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CLEANING
THE FAN
1. Remove the upper shell, as described in this manual, and
lift off the top fan shroud.
2. Wash the mounted fan with a damp cloth then dry carefully
so as not to bend the blades. If fan is very dirty, loosen the
fan'setscrew and slip the fan off of the motor shaft. Wash the
fan in detergent and water, and then dry the fan carefully so
as not to bend the blades.
3. Slip the fan onto the motor shaft. Fan hub should be flush
with end of the motor shaft. Place the setscrew on flat of
shaft and torque setscrew 40-50 inch-pounds.
4. Install the upper shell as described in this manual.
Fan
Set Screw
ADJUSTMENTS
1. Remove
the
plug
from
the filter
end cover and thread
the accessory
pressure
gauge into the hole.
2. Start the heater and allow
it to burn.
3. The pressure
gauge should
read 3.0 PSI.
If not, turn
the
adjusting
screw
in (clockwise)
to increase
the pressure or
out
(counter
clockwise)
until
the gauge
reads 3.0
PSI.
4. Unplug
the heater.
5. Remove
the gauge and replace
the plug.
Filter
Pipe Plug m
End Cover
Hole
Accessory
Pressure Gauge---_
Clockwise
Counter
Clockwise
Adjusting
Screw
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