Uv Lamp Replacement - Thermo Scientific EASYpure 1164 Series Operation Manual And Parts List

M S
AINTENANCE AND
Note
Some water will drain from the ultrafil-
ter when you disconnect it. Have a
container ready to hold the ultrafilter
and catch the water while it drains.
Water will also drain from the tubing of
the EASYpure UV/UF onto your bench
or floor. To avoid slipping and falling,
clean up all spills.
Warning
Depressurize system prior to opening
cartridge access door.
Warning
This unit is equipped with an ultraviolet
lamp. Ultraviolet radiation is harmful to
the eyes and skin. Do not attempt to
observe the lamp directly.
Note
The UV Solid State Ballast in the
EASYpure UV/UF cabinet has a green
light that will be lit if the lamp is illumi-
nated. Also, an audible sound will alert
you if the lamp is not lit or is
disconnected.
24
ERVICING
2. Depressurize the system by opening the draw-off
valve, allowing water to drain until no more water
flows from the valve.
3. Follow the instructions for ultrafilter installation
found under Ultrafilter Installation, removing the old
ultrafilter tubing.
4. Sanitize the EASYpure UV/UF according to the
instructions on page 22.

UV Lamp Replacement

The ultraviolet lamp requires changing every 90-120 days.
Lamp life will vary according to the number of times the
EASYpure UV/UF unit is turned on and off ( the
START/STOP mode). This estimated lamp life is based on
the EASYpure UV/UF being operated in the RUN mode
during normal working hours (assumed to be 9 hours/day,
5 days/week) and then placed in the STANDBY mode dur-
ing off hours (15 hours/day), weekends and holidays. Since
the lamp turns on 10 minutes/hour during the STANDBY
mode, this amounts to 15 START/STOP cycles per working
day. If the EASYpure UV/UF is cycled between the RUN
and STANDBY modes during the work day, this will result
in a shorter lamp life. Therefore, it is recommended that the
EASYpure UV/UF be left in the RUN position during normal
working hours. Leaving the unit in the STOP mode at night
and on weekends will lengthen UV bulb life but will com-
promise water quality. Higher rates of bacterial growth, as
well as ionic and organic purity degradation, will occur,
necessitating the EASYpure UV/UF be placed in a recircu-
lating mode for up to one hour to achieve organic content
of 2 ppb TOC.
To replace the ultraviolet lamp:
1. Turn off the EASYpure UV/UF and disconnect it
from the power supply. Remove the power cord
and the pump protector or interlock plug from
the rear or the unit.
Depressurize the system by opening the
2.
draw-off valve, allowing water to drain until
no more flows from the valve.