Set to MANUAL to disable the automatic pump control. AUTO
allows the flow PID to modify the pump coarse and fine settings.
START will transition to AUTO after one second.
Internal pump speed control (Coarse). This field is only editable
when the Pump Control field is set to MANUAL.
Internal Pump speed control (Fine). This field is only editable
when the Pump Control field is set to MANUAL.
3.4.18 Valve Menu
Figure 47 – Valve Menu Screen
Main Menu → Service Menu → Diagnostics Menu → Valve Menu
The Valve Menu allows the user to observe the instrument controlled switching of the valves. If the
valve is On it means the valve is energised. When a three way valve is in the On state it will now be in
the NC (normally closed) position as shown in the plumbing schematic. When the valve sequencing is
disabled the user has the ability to turn the valve Off and On manually. It is recommended that the
valve menu be used by a trained technician following the plumbing schematic (refer to Section 9.5).
Note: When interpreting the information below regarding the flow path through the valve note
that (NC = Normally Closed), (NO = Normally Open) and (C = Common).
When Enabled the valves will turn On and Off under the
instruments control (even if you have manually turned Off or On a
valve).
When Disabled the valves will change only in response to a user’s
action.
Indicates if the Sample/Cal valve on the Calibration Valve
Manifold is Off or On. This will determine the port the instrument
draws its sample from.
Off = Flow from NO to C (drawing sample from the Sample Port).
On = Flow from NC to C (drawing sample from the Calibration
Port).
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