Guide (Airlock) Atmosphere to Vacuum

2019-05-21T19:34:32Z

82.145.223.90: /* Construction */

[[Category:Guides]][[Category:Atmospherics]]
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==Description==
An Atmosphere to Vacuum Airlock is a [[Room]] that can evacuate and refill its internal volume with the [[Atmosphere]] connected to it. It has two or more airtight [[Portal]]s which all do not open simultaneously. An Atmosphere to Vacuum Airlock allows passage between a vacuum and a pressurized environment without the loss of [[Pressure]].

An Atmosphere to Vacuum Airlock can be controlled automatically using a [[Circuitboard (Airlock)]] installed within a [[Console]] which will refer to the pressurized environment as "interior" and the vacuum environment as "exterior".

When activated with the interior-portal open, the system will automatically close the interior-portal and will activate all selected [[Active Vent]]s to try to evacuate the interior-atmosphere from the airlock chamber. Only after a total vacuum is achieved within all of the [[Large Grid Atmosphere|Large Grid Volume]]s in which selected [[Gas Sensor]]s reside will the exterior-portal automatically open.

When activated with the exterior-portal open, the system will automatically close the exterior-portal and will activate all selected [[Active Vent]]s to pressurize the chamber with interior-atmosphere. Only after the airlock's internal pressure equals or exceeds the 101 Pa will the interior-portal automatically open.

==Materials==
Material requirements for a minimum Atmosphere to Vacuum Airlock are:
* 2 x portals: variants of either [[Kit (Airlock)]], [[Kit (Blast Door)]], [[Kit (Door)]], or [[Kit (Docking Port)]]
* 1 x [[Kit (Consoles) Console|Kit (Consoles) Console]]
* 1 x [[Circuitboard (Airlock)]]
* 1 x [[Glass Sheets]]
* 1 x [[Data Disk]]
* 1 x [[Kit (Sensors) Gas Sensor]]
* 1 x [[Kit (Active Vent)]]
* 1 x [[Kit (Passive Vent)]] (optional)
* 1 x [[Kit (Flashing Light)]] (optional)
* 1 x [[Kit (Power Controller)]] (optional)
* 2 x [[Kit (Pipe)]]
* # x [[Cable Coil]]

==Construction==
A minimum Atmosphere to Vacuum Airlock can be constructed using the following instructions:

# Place both [[Portal]]s one [[Large Grid]] apart with the power and data ports facing into the airlock's interior.
# Using the [[Labeller]], rename each door as "Interior-Door" and "Exterior-Door" appropriately.
# Enclose the four remaining sides of the airlock chamber with airtight frames, walls, or windows.
# Place [[Console]], [[Active Vent]], [[Gas Sensor]], and optional [[Flashing Light]] and [[Power Controller]] somewhere within the airlock's interior.
# Ensure all placed devices are attached to the same [[Wire Network]] including the portals' power and data ports.
# Ensure the airlock's wire network is connected to an active [[Power Supply]] and all devices can receive power.
# Attach a [[Pipe Network]] to the Active Vent large enough to hold the volume of the airlock or pass it through to a [[Passive Vent]] placed in the "interior" environment.
# Ensure "interior" pipe network is not connected to any other pipe network.
# Insert Circuitboard (Airlock) into the console, then place the [[Glass Sheet]] onto the console.
# Insert Data Disk into the side slot of Console then power on the Console.
# Use the console's up and down arrows to scroll through the list of devices. Click to select. Click again to deselect if incorrect
# Find and click "Exterior-Door" followed by all caps and green "EXTERIOR". NOTE: SELECT THIS FIRST!
# Ensure the Exterior-Door's lock-indicator has turned from green to red.
# Find and click "Interior-Door" followed by all caps and green "INTERIOR". NOTE: MAKE SURE IT'S OPEN!
# Ensure the Interior-Door's lock-indicator has turned from green to red.
# Find and click "Active Vent" followed by all caps and green "VENT".
# Find and click "Gas Sensor" followed by all caps and green "SENSOR".
# Find and click "Flashing Light" followed by all caps and green "LIGHT". (optional)
# Remove Data Disk from the side slot of Console.

If there is an error the console screen will say so and the power light will flash yellow.

==Troubleshooting==
When powered, all associated doors and vents are locked, preventing their manual use even when power is subsequently denied. This can be a problem when trapped within an airlock during a power outage. Best practise is to ensure the airlock's wire network is connected to an emergency [[Power Supply]] such as a [[Battery Cell]] equipped [[Power Controller]].

A pressurization phase will stall if there is not enough gas available to all selected [[Active Vent]]s to reach 101 kPa. Such stalled pressurization phase can be skipped by clicking the yellow "Cancel Pressurize" button on a console.

An airlock depressurization phase will not complete until the [[Large Grid Atmosphere|Large Grid Volume]]s in which all selected [[Gas Sensor]]s reside are depleted of atmosphere at which time the exterior door will open. Such stalled depressurization can be skipped by clicking the yellow "Cancel Depressurize" button on a console. In larger airlocks, ensure there is one Gas Sensor per Large Grid to prevent the premature opening of the exterior portal and the resulting loss of atmosphere.

==See Also==
* [[Guide (Airlock)]]
* [[Guide (Airlock) Atmosphere to Atmosphere]]
* [[Guide (Airlock) Docking Ports]]

* [[Circuitboard (Advanced Airlock)]]
* [[Circuitboard (Airlock)]]
* [[Kit (Airlock)]]
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Guide (Airlock) Atmosphere to Vacuum