
2 | The NGC Instrument
44 | NGC Chromatography Systems and ChromLab Software
Ports on the Buffer Blending Valve
Buffer Blending Valve LEDs
The buffer blending valve module is fitted with LEDs.
A single green LED indicates the active inlet port is open.
Multiple green LEDs indicate the buffer blending valve is cycling between
the inlet ports.
A green LED indicates the active outlet port.
Blinking green LEDs indicate the line to plumb using the Point-to-Plumb
feature.
Port Function
Q1–Q4 Buffer inlet ports
Outlet A Outlet to system pump A or to buffer inlet valve A
Outlet B Outlet to system pump B or to buffer inlet valve B
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