3.3.7 Valves
General description
With the exception of the filter housing options that have either one or three manual air
outlet valves, all valves are diaphragm valves that are actuated by compressed air. The
valve actuators are controlled by an ASi bus.
The inlet and outlet valve configurations are identical. Each valve consists of a valve
body, a diaphragm and an actuator. Two valves are combined into a valve block.
Due to their size and weight, the valves for 1" systems are mounted in turnable cradles.
WARNING
To avoid injury when servicing the valves on 1" systems, make sure
that no body parts are caught when turning the valve assemblies.
Valve LED indicator lights
The valve LED indicator lights are illustrated below.
CLOSED
ERROR
OPEN
POWER
FAULT
Description (when applicable)ColorLabel
Steady light: Actuator in closed positionOrangeCLOSED
Steady light: Programming, sensor or internal errorRedERROR
Steady light: Actuator in open positionYellowOPEN
Voltage onGreenPOWER
Steady light: Slave address errorRedFAULT
Refer to the product documentation package for other possible indications
and more information about their meaning. Some indications are only relevant
for service personnel.
Note:
ÄKTAprocess Operating Instructions 29-0252-49 AA 61
3 System description
3.3 Standard components
3.3.7 Valves
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