Startup and Operation
18
There is a generous margin of safety built into the de-icer system, and opera-
tion for prolonged periods below 60° F (16° C) will not harm the system. If
icing conditions are expected, the heaters should be turned on in advance as a
preventive measure. It is much easier to prevent ice formation than to remove
a heavy coating.
Shively Labs de-icer control
system
If you have the Shively Labs de-icer control box and dual-setting thermostat,
you have the choice of manual or automatic operation. There are three switch
settings: AUTOMATIC, OFF, and MANUAL.
• When the switch is set to AUTOMATIC, the thermostat turns the
heaters on and off according to the temperature.
• When the switch is set to OFF, the thermostat is overridden and the
heaters will stay off no matter what the temperature.
• When the switch is set to MANUAL, the thermostat is overridden
and the heaters will stay on no matter what the temperature.
