帮忙翻译,谢谢verify the release of air, turn the power off and con

帮忙翻译,谢谢verify the release of air, turn the power off and confirm safety before performing
A. Inspection and maintenance of machinery / equipment should only be performed once safety
of personnel and equipment is confirmed.
B. When equipment is to be removed. Stop supplied air, exhaust the residual pressure,
verify the release of air, turn the power off and confirm safety before performing
maintenance.
C. Before machinery / equipment is restarted, ensure safety before applying power