Montana Instruments Cryostation s Series - Venting and Pulling Vacuum

System User Manual
52
Warming Up the System
A warmup operation is used to bring the system to room temperature to access the sample chamber.
The system may be warmed up actively with heaters at any time, including during a cooldown.
1. In the UI, navigate to the SAMPLE CHAMBER display screen and select the PLATFORM temperature
channel to bring up its operation controls.
2. Press the WARMUP command button. On the popup, press WARMUP again to confirm.
An active warmup is much faster than using the STOP command. The heaters will automatically shut off
when the entire system reaches 295 K, but the sample chamber will remain under vacuum.
Stopping a Cooldown or Warmup
At any time during a cooldown or warmup, the process can be stopped.
1. In the UI, navigate to the SAMPLE CHAMBER display screen and select the PLATFORM temperature
channel to bring up its operation controls.
2. Press the STOP command button. On the popup, press STOP again to confirm.
This action will stop running the compressor/cryocooler and turn off any heater power going to the
cryocooler stages and sample chamber platform. The system will begin to warm up naturally, but it will
remain under vacuum.
5.2.3 Venting and Pulling Vacuum
Vent to Access the Sample Chamber
After a cooldown and warmup cycle, the system remains under vacuum until the user is ready to access
the sample chamber. To access the chamber:
1. In the UI, navigate to the SAMPLE CHAMBER display screen and select the PLATFORM temperature
channel to bring up its operation controls.
2. Press the VENT command button. On the popup, confirm or adjust the custom parameters for
the vent procedure, then press VENT again to confirm.
The sample chamber will be vented to atmospheric conditions.
» NOTE
Choosing to “Vent Continuously” will cause nitrogen (when attached) to flow through the chamber,
even after the chamber is opened. This can help to keep the vacuum space as clean as possible
during quick sample exchanges. To stop the flow of nitrogen when “Vent Continuously” is used, press
the STOP command.
Keep the Sample Chamber Under Vacuum
When the system is not in use, it is recommended to keep the sample chamber under vacuum to
prevent moisture and contaminants from entering the sample space. To keep the system under vacuum: