if
worn or damaged.
8. Reassemble, replacing the O-Rings, quartz rod and securing in place with the quartz rod sensor probe cap. Tighten the quartz
rod sensor probe cap by hand only,
DO NOT USE HAND TOOLS
. Tightening with hand tools may damage the quartz rod
or O-Ring seal.
9. Reinstall sensor probe into the center fitting of the chamber and hand tighten.
(Continued on Page 16)
