SAFE-HEET 707 Variable Temperature Controller
S707 SAFE-HEET Variable Temperature Controller
The Variable Temperature Controller can also be used for extended periods by setting the indicator in the blue or red range. These lower temperature settings help prevent the internal engine corrosion normally associated with leaving heaters on at full power. The Variable Temperature Controller allows the user to determine what setting best fits each unique situation. For example, if subzero weather is forecasted and a flight is anticipated in the next couple of days or a week the controller can be set at about 50-75% brightness of the indicator light. The reduced setting will maintain the engine temperatures just above freezing. This engine temperature will not promote internal engine corrosion but will allow quick pre-heat when the aircraft is needed. For completion of the pre-heat, the controller can be turned to full power for a short time just before starting the engine.
The Variable Temperature Controller cord is 25 ft long. Temperature range at the top of the blue arc is 125-150 degrees Fahrenheit.
Can also be used as an installation aid
As an installation aid for the SAFE-HEET Engine pre-heater, the temperature controller allows the pre-heater to quickly cure the installation adhesive, using its own heat energy at a reduced rate. The increased temperature also thins the adhesive, which aids in eliminating micro bubbles and provides better heat transfer. The SAFE-HEET pre-heaters can be installed in much colder temperatures using the model 707 Variable Temperature Controller.
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