Hoistman was conducting pre op hoist checks when the hoist tripped on left brake wear switch. hoistman notifies supervisor and troc, who called safety. The decision was made to evacuate the mine on #1 hoist. The fans were taken down and #1 hoist was prepared to be used when we were notified that #2 hoist was ready to be reset, the hoistman reset the hoist, notified troc at 18:48