frame heater

frame heater

A device used to warm plastic spectacle frames in order to soften its material sufficiently to allow insertion of lenses and/or adjustment. Some frame heaters warm air, which is directed to the area of the frame that is to be altered. Others heat salt or glass beads to a given temperature and the part of the frame that is to be altered is placed into the heated material. Syn. frame warmer. See plastic spectacle frame.
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I'm sure I'm not alone in being defeated, after an age spent at the frame heater, by the impossible task of attempting to reduce the length to bend of a thick side.
Minimal gasket frost buildup is achieved with the Halo bypass coil frame heater. Other features include microprocessor controls, an automated C[O.sub.2] backup system, temperature zero and adjustable remote alarm delays.
That's why in many commercial freezer installations, the doors and frames are heated by internal frame heaters that operate 24/7 to prevent excessive condensation buildup.
An exterior mounted door frame sensor modulates the door and frame heaters as needed.