Lancaster 7-LWT-UV009 Installation, Operating And Service Manual page 9

Operating & Maintenance Instructions:
Caution: Prior to performing any work on the disinfection system, always disconnect the power
supply first.
UV LAMP REPLACEMENT:
1. To replace the lamp, there is NO need to disconnect the system from the water supply, nor to drain the water from
the UV chamber. DO NOT USE WATER DURING THIS PROCEDURE. Lamp replacement is a quick and simple
procedure requiring no special tools. The UV lamp must be replaced after 9,000 hours of continuous operation
(approximately one year) in order to ensure adequate disinfection.
2. Unplug the electronic ballast from the electrical outlet and allow the lamp to cool for at least 5 minutes before
removing. Pull out the U clip from the gland nut. Remove busing, connector and lamp from the UV chamber. Separate
the lamp from the connector. Do not twist the lamp from the connector, simply slide the two apart. Avoid touching
the lamp's quartz surface. Handing the lamp at the ceramic ends is acceptable, however if you must touch the lamp
quartz, please use gloves or a soft cloth. Fully remove the lamp from the reactor chamber being careful not to angle
the lamp as it is removed from the chamber. If the lamp is removed on an angle, pressure will be applied on the inside
of the quartz sleeve, causing the sleeve to fracture.
3. To install a new lamp, first remove the lamp from its protective packaging, again being careful not to touch the lamp's
quartz surface. Oil deposits from your fingers can create hot spots on the surface which may lead to premature
lamp failure. Handle the lamp by the ceramic ends only. If the quartz surface becomes dirty, use a lint-free cloth and
isopropyl alcohol to remove dirt. Carefully insert the lamp into the UV vessel (actually inside the quartz sleeve). Insert
the lamp fully into the chamber leaving about two inches of the lamp protruding from the chamber. Next, attach the
connector to the UV lamp. Ensure the connector is fully seated onto the UV lamp.
4. Once the lamp is fully seated on the connector, slide the connector and bushing into the aluminum gland nut. Gently
press down on the bushing and squeeze/slide the U clip through the gland nut's four upper holes (2 pair, 180° apart).
5. Plug in ballast to the electrical outlet.
NOTE: RESET LAMP LIFE TIMER AFTER LAMP REPLACEMENT (PG 9) - refer to www.lamprecycle.org for lamp
disposal
QUARTZ SLEEVE REPLACEMENT / CLEANING:
Mineral deposits and sediment may accumulate on the quartz sleeve decreasing the UV light transmittance and system
performance. Good maintenance of filtration equipment will reduce the accumulation of residues. If necessary, remove the
quartz sleeve and clean with a commercially available scale remover (CLR, Lime-Away, etc.) and a lint free cloth. Repeat
the process as often as necessary to keep the quartz sleeve clean. Be sure to remove all traces of cleaning fluid from the
sleeve before it is reinstalled in the UV chamber (be sure not to allow liquid inside the sleeve).
1. First remove the UV lamp by following steps 1 & 2 as outlined in the "Lamp Replacement" section above.
2. Shut off the upstream water supply that feeds water into the UV chamber.
3. Shut off the downstream water supply. If your system does not have a separate downstream valve, simply open a
downstream faucet to release any pressure that may be built-up in the system.
4. Remove the aluminum gland nut by turning counter clockwise. Place a small pail under the UV chamber to catch any
water that may leak from the system. Grasp the quartz sleeve and fully remove from the UV chamber. Make sure the
sealing o-ring is removed with the quartz sleeve. As with the lamp, make sure the sleeve is removed from the UV
chamber being careful not to angle the sleeve as it is removed from the chamber to avoid breakage.
5. Clean the sleeve as described above, or replace with a new sleeve. Reinstall the quartz sleeve in the reverse order.
To install the sleeve, carefully insert the sleeve into the UV chamber (do not drop) until the sleeve domed end seats
in the center of the hourglass retainer spring located in the end of the chamber. Install o-ring onto the sleeve until it is
positioned against the chamfered seat. Make sure the small lamp compression spring is inside the sleeve.
6. Reinstall the aluminum gland nut on the UV chamber and tighten by turning clockwise. The gland nut should be hand-
tightened only, the use of a wrench is not required, nor recommended. Reinstall the UV lamp and connector as
outlined in steps three and four of the "Lamp Replacement" section.
7. Slowly turn on water and pressurize the chamber to verify that there are no leaks.
8. Reconnect to power source and ensure that the UV lamp is operating by verifying ballast green LED indicator is on
and display is operational.
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