Abstract: The modular timer for an air circulator comprises a timer for energizing an air circulator motor for a predetermined amount of time. A first connector connects the timer to an air circulator motor while a second connector connects the timer to a power switch. A selection switch controls the timer setting of the timer such that the time period corresponds to at least one time period of a work shift. A housing limits access to the selection switch and protects it.

Abstract: The modular timer for an air circulator comprises a timer for energizing an air circulator motor for a predetermined amount of time. A first connector connects the timer to an air circulator motor while a second connector connects the timer to a power switch. A selection switch controls the timer setting of the timer such that the time period corresponds to at least one time period of a work shift. A housing limits access to the selection switch and protects it.

Abstract: A quick release mount for mounting a fan to a static structure includes a handle for moving a movable member between a locking position and a non-locking position. The handle being operable to move the moving member into and out of an opening in the fan such that the fan can be removed from the quick release mount by moving the handle and moving member to the non-locking position. Some embodiments do not require any tools for removal of the fan and allows the mount to be locked at a predetermined angle relative to the static structure. The other embodiment only requires simple tools. Thus, once the fan is reattached, it need not be readjusted to return to its desired angled position.

Abstract: A fan cleaning system includes a fan having a motor mounted to a support structure. A fan blade is mounted to a shaft of the motor and enclosed by a fan guard. In one aspect of the invention, the fan guard comprises a front guard and a rear guard having an upper rear guard and a lower rear guard. The upper rear guard and lower rear guard are mounted to the motor on opposite sides of the motor and shaft thereby permitting removal of the upper and lower rear guards from the motor without removing the fan blade. In a second aspect of the invention, fan cleaning system includes a cleaning shroud which completely encloses the fan guard, blade and part of the motor. The cleaning shroud preferably comprises an upper shroud and a lower shroud and an upper shroud bracket and a lower shroud bracket sealingly mounted against the motor.