Barnstead|Thermolyne EASYpure D7421, Инструкция по установке, эксплуатации и сервисному обслуживанию

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from the feedwater. The "Replace
Prefilter" Indicator notifies you
when the prefilter requires chang-
ing. The frequency with which this
light will illuminate will vary depend-
ing on the feedwater free chlorine
level you have selected on the
switch panel on the inside rear left
side of the case. For proper opera-
tion and protection of your mem-
brane, it is important that you accu-
rately select your feedwater free
chlorine level on the switch panel.
4. Service membrane: If the percent
rejection rate of the membrane falls
below 65% the light will illuminate,
indicating membrane difficulty. In
most cases replacement of the
membranes is called for. Refer to
troubleshooting guide for further in-
formation. At times during operation
the light may illuminate. This may
be caused by feedwater variation or
extended periods of non-use. This
should correct itself within a short
time.
5. Replace membrane: Even under
optimal conditions, your EASYpure
RO reverse osmosis membranes
have a finite life span. This indica-
tor illuminates when your mem-
branes have reached the end of
their rated service life. Refer to
page 32 for the proper replacement
procedure.
O
PERATION