Functional description – Welch Allyn Klean Air II - User Manual User Manual
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990070 Rev. C
Control Panel
(1) Fan Run/Standby Switch activates/de-activates the fan
(2) Fan Speed Switch controls High/Low fan speed
(3) Filter Status Lights indicate filter’s status
Functional Description
When the unit is initially turned on, the unit will be in standby and the fan speed will be
automatically set to Low. The fan may be turned on by the fan switch or by the
footswitch; the fan switch and footswitch can be used interchangeably.
The fan speed may be toggled from Low to High or High to Low in standby or when
the fan is running. When the unit is turned to standby, the High/Low switch will remain
WARNING: Do not attempt to open the doors of the unit with power turned
on!
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