End of the Match

[Sam2197]

a release valve was provide just for that purpose. it is dont manually

[Zultraranger]

Originally Posted by Sam2197

a release valve was provide just for that purpose. it is dont manually

please speak english.

[Mark McLeod]

The Refs can use the manual release valve too, if necessary.
Just mark it's location well, so it's obvious where it is.

The only related rules I found were:

Originally Posted by 7.3.5.2 - Robot Operations-Robot Actions

<G45>
Arena Reset - ROBOTS must be designed to permit the release and removal of any TRACKBALLS from the ROBOT without being powered up after a MATCH.

Originally Posted by 9.6.4 - Field Reset Rules

<T13>
Field power to the ROBOTS will not be re-enabled after a match. ROBOTS must be designed to permit removal of TRACKBALLS or other ROBOTS without requiring activation of the ROBOT power system. Teams should design mechanisms that allow easy release of TRACKBALLS. At the discretion of the head referee or field manager, ROBOTS may be powered up and controlled via tether to collapse the ROBOT to permit safe and/or rapid removal from the field and transport to the pits.