Arena Service Manual
There are connections for three different acid concentrates and one
bicarbonate concentrate from the central delivery supply system to
the back of the Instrument. These go through the Instrument and
directly connect to the supply fittings on the front of the
Instrument as shown in Figure 7-9.
In addition to the "A" and "B" concentrate connectors used to
connect to concentrate jugs, there are also central concentrate
supply fittings are located on the front of the Instrument as shown
in Figure 7-9. If concentrate from a central delivery system is
used, the concentrate lines are moved to the acid and/or bicarb
supply fittings as appropriate.
Figure 7-9. Central Supply Fittings on the Instrument
System notes:
•
•
•
Install a shut-off valve between the concentrate supply and
each concentrate connector.
After installation, the regulator function may be verified by
alternately drawing concentrate through the regulator and from
a container of the same concentrate (same manufacturer, not
just the same formulation) and comparing the resulting
conductivities.
The Instrument concentrate line may be lengthened up to 10
feet (3 m). The extended line segment must be connected
between the concentrate line filter and the concentrate line
fitting (pink or blue). The extended line segment should be the
7-18 157-1278-914 Rev A
January 2004
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