Connecting The Flowcell; Checking Sample Flow - ABB 9438 User Manual

4.2 Connecting the Flowcell – Fig. 4.2
Push the sensor connector on
firmly and tighten ONE TURN
clockwise.
4.3 Checking Sample Flow – Fig. 4.3
Check that the sample flows correctly in
both normal operation and during a
calibration or thermal overload.
To simulate a calibration manually, open the
valve – see Section 6.2.1 Operating Page
Carefully remove the dissolved oxygen
sensor and check that the flowcell is empty.
If sample still flows, check that the
installation complies with Section 2.3.3.
Fig. 4.2 Electrical Connections at the Flowcell
Flow during normal
operation
Flow Indicator
Sensor
Flow
Regulating
Valve
Line up the red spots and
push the plug on firmly until
the locking ring engages.
Note.
• The plug is a latching type to prevent it's
accidental removal. To remove, hold the
plug at its widest point and pull out.
• The plug is protected against spillage
and corrosion by a sleeve which slides
over it.
Flow during calibration or
thermal overload condition
Drain
Sample
In
Solenoid
Operated
Valve – Closed
Fig. 4.3 Sample Flow Schematic
4 SETTING UP
Sample
In
Solenoid
Operated
Valve – Open
Drain
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