4.3 Hydraulic connections
D A N G E R
Chemical or biological hazards. If this instrument is used to monitor a treatment process
and/or chemical feed system for which there are regulatory limits and monitoring
requirements related to public health, public safety, food or beverage manufacture or
processing, it is the responsibility of the user of this instrument to know and abide by any
applicable regulation and to have sufficient and appropriate mechanisms in place for
compliance with applicable regulations in the event of malfunction of the instrument.
Sample
The sample enters the analyzer through a 12/14 mm hose (No. 15 in Figure 3 on page 9).
Flow rate should be between 40 and 300 liters/hour under a pressure of 0.5 to 6 bar.
Rinse water
The rinse water enters the analyzer through a 6/8 mm hose (No. 14 in Figure 3
on page 9). Water pressure must be between 1 and 6 bar.
Reagents
The reagent containers are connected to the pumps according to the instructions
corresponding to the application.
Drain
The analyzed sample is drained at atmospheric pressure through a 12 mm hose (No. 7 in
Figure 4 on page 10) delivered with the analyzer for initial startup. Make sure that no
backflow occurs in this tube or the other two drainage tubes (overflow No. 8 in Figure 4
on page 10 and siphon No. 5 in Figure 4 on page 10).
Note: With the cabinet model, all three tubes drain into a receptacle with a 50 mm outlet.
4.4 Compressed air connection
The analyzer requires dry and filtered compressed air at a pressure of 4 to 7 bar. It
should be supplied to the valve (No. 10 in Figure 3 on page 9) using a suitable plastic
tube of 4/6 mm diameter.
4.5 Electrical installation
D A N G E R
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
D A N G E R
Electrocution hazard. Always make sure the analyzer is turned off and power is disconnected
before making electrical connections.
D A N G E R
Electrocution hazard. Protective Earth Ground (PE) connection is required.
4.5.1 Wiring procedures and cable preparation
The following procedure must be followed for all cables connecting peripherals (e.g.
pumps, level detectors, alarms, etc.) with the electronic unit (No. 11 in Figure 3
on page 9). Some cables will be supplied ready for use. Other cables which are supplied
locally by the user must be prepared according to the procedure explained in Cable
preparation on page 13 before connecting to the electronic unit.
Installation
12
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