Hydrotech DLR-4M_7M Ultraviolet Water Disinfection Unit - Manual (Page 14)

O & M Manual DLR-M, 4-7
08/05 – Rev. 6 14
Maintenance,
Continued
Cleaning the
quartz sleeve,
headpiece, O-
Ring, & sensor
quartz The quartz sleeve must be kept clean to kill bacteria effectively. Your water
quality and mineral content will determine cleaning frequency. Perform a
visual inspection after thirty (30) days of operation. If the sleeve is dirty,
shorten cleaning intervals. If the sleeve is clean, lengthen cleaning intervals.
At this time, clean the headpiece, O-Ring, and sensor quartz assembly also.
Step Action
1 Fill bucket or other receptacle with warm, soapy water.
2 Follow Steps 1 through 5 for replacing the lamp (see previous page).
3 Unscrew the headpiece and carefully remove the quartz sleeve from the disinfection chamber.
IMPORTANT! The quartz sleeve may stick to the headpiece. Be sure to hold both pieces
carefully so they don’t separate during removal.
3 Take the headpiece and O-ring off the quartz sleeve. Clean the headpiece, O-Ring, and quartz
sleeve with a mild soap and hot water solution. If the sleeve is still not clean, use a mild acid
(citric acid or Lime-Away), then rinse with hot water.
4 Push the O-Ring a few inches down on the quartz sleeve and lower the sleeve into the
chamber.
5 Screw the headpiece onto the disinfection chamber to secure the quartz sleeve and O-Ring in
place.
6 Carefully reinstall the UV lamp and the Glo-Cap (see directions for installing the UV lamp).
7 Clean the sensor quartz (see directions in this section).
8 Restart your disinfection unit according to the start-up sequence for your model specifications.
9 Record the date in the maintenance log.
10 Sanitize your water system (see directions in this section).
HEADPIECE
O-RING
QUARTZ
SLEEVE
HEADPIECE
O-RING SEAT
QUARTZ
SEAT
QUARTZ SEEVE
HEADPIECE
O-RING