DI TANKS

DI tanks are used when the RO system
is down or

when the water produced from the RO
system is not

up to standards.

DI tanks do not remove bacteria or
endotoxins and

therefore must be followed by
endotoxin filters.

When DI tanks are hooked up there
are always two

tanks. The first tank is the worker
tank while the

second tank is the backup.

DI tanks do
not remove chlorine and must therefore always be used in conjunction with
functioning

carbon
tanks.

All DI
tanks should have a sticker with an install date on them. Tanks older than
three months

from the
install date have expired and should not be used.

When DI
tanks are hooked up there will be a light monitor between the first and
second tank. This

light
monitor measures water purity to make sure the water from the first tank is
safe for patient use.

There are
two types of lights used in the industry. One type uses a basic on/off system
while the

other uses
a red light/green light system. Be certain you know which system you have
when using

DI. The
on/off type will be on when the water from the first tank is good and off
when the water from

the
first tank is bad. The red/greenwill be green when the water from the first
tank is good and red

when the
water from the first tank is bad.

When
hooking up DI tanks for the first time the tanks must be flushed to drain for
10 minutes

before
allowing the water to go out to the treatment floor. Be sure to properly
follow DI hook up

procedures
as posted in your RO room. If you have questions or concerns, contact BEST.

When the
first tank becomes "exhausted" and the light registers that the
water is no longer good,

the second
tank will then become the worker. The first tank should then be exchanged at
the end

of the
treatment day. It is important that the primary (first) tank not be left
exhausted for more than

one day
because if the backup or secondary (second) tank becomes exhausted then the
water

from the DI
tanks will not be clean enough to run patients and all treatments will have
to halt.

When the
primary DI tank is exhausted, exchange it at the end of the day following the
procedure

posted in
your RO room. The secondary tank will become the primary and the new tank
will then

become
the secondary or backup tank. Be sure to flush the tanks to drain for 10
minutes prior to

allowing
the water out to the treatment floor.

Whenever a
clinic is on DI the DI Monitoring Log must be filled out at the beginning of
every patient

shift.

Once DI
tanks have been flush and/or used, they can no longer be stored to use again
another time.