It must be possible to start machinery only by voluntary actuation of a control provided for the purpose. The same requirement applies: - when restarting the machinery after a stoppage, whatever the cause, - when effecting a significant change in the operating conditions (e.g. speed, pressure, etc.), unless such restarting or change in operating conditions is without risk to exposed persons.
All protection devices which are used to prevent damage to the power source in the case of an overload or stalling shall be capable of resetting automatically while the switch controlling the window/roof panel/partition is activated.
