Allertor113 wrote:Wow I always thought the Canadian model 2 was just the ARS name for it, I didn't realize Federal actually called it that. "You can either buy the Model 2 orrrrrrrr the Canadian version!"
At one time Federal Signal made two different versions of the Model 2. Their was a regular or standard version of this siren, and the extreme cold weather "Canadian" model. To save on production costs, Federal Signal, in the 1970s eliminated the standard edition; thus, making the Canadian version the status quo.
in this photograph, you can see both production units side-by-side. On the left is the standard Model 2, and on the right is the Canadian version. As you can see the housing is clearly different on both models.
The Canadian Model 2 design, made it less likely to freeze up in the winter months. This siren also used anti-icing technology, which prevented the ice from forming on the moving parts. When the temperature fell below a certain point, the rotor would turn slowly, and a heater would come on to keep key components warm. This same technique can be found on many older Federal Signal sirens in northern climates.