Question about Friedrich Kuhl Series SL28M30 230 Volt, 27,800 BTU Air Conditioner with Energy Star Certification,
The unit is making a rumbling noise. When I reach in and feel the blower wheel (turning it off first of course), the blower wheel feels very loose. Would like to take it apart so I can see what's going on, but need instructions on how to take it apart to get to the blower wheel?
Follow this steps and fix it. God bless you
Turn the electricity to the air conditioning unit off at the
service disconnect box. Follow the wires from the AC unit to the
disconnect box, usually located next to the unit. Open the disconnect
box and, depending on the type, either pull the buss-bar or flip the
Open the air handler\'s access panels with the correct size of nut driver, usually 5/16- or 1/4-inch. Save the screws.
Remove the control panel\'s cover, if equipped, with a nut
driver. Some models have a flat metal cover over the electronic
controls, and some control panels butt up to the unit\'s access cover.
Save the screws and access cover.
Follow the wires from the blower motor. Two wires will go to
a capacitor located on the blower\'s housing. The rest of the wires will
go to the control panel.
Cut the wires leading into the control panel with wire cutters. Leave the cut wires connected inside of the control panel.
Remove the retaining bolts with either a nut driver, usually
3/8-inch, or an adjustable wrench. The retaining bolts, found on the
mounting brackets that the blower\'s housing slides on, keep the blower\'s
housing locked into position. Save the bolts.
Slide the blower motor\'s housing out of the AC unit. The housing will slide straight out along the mounting brackets.
Disconnect the two wires going to the capacitor. They will pull straight off the capacitor\'s terminals.
Unscrew the squirrel cage\'s locking-screw with an adjustable
wrench. The squirrel cage, the bladed wheel, connects to the blower
motor\'s shaft inside of the housing. The locking screw holds the
squirrel cage to the shaft.
Unscrew the blower motor\'s mounting screws with either a nut
driver, usually 3/8-inch, or an adjustable wrench. These screws hold
the motor to the housing and are found on the opposite side of the
squirrel cage, the same side that the wires leave the motor.
Pull the motor from the housing. A drop of oil on the shaft
will aid in removal. If the squirrel cage sticks to the shaft, then hold
the shaft still with an adjustable wrench while spinning the squirrel
cage on the shaft.
Slide the new blower motor into the housing. The blower motor\'s shaft will slide into the squirrel cage\'s hole.
Tighten the blower motor\'s mounting screws.
Spin the blower motor\'s shaft until the flat part of the
shaft lines up with the squirrel cage\'s locking screw. Move the squirrel
cage in or out until it does not touch the housing or the blower motor.
Tighten the locking screw.
Connect the blower motor\'s capacitor wires, usually brown or
brown with white stripes, to the capacitor. Direct replacement motors
use the same color-coded wires as the original.
Slide the blower motor\'s housing into the AC unit along the mounting brackets. Install the mounting bracket\'s retaining bolts.
Connect the new blower motor\'s wires in the control panel
one at a time. Disconnect one old wire in the control panel. Determine
its color and connect the new wire, of the same color, to its place. Do
this for all wires.
Replace the control panel\'s cover, if equipped, and the
unit\'s access cover. Turn on the power to the unit at the disconnect box
and test the blower motor.
Posted on Jul 18, 2013
Testimonial: "Thank you Ernesto for this. I will have to look at it more, but I am a little unsure at this point because the blower wheel is driven by the same shaft that turns the exhaust fan at the external end of this unit, which is a through the wall room unit - large capacity 27,800 BTU. It seems I would not be able to remove the blower unit without removing the fan and it's motor as well, unless they are first somehow disconnected? I will see if I can post the exploded diagram of this unit, unless you already have that? Thanks and God Bless!"
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Posted on Jan 02, 2017
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