If the molecular sieve program is paused for some reason, can the various programmable valves be switched to manual mode for operation?
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This post was last edited by you*n*nyou on 2012-3-24 at 12:33. After the molecular sieve program is paused for some reason, can each programmable valve be switched to manual mode for operation?
Sure, some small air separation users use fully manual methods
This requires the person in charge of your instruments to check it at the engineer station; the procedure settings vary from factory to factory. It’s a matter of authorization, and it’s also intended to ensure that production isn’t affected by accidental operations after a pause is initiated. Some factories do not grant such access for safety reasons, while others do allow it. Consult your engineers who specialize in instruments, and have them provide a logical explanation of the relevant purification system so that everyone can understand it and be able to handle any situations that may arise. Valves in the purification system of poor quality are also prone to problems.
There are two reasons for pausing the molecular sieve: 1. It needs to be paused manually； 2. Due to unmet conditions, it pauses automatically, that is, it switches from automatic operation to manual mode. If the conditions are not met, an alarm prompt is usually designed ； First scenario: When manual suspension is required, the operator should know what the automatic system does. The key personnel in the unit are usually on duty; under normal circumstances, you can manually operate the relevant valves as needed, as they will not move on their own ； Second scenario: The operator should proactively investigate the cause (or confirm it together with the instrumentation and electrical control personnel), and then decide on the appropriate action to take