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- If outside tank pressure > 120 psi.
This can happen when performing a magnet fill which cause capturing boil-off helium with a faster rate. Therefore, checking the outside tank pressure before a magnet fill is necessary.
Avoid the outside tank pressure reaching 120 psi, by
i) Venting gHe from the outside tank when it is around 110 psi or below.
ii) Liquefaction
If it happens, then perform (i), then unplug/plug Kaeser Compressor (NOT HR3 power plug), or wait for a couple of hours to let the Kaeser Compressor to start automatically. - If PC1 < 0.1 psi
This 0.1 psi can be changed using the ProSense cube on the HR3. - If the buffer tank pressure (VSWR) doesn’t increase by 1 psi within a sample time of 10mins.
This is a setting on the LCD panel on HR3
Press F5, and then Press F1 to navigate to that screen, then use F3/F4 to increase/decrease the value. - If the compressor (Kaeser) did many starts in a short period of time (6 + / times per hour), then the compressor will stop running.
If this happens, then unplug/plug plug the HR3 power, then it will start automatically. - If there is an alarm on Kaeser compressor.
In this situation, Kaeser compressor’s screen needs to be checked.
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