Special Electric Elevator/Escalator Hot Air Fans are equipped with
single-phase centrifugal fans that drive the wind through the electric unit
heaters to warm the indoor atmosphere. The technically advanced PTC
semi-conductor heat-variable ceramic heaters are combined to the heat
radiators. And the PTC heaters are safe, energy-saving and highly-efficient
with the following features: high heating-up rates, energy-efficient design,
long service span, high heat transformation rate, ensured safety and
reliability ,no flame, a wide range of working voltages.
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